gwb9-ih
Boiler
High efficiency, gas-fired condensing water boiler
ENERGY STAR® Qualified
Heating Savings
Our Lennox Dealers are here to help
Your Location: Find a DealerFeatures
Smart with energy use
With an efficiency rating of 90% AFUE, the GW9-IH boiler allows you to stay comfortable during even the coldest weather, without worrying about energy costs 90% of fuel is converted into usable heat.
Flexible installation means you have options
The GWB9-IH is designed to integrate easily into a traditional radiator system. Its compact design allows flexible installation inside your home for easy replacement of an older boiler with a higher efficiency model.
Tested and proven for
dependable performance
Tested and proven for
dependable performance
With a corrosion-resistant cast-aluminum heat exchanger, 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 exchangers. So you enjoy rapid warmth when you need it.
Ratings & Reviews
See what other customers are saying about
GWB9-IH Boiler
5/5
5/5
5/5
Get answers from a Lennox® Dealer.
It's easy to find an expert Lennox Dealer who can help you make the most of your HVAC system.
View Now
Resources
Product Literature
Glossary of terms
-
- Annualized Fuel Utilization Efficiency (AFUE)
- A measure of furnace heating efficiency. The higher the AFUE, the more efficient the furnace.
Learn More -
- Energy Star®
- ENERGY STAR® is a program of the U.S. Environmental Protection Agency (EPA) designed to help consumers and businesses save money by choosing energy-efficient products and technologies. Heating, ventilation and air-conditioning (HVAC) equipment with the ENERGY STAR® label meets or exceeds federal guidelines for energy-efficient performance.
Learn More -
- Heat Exchanger
- A heat exchanger is a heating component that is located in the furnace and transfers heat to the surrounding air, which is then pumped throughout the home.
Learn More
Proper sizing and installation of equipment is critical to achieve optimal performance. Split system air conditioners and heat pumps (excluding ductless systems) must be matched with appropriate coil components to meet ENERGY STAR criteria. Ask your contractor for details or visit www.energystar.gov.
