|Efficiency||Up to 85.2% AFUE|
|Warranty||20-Year Limited Warranty on Heat Exchanger; 5-Year Limited Warranty on covered components. This product may be eligible for 10-Year Limited Warranty coverage with product registration.|
Lennox COWB3 Boiler
Oil-Fired Water Boiler.
Efficient, quiet warmth you can count on. The COWB3 offers an efficiency of up to 85.2% AFUE, meaning it can deliver significant energy savings, compared to an older boiler. That means you don’t have to worry about high heating bills, no matter how cold the winter gets.