Rheem Water Heaters Review 2026
Best overall water heater brand
UEF Range
0.67–3.75
Types
3
Price Range
$$$
Tank Warranty
12 years
Origin
USA
2026 Incentive Check
Federal 25C ended after 2025. Current utility or manufacturer eligibility for a Rheem heat pump water heater must be confirmed for the exact model and project.
Verify in Writing
Also read: this brand on other pages
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Is Rheem water heater any good?
Yes — Rheem water heaters are a premium-tier choice. Our editorial score is 4.8/5 based on published efficiency, climate fit, warranty, features, and price positioning. Rheem is associated with Rheem Manufacturing; confirm the exact model platform, parts path, and coverage rather than assuming they are shared. For a Long Island home, compare the exact matched system and written installation scope because design and commissioning can matter as much as the badge on the equipment.
Our Review Process
Ratings are editorial comparison scores—not customer reviews, installation counts, or manufacturer endorsements.
Rheem Water Heater Planning for Nassau County & Covered Western Suffolk Areas
A useful Rheem comparison starts with the exact indoor and outdoor model pairing—not the brand name alone. Home+ Air & Heat can review Rheem water heater options for homes in our covered Nassau County and western Suffolk service areas, then document whether the proposed equipment, capacity, electrical scope, and installation approach fit the project.
Before work is authorized, ask for the design method, AHRI match where applicable, installer or dealer qualification required by the manufacturer, registration responsibility, parts coverage, labor coverage, exclusions, and current incentive assumptions in writing. Those details vary by model, project, contractor status, installation date, and current program rules.
Who Makes Rheem Water Heaters?
Rheem water heaters are built by Rheem Manufacturing Company, founded in 1925 and headquartered in Atlanta, Georgia. Rheem has been owned by Paloma Co., Ltd. of Japan since 1988. Tank water heaters for the U.S. market are produced at Rheem's Montgomery, Alabama plant, and the same company also builds Ruud and Richmond equipment.
Brands from the same manufacturer: Ruud, Richmond, Raypak, Eemax. Equipment sold under sibling labels often shares components and plants, so the installing contractor — not the badge — usually decides how the system performs.
Planning a Rheem project on Long Island? See how we install and size it for Nassau & western Suffolk homes →
Rheem Water Heater Reviews: Our Installer Assessment
Rheem rates 4.8 out of 5 in our premium-tier water heater assessment. The scoring reflects build quality, parts availability on Long Island, warranty terms, and how the equipment holds up in the homes we service. Best for: Best overall water heater brand. Reviews are only half the picture — sizing and installation quality drive most of the failures we get called to.
This is Home+ Air & Heat's own editorial assessment as an insured, EPA 608-certified installing contractor, not an average of customer star ratings.
What reviewers and installers praise
- • Industry leader in all water heater types
- • Excellent Long Island parts availability
- • ProTerra hybrid heat pump line
- • EcoNet smart connectivity
Complaints worth knowing before you buy
- • Premium pricing
- • Some models require dedicated gas line upgrades
How to judge a Rheem quote
- • Ask for the exact model numbers and the load calculation behind the sizing.
- • Confirm who registers the warranty and what labor coverage is included, in writing.
- • Check that the installer is qualified for the specific line, not just the brand.
- • Compare total installed scope — venting, electrical, and permits — not just equipment price.
Expert Review: Rheem
First-hand experience from our Nassau County water heater installation team.
Our Field Experience with Rheem in Nassau County
As Home+ Air & Heat, we’ve been installing and servicing water heaters across Jericho and wider Nassau County for years. When it comes to Rheem, our experience has been overwhelmingly positive. Their reputation as an industry leader is well-deserved, and we've found their units to be consistently reliable and robust. We appreciate the excellent parts availability on Long Island, which makes servicing straightforward and keeps our customers' downtime to a minimum. From standard tank models to their advanced ProTerra hybrid heat pump line, Rheem offers a solution for nearly every home and budget, even if it leans towards the premium end.
Handling Long Island's Hard Water and Coastal Conditions
Long Island’s water, particularly in Nassau County, is known for its hardness. This can be a significant challenge for water heaters, leading to sediment buildup and reduced efficiency over time. Rheem water heaters are built with durable components that stand up well to these conditions. Many models feature self-cleaning elements or have anode rods designed to combat corrosive elements. Furthermore, the coastal environment and fluctuating temperatures here demand resilient equipment. Rheem
Blake Ruwali
EPA 608-Certified HVAC Technician
Pros
- Industry leader in all water heater types
- Excellent Long Island parts availability
- ProTerra hybrid heat pump line
- EcoNet smart connectivity
Cons
- Premium pricing
- Some models require dedicated gas line upgrades
Rheem Key Specifications
UEF Range
0.67–3.75
Price (Installed)
$1,200–$5,500
Tank Warranty
12 years
Types Available
3
Rheem Water Heater Models We Install
Detailed specs and pricing for Rheem models available for Nassau County installation.
Rheem ProTerra Plug-In Heat Pump Water Heater 65-Gallon
Model: XE65T10HD50U1
Installed Price
$3,200–$4,800
Rheem's flagship heat pump water heater with 3.75 UEF. The federal 25C credit ended for property placed in service after December 31, 2025. Any current utility or manufacturer program needs written confirmation for the selected model and project.
UEF
3.75
1st Hr Rating
73 gal
Capacity
65 gal
Pros
- 3.75 UEF — highest efficiency in class
- The federal 25C credit ended for property placed in service after December 31, 2025. Any current utility or manufacturer program needs written confirmation for the selected model and project.
- Built-in WiFi with EcoNet app
Cons
- Higher upfront cost than standard electric
- Needs 700+ sq ft of surrounding air space
- May cool the room it's installed in
Rheem Performance Platinum 50-Gallon Natural Gas Water Heater
Model: XG50T12DM40U0
Installed Price
$1,800–$2,800
Premium gas tank water heater with 12-year warranty and 89-gallon first-hour rating.
UEF
0.7
1st Hr Rating
89 gal
Capacity
50 gal
BTU
40k
Pros
- 89 first-hour rating — great for families
- 12-year tank & parts warranty
- Push-button piezo ignition
Cons
- 0.70 UEF is decent but not outstanding
- Standard atmospheric venting required
- Heavier than comparable models
Rheem RTEX-18 18kW Tankless Electric Water Heater
Model: RTEX-18
Installed Price
$1,200–$2,200
Compact electric tankless unit with 0.99 UEF, ideal for point-of-use or smaller homes.
UEF
0.99
Flow Rate
4.4 GPM
Pros
- 0.99 UEF — nearly perfect efficiency
- Compact wall-mount design
- Digital temperature control
Cons
- Limited flow rate for cold climates
- Requires 2x 40-amp breakers
- Not ideal for whole-house in large homes
Rheem Performance 40-Gallon Natural Gas Tank
Model: XG40T06EC36U1
Installed Price
$1,500–$2,200
The most popular like-for-like replacement for older 40-gallon gas tanks across Nassau County.
UEF
0.58
1st Hr Rating
70 gal
Capacity
40 gal
BTU
36k
Pros
- Most affordable Rheem option
- Easy direct replacement for Long Island homes
- Wide parts availability
Cons
- Standard 6-year tank warranty (not 12)
- Lower 0.58 UEF vs Platinum line
- No smart features
Rheem Marathon 50-Gallon Polybutene Tank
Model: MR50245
Installed Price
$1,900–$2,700
The only Rheem with a lifetime tank warranty — built for Nassau County hard water.
UEF
0.92
1st Hr Rating
67 gal
Capacity
50 gal
Pros
- Lifetime tank warranty — never rusts
- Polybutene tank perfect for Long Island hard water
- No anode rod required
Cons
- Electric only — no gas option
- Higher upfront cost than steel tanks
- Slower recovery than gas
Rheem Gladiator 50-Gallon Smart Electric Tank
Model: XE50M12CS55U1
Installed Price
$1,400–$2,100
Smart-home tank with built-in leak detection and Wi-Fi alerts.
UEF
0.93
1st Hr Rating
62 gal
Capacity
50 gal
Pros
- EcoNet Wi-Fi smart control
- Leak detection with auto shutoff
- 12-year tank warranty
Cons
- Electric-only (slower recovery than gas)
- Requires Wi-Fi for smart features
- Larger footprint than standard 50-gal
Rheem Warranty Coverage
Tank
12 years
Parts
12 years
Labor
1 year
Warranty terms require professional installation and product registration. We handle all warranty registration for our customers.
Rheem Water Heater Cost in 2026
A Rheem water heater costs $1,200–$5,500 installed on Long Island, depending on the fuel type, capacity, venting, and code-required upgrades. That range covers the equipment, standard installation labor, permit, and haul-away of the old unit — exact pricing is confirmed in writing after a short in-home assessment.
Rheem Installed Range
$1,200–$5,500
Premium tier ($$$) • 12 years tank warranty
What moves the price:
- Fuel type and capacity (tank vs. tankless vs. heat pump)
- Venting, gas-line, or electrical upgrades required by code
- Permit, expansion tank, and haul-away scope
- Heat pump models may qualify for PSEG-LI instant rebates
Prices reflect typical Nassau County installations including labor, materials, and permits. Federal 25C ended after 2025; current heat pump water-heater incentives vary by model and program.
Rheem Water Heater Cost by Size (40, 50 & 75 Gallon)
A standard 40-gallon tank replacement starts at $3,700 installed on Long Island, a 50-gallon tank from $4,100, and a 75-gallon tank from $5,900. Capacity is only part of the answer — the first-hour rating, fuel type, venting and code-required upgrades decide the final written price.
| Size / type | Fits | Installed |
|---|---|---|
| 40-gallon gas tank | 1–3 people, 1–2 bathsBaseline like-for-like replacement including permit and haul-away | From $3,700 |
| 50-gallon gas tank | 3–4 people, 2 bathsMost common upsize when the old 40 ran short on back-to-back showers | From $4,100 |
| 75-gallon gas tank | 5+ people, 3+ baths or a soaking tubOften needs venting and gas-line review before it can be approved | From $5,900 |
| 50-gallon electric tank | 3–4 people, no gas serviceElectrical circuit and breaker capacity confirmed on site | From $3,400 |
| Heat pump water heater | Basement or utility-space installsPSEG-LI instant rebate of $1,000–$1,200 applies to qualifying models | From $4,900 |
| Tankless (gas) | Continuous hot water, space savingsConversion project: venting, gas capacity, condensate and water quality | From $6,500 |
What size water heater do I need?
- Match the first-hour rating to your busiest hour, not just the gallon number on the label
- Add capacity if showers run back-to-back or a soaking tub is in use
- Tankless is sized by peak flow and incoming water temperature, not gallons
- Heat pump models need clearance and air volume around the unit
Rheem Brand History
Founded in 1925
Rheem has been manufacturing water heaters for over 101 years. Proudly American-made.
Part of Rheem Manufacturing
Rheem Manufacturing also manufactures Ruud, Richmond, Marathon (Rheem) — sharing engineering and manufacturing platforms.
How Rheem Compares
| Metric | Rheem | A.O. Smith |
|---|---|---|
| Rating | 4.8/5 | 4.7/5 |
| Price (Installed) | $1,200–$5,500 | $1,100–$5,000 |
| UEF (Max) | 3.75 | 3.5 |
| Tank Warranty | 12 years | 12 years |
| Tier | premium | premium |
Head-to-head comparisons
Who Should Choose Rheem?
Large Families
Rheem tank models deliver high first-hour ratings for back-to-back showers.
Small Homes
Compact Rheem units save space — ideal for Nassau County Cape Cods and ranches.
Energy Savings
Rheem heat pump models reach UEF ratings up to 3.75. Federal 25C ended after 2025; verify current utility or manufacturer eligibility in writing.
Rheem FAQs
Ready for a Rheem Water Heater?
Get a free, no-pressure quote from our certified technicians who install Rheem water heaters regularly.
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The brand matters less than the installer
A great water heater installer on Long Island will outperform a premium unit installed poorly. Use the verification checklist and three-estimate worksheet before you sign anything.
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🔥 Water Heater Buying Guide
Tank vs tankless vs heat pump — find the right water heater for your Nassau County home.
Read the Guide →About This Review
Amy Milani
Writer
Blake Ruwali
EPA 608-Certified Reviewer
Updated:
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