When the thermometer drops in Washington, PA, nothing is more frustrating than a heating system that refuses to cooperate. Whether you rely on a furnace, boiler, or heat pump, heating issues don’t wait for a convenient time to strike. They often happen right when you need reliable warmth the most. While complex repairs should always be left to certified professionals, knowing how to quickly troubleshoot common heating problems can save you stress, time, and potentially the cost of an unnecessary service call.
At Shearer Heating, A/C & Refrigeration, we believe in empowering our customers, so here is a guide to some of the most frequent issues we see and what you can check before calling us at (724) 932-6862.
Simple Checks Before Calling for Professional Help
Often, the simplest solution is overlooked. Before assuming a major system failure, take a moment to review these basic—yet critical—components of your heating system and surrounding environment. This quick assessment can solve the problem instantly or at least provide valuable information for our technicians.
The Thermostat: The Brain of Your System
The thermostat is the most common culprit behind heating problems that aren't actually problems. It’s easy for settings to be accidentally changed, especially with modern smart thermostats.
Check the Setting: Is the thermostat set to HEAT? It sounds simple, but switching the mode from "Cool" or "Fan Only" is a quick fix.
Check the Temperature: Is the set temperature higher than the current room temperature? If it's set too low, the system won't activate.
Check the Power/Batteries: If your thermostat display is blank, try replacing the batteries. If it's wired, check your circuit breaker to ensure the power isn't tripped.
Power and Switches: The Forgotten Toggles
Your heating system needs a continuous supply of power, and two common switches can interrupt it without your knowledge.
The Breaker Box: Go to your home’s main electrical panel and check the breaker labeled for your furnace, boiler, or HVAC system. Sometimes, a temporary electrical surge can trip the breaker, shutting down the unit. Simply flip it all the way off and then on again.
The Service Switch: Most furnaces have a standard wall switch located on or near the unit that looks like a regular light switch. This switch controls the power to the unit for service purposes. Ensure it is firmly flipped ON. It is often accidentally turned off by people walking past or cleaning.
Air Filter and Vents: The Airflow Blockers
Poor airflow is a leading cause of inefficiency and can even trigger safety shutdowns.
Inspect the Air Filter: A clogged, dirty air filter is the number one cause of poor performance. A thick layer of dust restricts airflow, forcing the system to work harder and potentially causing the unit to overheat and shut down. Replace the filter if it looks dirty.
Check the Vents: Are all the supply and return vents in your rooms open and unobstructed? Blocked vents, especially in critical rooms, can disrupt the entire system's balance.
When to Call the Professionals at Shearer Heating, A/C & Refrigeration
If you’ve gone through the steps above and your heating system is still not working, or if you notice any of the following serious symptoms, it’s time to call the experts. Never attempt complex mechanical or electrical repairs yourself.
Pilot Light Failure: The pilot light won't stay lit or you hear strange noises trying to reignite the burner.
Strange Noises: Loud grinding, screeching, or banging sounds often indicate a serious mechanical failure, such as a damaged blower motor or belt.
Burning Smells: While a slight burning dust smell when first starting the heater is normal, a constant or strong burning smell, especially like plastic or electrical wiring, requires immediate shutdown and a professional visit.
No Heat Despite Airflow: The fan is running, but the air coming out of the vents is cold. This points to a problem with the burner, heat exchanger, or heat pump's reversing valve.
The experienced technicians at Shearer Heating, A/C & Refrigeration are here to handle all the complex troubleshooting and repairs that go beyond the basic checks. We provide reliable, lasting solutions to restore comfort to your home quickly and efficiently. Don’t hesitate to contact us at (724) 932-6862 for expert service you can trust.