Reliability and Comfort Every Cold Season Can Be Yours with an Oil-Fired Water Boiler.

Temptrol Heating & Cooling Inc. in Antioch knows the colder months seem to go on forever, but we can help you stay snug and warm. Our dependable Lennox® oil-fired water boiler can help. This boiler will keep you warm and even has the option of 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 Boiler

The Beckett® oil burner sets the bar for reliable, fuel-efficient heating. That’s absolutely why it’s used in the COWB3 boiler. You 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 winter months
  • Sealed combustion design keeps noise at an unnoticeable level
  • Swing-out burner door for painless cleaning and maintenance
  • Compatible 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
COWB3 Boiler
Efficiency Rating (AFUE): up to 85.2

Our boiler experts are happy to serve the Antioch area. If you’re looking for a new boiler or need maintenance on your existing boiler, call us at 847-838-2156 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.