The water heater makes odd noises like creaking or a high-pitched squeal. The water color changes from clear to dirty. The water suddenly smells odd. 30-40 minutes for gas to fill a 40-gallon tank.

Gas water heaters are ... and there are 3.78 liters to the gallon. The GPM rating for a propane tankless water heater is an indication of the amount of hot water the unit can supply.

Gas water heaters rely on natural gas or propane to ... How long does it take to install a 40-gallon hot water heater? The installation of a 40-gallon hot water heater typically takes two to ...

Both tanked and tankless gas heaters send hot exhaust gases out of the flue ... "The cost and efficiency differences between a 40-gallon and a 50-gallon water heater are usually minimal," he says, "So ...