HVAC pros reveal the 7 costly mistakes homeowners always make in summer – they're making your bills skyrocket and reducing your AC's lifespan

A maximalist bedroom. A double bed with colorful throw cushions on it. Two wooden nightstands with matching black lams either side. A framed photo of two people sitting down on the wall behind. .

With the summer heat in full stride, your HVAC system has no doubt been the hero of the house. Be cautious, however – there are some common summer HVAC mistakes you might be making that are sending your energy bills soaring.

From careless use of appliances to poor system maintenance, seven habits can strain your system, increasing costs while shortening the life of your unit.