Lennox GSB8-E Boiler Overview

The Lennox GSB8-E is a gas-fired steam boiler with an efficiency rating of up to 83.9% AFUE. The GSB8-E features a cast iron heat exchanger designed for long lasting durability and titanium burners for increased resistance to corrosion. The unit’s thick fiberglass insulation reduces energy loss while helping to lower sound levels. An electronic ignition control which turns the burner on only as needed and a vent damper that closes automatically when the boiler turns off both help to increase efficiency.

Questions about this model?

Consumer Reviews of Lennox GSB8-E

5

  • Very Satisfied
    2
  • Somewhat Satisfied
    0
  • Neutral
    0
  • Somewhat Unsatisfied
    0
  • Very Unsatisfied
    0
  • #1 of 5 Lennox Boilers
  • 100% of customers recommended

Reviews by Boiler Series

Conservator GWM-IE GWB8-E GWB8-IE

Read Reviews of Other Lennox Products

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

Read Reviews

Top 10 Boilers

See who made our list of the best Boilers of 2019.

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 Boiler Reviews

"Efficient and Long Lasting."

5.0 rating
Very Satisfied

I have owned this boiler for about 14 months. I am extremely satisfied with it. I like that it came with 2 different manufacturer warranties. Both a 12-year warranty and a 5-year warranty for the heat exchanger and all parts respectively. I have absolutely no complaints about the boiler, because I have not had any problems with it nor have I had to have any repairs. I would recommend the same product to anyone who is currently looking to purchase a boiler for their home. I would also recommend the boiler as it is extremely reputable and carried quite a bit of weight with it. If you are looking to purchase a boiler to use in the home that you will live in for a long time or if you're looking to buy one and then sell the house this is a great option.

Kansas City Missouri

"Review of Lennox GSB8-E Boiler"

5.0 rating
Very Satisfied

As a tenant, renting a home means accepting the appliances already installed on the property. The Lennox GSB8-E boiler proved to be an excellent machine. It is worth noting that the home in which the boiler is installed is old; the windows are old; the insulation is not fantastic; and the home is located in Michigan. This boiler operated efficiently, and quickly. Upon returning home and turning up the thermostat, one only had to wait a few minutes before noticing a pleasant difference. Utility bills were reasonable, and I feel this boiler's efficiency in heating a reasonably well-insulated house during cold Michigan winters played a large role in my overall monthly utility savings. My only complaint would be the noise level when the boiler is running. It is not too loud, however, and in a well-insulated home would probably be hardly noticeable. I would absolutely recommend this boiler to friends and family.

Kalamazoo, Michigan

Other GSB8-E Reviews

There are very few online reviews of the GSB8-E on HVAC forums. A homeowner on heatinghelp.com asked for opinions regarding the GSB8-E and a comparable Weil-McLain unit. There was no clear favorite, with most responders saying that the installation and making sure the boiler is properly sized is more important than the brand, especially with steam.

GSB8-E Warranty

Product registration is required within 60 days of installation for maximum warranty coverage. The warranty for the Lennox GSB8-E boiler is comprised of the following:

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

Labor costs are not covered by the warranty.

Best Heating & Cooling Products

See ratings and reviews for the best in furnaces, air conditioners, heat pumps, boilers and more.

HVAC Brands

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


Trane American Standard Lennox Carrier Goodman

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

Please enter a valid email address

Please select repair or replace

Please select heating, cooling or both