Often, the issue is that
the heating system is simply dirty
. If your furnace has a dirty blower, the blower could cause equipment failure. … In short, a dirty blower can cause the heat exchanger to fail. Dirty air filters could also be the reason your heater stopped working.
Why is my heater not working in my house?
Dirty filters
are the most common cause of furnace problems. Dust and dirt restrict airflow—and if the filter gets too clogged, the heat exchanger will overheat and shut off too quickly, and your house won't warm up. If the blower is running but no heat is coming out, replace the filter.
What do I do if my heater isn't working?
- Check that your thermostat is set to “heat.” …
- Change the filter. …
- Make sure the gas is on. …
- Clear the chimney exhaust flue. …
- Clean away leaves and debris from exhaust vents. …
- Flush out the drain lines. …
- Check for blocked ducts restricting airflow.
How do I reset my heater?
- First, turn off the power supply to the furnace by turning off the breaker in the circuit box.
- Locate the reset button on the furnace and press it to reset the furnace. …
- If the button is popped up, press it down.
- Return the cover to the blower compartment and turn the power on.
What do I do if my heater is blowing cold air?
When your furnace blows cold air,
try turning the heating unit off and on
. If the air feels warm for a moment or two, then switches to cold, it may be that the flame sensor is dirty. With a dirty flame sensor, your gas burner won't stay lit, causing the air to go cold soon after the furnace turns on.
How do I know if my heater is working?
- Check the Furnace Power Switch. Some furnaces have an on/off switch that is frustratingly easy to switch off by mistake. …
- Look at Your Fuse Box That Powers Your Heater. …
- Check the Batteries in Your Thermostat. …
- Replace the Air Filters. …
- Notice Any Odors. …
- Heater Isn't Working?
The Reset button is usually located
on the back of your device
but can be found on the bottom in some cases.
Why did my heater stop blowing hot air?
First, check
to make sure the thermostat is set correctly
. You will want to make sure that the fan control is set to auto, and not ‘on'. If the thermostat appears set correctly, turn off your heater at the thermostat and check the filter. If the filter is dirty, replace it.
Why is cold air coming out when the heat is on?
Your furnace may be blowing cold air
because the filter is too dirty
. A dirty air filter blocks airflow over the furnace's heat exchanger, causing it to overheat. When overheating, your furnace can trip a high limit switch, causing the furnace burners to shut off so that the heat exchanger does not crack.
Why does my heat feel like cold air?
There are a few reasons your heat pump could be blowing cold air. …
Turn off the heat at the thermostat and check your air filter
. If it's dirty, change it! Make sure the thermostat is set to “AUTO”, not “ON”.
Why is cold air coming out of my vents when the heat is on?
Your Air Filter Is
Dirty
Clogged air filters could be causing cold air to blow out of your vents. A dirty air filter can block airflow over your furnace's heat exchanger, which can cause it to overheat.
How do I fix an unresponsive thermostat?
If the thermostat is still unresponsive, make sure
the breaker is shut off and remove the cover
. If it looks dirty inside, use canned air or a soft artist brush to clean away accumulated grime that may be affecting its functionality. Then look for issues like loose wiring or terminal screws and tighten them up.
Who do you call to fix a thermostat?
If your wires are connected but your thermostat still isn't working properly, that means it's time to hire a professional. They'll open the thermostat and test the wires individually to see which one is faulty. Since messing with wires is dangerous, you'll want to contact
a certified HVAC technician
.
How do you know a thermostat is bad?
- Your HVAC Keeps Turning On or Off. …
- Faulty Thermostat Readings. …
- Suspiciously High Energy Bills. …
- Constant Temperature Shifts. …
- Thermostat Is Too Old. …
- Thermostat Fails to Respond to Changed Settings. …
- Your HVAC System Short Cycles.
On personal computers, the reset button clears the memory and reboots the machine forcibly. Reset buttons are
found on circuit breakers to reset the circuit
. This button can cause data corruption which is why it often doesn't exist on many machines.
