Heating and Cooling Make sure the switch on the side of the furnace did not get shut off.Make sure the filter has been changed. If you have a digital thermostat make sure the batteries are good.Check to make sure the electrical breaker isn’t tripped. Plumbing Every day you could waste five gallons of water with a leaking faucet.If the drain is slow try using a plunger.Does your water pressure seem low? You could buy a pressure tester. Do you run out of hot water? The water heater should be drained at least once a year. Appliance Repair Advantages of refrigerator water filters:They reduce the health risks of drinking tap water. They make your drinking water much healthier overall.They make your drinking water much tastier.