Should I Use “On” or “Auto” on my Thermostat Settings?

thermostatThe thermostat in your home has various settings on it to keep your HVAC system running efficiently and comfortably. What is the difference between “on” and “auto”? Many individuals don’t think there is much of a difference between the two, except that they both get the air conditioning running. But there is a difference, and you always want to keep your thermostat switched to “auto.”

What’s the Difference Between the Two?

The “On” Setting – Your HVAC system will run consistently throughout the day, no matter what the temperature in your home is and what the thermostat is set at.

The “Auto” Setting – Your HVAC system will only run during the cycles your thermostat is set to. Once the desired temperature is reached, the fan will turn off (and remain off) and will start back up again if the temperature in the space changes.

Benefits of Using the “Auto” Setting on Your Thermostat

1. Lower Energy Costs. With the auto setting, your HVAC system will only turn on and run when it is necessary. Once the desired temperature is reached, the system turns off. This allows you to reduce the amount of wasted energy.

2. Less Frequent Repairs. Having an HVAC system that is running consistently means that it’s going to need more repairs compared to a system that is only running when it needs to be. This means less wear and tear on the fan and repairs will be fewer and further between.

3. Longer Lasting Filter. When your HVAC system is always running, the fan is removing any and all impurities, which means that your filter will need to be replaced more frequently. By running your HVAC system only when it needs to be (auto setting!) you won’t need to replace your filter as often.


Are you in desperate need of a new HVAC system or a thermostat upgrade? Give MRW Mechanical a call today at (781) 639-9222.

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