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Serving Chester County & Surrounding Areas


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Signature HVAC Blog

Why Your Heater Is Leaving Cold Spots in the House


A central heating system is supposed to provide warmth throughout a home, reaching to all the rooms connected to the ductwork. Although not all rooms warm up the same way, the heater should at least provide a general even comfort level for everyone in the household.

So … why is your heating system not doing this? Why are you discovering rooms that are colder than they should be? 

Uneven heating like this is a common issue a house may encounter, and it often requires professional heating repair in West Chester, PA to correct it. Below are some reasons for these cold spots appearing in your house.

The heating system is undersized

The first thing we need to know is if the heating system is new. If this is the first winter it is taking care of your family’s comfort needs, one possible cause of the uneven heating is that the heater was installed poorly so it’s not powerful enough to thoroughly heat the house. Undersized heating systems are a common problem when amateurs do the installation. The only way to fix this is to have professionals replace the heater and correctly size a replacement system.

The heater is too old

On the other side of heating age, uneven heating can indicate an older heating system is near the end of its service life. When a heater is more than 15 years old, the chance of it starting to lose its heating capacity increases—no matter how well it was maintained. This loss of heating power will first appear as cold spots in rooms, but you can expect more rooms to begin to “chill out.” Consult with HVAC pros to see if the system can be cost-effectively repaired or if it’s time to send the old heater to the recycling yard.

The thermostat is miscalibrated

Now to a smaller and easily fixed problem: the thermostat isn’t correctly reading the household temperatures and is shutting down the heater before it can run long enough to send heated air to all the rooms. Professionals can recalibrate the thermostat to fix this. If they find the thermostat has larger problems, they may recommend installing a new one. 

The heating system is short-cycling

This is when the heater cuts off its standard heating cycle early, only to then turn back on again a short time later. This puts the heater in a start-stop pattern that wastes energy and puts strain on its components. It also means the heater won’t run long enough for even heat distribution. There are many reasons for a heater to short-cycle, and professionals can find the cause and fix it.

The air filter is clogged

Finally, a simple problem you can correct yourself. Check the air filter for the HVAC system. If it’s extremely clogged, put in a clean one. The clogged filter may have blocked enough airflow into the system to make it harder for it to heat the house. Please keep a regular schedule of filter changes (1 to 3 months) to prevent future problems.

Signature HVAC Provides the Signature Service You Can Trust in Chester County and the Surrounding Areas. Call for Heating Repair Today.

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