A residential boiler is a sturdy, reliable unit that typically lasts at least 15 years with proper system maintenance. This doesn’t mean, however, that a boiler will never present any issues over that long time span. Some boiler problems are minor events that can be resolved with a simple adjustment or component replacement. Others may be the result of substantial failures that will require replacement of the boiler, particularly if the unit has already exceeded 2/3 of its expected service life.
Here are some examples of common problems boilers may exhibit:
No heat at radiators
If the radiators feel warm at the bottom and cool at the top, it’s likely that air has entered the system at some point. Bleeding all radiators may resolve the issue. However, if symptoms recur, it will be necessary to find out where and why air is getting into the boiler or pipes. This requires the expertise of a professional HVAC contractor.
Boiler shuts down
Any of several functions may trigger an automatic shutdown. These include low water pressure, a frozen pipe, excessive air in the system or a malfunctioning circulation pump. A qualified technician can troubleshoot the system and determine the precise cause.
Pilot light doesn’t stay lit
Typically this is the result of a faulty thermocouple. This component senses the presence of the pilot flame and cuts off the gas if the flame goes out. A defective thermocouple may shut off the gas without reason. It’s a straightforward, affordable replacement when performed by an experienced HVAC field tech.
Noisy boiler
Banging, rumbling or whistling sounds are usually caused by an accumulation of mineral deposits known as scale inside boiler components. Professional boiler cleaning using specialized products formulated to dissolve lime scale can usually reduce or eliminate the noise.
Leaking boiler
This may range from simple plumbing issues to a defect in the boiler vessel itself. In the worst case scenario, a leaky boiler may simply have exceeded its usable service life and may need to be replaced.
For qualified professional repair of boiler problems, in Dayton contact Ace Hardware Home Services.
Our goal is to help educate our customers in Dayton, Ohio about energy and home comfort issues (specific to HVAC systems).
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