Boiler and Burner Maintenance

Optimum Boiler Efficiency, Fuel Saving & Cost Reduction


Modern HVAC systems quite often make use of a steam or hot water boiler for their source of heat. Because the boilers use fossil fuels, water and electricity, they are often times the most costly portion of the HVAC system and can have the most costly repairs and maintenance.

A general knowledge of the operation of a boiler's burner can help you understand where costs can be reduced.

Most industrial boilers have a burner that mixes air with a fossil fuel creating a fire that is sent into a combustion chamber and then through the remainder of the boiler's passes. As the fire travels through the boiler, the heat from the fire passes through the metal walls of the boiler into the water. The easier it is for the heat to travel into the water, the more efficient and less expensive the operation of your HVAC unit will be. Also, when the optimum adjustment of air to fuel ratio of each burner is achieved, it will allow you to save both energy and money.

As the burner operates, our technicians measure combustion efficiency in percent to determine the best possible air-to-fuel adjustment. If not enough air is present, carbon monoxide, a poisonous gas, may be produced. If the air is adjusted too great, then the heat itself can be blown out of the boiler before it has a chance to get into the water. Smoke is also produced during combustion and smoke produces soot. One-eighth inch of soot buildup on the metal fireside walls of the boiler is equal to a 10 percent increase in fuel consumption! Our technicians recognize that an indication of soot buildup means an increase in stack temperature.

Our technicians will clean the soot from the boiler walls and adjust the burner as part of the yearly industrial boiler maintenance agreement to ensure optimum boiler efficiency and fuel savings, in consideration of your boiler's age and manufacturer.

The boiler has a relief valve and low water cut-offs that provide an additional level of safety in the event problems occur with the water side of the boiler. Both the relief and low water cut-offs require maintenance to ensure that they will operate at the optimum level.

New England Mechanical Services offers boiler maintenance programs that will provide fuel consumption savings, including:

  • yearly cleaning and electronic combustion efficiency test and adjustment
  • mid-season combustion retest and adjustment

For additional information on boiler and burner maintenance, contact Rob Krawic, V.P. & G.M., New London, CT at 860.442.1855.