
Lennox
GWB8-E Boiler
Constructed of high-quality materials, including a cast iron heat exchanger and stainless steel burners, the GWB8-E boiler delivers reliable heating performance season after season.
Product Specifications
- Electronic ignition control—monitors water temperature and maximizes efficiency by turning on the burner only when needed - Thick fiberglass insulation—minimizes off-cycle heat and energy loss - Vent damper—automatically closes when the boiler turns off, maintaining energy efficiency
Home Comfort
- Easy integration—works with traditional radiator systems to provide precise heating comfort, regardless of outdoor temperatures
Reliable Performance
- Cast iron heat exchanger—designed for years of long-lasting reliability - Versatile installation—available in nine sizes for installation virtually anywhere in the home, and can be fueled by natural* or LP gas - Stainless steel burners—provide greater resistance to corrosion and oxidation**

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What Customers Say About our Services
I recently had my old 50 Gallon storage tank replaced with Bosch T9800 Tankless water heater. This is indeed a great product and has a lot to offer as far as the hot water supply is concerned which is unlimited. This is my first experience using a tankless and I am glad that I chose Bosch brand. - Todd From Markham
A friend of mine recommended me to buy Bosch brand tankless water heater as I was already looking for a tankless and did a lot of research. Eventually I ended up buying Bosch T9800 SE 166 which was a perfect match for my requirement. I must say that Bosch brand appliances are very much reliable and innovative. - Daniel From Stoney Creek
I had an old boiler and it was time for replacement. My friend suggested me about cosmopolitan. The representative was so knowledgeable and answered all my questions. Arshad visited my house and showed me some good high efficiency boilers. The service they provide is excellent and highly recommended. - Lucas From Toronto
I got my complete HVAC system replaced by cosmopolitan mechanical service and found them very knowledgable and professional. Everything went smooth from the sales presentation to the expert installation job.I will strongly recommend cosmopolitan mechanical service. - Gabrielle From Hamilton
Ather fixed my furnace today and I was very impressed with his work. He has an old school work ethic combined with current knowledge of technology. He was a real gentleman. Thank you for sending him. - Anne Rankin From Etobicoke
We bought a new home and needed Air conditioner and Furnace. We emailed Several companies, Cosmopolitan e-mailed me with information about the job needed to be done. A service adviser came our home. Friendly and trustworthy are definitely true features when working with a company like Cosmopolitan. - Linda From Mississauga