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6 Frequently-Seen Boiler Problems and Their Solutions

The home’s central heating and hot water systems are dependent on the boiler. However, most people don’t devote much thought to this important component, but they expect it to provide heat on demand. The most common boiler issues typically occur when a heating device has been inactive for a long time. Below are several common boiler issues as well as some information on how a heating repair expert can fix them.

Automatic Shut-Offs

A boiler can shut off automatically for a variety of reasons. Some factors that may cause a boiler to shut off include thermostat troubles, a failed pump, a frozen pipe, or air in the lines. An experienced tech can bleed the boiler’s radiator to remove trapped air, and they can thaw condensate pipes if they freeze in winter.

A Malfunctioning Thermocouple

Another common issue lies in the thermocouple. When this part fails, the boiler’s pilot light can go out by itself. However, a damaged seal can cause the pilot light to be extinguished as well. In either case, the homeowner should call a heating and cooling expert for repairs and advice.

Radiator Issues

Rusted radiator pipes are another common boiler issue. Because of rust buildup, the radiator can no longer heat water properly. A repair tech can determine whether the radiator is functioning correctly; if not, he or she can take steps to resolve the problem.

Dripping and Leaking

A boiler may drip or leak for a variety of reasons. A loose internal connection or a broken part is a common cause of leakage. This boiler problem is one that should only be repaired by a qualified, licensed technician.

Excessive Noise

Boiler noise usually arises from the buildup of air or lime inside the heat exchanger. The homeowner may hear gurgling, rumbling, banging or whistling noises. To solve the problem, a repair tech can power flush or bleed the radiator to remove trapped air and lime.

Pressure Problems

In a pressurized heating system, a boiler may continually lose pressure. This may occur due to a leak or a failed expansion vessel. However, a tech can fix it by re-pressurizing the boiler system.