All too often people go to turn on their furnace only to find that it’s not producing any heat. Use this guide to understand the causes of the #1 problem people face when using a furnace in their homes.
Restricted Airflow
One of the primary causes of a lack of heat coming from your furnace is restricted airflow through the system. These restrictions come from clogged air filters, closed and blocked vents, and mechanical issues like a faulty circulating fan motor.
Faulty Thermostat
Your system’s thermostat has a limited service life of 10 to 15 years. After it surpasses this age, the sensors inside lose their ability to register temperatures accurately. Further, it’s possible for a thermostat to experience premature failures. This is easily solved by replacing your thermostat if you suspect that it’s not registering accurately or sending proper signals.
Wrong Thermostat Settings
Additionally, your thermostat may have incorrect settings. The most common is the fan switch being set to On, which keeps the circulating fan running constantly. Check the settings, and make sure the fan is set to Auto so that it only runs with heating cycles.
Ignition System Malfunction
The ignition is responsible for lighting the burner to produce the heat that will warm your home. There are several components within the system, and if any of them malfunctions, the result is a failure to ignite the burners.
Faulty Safety Mechanisms
Your furnace has several safety mechanisms built in to mitigate the risks of operating a furnace. The common components that may experience problems include the flame sensor and the upper limit switch. The flame sensor prevents fuel from flowing into the burn chamber if it doesn’t detect a flame. The upper limit switch prevents overheating at the heat exchanger, which can cause a crack and a carbon monoxide leak.
Residents of Rosemead turn to Real Time Bros Heating & Air Conditioning when they want heating and cooling service they can trust. Since 2017, our team has provided AC and heating repair, maintenance and installation together with duct cleaning, insulation installation, and indoor air quality services. Call to schedule your furnace repair appointment with one of our expert technicians today.
