Many common boiler issues directly result from what happens if you don’t service your boiler with regular care and professional maintenance checkups.
Thermostat Issues
A faulty thermostat may begin as a minor problem, but its effect on the boiler can be significant. A malfunctioning thermostat may cause your boiler to turn on or shut down improperly, causing damage over time. A malfunctioning thermostat can also lead to temperature extremes in your home.
The thermostat checkup is part of a regular maintenance checkup. It is one of the first elements you should have a professional technician check if your boiler isn’t working.
Pilot Lights and Electronic Igniters
Whether your boiler uses gas or oil, you must rely on an electronic igniter or pilot light to fire the main burner. These components provide the spark that powers the flame, and without them, your boiler doesn’t work.
Fixing the pilot light or electronic igniter is easy to do. It may include cleaning carbon debris and dirt from the openings. However, replacing the boiler may be the best choice if that doesn’t work or you continue to experience ignition problems.
Lime Scale and Mineral Deposits
Boilers contain water and water vapor, so deposits of minerals and limescale will build up in various parts of the boiler, including the heat exchanger. If these deposits are not removed regularly, they can build up and restrict the flow of water.
Excessive limescale buildup can lead to a condition called “kettling.” The water inside the boiler reaches boiling and turns to steam, and the steam creates the same whistling and banging sounds you hear when a tea kettle reaches the boiling point. Kettling is a severe issue in a boiler and may result in a dangerous buildup of pressure.
Water Leaks
When talking about your boiler, any water leak could signify a severe problem. Water leaks are prevalent in older boilers. As connections age and the stresses of years of running take their toll, cracks and loose joints can lead to water leaking. The pressure relief valve is another potential source of leaks.
If you have annual checkups and maintenance on your boiler system, the skilled technician will be able to diagnose and repair a leak source before it becomes a severe issue.
Circulator Pump Failure
The circulator pump is a necessary component of the boiler system. It pushes the hot water out of the boiler, delivering it to the baseboard heaters and radiators in your home. The hot water cannot reach these heating units when the circulator pump is not functioning correctly, and you will notice insufficient heating in your home.
Circulator pumps generally last as long as the boiler itself but sometimes, either because of a manufacturing defect or because of poor maintenance, the circulator pump fails. Chronic leaks around the joints and flanges are a common sign that the circulator pump is failing. You may also hear strange noises when the boiler is in operation.