GWB9-IH Boiler

Lennox GWB9-IH High-efficiency Gas-fired Water Boiler

The GWB9-IH is designed to integrate easily into a traditional radiator system. Its lightweight and compact design allow flexible installation inside your home. Fuel flexibility lets you use either natural or LP gas as a heat source.
HIGH-EFFICIENCY, GAS-FIRED WATER BOILER
Engineered for lasting comfort and energy savings.

Categories: Boilers, Gas-Fired Water Boilers Tag: Lennox

Features

Smart with energy use

With an efficiency rating of up to 90% AFUE, the GWB9-IH Boiler allows you to stay comfortable during even the coldest weather, without worrying about energy costs.

Flexible installation means you have options

The GWB9-IH is designed to integrate easily into a traditional radiator system. Its lightweight and compact design allow flexible installation inside your home. Fuel flexibility lets you use either natural or LP gas as a heat source.

Tested and proven for dependable performance

Every unit is fire-tested and inspected prior to shipping to ensure the highest possible degree of operating reliability. So you can take comfort knowing the boiler will deliver dependable performance, season after season.

Comforting warmth, right when you want it

The cast-aluminum heat exchanger in the GWB9-IH transfers heat three times faster than conventional cast-iron heat exchangers. So you enjoy rapid warmth when you need it.

Lennox GWB9-IH High-efficiency Gas-fired Water Boiler Brochure

Lennox GWB9-IH High-efficiency Gas-fired Water Boiler Manual

Feature	GWB9-IH Boiler
Efficiency	Up to 90% AFUE
Fuel Source	Natural Gas; convertible to LP
Sizes/Capacities	Three
Burner Type	Stainless Steel
Ignition	Hot Surface
Warranty	15-Year Limited Warranty on Heat Exchanger; 10-Year Limited Warranty on covered parts

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David Tsuchiya

I had my tankless water heater replaced through Cozy Comfort Plus. Brian was very helpful and his technician did his best to ensure the new model would fit the tight nook that the original one was in. The team installed the new heater quickly and ensured the location was clean afterwards. Overall, I was very satisfied with the installation and service.

Maria Leitao

Maury from Cozy Comfort did a fantastic job of examining the functionality of my furnace and cleaning the major components. He tested my furnace to make sure that it would run efficiently in the winter. My humidifier was cleaned, the drip pad replaced and settings properly set up. Thank you Maury for your effective care. thank you Cozy Comfort- you are a company that has proven your worth over the past 25 years that you have looked after my family's heating and cooling needs.

Jeffrey Hoffman

Jeffrey Hoffman

From installation to maintenance, Cozy Comfort Plus Inc. provided us with prompt, quality service. It took under a day to install our Mitsubishi split-type air conditioner in May, 2021. This week, they attended to cleaning our unit’s filters in less than a day’s notice. The technician explained how to remove, clean and reinstall the filters ourselves which will save us money down the road. I highly recommend Cozy Comfort without reservation.