Lochinvar
Weil-McLain
Lochinvar vs Weil-McLain
Expert head-to-head boiler comparison by Nassau County installers with 35+ years of combined experience.
Head-to-Head Scorecard
Lochinvar
1 win
Weil-McLain
2 wins
Weil-McLain leads overall
Performance Score Rings
Lochinvar
premiumTop Strengths
- Commercial-grade engineering
- 96% AFUE efficiency
- Stainless steel fire-tube design
Watch Out For
- Premium commercial-tier pricing
- Larger footprint than residential units
Weil-McLain
premiumTop Strengths
- 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
Watch Out For
- Higher upfront cost than Korean and Chinese competitors
- Cast iron units may require crane for tight basement access
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Expert Verdict
Lochinvar is the stronger pick for high-efficiency condensing gas boilers; Weil-McLain is the stronger pick for cast iron, oil and steam systems.
Pick Lochinvar when…
You are on natural gas and want a modern condensing boiler with a wide sizing range and commercial-grade engineering.
Full Lochinvar reviewPick Weil-McLain when…
You have a steam system, burn oil, or want the widest local parts availability for a cast iron boiler.
Full Weil-McLain reviewCategory-by-Category Breakdown
Click any category to see why one brand wins.
Full Specification Comparison
| Spec | Lochinvar | Weil-McLain |
|---|---|---|
| Overall Rating |
4.6/5
|
4.9/5
|
| Price Range (Installed) |
$5.5k – $13.0k
|
$4.5k – $12.0k
|
| AFUE Range |
95–96%
|
84–95%
|
| Parts Warranty |
5 years
|
2 years
|
| Heat Exchanger Warranty |
15 years
|
Lifetime (cast iron)
|
| Founded |
1939
|
1881
|
| Country |
USA
|
USA
|
| Parent Company |
Lochinvar LLC
|
Marley-Wylain
|
Warranty Comparison Timeline
* All warranties shown assume product registration. Unregistered units typically receive 5-year coverage.
Visual Comparison
Pros & Cons
Lochinvar
Strengths
- Commercial-grade engineering
- 96% AFUE efficiency
- Stainless steel fire-tube design
- SMART SYSTEM connectivity
- 12-year heat exchanger warranty
Weaknesses
- Premium commercial-tier pricing
- Larger footprint than residential units
- Requires experienced installers
- May be overkill for smaller homes
Weil-McLain
Strengths
- 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
- Proven 143+ year track record in American homes
- Ultra Series 3 & 4 qualify for PSEG Long Island rebates up to $1,000
Weaknesses
- Higher upfront cost than Korean and Chinese competitors
- Cast iron units may require crane for tight basement access
- Annual maintenance essential for coastal Long Beach and Island Park homes
- No combi boiler options - separate water heater required
Need Help Choosing Between Lochinvar and Weil-McLain?
We install and service both brands. Get a free, no-pressure quote.
Long Island Installation Guide
Long Island Installation Guide
Weil-McLain is everywhere in older Nassau County basements, especially on steam. Lochinvar shows up in oil-to-gas conversions and larger homes. We service and install both across Nassau and western Suffolk.
Climate Zone 4A
Coastal Salt Air
PSEG Rebates
Customer Reviews
❓Lochinvar vs Weil-McLain FAQ
Is Lochinvar or Weil-McLain better for Long Island homes?
Lochinvar is the stronger pick for high-efficiency condensing gas boilers; Weil-McLain is the stronger pick for cast iron, oil and steam systems.
Which is cheaper to install in Nassau County, Lochinvar or Weil-McLain?
Lochinvar ranges from $5.5k – $13.0k installed, while Weil-McLain ranges from $4.5k – $12.0k installed in Nassau County.
Are Lochinvar and Weil-McLain made by the same company?
No. Lochinvar is made by Lochinvar LLC, while Weil-McLain is made by Marley-Wylain.
What warranty does Lochinvar offer vs Weil-McLain?
Lochinvar offers 5 years parts warranty and 15 years heat exchanger warranty. Weil-McLain offers 2 years parts warranty and Lifetime (cast iron) heat exchanger warranty.
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