Reliability and Comfort Every Cold Season Can Be Yours with an Oil-Fired Water Boiler. ACS Inc in Metro Atlanta knows the winters seem to be endless, but we can help you stay comfy 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 needs for a low 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 exactly why it’s used in the COWB3 boiler. You and 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 very little cost throughout the cold season Sealed combustion design keeps noise at an unnoticeable level Swing-out burner door for easy cleaning and maintenance Functions 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 pros are happy to serve the Metro Atlanta area. If you’re looking for a new boiler or need maintenance on your current boiler, call us at 770-939-7500 today, or schedule 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.