Reliability and Comfort Every Cold Season Can Be Yours with an Oil-Fired Water Boiler. Air Houston Mechanical LLC in Humble knows the cold seasons seem to go on forever, but we can help you stay snug and warm. Our sturdy Lennox® oil-fired water boiler is the answer. It will keep your home comfortable and can be equipped with 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 virtually noiseless performance from this boiler. 85.2% AFUE* Optional, domestic tankless hot water coil provides hot water for a very small cost throughout the wintertime Sealed combustion design keeps noise at a minimum Swing-out burner door for painless cleaning and maintenance Functions with traditional radiator systems Cast-iron heat exchanger for lasting durability 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 experts are here to serve the Humble area. If you’re looking for a new boiler or need maintenance on your existing boiler, call us at 832-777-1521 today, or make 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.