Lennox G40 Gas Furnace
Merit® Series Reliable, Mid-Efficiency Gas Furnace
Energy Efficiency
- Efficiency rating of 80% AFUE—can save you hundreds of dollars each year, compared to standard furnaces
- Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs
Reliable Performance
- Duralok Plus™ heat exchanger—made of high-quality, patented ArmourTuf aluminized steel
- Hot surface igniter—controls furnace operation to ensure reliable, efficient performance
- 20-Year Limited Warranty on heat exchanger
- 5-Year Limited Warranty on covered components
- This product may be eligible for valuable 10-Year Limited Extended Warranty coverage.
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