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.

Questions about this model?

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

Read Reviews of Other Lennox Products

Find ratings and reviews for Lennox Air Conditioners, Boilers and more

Read Reviews

Top 10 Boilers

See who made our list of the best Boilers of 2022.

See the Top Products

Find a Certified Heating & Cooling Professional In Your Area

Contact a top-rated local expert to help with all of your home's HVAC needs.

Lennox GWM-IE Boiler Reviews

Showing 11-15 of 24 reviews

"From freezing cold to toasty warm"

5.0 rating
Very Satisfied

I have owned this boiler for a little less than a year. I bought this boiler in November and it has kept me warm all winter without any problems. I like the fact that it keeps my house warm while still being efficient. It's saved me a lot on my energy bill and I don't have to sacrifice my comfort in my home temperature-wise. I've seen a huge difference in my bills as compared to my previous boiler. I don't have any dislikes about it thus far, but it might be a little big for some homes/might take up too much space for some homes. I have never had to repair or replace it. I would recommend this brand to a friend. So far it has been very reliable and every time that I have contacted Lennox about the product they have been very friendly and were able to help me.

Wheaton, IL

"Lennox Boiler – Very Satisfied"

5.0 rating
Very Satisfied

My fiance and I had this boiler installed in our home about two years ago, and so far everything has been perfect! We mostly didn't know much about boilers and chose this boiler initially just because we were familiar with the brand and had read a few good reviews. It helped to cut my heating bills – always a plus! We have never had to repair or replace it, but we do have the 15-year warranty, so I'm not too worried about it. Price was great for the quality. Highly recommended!

Akron, OH

"A new world with a New Boiler"

5.0 rating
Very Satisfied

I bought this boiler recently (in the last six months) for a home that I just purchased. Even though I live in Florida, an area where heat is not often a priority, there are winters that require more than others. Plus, being older, I like it warmer than I used to. This boiler was purchased in January and reduced my heating bills from the couple of months using the old boiler by a third. I was not overly happy with some of the installation problems I had but after a couple of tries I think we have ironed out everything. I would heartily recommend this unit but be careful of the contractor you choose.

Temple Terrace, FLorida

"A step up in the right directions for my kids"

5.0 rating
Very Satisfied

Unfortunately my kids heat pump broke down this last winter, and it was broken beyond repair. So, I decided I would buy them a boiler. I decided to go with this boiler because of the good reviews, and boy was that a good decision. I bought it about 6 months ago, and their heating bills have pretty much dropped in half. The install wasn't the easiest, but It sure has saved them, and me, because I would sometimes help out with the bills, quite a bit of money. One thing I don't like about it is the lack of a filter. But I only don't like that because, well, I like being able to see whats being filtered out. But that's just being nit picky. You really don't need a filter on these because they're just recycling water to heat the house. I would definitely go with this boiler again and would recommend it to most of my friends. There are a few situations where a boiler wouldn't work depending on your piping, but for most, it's A-okay.

Vancouver, WA

"Lennox GWM-IE Boiler Works Beautifully!"

5.0 rating
Very Satisfied

I bought this boiler about a year and a half ago after buying a property and deciding to flip it. The first thing I noticed was how quiet it ran! After being unable to sell the home, I decided to rent it out. That meant I had to be doing the maintenance. That boiler has not caused me a single problem thus far. I believe that with yearly maintenance this boiler should work for a very long time to come. I would recommended this Lennox boiler to my friends and to my family who are in need of replacing or updating their current boiler.

Cedar Rapids, Ia

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.

HVAC Brands

Learn more about your home's heating and cooling system with our guides, how-to's, FAQ's, tips and more.

Ready to get a quote from an HVAC contractor?

Let us know what type of service you need and we can connect you with a certified local HVAC contractor.

Please enter a valid name

Please enter a valid phone number

Please enter a valid zip code

There are no dealers in this zip code.

Please enter a valid email address

Please select repair or replace

Please select heating, cooling or both