Reliability and Comfort Every Cold Season Can Be Yours with an Oil-Fired Water Boiler. Carefree Heating and Cooling, LLC in Hamilton knows the winters seem to go on forever, but we can help you stay snug and warm. Our reliable Lennox® oil-fired water boiler is just what you need. This trusty boiler will keep you and your family comfortable and can accommodate an attached tankless coil to provide hot water for your showers, laundry and other household uses for not much additional energy cost. For an efficient home comfort option, look at the COWB3 boiler. COWB3 BoilerThe Beckett® oil burner sets the bar for reliable, fuel-efficient heating. That’s absolutely why it’s used in the COWB3 boiler. Your family can plan on years of almost silent performance from this boiler. 85.2% AFUE* Optional, domestic tankless hot water coil provides hot water for a very small cost throughout the cold season Sealed combustion design keeps noise at a minimum Swing-out burner door for simple cleaning and maintenance Works with traditional radiator systems Cast-iron heat exchanger for lasting reliability 20-year limited warranty on heat exchanger, 1-year limited warranty on remaining covered parts Efficiency Rating (AFUE): up to 85.2 Product Brochure Contact Us to Learn More Our boiler professionals are happy to serve the Hamilton area. If you’re looking for a new boiler or need maintenance on your home’s boiler, call us at 513-275-3601 today, or set up your appointment online. *Annual Fuel Utilization Efficiency (AFUE) measures how efficient the appliance is in converting its fuel’s energy into heat over the course of a year.