Furnace Repair Santa Ana

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Frequently Asked Questions about Furnace Repair

Is your furnace acting up? Get answers to common questions about furnace repair so you can make informed decisions.

Why is my furnace blowing cold air?

Several problems can cause your furnace to blow cold air::
  • Pilot light or ignition problems: If the pilot light is out, the burners won't light, and the furnace won't produce heat. Ignition issues are a common culprit.
  • 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: Seal any ductwork leaks to improve performance. Poorly insulated or leaky ducts can cause a variety of heating issues.
If you're not able to identify the cause and fix the problem yourself, contact a furnace repair professional.

What is an AFUE rating?

AFUE stands for Annual Fuel Utilization Efficiency. AFUE helps consumers compare the efficiency of different furnace models. The AFUE rating is expressed as a percentage. For instance, a furnace with a 95% AFUE rating converts 95% of the fuel's energy into usable heat, while the remaining 5% is lost as exhaust gases.. Higher AFUE ratings mean greater efficiency and lower heating costs. Look for high-efficiency systems for maximum savings.

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. . 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.

What is the difference between a single-stage and two-stage furnace?

Single-stage and two-stage furnaces have operational differences.
Single-stage furnaces operate at only one output level – full capacity. This may cause temperature fluctuations and higher energy bills because the temperature fluctuates more than with two-stage furnaces.
Two-stage furnaces offer two levels of heat output: a lower setting for mild weather and a higher setting for colder temperatures. This allows the furnace to modulate its output based on the actual heating demand, resulting in more consistent temperatures, quieter operation, and improved energy efficiency.Two-stage furnaces provide enhanced home comfort and energy savings compared to single-stage models.

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: A faulty 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, 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 you're not able to identify the cause and fix the problem yourself, contact a furnace repair professional.

What is an AFUE rating?

AFUE stands for Annual Fuel Utilization Efficiency. It is a measure of how effectively a furnace converts fuel to heat. . It's a percentage reflecting how much of the energy in the fuel becomes heat for your space. For instance, a furnace with a 95% AFUE rating converts 95% of the fuel's energy into usable heat, and only 5% is wasted. Always choose a furnace with the highest AFUE rating you can afford. The minimum AFUE rating for new furnaces is 80%, but high-efficiency models can have AFUE ratings of 90% to 98% or more.

What is a heat exchanger in a furnace?

The heat exchanger is a vital component in a furnace. It warms the air blown into 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.. Cracks in the heat exchanger can be very dangerous, causing carbon monoxide to enter your house. Annual maintenance by a professional is highly recommended.

What is the difference between a single-stage and two-stage furnace?

Single-stage and two-stage furnaces have operational differences.
Single-stage furnaces operate at only one output level – full capacity. This can lead to uneven heating and fluctuating bills because the temperature fluctuates more than with two-stage furnaces.
Two-stage furnaces offer two levels of heat output: a lower setting for mild weather and a higher setting for colder temperatures. They work by running at a lower speed most of the time and switching to high speed when necessary.Two-stage furnaces provide enhanced home comfort and energy savings compared to single-stage models.