A male heating and cooling technician kneels down to change the air filter for a home furnace. The filter is on the floor in front of the furnace, which is just out of view at the top of the photo.
A male heating and cooling technician kneels down to change the air filter for a home furnace. The filter is on the floor in front of the furnace, which is just out of view at the top of the photo.
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