As a repairman for heating equipment, one of the questions I often hear from homeowners is whether or not they should turn off their furnace during the summer months. The answer is not straightforward, as it depends on a number of factors.

First and foremost, it’s important to understand that your furnace and air conditioning unit work together as part of your HVAC system. When your thermostat detects that the temperature in your home has fallen below the desired level, it signals the furnace to turn on and begin heating the air. When the temperature rises above the desired level, it signals the air conditioning unit to turn on and begin cooling the air. So, turning off your furnace entirely may not be the best idea.

However, you can turn off the pilot light on your furnace during the summer months. This will save energy and reduce wear and tear on the furnace components. You can also turn off the gas supply to the furnace to ensure that it doesn’t accidentally turn on during the summer.

It’s worth noting that some HVAC systems rely on the furnace’s blower to circulate cool air from the air conditioning unit throughout your home. In these cases, you will need to leave the blower running even if you turn off the pilot light. This will ensure that cool air is still being circulated throughout your home and preventing the build-up of humidity.

Another factor to consider is the climate in which you live. If you live in an area with mild summers, turning off your furnace may not have a significant impact on your energy bills. However, if you live in an area with hot and humid summers, it’s important to keep your HVAC system running smoothly to prevent damage from humidity.

In conclusion, while turning off your furnace entirely may not be necessary during the summer months, you can turn off the pilot light to save energy and reduce wear and tear on the components. Be sure to leave the blower running if your HVAC system relies on it to circulate cool air throughout your home, and consider the climate in which you live when making your decision. As always, if you have any concerns or questions about your HVAC system, it’s best to consult with a professional.