I've always been taught that 120 - 125°F is the ideal temperature to set a water heater thermostat, as this temperature range high enough to reduce or eliminate the growth of harmful bacteria that can cause Legionnaires disease, but still low enough so as not to cause immediate scalding although burns can still occur, particularly in children and elderly persons. Higher temperatures also increase energy consumption and reduce the life of the unit. All that being said, households with children, disabled or elderly persons may want to consider a lower temperature setting, in the 110-120 range. If a dishwasher recommends hotter water in the 140°F range for instance, tempering valves should be installed at individual faucets, particularly important for the bathtub/shower, to reduce the maximum temperature delivered. Note that most modern dishwashers are equipped with an internal heater to boost the water temperature as needed, so water heater settings exceeding 125°F are rarely necessary for residential use. On the flipside, some commercial water heaters have thermostats with a maximum setting of 180°F, and a minimum of 120°F.
Should we mention running the hot water to ensure the CO2 is actually going to detect something? If the hot water tank is full and up to temp, the burner no burning 🔥 The CO2 leak is guaranteed to not be leaking if burner no burning 🔥
Hi , I have a natural draft water heater that flues into the brick chimney. Sometimes when I use kitchen or washroom fan my water heater starts back-drafting… would installing a liner into the chimney help to stop backdraft? Do I also need a combustion air intake? Thanks
You can open a window if you turn the fans on... It would help with negative pressure at the water heater. Also check the furnace air returns(close them), they can also create negative pressure if they're located in the same room/basement. Basically anything that can create a vacuum will create backdraft. You have the best knowledge of what factors you can control. But next water heater, I would go with a power vent one. It would take care of your backdraft
