Mine's about 100-120, if I have the AC blasting. That's for 3000 square feet, traditional ranch. Do you have an electric water heater? If so, set that puppy to 125-130 degrees and see if that helps. My husband likes to crank that thing up so that the water comes out of the tap steaming, but you only need it so hot to kill bacteria, and anything over that and you're paying to heat water to a temp you'll never use.