This boiler mistake could be secretly spiking your home’s temperature this summer – This is the 'one change that can make a big difference on your cooling bill'

A plush orange sofa with white and orange throw cushions, in front of blue built-in bookshelves, decorated with small vases and books. .

If you've been struggling to beat the heat this summer, with temperatures continuing to rise across the U.S., there's one simple yet serious mistake that could be secretly spiking the heat of your home: setting your water temperature too high.

Our HVAC pros warn that this little-known error could be warming your space without your knowledge, wasting money, and causing your AC to work even harder.