The long, cold months of winter are demanding on all types of heating systems.
While boilers tend to be especially reliable, they are not immune to problems.
It’s best to call for professional service at the first indication of a problem. Acting fast helps to prevent further damage, more expensive repairs and potential replacement of the system. A common sign that there’s something wrong with a hydronic heater is excess water surrounding the boiler tank or the connecting pipe. Over time, boilers can accumulate ruse and components wear out. Aging seals, a faulty pressure valve, loose fittings or corroded pipes can lead to leaking or dripping. Another warning sign is odd operational noises. When the boiler sounds a lot like a tea kettle reaching a boil, it’s called “kettling.” Rumbling sounds are also cause for concern. They typically mean that the heat exchanger has developed a deposit build-up. Kettling is usually the result of hard water but can happen to any boiler at any time. Deposit accumulation on the heat exchanger forces the boiler to work harder, which shortens its lifespan and results in higher running costs. In especially cold areas, condensing boilers can have difficulties due to the condensate pipe freezing. The water freezes and creates a blockage. This issue is easily solved by applying hot water to the pipe. Older boilers often experience troubles with the pilot light. This blue flame, located underneath the unit, is necessary to operate. When the pilot light shuts off, it is probably the thermocouple. It’s sometimes possible to just reignite the flame. However, the boiler might not be receiving any gas.