Weil-McLain ECO Boiler Overview

The Weil-McLain ECO is a wall mount gas boiler with an efficiency of up to 95% AFUE. The ECO is Energy Star qualified and features a stainless steel fire tube heat exchanger with a corrosion-resistant polypropylene condensate collection base. It has an easy to use control with a large LCD display which can be mounted on the boiler or up to 2 feet away on the wall. Removable control terminal blocks help provide easy electrical connections, while gas valve, blower, heat exchanger and control module components are positioned for easy service.

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Consumer Reviews of Weil-McLain ECO


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #1 of 10 Weil-McLain Boiler
  • 100% of customers recommended

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Weil-McLain ECO Boiler Reviews

"Eco 110 natural gas boiler"

5.0 rating
Very Satisfied

The Eco 110 boiler replaced our fuel oil boiler last year. Very happy with saving 48% on home heating costs ( $1720 oil vs $925 gas). Very user friendly controls. Making adjustments to the outdoor reset function is easy. Just recently replaced our electric water heater with a 40 gallon indirect unit tied to the Eco boiler. Recovery time is so quick it's like endless hot water.

M. Hoskey

Central Ohio

"Review of the Weil Mclain boiler model number 383-800-002"

5.0 rating
Very Satisfied

I have had this particular boiler for 2 years and am very satisfied with it. It works quickly and efficiently it was very easy to install and the instructions that came with it were very easy to understand. I currently do not have any dislikes. I would definitely buy the same brand again and would very likely refer it to a friend if they were in need of one. I really like the fact that it came with a 10-year limited warranty, which was very important to me as a homeowner.

Palmyra, NY

"Great boiler to own, eco-friendly, affordable!"

5.0 rating
Very Satisfied

I've owned this Weil-McClain Eco 155 boiler for almost going on one year and I love the thing. It is super energy efficient, quiet, makes hot water fast, and was an affordable competitive price with similar models. I don't really have any complaints about this boiler, as it works great. It's never needed repaired or replaced and I fell like it will last a long time. I would definitely buy this brand again and recommended it to all my friends.

Casper, WY

Other ECO Reviews

A common problem with the ECO mentioned on several HVAC forums is constant cycling. A homeowner on doityourself.com asked for advice on an ECO boiler that was constantly cycling. Members on the site had several suggestions, but then the homeowner called Weil-McLain tech support and found that the problem was caused by a burner gasket which needed to be replaced. A consumer on heatinghelp.com asked why his ECO was so inexpensive and was told that it is a bare-bones unit, with just the basics.

ECO Warranty

The warranty for the Weil McLain ECO boiler is comprised of the following:

  • 12-year limited heat exchanger warranty
  • 2-year limited parts warranty

Labor costs are not covered by the warranty.

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