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Troubleshooting Common Heating Problems

A furnace that won’t fire up is a nightmare no one wants to deal with, especially on the most frigid winter days. While ACE Air Conditioning & Heating Service, Inc. does offer 24/7 emergency service, we recommend you try the following troubleshooting fixes to see if your heating problem can be solved without our help first.

My heating system won’t turn on

If your heating system will not turn on, it could be due to a number of issues, but the culprit is likely a power or fuel issue.

· Thermostat issues: Tons of unnecessary service calls can be avoided each heating season if homeowners checked their thermostats first! If your heating system isn’t turning on, make sure your thermostat is set to heat mode, and that the temperature is set a few degrees below the current indoor temperature. If your thermostat is battery powered, make sure dead batteries aren’t to blame.

· Electrical panel issues: A flipped breaker or blown fuse could cut power to your thermostat or to your heating system, causing it not to turn on. Reset breakers or replace blown fuses to see if your heating issues can be resolved.

· Fuel issues: If you have a gas-powered furnace, make sure your fuel lines have not been compromised. Look for the fuel valve on the lines running to your furnace; make sure it hasn’t mistakenly switched off. If other gas-powered appliances in your home are not receiving fuel, there could be an issue with the main fuel lines powering your home.

My system isn’t producing enough heat

Experiencing a lack of heating indoors can be caused by a number of easy-to-solve issues.

· Blocked air flow: If air flow throughout your home has been restricted, you will likely not feel adequate heating indoors. Make sure you are using a clean air filter, and that all vents and registers throughout your home haven’t been blocked by furniture, carpets, and other items.

· Air leaks: If you aren’t feeling enough heat inside, it could be because your heating is escaping before ever reaching your living areas! Duct leaks can cause up to a 30 percent loss of heating energy. Sealing duct leaks and replacing broken duct sections can improve heating efficiency and keep you warmer inside.

My blower fan runs all the time

A constantly running blower fan can create unwanted operating noise and increase energy use. Many times, thermostat settings are to blame.

· Check to see that the fan switch located on your thermostat is set on “off” or “auto”. If it has been set to “on”, the blower fan will constantly operate.

· At your thermostat, adjust the temperature to a couple of degrees higher than the present room temperature. This should trigger the heating system to shut off, in turn shutting off the blower fan.

ACE Air Conditioning & Heating Service, Inc. is available anytime you need us to provide reliable and quick heating system repair. Contact us today at 703-691-0095 to solve these common heating problems and other system issues.


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  • Jessie Holloway
    November 4, 2022, 2:42 pm REPLY

    Thanks so much for the tips on troubleshooting heating problems. My partner and I want to get our furnace checked out before it gets too cold for the winter. we’ve been looking into calling down an HVAC professional to come to inspect and make any repairs necessary.

  • Elina Brooks
    December 16, 2022, 4:05 am REPLY

    We’ve been using the heater at home often these days since it’s been quite cold, but I recently noticed how our system hasn’t been producing as much heat as it used to. I appreciate that you informed us that this could be due to airflow restriction caused by dirty air filters, or air leaks letting heat escape. I’ll take note of this and contact an HVAC contractor for repairs right away.


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