Furnace Repair Oxnard

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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.

What is an AFUE rating?

AFUE stands for Annual Fuel Utilization Efficiency. AFUE helps consumers compare the efficiency of different furnace models. 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 the difference between a single-stage and two-stage furnace?

Single-stage and two-stage furnaces have operational differences.
Single-stage furnaces have only one setting, they either operate at 100% or are off. This may cause temperature fluctuations and higher energy bills because the temperature fluctuates more than with two-stage furnaces.
Two-stage furnaces can run at both low and high speed. 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.

How can I tell if my furnace is the correct size for my home?

A properly sized furnace is crucial for optimal home comfort. An too-small furnace will constantly run and struggle to heat your home effectively, especially in cold weather.. An too-large furnace will cycle on and off too frequently, wasting energy and shortening the system's lifespan.. Here are some signs your furnace may be improperly sized:
  • High Energy Bills: An incorrectly sized furnace can cause increased energy consumption.
  • Inconsistent Temperatures: Noticeable temperature differences between rooms.
  • Short Cycling: If your furnace turns on and off frequently, it may not be heating your space efficiently and wasting energy.
  • Poor Air Quality: If the airflow from the vents seems weak or there are areas with inconsistent temperatures, the unit may be the wrong size.
  • Excessive Noise: A furnace that's too large may produce more noise than normal.
If you suspect your furnace is improperly sized, it's essential to consult with an HVAC professional. A Manual J load calculation can accurately determine the appropriate furnace size.. A proper sizing calculation is a worthwhile investment for optimal comfort and energy efficiency.

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. 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 make it blow cold air. Check your thermostat settings 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.. Overheating can also damage your furnace, so it's best to have a professional inspect the system.
  • 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. 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, while the remaining 5% is lost as exhaust gases.. 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 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 uneven heating and fluctuating bills because the furnace is either running at its maximum setting or completely off..
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. A two-stage furnace may be a more expensive initial investment, but it can provide greater comfort and savings over time.

How can I tell if my furnace is the correct size for my home?

A correctly sized furnace is essential for efficient and comfortable heating. An undersized furnace won't adequately heat the space. An oversized furnace will short cycle, causing wear and tear, inconsistent heating, and inflated utility bills. Signs that your furnace may not be correctly sized include::
  • High Energy Bills: An oversized furnace can cause increased energy consumption.
  • Inconsistent Temperatures: Noticeable temperature differences between rooms.
  • Short Cycling: If your furnace cycles frequently, it could be an indication and wasting energy.
  • Poor Air Quality: If the airflow from the vents seems weak or there are areas with inconsistent temperatures, the unit may be the wrong size.
  • Excessive Noise: A furnace that's too large may produce more noise than normal.
A qualified technician will be able to assess your home's heating needs. A Manual J load calculation can accurately determine the appropriate furnace size.. Installing the correct size unit will maximize efficiency and minimize energy bills.

Why is my furnace blowing cold air?

Possible reasons for cold air include:
  • 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: An incorrectly set or malfunctioning thermostat can prevent the furnace from turning on or make it cycle improperly. Check that your thermostat 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.. Overheating can also damage your furnace, so it's best to have a professional inspect the system.
  • 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.