Furnace Repair Denton

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Frequently Asked Questions about Furnace Repair

Having problems with your heating system? Get answers to common questions about furnace repair and find trusted local technicians.

Why is my furnace blowing cold air?

Several problems can cause your furnace to blow cold air::
  • Pilot light or ignition problems: In older furnaces, the pilot light needs to be lit for the burners to ignite. In newer furnaces, a faulty electronic ignition system can prevent the burners from igniting.
  • Thermostat issues: A faulty thermostat can prevent the furnace from turning on or cause it to cycle improperly. Check that your thermostat is set correctly and is sending a signal to the furnace to turn on.
  • Overheating: If the furnace overheats, a safety switch may shut off the burners, causing the blower to circulate cold air.. This is typically caused by a restricted airflow, often due to a dirty air filter.
  • Ductwork problems: Leaks in your ductwork can allow heated air to escape into unconditioned spaces, reducing the amount of warm air that reaches your rooms.. This can also result in the furnace blowing cold air, especially if the leak is near the beginning of the ductwork run.
If your furnace is blowing cold air, it's important to troubleshoot the problem and, if necessary, call a qualified HVAC technician for repair.

How much does furnace repair cost?

The cost of furnace repair varies depending on several factors, including: the specific problem, the age and model of your furnace, your location, and the HVAC company you choose. It's always recommended to get multiple quotes from different companies to compare prices. Look for companies that offer transparent and upfront pricing.

What causes a furnace to stop working?

There are several reasons why your furnace might stop working, from minor issues to major breakdowns. Some of the most common causes include::
  • Lack of power: Check the circuit breaker to ensure the furnace is receiving power. Make sure the power switch near the furnace is also on.
  • Thermostat problems: A faulty thermostat may not be signaling the furnace to turn on. A malfunctioning thermostat requires replacement.
  • Clogged air filter: A clogged air filter can cause many problems. Try replacing the filter.
  • Ignition problems: Issues with the igniter or pilot light can prevent the furnace from starting. A faulty igniter or pilot light may need to be cleaned or replaced..
  • Blower motor issues: The blower motor circulates air through the furnace and ductwork. A faulty motor can prevent air from circulating properly..
  • Gas supply problems (for gas furnaces): Gas furnaces require both gas and electricity to function properly. Check that there are no gas leaks.
  • Other component failures: Other components, such as the inducer motor, capacitor, or pressure switch, might be responsible.
If you cannot identify or resolve the issue yourself, contact a furnace repair specialist .

What is a heat exchanger in a furnace?

The heat exchanger plays a key role in a furnace. It warms the air blown into your home. It's a safety feature separating exhaust gases. Cracks in the heat exchanger can be very dangerous, causing carbon monoxide to enter your house. Annual maintenance by a professional is highly recommended.

Why is my furnace blowing cold air?

Several problems can cause your furnace to blow cold air::
  • Pilot light or ignition problems: In older furnaces, the pilot light needs to be lit for the burners to ignite. Ignition issues are a common culprit.
  • Thermostat issues: An incorrectly set or malfunctioning thermostat can prevent the furnace from turning on or make it blow cold air. Check your thermostat settings to ensure the system is set to 'heat' and the temperature setting is higher than the current room temperature.
  • Overheating: If the furnace overheats, it could activate a limit switch. This is typically caused by a restricted airflow, often due to a dirty air filter.
  • Ductwork problems: Seal any ductwork leaks to improve performance. Poorly insulated or leaky ducts can cause a variety of heating issues.
If your furnace is blowing cold air, it's important to troubleshoot the problem and, if necessary, call a qualified HVAC technician for repair.

How much does furnace repair cost?

The cost of furnace repair varies depending on several factors, including: the specific problem, the age and model of your furnace, your location, and the HVAC company you choose. HVACCompaniesHub.com helps you connect with qualified furnace repair technicians and receive competitive quotes. Be wary of unusually low quotes, as they may indicate subpar service or hidden fees.

What causes a furnace to stop working?

There are many potential causes of furnace failure, ranging from simple issues to more complex problems. Here are some possible culprits:
  • Lack of power: Check the circuit breaker to ensure the furnace is receiving power. A tripped breaker is a common and easily resolved problem.
  • Thermostat problems: Check that the thermostat is set correctly to 'heat' and at a temperature higher than the current room temperature. Replace batteries if the display is blank or not working. A malfunctioning thermostat requires replacement.
  • Clogged air filter: A clogged air filter can cause many problems. Try replacing the filter.
  • Ignition problems: The igniter or pilot light (in older furnaces) is responsible for lighting the burners. A faulty igniter or pilot light may need to be cleaned or replaced..
  • Blower motor issues: The blower motor is crucial to distributing warm air throughout your home. If the blower motor is broken, the furnace may not produce enough heat.
  • Gas supply problems (for gas furnaces): Make sure the gas supply valve to the furnace is turned on.. Check that there are no gas leaks.
  • Other component failures: Other components, such as the inducer motor, capacitor, or pressure switch, might be responsible.
It is typically best to avoid trying to fix the furnace on your own unless you're a qualified HVAC professional.

What is a heat exchanger in a furnace?

The heat exchanger plays a key role in a furnace. It is responsible for transferring heat from the combustion process to the air that circulates throughout your home. . The heat exchanger also acts as a barrier between the combustion gases and the circulating air, preventing harmful gases, such as carbon monoxide, from leaking into your living space.. Regularly checking and cleaning your heat exchanger and scheduling professional maintenance are crucial for ensuring its proper function, preventing cracks, and maximizing its lifespan.