6 Signs That It’s Time for Boiler Replacement


The most effective way to prevent the need for boiler replacement is to implement a regular maintenance plan with a local HVAC professional. Regular upkeep is crucial in ensuring the longevity and efficiency of the boiler, and it can help keep a warranty in force. However, if the homeowner has missed a few inspections and they aren’t sure whether it makes sense to repair the unit, they can consider the below signs that it’s time for boiler replacement.

Equipment Age

A boiler can last upwards of 20 years, and age alone isn’t necessarily an indicator of trouble. However, if the boiler is old and it’s exhibiting one or more of the below signs, it may need replacement.

Increased Energy Bills

As a boiler ages, it loses efficiency even if it still seems to work properly. When the unit doesn’t work as efficiently as it once did, the owner may see a sudden increase in energy usage.

Frequent Repairs

Increasing operational costs may not always be a result of higher energy bills. The expense associated with keeping a boiler going may be due to frequent repairs. Increased noise coming from the boiler is another indication that the unit may need replacement.


If there’s black soot around a gas boiler, it may indicate that fuel isn’t burning fully and is creating dangerous carbon monoxide. In the case of a gas furnace, a flame that changes to yellow from blue can show the same problem.


A boiler leak can cause extensive flooding and property damage, and it can ruin the unit itself. If the boiler requires more water or if it has leaks, it’s likely at the end of its lifespan.

Reduced Comfort

If there are rooms in the home that are consistently too hot or too cold despite the rest of the house’s temperature, or if temperatures fluctuate widely during the day, it may be time for a replacement boiler.

If the unit has any of these boiler problems, replacement may be more economically feasible than repair is. A new boiler comes with many benefits, such as increased efficiency, better performance, increased safety and less-frequent repairs.