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Why Aren’t the Burners Lighting in My Gas Furnace?

Your gas furnace contains a few key components that must all work together in order to keep your home warm and cozy. Furnaces burn fuel—either natural gas or propane—in order to create heat. Heat generates in a combustion chamber, but this process also produces by-products like water vapor and carbon monoxide which must then vent through a flue or vent pipe. Hot gasses travel through the heat exchanger, and as a blower fan pushes air over the heat exchanger, the air warms up before it moves through the ducts and into your home.

If the burners won’t light up, it’s because natural gas has not been delivered to the burner for some reason or because safety measures won’t allow the burner to become lit. If the ignition process fails, it may be due to the thermocouple or flame sensor, two components with similar functions used in a standing gas pilot or intermittent or hot surface ignition pilot furnace. It could also point to a few other problems as well, so you should always trust heating repair to a trained technician who knows the proper safety procedures and can quickly identify the issue.

Talk to a professional technician about your heating in Salt Lake City by calling At Your Service Plumbing, Heating & Air.

  • Broken Thermocouple: A thermocouple is a component used in a standing pilot furnace, a model in which the pilot continuously stays lit. The thermocouple is part of the ignition assembly in the furnace, and its purpose is to sense whether it is safe to ignite the gas and send fuel to the burner. This is primarily a safety feature to keep the gas valve closed in case the pilot light goes out. If this component is broken, the gas valve should still remain closed. However, it will need replacement in order to light the burners.
  • Dirty Flame Sensor: Modern furnaces actually use a flame sensor instead of a thermocouple because modern furnaces most often use hot surface ignition to ignite the burners. This eliminates the need for a pilot light, as the flame sensor simply detects when gas has been ignited and shuts off the igniter afterwards. This part is hindered by any dust, and may need an expert to safely clean it from time to time, perhaps during annual heating maintenance.

Call At Your Service Plumbing, Heating & Air today to  talk to an expert and learn more about what may go wrong with your heating system or schedule heating repairs in Salt Lake City.

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Salt Lake City, UT Heating, Air Conditioning and Plumbing Services

At Your Service Plumbing, Heating & Air provides excellent heating, air conditioning, plumbing, indoor air quality, water treatment and water heater services throughout the greater Salt Lake City, UT area, including the installation of new systems and components, and the replacement of the old, as well as ongoing repair and maintenance. Established in 1980, we have served the home comfort needs of our local community for over 30 years. Whether you need your stop and waste valve replaced or a new "green," energy–efficient HVAC system installed, we can make sure that the job is completed properly. Our HVAC contractors are NATE–certified and we employ Master and Journeyman plumbers. We are confident in our ability to satisfy any issue that may arise in your home, 24 hours a day. Give one of our friendly staff members a call today to learn more about what we can do for your home.

At Your Service Plumbing, Heating & Air offers quality heating, air conditioning and plumbing services throughout the Salt Lake City, UT area, including repair, installation and maintenance.

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When it comes to ensuring that you are comfortable during the winter months in Salt Lake City, you need to make certain that you have an excellent heating system. We offer comprehensive heating services in Salt Lake City, including installation, replacement, repair and maintenance services for a wide variety of equipment, including boilers, furnaces, and radiant heat systems. Whether you’d like to save more on your energy bills from month to month with an energy efficient heater or you want to retrofit a zone control system into your existing furnace setup, we provide heating solutions.

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For truly year–round comfort, your home needs an excellent air conditioner. At Your Service Plumbing, Heating & Air offers excellent air conditioning services throughout the Salt Lake City, UT area, from AC repair to maintenance, installation to replacement. We can make sure that your entire home is cooled to your satisfaction, no matter how hot and unpleasant it gets outside. We want you to feel comfortable in your home, and we have the experience and expertise to make sure that this is the case.

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Our services go well beyond HVAC, however. In addition to providing heating and cooling solutions, we provide a wide range of plumbing services throughout the Salt Lake City, UT area. From whole–house repiping to drain cleaning, water line installation to leak detection, sprinkler system timer repair to kitchen plumbing, we have got you covered. We can make sure that you are able to use water safely, effectively, and efficiently in your home.

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