What do the letters “K,” “L” and “M” on copper tubing mean?
Type K is the heaviest. Type L is medium weight and used most often for water lines in homes. Type M is thinner and is used underground or for light domestic water lines if local codes allow. I am getting no hot water from my electric water heater. The high-temperature cutoff may have been tripped, which requires someone to press the reset. Otherwise it’s probably a faulty heating element or thermostat, which can be replaced. I’m not getting enough hot water from my electric water heater. The temperature control may be set too low. Otherwise it’s probably a faulty heating element or thermostat, which can be replaced. The water from my electric hot water tank is too hot. The thermostat may be set too high, or it may be faulty. It could also be a grounded heating element. I am getting no hot water from my gas water heater. The pilot light might be out, or you may have a faulty thermostat.
