Lennox GWM-IE Boilers

Lennox GWM-IE Boiler Overview

The Lennox GWM-IE is a wall-mounted, gas modulating condensing water boiler. It has an efficiency rating of up to 95% AFUE and earned the Energy Star Most Efficient 2014 label. The unit features an electronic ignition control which monitors water temperature and turns on the burner only when necessary, and its sealed combustion design is intended to reduce sound. The stainless steel, finned tube heat exchanger is self-cleaning, while the stainless steel mesh burner is corrosion resistant. A CPVC flue condensate collector offers protection against corrosion and leaking.

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Consumer Reviews of Lennox GWM-IE


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #2 of 6 Lennox Boiler
  • 95.83% of customers recommended

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Lennox GWM-IE Boiler Reviews

Showing 21-24 of 24 reviews

"Great boiler for your buck"

5.0 rating
Very Satisfied

I have owned my boiler for just a few months and I absolutely love its performance. It is a little big for the space that I have available, but even being as big as it is, it's worth every penny. Not only has my heating bill decreased by about 25%, my home feels warmer quicker and without the nasty smell I've gotten when using other boilers. Prior to replacing my older boiler, I did about two months of research and discovered that other user reviews were not wrong. This is the best boiler in the market right now if you are looking for an efficient, energy saving, and valuable boiler. This truly is the best boiler for your money. I will and have recommended it to my friends and family.

Miami, FL

"Lennox boilers are the way to go!"

5.0 rating
Very Satisfied

My Lennox GWM-IE boiler is my dependable boiler for all my housing needs. I've never had any issues or outages or needed to repair it in any shape or form. I love knowing that I'm getting efficient use out of it and it stays quiet in its use. The shape is easy to fit in my basement and is ergonomically easy to place and move around as need be. My family has only experienced reliable comfort through our Lennox boiler. I've had this model for about a year now and no complaints thus far. It really is different from other boilers in that it only uses up as much as my family and I need. I feel like previous boilers broke down more often because they were generating heat when it wasn't needed. I have also called customer service about routine questions and have always been met with courteous help. Couldn't ask for much more and I would highly, highly continue purchasing from Lennox and recommending their brand and appliances to friends and family — in fact, I already have many times over!

New York, NY

"I wouldnt trade this in for another one!"

4.0 rating
Somewhat Satisfied

I have only had this boiler for less than a year. I moved into a foreclosed home and had to purchase it. I love this boiler. My last home was all electric so I knew what my bill would have been if I would have stuck with using electric instead of the boiler. So far I have not had to replace nor repair it. It is running like a champ. I was recommended this by a gentleman at Lowes who has the same boiler in his home. At first I was skeptical and thought he was just telling me his story so I would purchase it, but I was wrong. This thing is amazing! I would recommend this to a friend. It has really helped with keeping my bill low and still being just as nice as using electric. Of course we all need lower bills and this will help tremendously!

Birmingham, AL

"My review of my Lennox GWM-IE"

5.0 rating
Very Satisfied

I've had this boiler for about six months. I bought this boiler in October of last year, right about the time that it started to get chilly. I remember how high our heating bills got and I wanted to do something about it this winter. Had this installed and my heating bills were cut in half compared to the previous year. I haven't really had it that long, so I haven't needed to repair anything on it yet, but I have been told by others that they last a long time. I like it because of Lennox's reputation and warranty, and because it's Energy Star qualified. I am very happy with this boiler, and I plan on having it a long time. I would definitely buy it again, and would (and have) recommended it to my friends and family. If you're looking for a boiler, look no further than Lennox.

Dothan, AL

Other GWM-IE Reviews

There are very few online reviews regarding the GWM-IE on HVAC forums. In reply to a consumer asking about the GWM-IE on hvac-talk.com, several professionals said they preferred other brands, with most mentioning a similar model by Weil-McLain. It was also mentioned repeatedly that installation matters more than the brand or model.

GWM-IE Warranty

Product registration is required within 60 days of installation for maximum warranty coverage. The warranty for the Lennox GWM-IE boiler is comprised of the following:

  • 15-year limited warranty on the heat exchanger
  • 10-year limited warranty on remaining covered components

Labor costs are not covered by the warranty.

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