2027 Expert Rankings
Best Boiler Brands for 2027
Installer Rankings & Reviews
Steam or hot water? Cast iron or condensing? Here's what holds up in older Northeast homes in 2027, and why, from the installers who replace and service them.
Quick answer: The best boiler brands for 2027 are Weil-McLain and Burnham for cast-iron steam and hot-water systems, and Viessmann, Bosch, Navien and Lochinvar for high-efficiency condensing and combi models. The right pick depends on your system type, fuel, and whether a local installer stocks parts for it.
Last updated: September 27, 2026
Standard
⭐ Weil-McLain — #1
Condensing24+
Brands
98%
Max AFUE
10
Steam
4.3
Avg Rating
Fully Insured
5-Star Rated
Steam & Hot Water
Long Island, NY
Comparing boilers for a Long Island home?
- Exact brand and model fit confirmed before proposal
- Warranty and current incentive terms reviewed in writing
- 5.0 Google rating · 93 reviews
Compare the installation process first? Read our boilers installation guide →
Quick Verdict
Our Top Picks at a Glance
Skip the research—here are the best boiler brands for every need in 2027.
Best Overall
Weil-McLain
Steam & Cast Iron Reliability
Best for Steam
Burnham
Residential Hot Water Systems
Best Combi Boiler
Navien
Combi Boilers & Compact Spaces
Best Condensing
Viessmann
Maximum Efficiency & German Engineering
Best Value
C
Crown Boiler
Budget-Friendly Cast Iron
Installer Favorite
Bosch
Reliable condensing boiler options across residential applications
Premium Tier
Premium Boiler Brands
Industry-leading cast iron and stainless steel boilers with exceptional build quality and comprehensive warranty coverage for Nassau County homes.
Premium Boiler Champion
Weil-McLain
Industry-leading reliability and efficiency for demanding heating needs
AFUE
95%
Types
3
Rating
4.9/5
Warranty
Lifetime (cast iron)
- Industry leader in cast iron steam boilers since 1881
- Lifetime heat exchanger warranty on all cast iron models
- Same-day parts from F.W. Webb in Hicksville and Farmingdale
⚡Most Efficient
🛡️Best Support
⭐Top Rated
Shop by System Type
Find the Best Boiler for Your Home
Not sure which type you need? Browse our expert recommendations by boiler category.
Full Rankings
Top 24 Boiler Brands for 2027
Detailed reviews of each brand with pros, cons, pricing, and who each one suits best.
Rankings reflect our installers' judgment from servicing and replacing these brands, not paid placements or affiliate commissions. See full methodology →
#1
🥇 Best Overall
84-95% AFUE$4,500-$12,000Lifetime (cast iron) Warranty15 Models
Types:Steam, Hot water, Condensing
- Industry leader in cast iron steam boilers since 1881
- Lifetime heat exchanger warranty on all cast iron models
- Higher upfront cost than Korean and Chinese competitors
- Cast iron units may require crane for tight basement access
#2
🥈 Runner-Up
82-95% AFUE$4,000-$11,000Lifetime (cast iron) / 20 years (stainless) Warranty10 Models
Types:Steam, Hot water, Condensing
- America's oldest boiler manufacturer - trusted since 1873
- Same-day parts availability at F.W. Webb and local supply houses
- Electronics in Alpine series sensitive to Long Island power surges
- Condensing models require condensate neutralizer installation
#3
🥉 Third Place
95-98% AFUE$6,500-$15,00012 years Warranty11 Models
Types:Hot water, Combi, Condensing
- Industry-leading 98% AFUE efficiency
- German engineering precision
- Premium pricing tier
- Specialized technician requirements
#4
95-96% AFUE$3,800-$9,00010 years, model-specific limited coverage Warranty4 Models
Types:Hot water, Combi, Condensing
- Broad residential condensing lineup
- Up to 96% AFUE in the researched SSB series
- Warranty terms vary by model and application
- Five-year parts coverage is shorter than some competing offers
#5
95-95% AFUE$3,500-$8,00010 years combi; heating-only varies by series Warranty7 Models
Types:Hot water, Combi, Condensing
- Two current combi families
- 95% AFUE researched residential families
- No steam boiler in researched lineup
- Combi must meet heating and hot-water loads
#7
95-96% AFUE$5,500-$13,00015 years Warranty6 Models
Types:Hot water, Condensing
- Commercial-grade engineering
- 96% AFUE efficiency
- Premium commercial-tier pricing
- Larger footprint than residential units
#8
C
82-87% AFUE$2,500-$6,00020 years Warranty21 Models
Types:Steam, Hot water
- 70+ years American manufacturing
- Steam boiler expertise
- Cast iron heavier than wall-mount options
- Not the highest efficiency tier
#9
P
82-87% AFUE$2,800-$6,500Limited lifetime Warranty7 Models
Types:Steam, Hot water
- 100+ years manufacturing heritage
- Excellent cast iron durability
- Cast iron heavier than modern alternatives
- Fewer high-efficiency options
#10
84-95% AFUE$3,200-$8,00015 years (condensing) / Lifetime (cast iron) Warranty18 Models
Types:Hot water, Condensing
- Long Island-based manufacturer
- Steam and hot water expertise
- Regional distribution focus
- Fewer premium options
#11
95-96% AFUE$5,500-$12,000Lifetime (cast iron) / 10 years (stainless) Warranty4 Models
Types:Hot water, Condensing
- Bosch Group engineering
- German manufacturing quality
- Premium pricing tier
- Aluminum heat exchanger limitations
#12
NY
82-95% AFUE$3,000-$8,500Lifetime (cast iron) / 15 years (stainless) Warranty10 Models
Types:Steam, Hot water, Condensing
- Northeast manufacturing expertise
- 70+ years regional experience
- Regional distribution limits
- Less national brand recognition
#13
82-87% AFUE$2,800-$6,000Lifetime (cast iron) Warranty6 Models
Types:Steam, Hot water
- 90+ years American manufacturing
- ECR International backing
- Cast iron weight considerations
- Traditional technology focus
#14
D
82-87% AFUE$2,400-$5,00020 years Warranty8 Models
Types:Steam, Hot water
- Budget choice for rentals
- ECR parts network
- Economy build quality
- Basic controls
#15
HTP
95-96% AFUE$3,500-$9,00012 years Warranty3 Models
Types:Hot water, Combi, Condensing
- 316L stainless steel construction
- 96% AFUE efficiency
- Less brand recognition
- Specialized service requirements
#16
95-97% AFUE$5,000-$11,000Limited lifetime (stainless) Warranty6 Models
Types:Hot water, Combi, Condensing
- Canadian engineering innovation
- 96% AFUE efficiency
- Smaller US distribution
- Less brand recognition
#17
95-96% AFUE$4,500-$10,00015 years (stainless) Warranty3 Models
Types:Hot water, Combi, Condensing
- Triple-pass stainless for salt air
- Parts at F.W. Webb and Sid Harveys
- Premium for waterfront value
- Fewer IBC-certified installers
#18
95-96% AFUE$3,200-$7,50012 years Warranty3 Models
Types:Hot water, Combi, Condensing
- Same-day parts locally
- i-Series combi for Cape Cods
- Annual descaling essential
- Surge protector recommended
#19
95-96% AFUE$3,500-$9,00010 years Warranty3 Models
Types:Hot water, Condensing
- Mascot FT for multi-zone colonials
- Pool heating expertise
- Less recognition for home heating
- No steam options
#20
87-95% AFUE$5,500-$12,000Lifetime (thermal purge) Warranty5 Models
Types:Hot water
- NJ factory 60 miles away
- Thermal purge avoids scaling
- Premium upfront cost
- Requires trained installer
#21
82-95% AFUE$3,000-$9,000Lifetime (cast iron) / 15 years (stainless) Warranty6 Models
Types:Steam, Hot water, Condensing
- Burnham quality at lower price
- K2 Steam for pre-war homes
- Brand may confuse buyers
- Contractor-focused marketing
#22
94-96% AFUE$3,000-$7,00012 years Warranty3 Models
Types:Hot water, Combi, Condensing
- Wall-mounted saves space
- Japanese quality at less than Rinnai
- Smaller brand recognition
- Annual descaling essential
#23
93-95% AFUE$2,800-$6,50012 years Warranty3 Models
Types:Hot water, Combi, Condensing
- Less than Navien/Rinnai pricing
- Compact wall-mount
- Fewer experienced installers
- Parts 2-3 day delivery
#24
SC
82-86% AFUE$2,600-$6,00025 years Warranty3 Models
Types:Steam, Hot water
- Heavy-duty for 40+ years
- Mills Steam for pre-war homes
- 82-86% AFUE no rebates
- Heavy may need reinforcement
#25
ECR
82-95% AFUE$2,500-$8,00020 years Warranty3 Models
Types:Steam, Hot water, Condensing
- One parts network covers all
- Evolution 95% AFUE rebate eligible
- Brand hierarchy confusing
- Quality varies by sub-brand
Steam & Older Homes
Best Boiler Brands for Steam Systems
Pre-war homes across the Northeast still run on steam radiators. These brands handle the thermal cycling and near-boiler piping demands that shorten the life of lesser boilers.
Old Home Specialists
Best Boiler Brands for Older Homes
Nassau County's older housing stock — from 1920s colonials to 1960s split-levels — needs boilers that can handle radiators, steam systems, and decades-old piping. These brands specialize in exactly that.
Weil-McLain
Best Overall
The gold standard for cast-iron steam and hot water boilers. Weil-McLain's CGa and ECO series are specifically engineered for the thermal cycling demands of radiator systems found in Nassau County's 1940s–1960s housing stock.
Best for: Pre-war steam radiator homes
Burnham
Best for Steam
Burnham's Series 2 and IN series cast-iron boilers have been the go-to replacement for aging steam systems in Levittown, Hicksville, and East Meadow for decades. Local distributors stock parts extensively.
Best for: Post-war Cape Cods & ranches
Peerless
Most Durable
Peerless boilers are built like tanks — their cast-iron sections are among the thickest in the industry. Ideal for homes with oversized radiators and single-pipe steam that punish lesser equipment.
Best for: Large colonial homes with radiators
Navien
Best Upgrade
For older homes converting from cast-iron to high-efficiency, Navien's NCB series combi boilers provide both heat and hot water in a wall-mounted unit — perfect when upgrading from baseboard to a modern hydronic system.
Best for: Homes upgrading from baseboard heat
Important Considerations for Older Homes
- Steam systems require boilers specifically rated for steam — not all brands offer them
- Older homes often have oversized radiators that need higher BTU output
- Cast-iron boilers handle thermal cycling better than steel in steam applications
- Single-pipe steam systems need boilers with generous water volume
- Local parts availability matters — choose brands stocked by F.W. Webb and Sid Harvey's
Side-by-Side
Compare Boiler Brands: Side-by-Side
Sort and compare boiler brands by the metrics that matter most to you.
| Brand | Boiler Types | ||||||
|---|---|---|---|---|---|---|---|
|
|
4.9
|
95% | $4,500 - $12,000 | Lifetime (cast iron) |
|
||
|
|
4.85
|
95% | $4,000 - $11,000 | Lifetime (cast iron) / 20 years (stainless) |
|
||
|
|
4.8
|
98% | $6,500 - $15,000 | 12 years |
|
||
|
4
|
|
4.65
|
96% | $3,800 - $9,000 | 10 years, model-specific limited coverage |
|
|
|
5
|
|
4.75
|
95% | $3,500 - $8,000 | 10 years combi; heating-only varies by series |
|
|
|
7
|
|
4.6
|
96% | $5,500 - $13,000 | 15 years |
|
|
|
8
|
C
Crown Boiler
|
4.55
|
87% | $2,500 - $6,000 | 20 years |
|
|
|
9
|
P
Peerless
|
4.5
|
87% | $2,800 - $6,500 | Limited lifetime |
|
|
|
10
|
|
4.45
|
95% | $3,200 - $8,000 | 15 years (condensing) / Lifetime (cast iron) |
|
|
|
11
|
|
4.4
|
96% | $5,500 - $12,000 | Lifetime (cast iron) / 10 years (stainless) |
|
|
|
12
|
NY
New Yorker Boiler
|
4.35
|
95% | $3,000 - $8,500 | Lifetime (cast iron) / 15 years (stainless) |
|
|
|
13
|
|
4.3
|
87% | $2,800 - $6,000 | Lifetime (cast iron) |
|
|
|
14
|
D
Dunkirk
|
4.25
|
87% | $2,400 - $5,000 | 20 years |
|
|
|
15
|
HTP
HTP
|
4.2
|
96% | $3,500 - $9,000 | 12 years |
|
|
|
16
|
|
4.15
|
97% | $5,000 - $11,000 | Limited lifetime (stainless) |
|
|
|
17
|
|
4.1
|
96% | $4,500 - $10,000 | 15 years (stainless) |
|
|
|
18
|
|
4.05
|
96% | $3,200 - $7,500 | 12 years |
|
|
|
19
|
|
4
|
96% | $3,500 - $9,000 | 10 years |
|
|
|
20
|
|
3.95
|
95% | $5,500 - $12,000 | Lifetime (thermal purge) |
|
|
|
21
|
|
3.9
|
95% | $3,000 - $9,000 | Lifetime (cast iron) / 15 years (stainless) |
|
|
|
22
|
|
3.85
|
96% | $3,000 - $7,000 | 12 years |
|
|
|
23
|
|
3.8
|
95% | $2,800 - $6,500 | 12 years |
|
|
|
24
|
SC
Smith Cast Iron Boilers
|
3.75
|
86% | $2,600 - $6,000 | 25 years |
|
|
|
25
|
ECR
ECR International
|
3.7
|
95% | $2,500 - $8,000 | 20 years |
|
4.9
Max AFUE:95%
From:$4,500
Heat Exchanger:Lifetime (cast iron)
4.85
Max AFUE:95%
From:$4,000
Heat Exchanger:Lifetime (cast iron) / 20 years (stainless)
4.8
Max AFUE:98%
From:$6,500
Heat Exchanger:12 years
4
4.65
Max AFUE:96%
From:$3,800
Heat Exchanger:10 years, model-specific limited coverage
5
4.75
Max AFUE:95%
From:$3,500
Heat Exchanger:10 years combi; heating-only varies by series
7
4.6
Max AFUE:96%
From:$5,500
Heat Exchanger:15 years
8
C
Crown Boiler
4.55
Max AFUE:87%
From:$2,500
Heat Exchanger:20 years
9
P
Peerless
4.5
Max AFUE:87%
From:$2,800
Heat Exchanger:Limited lifetime
10
4.45
Max AFUE:95%
From:$3,200
Heat Exchanger:15 years (condensing) / Lifetime (cast iron)
11
4.4
Max AFUE:96%
From:$5,500
Heat Exchanger:Lifetime (cast iron) / 10 years (stainless)
Prices reflect estimated installed cost for Nassau County, NY. Actual costs vary by home size and system complexity.
Every boiler lineup we track, by type
174 model families from 25 brands with efficiency, size range, heat-exchanger warranty and a link to the manufacturer's own data. Entries marked "Being verified" come from distributor listings we are still confirming. Installed prices depend on your home, so every install is quoted. Last verified Sep 27, 2026.
| Brand | Model | Type | Fuel | AFUE | BTU input | Heat exchanger warranty | Source |
|---|---|---|---|---|---|---|---|
| Bosch | SSB (Buderus SSB85/120/160) | Condensing | natural gas/propane | 96% | 17k–160k | 10-year limited (heat exchanger, leak) | Spec sheet |
| Bosch | Greenstar (wall heating-only) | Condensing | natural gas/propane | 95% | 13k–152k | 10-year limited lifetime | Spec sheet |
| Bosch | Greenstar Combi (wall) | Combi | natural gas/propane | 95% | 25k–152k | 10-year limited lifetime | Spec sheet |
| Bosch | Greenstar FS Combi (floor) | Combi | natural gas/propane | 95% | 25k–152k | 10-year limited lifetime | Spec sheet |
| Buderus | GB142 | Condensing | — | 95% | 50k–199k | Lifetime | — |
| Buderus | G234X | Condensing | — | 95% | 100k–285k | Lifetime | — |
| Buderus |
G115WS
Being verified
|
Oil hot water | oil | 87% | 74k–161k | lifetime | Spec sheet |
| Buderus |
G215
Being verified
|
Hot water | oil/gas | 86% | 134k–294k | 1-yr full parts; heat exchanger (cast iron) 2nd–10th year prorated leak warranty per residential cast-iron/oil boiler warranty (covers GA124/GC144/G234X/G334X/G115WS/G215/G315) | Spec sheet |
| Burnham | Alpine ALP150 | Condensing | — | 95% | 80k–150k | 20 years | — |
| Burnham |
Alpine
Being verified
|
Condensing | natural gas/propane | 95% | — | lifetime limited | Spec sheet |
| Burnham |
V8H
Being verified
|
Oil hot water | oil | 87% | — | lifetime limited (water); 10-year (steam) | Spec sheet |
| Burnham |
MPO-IQ
Being verified
|
Oil hot water | oil | 87% | — | lifetime limited | Spec sheet |
| Burnham |
EMP
Being verified
|
Oil hot water | oil | 87% | — | lifetime limited | Spec sheet |
| Burnham | MegaSteam | Oil steam | oil | 86% | 92k–201k | 10-year | Spec sheet |
| Burnham | ES2 | Hot water | natural gas/propane | 85% | 70k–280k | lifetime limited | Spec sheet |
| Burnham | Series 2 | Hot water | natural gas/propane | 84% | 38k–276k | lifetime limited | Spec sheet |
| Burnham | Independence IN7 | Steam | — | 82% | 70k–175k | Lifetime | — |
| Burnham |
Independence
Being verified
|
Steam | natural gas/propane | 82% | 62k–382k | — | Spec sheet |
| Crown Boiler |
Bimini BWC
Being verified
|
Condensing | natural gas/propane | 95% | 30k–300k | 15-year limited | Spec sheet |
| Crown Boiler | Phantom II | Condensing | natural gas/propane | 95% | 8k–180k | 12-year limited | Spec sheet |
| Crown Boiler | Phantom II Combi | Combi | natural gas/propane | 95% | 14k–200k | 12-year limited | Spec sheet |
| Crown Boiler | Velocity Phantom Combi | Condensing | natural gas/propane | 95% | 16k–199k | 12-year limited | Spec sheet |
| Crown Boiler | Velocity Phantom-X | Condensing | natural gas/propane | 95% | 8k–210k | 12 years | Spec sheet |
| Crown Boiler | Bermuda BWC | Hot water | — | 87% | 42k–252k | 20 years | — |
| Crown Boiler | Tobago (TWZ) | Oil hot water | oil | 86.1% | 70k–210k | 12-yr limited | Spec sheet |
| Crown Boiler | Freeport 2 | Oil hot water | oil | 86% | 91k–158k | 12 years | Spec sheet |
| Crown Boiler | Tobago | Oil hot water | oil | 86% | 91k–158k | 12 years | Spec sheet |
| Crown Boiler | Kingston (KSZ) | Oil steam | oil | 85.4% | 59k–176k | 12-yr limited | Manufacturer |
| Crown Boiler | Mega-Flex | Hot water | — | 85% | 42k–175k | 20 years | — |
| Crown Boiler | Freeport CT | Oil hot water | oil | 85% | 105k–196k | limited lifetime | Spec sheet |
| Crown Boiler | Aruba 5 | Hot water | natural gas/propane | 84% | 70k–295k | 12 years | Spec sheet |
| Crown Boiler | Bali | Hot water | natural gas | 84% | 61k–229k | 12 years | Spec sheet |
| Crown Boiler | Cabo 2 | Hot water | natural gas/propane | 84% | 83k–245k | 12 years | Spec sheet |
| Crown Boiler |
Cayman
Being verified
|
Hot water | natural gas | 83.5% | 103k–379k | limited lifetime; verify current Cayman terms | Spec sheet |
| Crown Boiler | Freeport 2 (FSZ) | Steam | natural gas/propane | 83.3% | 80k–160k | 12-yr limited | Spec sheet |
| Crown Boiler | Aruba | Hot water | natural gas/propane | 83.3% | 38k–280k | limited lifetime | Spec sheet |
| Crown Boiler | Bermuda (BSI) | Steam | natural gas/propane | 82.5% | 69k–380k | 12-yr limited | Spec sheet |
| Crown Boiler | Aruba | Steam | — | 82% | 70k–196k | 20 years | — |
| Crown Boiler | Bermuda | Steam | natural gas | 82% | 103k–276k | 12 years | Spec sheet |
| Dunkirk | Royal HE | Condensing | natural gas/propane | 95.2% | 80k–200k | 10 years | Spec sheet |
| Dunkirk | Royal CO (combi) | Combi | natural gas/propane | 95.2% | 80k–200k | 10 years | Spec sheet |
| Dunkirk | Q95M | Condensing | natural gas/propane | 95% | 80k–200k | 15-yr limited | Spec sheet |
| Dunkirk | XEB Series 4 | Hot water | natural gas | 84.4% | 43k–188k | 20-yr non-prorated | Spec sheet |
| Dunkirk | WPSB Series 4 | Steam | natural gas | 84.1% | 75k–299k | 20-yr non-prorated | Spec sheet |
| Dunkirk | DXL-K | Hot water | natural gas | 84% | 59k–235k | 20-yr non-prorated | Spec sheet |
| Dunkirk | PSB | Steam | natural gas | 82.7% | 75k–299k | 12-yr limited | Spec sheet |
| ECR International | EV90+ Evolution | Condensing | — | 95% | 60k–199k | 20 years | — |
| ECR International | Benchmark | Condensing | — | 92% | 75k–250k | 20 years | — |
| ECR International | PSB Steam | Steam | — | 82% | 56k–245k | 20 years | — |
| Energy Kinetics | System 2000 | Hot water | — | 95% | 80k–225k | Lifetime | — |
| Energy Kinetics | Accel CS | Hot water | — | 95% | 100k–300k | Lifetime | — |
| Energy Kinetics |
Ascent EK1T combi
Being verified
|
Combi | gas/propane/oil | 91% | 80k–175k | lifetime limited on pressure vessel (full first 10 years, prorated after) | Manufacturer |
| Energy Kinetics | System 2000 Frontier EK1/EK2 | Oil hot water | oil/gas/propane/bioheat | 88.6% | 83k–206k | lifetime limited | Spec sheet |
| Energy Kinetics | Resolute | Hot water | — | 87% | 70k–175k | Lifetime | — |
| HTP | UFT-100W | Condensing | — | 96% | 60k–199k | 12 years | — |
| HTP | Crossover | Combi | — | 95% | 60k–150k | 12 years | — |
| HTP | Endurance | Condensing | — | 95% | 80k–399k | 12 years | — |
| IBC Technologies | VFC 15-175 | Condensing | — | 96% | 15k–175k | 15 years | — |
| IBC Technologies | DC Series | Condensing | — | 95% | 40k–199k | 15 years | — |
| IBC Technologies | SL Series | Condensing | — | 95% | 30k–125k | 15 years | — |
| Laars | NeoTherm | Condensing | — | 96% | 80k–500k | 10 years | — |
| Laars | Mascot FT | Condensing | — | 95% | 80k–250k | 10 years | — |
| Laars | Pennant | Hot water | — | 88% | 75k–300k | 10 years | — |
| Lochinvar | Knight XL | Condensing | natural gas/propane | 96.2% | 80k–800k | 12-year limited heat exchanger | Spec sheet |
| Lochinvar | Knight WHN | Condensing | — | 96% | 55k–399k | 15 years | — |
| Lochinvar | Noble NKC | Condensing | — | 95% | 55k–285k | 15 years | — |
| Lochinvar | Crest | Condensing | — | 95% | 55k–199k | 10 years | — |
| Lochinvar | Knight Fire Tube | Condensing | natural gas/propane | 95% | 11k–285k | 12-year limited heat exchanger | Spec sheet |
| Lochinvar | Noble Combi | Combi | natural gas/propane | 95% | 16k–199k | 12-year limited heat exchanger | Spec sheet |
| Navien | NFB-C | Condensing | natural gas/propane | 97.5% | — | 12 years full then prorated residential; 10 years commercial | Spec sheet |
| Navien | NCB-E | Combi | — | 95% | — | 10 years (single-family residential) | Manufacturer |
| Navien | NFB-H | Condensing | natural gas/propane | 95% | 13k–200k | 12 years full then prorated (residential) | Spec sheet |
| Navien | NHB | Condensing | — | 95% | — | Before July 2018: 15 years; later prorated (residential) | Manufacturer |
| Navien | NCB-H | Combi | natural gas/propane | 95% | 11k–150k | 10 years (single-family residential) | Spec sheet |
| Navien | NFC-H | Combi | natural gas/propane | 95% | 13k–200k | 10 years (single-family residential) | Spec sheet |
| Navien | NHB-H | Condensing | natural gas/propane | 95% | 8k–150k | Prorated schedule; see Navien warranty (residential) | Spec sheet |
| New Yorker Boiler | GHE-II Combi | Combi | natural gas/propane | 95% | 14k–150k | 12-year limited | Spec sheet |
| New Yorker Boiler | GHE-II heating | Condensing | natural gas/propane | 95% | 8k–180k | 12-year limited | Spec sheet |
| New Yorker Boiler | CL Water | Oil hot water | oil | 87% | 92k–231k | lifetime limited | Spec sheet |
| New Yorker Boiler | CI-HGS 3-Pass Water | Oil hot water | oil | 87% | 84k–182k | lifetime limited | Spec sheet |
| New Yorker Boiler | FR / FR-HGS | Oil hot water | oil | 86.7% | 112k–231k | lifetime limited | Spec sheet |
| New Yorker Boiler | CL Steam | Oil steam | oil | 86.4% | 91k–230k | 10-year limited | Spec sheet |
| New Yorker Boiler | AP-U | Oil hot water | oil | 86.2% | 110k–154k | lifetime limited | Spec sheet |
| New Yorker Boiler | PVCG-C Water | Hot water | natural gas/propane | 85% | 63k–245k | lifetime limited | Spec sheet |
| New Yorker Boiler | CG-F Water | Hot water | natural gas/propane | 84% | 38k–280k | lifetime limited (prorated per general warranty schedule) | Spec sheet |
| New Yorker Boiler | CGS-C Steam | Steam | natural gas/propane | 82.2% | 69k–241k | 10-year limited | Spec sheet |
| Noritz | NRCB Combi | Combi | — | 96% | 60k–150k | 12 years | — |
| Noritz | CB Combi | Combi | — | 95% | 60k–120k | 12 years | — |
| Noritz | NCB-H | Condensing | — | 95% | 60k–199k | 12 years | — |
| NTI Boilers | Trinity TFT60-399 | Condensing | natural gas/propane | 95% | 15k–399k | 12 years | Manufacturer |
| NTI Boilers | TRX085-199 | Condensing | natural gas/propane | 95% | 20k–199k | 12 years | Manufacturer |
| NTI Boilers | FTVN085-199 | Condensing | natural gas/propane | 95% | 20k–199k | 12 years | Manufacturer |
| NTI Boilers | Trinity Lx150-800 | Condensing | natural gas/propane | 95% | 30k–800k | 12 years | Manufacturer |
| Peerless | Purefire PF-399-850 | Condensing | natural gas/propane | Not verified | 80k–1500k | — | Spec sheet |
| Peerless | Series PBC Combi | Combi | natural gas/propane | 95.3% | 16k–120k | 12-year limited heat exchanger | Spec sheet |
| Peerless | Purefire PF-50-210 | Condensing | natural gas/propane | 95% | 16k–210k | 12-year limited residential heat exchanger | Spec sheet |
| Peerless | Series WBV/WV | Oil steam | oil | Not verified | 84k–273k | Ten-year limited steam or lifetime limited hot-water cast-iron sections (residential) | Spec sheet |
| Peerless | Series EC/ECT | Steam | oil | Not verified | 105k–420k | Ten-year limited steam or lifetime limited hot-water cast-iron sections (residential; confirm model certificate) | Spec sheet |
| Peerless | Series 63 | Steam | natural gas | 83% | 89k–288k | Ten-year limited residential steam cast-iron sections | Spec sheet |
| Peerless | Series 64 | Steam | natural gas | Not verified | 345k–633k | — | Spec sheet |
| Rinnai | i-Series Combi | Combi | — | 96% | 60k–120k | 12 years | — |
| Rinnai | E-Series | Condensing | — | 95% | 60k–199k | 12 years | — |
| Rinnai | M-Series | Condensing | — | 95% | 60k–175k | 12 years | — |
| Slant/Fin |
Monitron
Being verified
|
Electric | electric | Not verified | 27k–137k | — | Spec sheet |
| Slant/Fin | CHS-85-399 | Condensing | natural gas/propane | 95% | 17k–399k | 15-year residential limited (includes 5-year Protection Plan) | Spec sheet |
| Slant/Fin | Bobcat B-120A/200A | Condensing | natural gas/propane | 93% | 30k–200k | 12-year residential (5-yr full + 7-yr prorated) | Spec sheet |
| Slant/Fin | VSL-160C | Combi | natural gas/propane | 92% | 30k–160k | 15-year residential limited (VSL warranty) | Spec sheet |
| Slant/Fin |
VSL II
Being verified
|
Condensing | natural gas/propane | 92% | 90k–250k | 15-year residential limited (VSL warranty) | Spec sheet |
| Slant/Fin |
Jaguar J-390C
Being verified
|
Condensing | natural gas | 90.2% | 390k | — | Spec sheet |
| Slant/Fin |
Intrepid Direct Vent
Being verified
|
Oil hot water | #2 fuel oil | 87% | 103k–132k | see Slant/Fin cast-iron boiler warranty | Spec sheet |
| Slant/Fin | Victory VSPH | Hot water | natural gas/propane | 86.1% | 60k–180k | lifetime limited | Spec sheet |
| Slant/Fin |
Intrepid Hot Water
Being verified
|
Oil hot water | #2 fuel oil | 86% | 89k–358k | see Slant/Fin cast-iron boiler warranty | Manufacturer |
| Slant/Fin |
Intrepid (steam)
Being verified
|
Oil steam | #2 fuel oil | 86% | 105k–469k | see Slant/Fin cast-iron boiler warranty | Spec sheet |
| Slant/Fin |
Intrepid (water)
Being verified
|
Oil hot water | #2 fuel oil | 86% | 105k–245k | see Slant/Fin cast-iron boiler warranty | Spec sheet |
| Slant/Fin | Sentry S-34-210 | Hot water | natural gas/propane | 84.4% | 34k–210k | lifetime limited (verify on certificate) | Spec sheet |
| Slant/Fin |
Galaxy GG
Being verified
|
Hot water | natural gas/propane | 84% | 95k–399k | lifetime limited (hot water models) | Spec sheet |
| Slant/Fin | Sentinel | Hot water | natural gas/propane | 82.3% | 70k–210k | lifetime limited | Spec sheet |
| Slant/Fin | Galaxy GXHA | Steam | natural gas/propane | 81.3% | 100k–200k | 10-year limited (steam) | Spec sheet |
| Slant/Fin | Galaxy GX/GXH/GXHA | Steam | natural gas/propane | 81.3% | 100k–300k | 10-year limited (steam) | Spec sheet |
| Takagi | TK-540X3 | Condensing | — | 95% | 60k–199k | 12 years | — |
| Takagi | T-H3S | Condensing | — | 95% | 50k–160k | 12 years | — |
| Takagi | TK-310C | Combi | — | 94% | 60k–199k | 12 years | — |
| Triangle Tube | Prestige Solo 110 | Condensing | — | 96% | 40k–110k | 10 years | — |
| U.S. Boiler Company | Ambient electric | Electric | electric | Not verified | — | — | — |
| U.S. Boiler Company | Aspen | Condensing | natural gas/propane | 96% | 9k–399k | lifetime limited | Spec sheet |
| U.S. Boiler Company | Alta | Condensing | natural gas/propane | 95% | 14k–200k | lifetime limited | Spec sheet |
| U.S. Boiler Company | Ambient HP | Air-to-water heat pump | electric | Not verified | — | — | — |
| U.S. Boiler Company | K2 | Condensing | natural gas/propane | 95% | 80k–180k | lifetime limited | Spec sheet |
| U.S. Boiler Company | ES2 | Hot water | natural gas | 85% | 70k–280k | Lifetime limited | Spec sheet |
| Utica |
AT electric
Being verified
|
Electric | electric | Not verified | — | 20 years (submittal) | Spec sheet |
| Utica | Oneida CO (combi) | Combi | natural gas/propane | 95.2% | 80k–200k | 10 years | Spec sheet |
| Utica | Oneida HE | Condensing | natural gas/propane | 95.2% | 80k–200k | 10 years | Spec sheet |
| Utica | MGB-K | Hot water | natural gas | 84% | 59k–235k | 20-yr non-prorated | Spec sheet |
| Utica | PEG E | Steam | natural gas | 83.4% | 75k–299k | 12-yr (current sheet; up from 10-yr) | Spec sheet |
| Utica | SFE V | Steam | oil | 82% | 126k–294k | 10-yr limited | Spec sheet |
| Viessmann |
Vitocrossal 200 CI2
Being verified
|
Condensing | natural gas/propane | 98% | 399k–2000k | — | Spec sheet |
| Viessmann |
Vitocrossal 300 CU3A
Being verified
|
Condensing | natural gas/propane | 98% | 19k–199k | — | Spec sheet |
| Viessmann | Vitodens 111-W | Combi | — | 97% | 57k–150k | 12 years | — |
| Viessmann |
Vitocrossal 300 CA3B
Being verified
|
Condensing | natural gas/propane | 96.1% | 2500k–6000k | — | Spec sheet |
| Viessmann | Vitodens 200-W | Condensing | natural gas/propane | 96% | 20k–199k | limited lifetime (residential) | Spec sheet |
| Viessmann | Vitodens 100-W | Condensing | natural gas/propane | 96% | 20k–120k | limited lifetime (residential) | Spec sheet |
| Viessmann |
Vitocrossal 200 CM2
Being verified
|
Condensing | natural gas/propane | 95% | 131k–2245k | — | Spec sheet |
| Viessmann |
Vitodens 222-F
Being verified
|
Combi | natural gas/propane | 95% | 12k–125k | limited lifetime (residential) | Spec sheet |
| Viessmann |
Vitocal 100-AW
Being verified
|
Air-to-water heat pump | electric | Not verified | 21k–58k | — | Spec sheet |
| Viessmann |
Vitorond 200
Being verified
|
Oil hot water | oil | 87.9% | 490k–4387k | — | Spec sheet |
| Viessmann | Vitorond 100 | Oil hot water | oil | 86% | 91k–245k | residential limited 20-year cast-iron section (commercial 10-year) | Spec sheet |
| Weil-McLain | Ultra Series 3 | Condensing | — | 95% | 80k–399k | 15 years | — |
| Weil-McLain | Evergreen Pro | Condensing | natural gas/propane | 95% | 110k–399k | lifetime limited | Spec sheet |
| Weil-McLain | Simplicity | Combi | natural gas/propane | 95% | 110k–199k | lifetime limited | Spec sheet |
| Weil-McLain | AquaBalance Series 2 | Combi | natural gas/propane | 95% | 80k–155k | 10-year limited residential / 5-year limited commercial | Spec sheet |
| Weil-McLain | ECO Tec | Condensing | natural gas/propane | 95% | 80k–199k | 12-year residential / 10-year commercial primary heat exchanger (brochure) | Spec sheet |
| Weil-McLain | Ultra Gas Series 4 | Condensing | natural gas/propane | 94.1% | 80k–399k | 12-year residential / 10-year commercial (Ultra Series 4 brochure) | Spec sheet |
| Weil-McLain | GV90+ | Condensing | natural gas/propane | 91.9% | 70k–175k | primary (cast iron) 20-year, secondary (stainless) 5-year | Spec sheet |
| Weil-McLain | Ultra Oil | Oil hot water | oil | 87% | 112k–196k | 20-year | Spec sheet |
| Weil-McLain | WGO/WTGO Series 4 | Oil hot water | oil | 87% | 98k–357k | 20-year | Spec sheet |
| Weil-McLain | SGO Series 4 | Oil steam | oil | 85% | 133k–357k | 10-year | Spec sheet |
| Weil-McLain | CGi Series 4 | Hot water | — | 84% | 75k–175k | Lifetime | — |
| Weil-McLain | CGa Series 4 | Hot water | natural gas/propane | 84% | 38k–233k | 20-year | Spec sheet |
| Weil-McLain | EG Series 6/7 | Steam | natural gas/propane | 84% | 75k–282k | 10-year (EG/PEG steam) or 20-year (EG water) | Spec sheet |
| Weil-McLain | CGi Series 5 | Hot water | natural gas/propane | 84% | 48k–222k | 20-year residential / 10-year commercial limited transferable (CGi Series 5 sales flyer) | Spec sheet |
| Weil-McLain | EG-45 | Steam | — | 82% | 105k–175k | Lifetime | — |
Not sure which type fits your home? Read our steam boiler guide, combi boiler guide, or see boiler installation and boiler repair.
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Understanding Long Island Utility Rebates
Nassau County is served by multiple utilities with different rebate programs
PSEG Long Island
Electric
Serves all of Nassau County. Offers rebates for high-efficiency heating equipment.
- Boiler 92%+ AFUE:$500-$1,000
- Furnace 95%+ AFUE:$300-$500
National Grid
Gas
Gas service varies by location. Northern Nassau (Great Neck, Manhasset, Port Washington) and southern areas have different programs.
- •Check if your address qualifies for gas rebates
- •May stack with PSEG electric rebates
Our team will help you identify all available rebates during your free estimate. We handle the paperwork for you.
Our Process
How We Rank Boiler Brands
Our rankings are based on real-world experience—not manufacturer sponsorships or advertising.
Blake Ruwali
HVAC Expert, Home+ Air & Heat
⚠️ About Our Ratings
Our ratings reflect our professional assessment based on installation experience, service call frequency, and component quality—not aggregated consumer reviews.
Ranking Criteria
Reliability & Build Quality
+25%25%
Installer judgment from servicing and replacing these brands, plus manufacturer heat-exchanger warranty terms
Efficiency (AFUE)
+20%45%
Annual Fuel Utilization Efficiency ratings and real-world performance
Warranty Coverage
+20%65%
Heat exchanger, parts, and labor warranty terms
Parts Availability
+15%80%
How easily parts can be sourced through supply houses for repairs
Value for Money
+10%90%
Total cost of ownership over 20+ year lifespan
Installer Experience
+10%100%
Ease of installation and technical support quality
Why Trust Our Rankings
No paid placements
35+ years of combined field experience
Our efficiency ratings align with federal standards:
Disclosure: We are an authorized Mitsubishi Electric dealer, and we install and service the other brands listed here. Our rankings are based solely on performance and customer satisfaction, not dealer agreements.
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