How often should you run your furnace has no definite answer. A furnace’s runtime depends on several factors ranging from its geographical location to the house’s insulation. Furnaces are complex machines with intricate wires and components, all working in tandem to keep your house at the desired temperature. Therefore, to understand the healthy period of a furnace’s operation, you must first understand a few other things.


Your furnace runs in cycles. These cycles are known as heating cycles, during which the furnace operates to bring your room to the desired temperature. Once the temperature set in your thermostat is reached, the furnace turns off automatically. The temperature drops over time, and when it goes below the set temperature, the furnace turns on again. The period in which the furnace remains operational constitutes one cycle. On average, you may witness about 2-3 cycles of 10-14 mins each in a furnace.

Plenty of factors determine the number and length of each cycle. A cycle may be longer if temperatures are extremely low in an area. Similarly, there may be more cycles in an hour. Insulation also plays an important role in determining the cycles of your furnace. Better insulation calls for lower cycles per hour as it helps retain the warmth longer. However, if you notice frequent cycles, for example, every 3-4 minutes, there might be something wrong with your furnace or its ductwork.
Schedule a heating repair in La Puente right away to avoid any further damage.


Insulation plays an important role in determining the duration of your furnace cycles. When your house has top-notch insulation with its doors and windows tightly sealed, its attic and floor well insulated, it becomes difficult for the heat to dissipate into the spaces, and your house stays warm for long. With new or perfect insulation, you only witness one or two cycles in an hour. That may change if you reside in a particularly cold region, with the temperature nearing freezing points. plays an important role in determining the duration of cycles of your furnace.

Energy-Efficient Settings

Today many furnaces have built-in smart thermostats that allow for higher energy efficiency and maximum comfort. Few thermostats may keep your furnace running as long as it’s switched on at a low setting to provide consistent and efficient heating in your house. Contact professional heating repair near me to upgrade your furnace’s efficiency.


The temperature might be one of the most obvious determinants of your furnace’s runtime, but it’s important, nonetheless. Even if you have a highly efficient furnace that’s designed to run on fewer cycles, you may witness a higher number of cycles if the temperature outside is extremely low. Despite adequate insulation, lower temperatures absorb heat energy faster, thus bringing the temperature in your house faster and initiating a heat cycle.

Temp Air System Inc. has been in the HVAC service industry since 2002. With over 20 years of experience, our team of technicians is laced with knowledge and skills that guarantee maximum customer satisfaction. Whether it’s an installation or routine maintenance, our services are designed to cater to each customer and their unique HVAC appliance. Contact us today.

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Temp Air Heating & Cooling
Temp Air Heating & Cooling

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