Goettl Technician replacing duct filter

Why Does My Furnace Keep Shutting Down?

Running your heater in Arizona is not going to be a daily occurrence, at least not for much of the year. That being said, if you think that you can squeak by without a great heater installed in your home, you really need to think again. The professional heating technicians on our team are here to tell you that, when temperatures do drop, it doesn’t matter how long they drop for. You deserve to be comfortable in your home at all times. That simply won’t be the case if your furnace is malfunctioning.

One common issue that homeowners run into with their furnaces is short cycling. This is the event in which a heater starts up, but runs only briefly before cycling back down. It may not seem like the biggest problem in the world, especially if the system is still heating your home effectively despite the erratic behavior. However, short cycling can have a number of negative consequences for your furnace, and may result in the need for serious furnace repairs in Tucson if it is not addressed in a timely fashion.

What Causes Short Cycling to Occur?

As is the case with so many heating problems, there are a number of issues that could be behind your system’s short cycling. The good news is that not all of them are terribly serious. However, it is still important that the situation is resolved promptly, so that further damage is not done.

If your system is short cycling, one of the first things to check is the air filter. If your air filter is very dirty, it is going to create more airflow resistance than it should. That can lead to the system overheating as it tries to force air through that clogged air filter. As a result, it may cycle down in order to protect itself from damage.

You could also have a malfunctioning component in the system, particularly the thermocouple (also known as the flame sensor). The function of the thermocouple is to stem the flow of gas to the system if safe combustion temperatures are not sensed. If your thermocouple is not registering the temperature accurately,  it may be shutting down the system unnecessarily. Of course, you could also have unsafe combustion temperatures, which is a whole other problem!

Another potential cause of your short cycling furnace is a malfunctioning thermostat. If the thermostat is registering temperatures in the house inaccurately, then it may be signaling for the system to shut down before comfortable temperatures are really reached.  Replacing a thermostat is not a major service, but it is one that you need to hire a professional in order to have completed properly.

When the time comes to repair a short cycling furnace, or to resolve any other issues that you may be having with your heater, give Goettl Air Conditioning Tucson a call. We have the skill and experience necessary to guarantee a job well done. With our help, you’ll be able to live in the comfort that we know you deserve. 

G-O-E-T-T-L it’ll keep you cool, but it’s hard to spell.


What Our Customers Say About Us

Gonzalo CastilloGonzalo Castillo
17:20 13 Jul 24
Peter is very experienced and professional. He knows a lot and explains everything in detail.
John McCarreyJohn McCarrey
13:56 13 Jul 24
Excellent service!
Gary StapletonGary Stapleton
02:37 13 Jul 24
I called Goettl to get a second opinion on a/c repair options or replacement. Peter Medelez conducted a very thorough system check and confirmed all the same issues previously identified but found an additional issue; tipping the scale to full replacement. We appreciated his professionalism and knowledge: answering all our questions and explaining the issues and options. We ultimately chose Goettl for the replacement option due to their price and professionalism.
James KroppJames Kropp
17:19 09 Jul 24
It was great
Robert WilliamsRobert Williams
17:06 09 Jul 24
Peter was great! Explained every detail I needed and answered all my questions!
Gustavo EscobarGustavo Escobar
16:57 09 Jul 24
Jesus Gloria provided exceptional service as the Goettl Technician this past weekend. He demonstrated great attention to detail in addressing the issues with our air conditioning unit and resolved them quickly, within 30 minutes. Jesus has a strong dedication to his profession and the company he represents, as evidenced by his professional demeanor and the quality of his work. His customer service skills are top-notch, earning a 5-star rating from us. We were so impressed by his service that we have decided to become members of the Goettl service.
Jesse Vann, JrJesse Vann, Jr
15:19 09 Jul 24
Jehad and Cameron provided great recommendation and customer service for my AC replacement.
Reda MoxleyReda Moxley
15:08 09 Jul 24
17:04 01 Jul 24
Got exactly what we needed with the service and had great customer service from Tyler for our plumbing and with Jehad for our AC work. They were awesome! Thanks!
Donna OwensDonna Owens
15:51 01 Jul 24
Rudy came out and was very professional and addressed our plumbing needs in a timely manner, highly recommended.
Neuro NerdNeuro Nerd
15:06 01 Jul 24
William and Cameron were knowledgeable, friendly, professional, respectful and put on plastic booties over their shoes when they came into the house. Our pets were comfortable with them and that says a lot. We will definitely ask for them again in the future if our AC has any issues.
Karen PardoKaren Pardo
14:55 01 Jul 24
Jehad did an amazing job after checking the entire unit he came down and thoroughly explained everything that needed to get done/replace.
Kelly MoserKelly Moser
17:01 27 Jun 24
Matthew was on time respectful and very curious. He explained everything I needed to know and I felt no pressure to buy additional things. Thank you Matt .
Dusengimana ErnestDusengimana Ernest
15:49 27 Jun 24
Jesus gloria did great. Wonderful
Nick LoprzNick Loprz
14:39 27 Jun 24
Charles JeterCharles Jeter
22:12 26 Jun 24
Kimberly FordKimberly Ford
21:34 26 Jun 24
EXCELLENT CUSTOMER SERVICE!! Jesus Gloria provided AC maintenance today providing with photos and video of his findings and a thorough explanation of any issues found. Richard Wenzlaff and Junior also came out today for the plumbing maintenance and also provided EXCELLENT CUSTOMER SERVICE. I have very clean water. They checked out my water heaters, water softener, osmosis, etc…no issues were noted! Three AWESOME, hard-working, thorough gentleman! Professional and courteous! Thanks guys! Appreciate your hard work and honesty!
Music by JuanMusic by Juan
17:47 19 Jun 24
Supreme service.
Erica RussellErica Russell
17:16 19 Jun 24
Awesome experience. Jesus Gloria was very friendly and informative and solved the problem quickly.
16:06 19 Jun 24
Josh was amazing! He was personable, polite, professional, and he walked me through everything he was doing and looking at. If I could give him ten stars I would!