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With a little do-it-yourself experience, you can troubleshoot and repair your furnace yourself. Your best bet though, is to have a maintenance check list for your heating system to avoid the problem.
- Thermostat Not Set to On. Your thermostat controls the operation of your heating system. …
- Circuit Breaker Flipped. …
- Clogged Air Filter. …
- Access Panel to Furnace Not On Properly. …
- Furnace Not Lubricated Properly. …
- Flame Sensor Needs Cleaned. …
- Heat Exchanger Is Cracked.
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.
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.
Locate the reset button on the furnace and press it to reset the furnace. It is usually located inside the blower compartment on the side of the blower motor. Be cautious as the housing may be hot. If the button is popped up, press it down.
An average furnace repair costs $307, or between $131 and $484. Electric furnaces can run $300 or less to repair. Gas furnace repairs range from $375 to $1,200 due to complexity. Most HVAC repair professionals charge $75 per hour but can range from $50 to $150 per hour.
- Your Carbon Monoxide Detector Keeps Going Off.
- Your House is Not Warm Enough.
- Your Heating Bill Suddenly Goes Up.
- Your Hear Banging or Gurgling Noises.
- Increasing illnesses.
- High furnace age.
- High and unexplained utility bills.
- Sudden troublesome noises.
- Pilot flame color.
- Dry air.
- Soot.
- Frequent repairs.
If it’s cooler, it could be in need of refrigerant or the compressor has gone out. Then, turn your system off at the thermostat. Before you do anything else, try changing the air filter. This will help you figure out whether the issue is simply low airflow due to a clogged filter.
When you turn the furnace on but no heat comes out, there may be an obstruction. Dirty air filters restrict airflow, which can make it feel like not much heated air is coming out of your vents. Check the furnace filter and replace it if its surface is covered with contaminants.
When airflow through your vents are blocked, the burner of your furnace will shut off, while the blowers continue to run as normal. Over a short period, the fan will turn the air cold or lukewarm at best. Air filters keep the air in your home clean and easy to breathe.
- Use a Space Heater. If a power outage wasn’t the cause of your furnace going out, use a space heater to stay warm. …
- Use Your Fireplace. …
- Insulate Against Outside Air. …
- Stay Inside. …
- Dress Warm. …
- Keep Moving. …
- Get Cooking. …
- Slumber Party.
The purpose of the reset button on a furnace is to shut it down before it can trip your circuit breaker. The need for this may arise if the furnace becomes too hot, or if there is some sort of electrical system interruption. To get the furnace working again, you simply press the reset button back down again.
Furnaces don’t really have a lot to do with plumbing, but our heating technicians service them anyway. … We can repair any kind of broken wall, floor, gravity, or forced air furnace, or heat pump. If your furnace is beyond repair, we’ll help pick a replacement and install it, too.
A well-maintained furnace can last at least 15 to 20 years, but completing annual maintenance and being diligent with repairs can extend its life even longer.
For example, a 700- to 1,500-square-foot home will require a BTU rating between 40,000 and 60,000, which will cost between $2,000 and $3,000. A furnace for a home ranging in size from 2,000 and 5,000 square feet will need between 125,000 and 150,000 BTUs and will cost in the neighborhood of $3,300 to $6,500.
Ideally, you don’t want to wait until your furnace dies completely to replace it. This could easily happen in the middle of winter, leaving you without any way to heat your home. Instead, keep a close eye on your furnace’s operation, both in terms of efficiency and cost.
The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. … Then, remove the front panel to find the ignitor or ignition sensor. This is typically located near the burners. If the sensor or ignitor is dirty, it will need to be cleaned.
The most common cause of low air flow through the vents in your home is blocked or dirty AC filters. … Be sure to keep the area around your AC filters clear of furniture and anything else that might block the flow of air, and be sure to clean or change your AC filters once a month.
Furnace Turns on but No Heat If you feel no heat in the minutes after you activate your furnace, something could be wrong with the belt, heating coils or furnace settings. If the blowing mechanisms are inconsistent or non-functioning, there is probably an issue with the blower belt.
Two of the most common reasons your home central heating isn’t working are a dirty flame sensor and a dirty air filter. Clean the flame sensor with a steel wool pad and replace the air filter every 1-2 months. This will help prevent future problems.
Either way, restarting a furnace is a relatively simple task that takes no longer than 10 minutes to complete. Follow these steps to reset your gas furnace: Turn the circuit breaker off and switch the furnace power button off too.
- Step 1: Turn off the power to the furnace. …
- Step 2: Remove the blower compartment cover. …
- Step 3: Make sure the blower is completely cooled off. …
- Step 4: Locate the reset button. …
- Step 5: Press the button in (assuming that this is your issue and that the button has popped).
- Step 1: Fill the Fuel Tank. …
- Step 2: Hit the Reset Button. …
- Step 3: Turn off the Furnace. …
- Step 4: Collect Your Tools. …
- Step 5: Find the Bleeder Valve. …
- Step 6: Attach Nylon Tubing. …
- Step 7: Turn on the Furnace and Unscrew the Valve. …
- Step 8: Tighten the Valve.