We sell and service all brands of heating and cooling equipment.Our service technicians are highly trained and are receiving advanced training constantly. A typical cleaning is not typical with our technicians.We almost take apart the entire boiler or furnace to make sure the heat exchanger is 100% clean. If it is not you will get a cool spot. A cool spot surrounded by a hot heat exchanger will cause the metal heat exchanger to crack much sooner than expected. It is the little things that count so you can count on Rivercliff Fuel Inc.to find them and solve them. WE Guarrantee It !!!!!!!!!!!!!!