5 Common Furnace Issues

San Rafael

(415) 942-6565

Santa Rosa

(707) 452-3464

5 Common Furnace Issues We See Frequently

When temperatures plummet, your furnace plays an important role in keeping your home warm and cozy. Like other household appliances, furnaces can develop problems over time. A malfunctioning furnace is one of the most common causes of high energy bills. A bad furnace poses a safety hazard and can leak carbon monoxide or start a house fire.

Here are some common furnace problems.

1. Your Furnace Is Making Weird/Unusual Noises

Most furnaces make some noises when operating. A furnace, for example, makes a whooshing noise as the air travels through it and clicks when the thermostat reaches a certain temperature and sends a signal to the furnace to perform a particular activity.

These noises are normal. If you are hearing them, you do not have anything to worry about, however, weird noises may indicate a serious issue.

If you hear a knocking, whistling or screeching noise, there may be something amiss.

  • A knocking noise could mean that a part has become loose or air has entered a part.
  • A whistling noise generally occurs when the air inside the furnace tries to get around the filters, whereas a screeching noise usually indicates misaligned or damaged belts.

2. Your Furnace Is Short Cycling

Does your furnace turn on and off frequently? This is known as “short cycling” and indicates you’ve got a problem:

  • Your filters might have become clogged or your electrical system might have developed a problem.

Other possible causes of short cycling include

  • Faulty flame sensors
  • Overheating
  • Or a faulty thermostat.

These are all serious issues that deserve your immediate attention.

3. Your Furnace Is Not Heating Properly

If your furnace is not producing enough heat, a filter might have become clogged. Heating problems could also be caused by a faulty fan or fan belt and an unclean or damaged igniter/flame sensor/draft inducer.

A furnace will not produce heat if the thermostat is not turned on to or set to heat. Make sure you haven’t turned your thermostat too low.

Do not ignore the problem or you might end up with a costly repair. Have a technician inspect your furnace immediately.

4. Your Furnace Burns up Fuel Quickly

If your furnace is burning up fuel too quickly it is working harder than usual. This can be caused by a faulty component. There could be a clog in the system or the oil pressure pump might be developing too much pressure.

5. Your Furnace Has A Cracked Heat Exchanger

Your heat exchanger plays an important role in keeping your furnace running safely. If you fail to keep up with regular maintenance, your heat exchanger can get damaged. A cracked heat exchanger is expensive to fix. Some signs of a cracked heat exchanger are soot build-up, weird noises, and strange smells.

If You’ve Got A Faulty Furnace In Sonoma County or Marin County, Call John Owens Services, Inc!

John Owens Services offers top-notch furnace replacement service in Sonoma County & Marin County. We are also your go-to team for furnace repair and maintenance. We are committed to helping homeowners make informed decisions. To make an appointment, call 707-452-3464, or fill out a contact form

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Serving Marin & Sonoma Counties

Good plumbing, heating, and air conditioning systems are vital in every North California home. John Owens Services, Inc. is proud to be the expert plumbing company you can count on

The John Owens Way

Our philosophy is simple, we always want to maintain equipment to give it the longest life possible. Next, we want to focus on repairing when something goes wrong. Then only as the last choice, we replace equipment when needed. That’s the John Owens Way.

San Rafael
(415) 942-6565
Santa Rosa
(707) 452-3464



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San Rafael
(415) 942-6565
Santa Rosa
(707) 452-3464