Furnace Issues – What’s Wrong with my Furnace?

furnace issues
Whether you have a gas furnace or an electric furnace you’ll probably come across similar problems that necessitate furnace repairs. The most common issues we see include:

  • No heat or not enough heat: There may be an issue with clogged filters, the thermostat, the power or the pilot light.
  • Going on or off too frequently: If your furnace is cycling between on and off settings, you could have a clogged filter, improper airflow or a bad thermostat.
  • Blower doesn’t turn off: This could be caused by a thermostat setting or a faulty switch.
  • Strange noises: If you hear rumbling, rattling or squeaking coming from your furnace, there could be a mechanical problem, airflow reduction or clogged burners.
  • Out pilot light: Pilot lights can go out due to strong drafts or a faulty thermocouple, in which case you may need to do more than relight the pilot light.

NOTE: Furnaces burn natural gas, and use electricity; both of these present hazards. As always, be sure the power is shut off to your unit before you do any work on it. Also, never assume anything. If you are not sure about what you are doing or have any concerns do not guess. You could make the problem worse and ultimately more costly to repair. When in doubt, call a professional!

How to fix simple furnace problems

There are some furnace problems that you can address without needing to call a service technician. Check for those very common furnace problem, and if they are not the cause for your furnace malfunctioning then you should schedule a service call.

  1. Clean or Replace Furnace Air Filter
    If your furnace is no longer performing efficiently then this may be caused by a dirty furnace filter. Air filters trap dust, dirt, and debris – a clogged air filter can restrict or even block the air flow and cause the heat exchanger to overheat. In some cases it may damage the limit switch which controls the fan of the furnace. Furnace filters should be checked every month and need to be exchanged every one to three months or as outlined in your owner’s manual. Consult your owner’s manual or a heating expert if you are unsure about the required size of furnace filter or how to exchange it.
  2. Troubleshoot Thermostat Issues
    Some thermostats are wired to the house’s electrical system while others run on batteries. If your home’s thermostat unit runs on batteries, you should change them once a year, or as needed. Your thermostat acts as the control center of your furnace and tells your furnace when it needs to come on and go off again. Verify that the temperature setting of the thermostat is set to “heat” (not “cool”, “off”, or “air”), and review your temperature settings. To check if the thermostat is sending the correct message to the furnace you can set the temperature of the thermostat 5 degrees above your current room temperature and see if the heat comes on.
  3. Check Furnace Switch and Breakers
    Check that nobody has accidentally turned off the furnace switch located near the furnace.
    If the furnace switch is fine then head to the electrical panel and look for your HVAC breaker switch. Make sure the HVAC breaker is on. If you need to reset it flip the switch all the way off and then flip it back on again.
  4. Ensure Vents are Unobstructed
    Walk through your home and inspect the supply and return grills in every room. All of those should be fully open and unobstructed to ensure proper airflow. Make sure there are no furniture, carpets, boxes or laundry blocking the outlets.

Furnace Problems that you’ll need assistance fixing

  • Ignition Problems
    If the furnace isn’t kicking on and you’ve checked the thermostat, there is a good chance the problem is somewhere in the ignition system. Safety switches can break, computer boards can fail, or other malfunctioning parts of the furnace can keep the ignition system from working. Figuring out exactly where and how to fix it is something our trained heating repair technicians are very good at.
  • Burner Issues
    Sometimes the ignition system will work fine, but the burner won’t lite. Figuring out that the burner is dirty or needs adjustment requires looking inside the furnace. There are safety concerns when making adjustments and repairs to gas appliances, as you do not want to accidentally cause a gas leak or carbon monoxide in your home.
  • Belt or Blower Problems
    If your furnace is making a high pitched sound, it is likely the blower belt or the blower itself. The best way to resolve this problem is to have a qualified heating repair technician inspect and diagnose your system. Sometimes fixing this problem can be as simple as lubricating it. The belt could also be worn. Sometimes, the problem is with the blower motor or another mechanical part which will either need repair or replacement.
  • General Mechanical Issues
    Mechanical wear and tear can affect the performance of your furnace. We strongly recommend letting professionals handle problems that are related to wear and tear. Otherwise, you may void the warranty of your furnace or you may cause bigger problems that may require more expensive repairs.

Any furnace, regardless of its age, may pose electricity- or gas-related safety hazards. It’s always a good idea to have an expert examine the unit and suggest the best course of action.

Your licensed professionals from PEACE OF MIND PLUMBING will be happy to inspect your furnace and find out what’s causing the problems with your heating system. We provide upfront fixed priced quotes for repairs and conduct repairs in a professional and timely manner.

Having furnace troubles? We’re here to help.

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