I wouldn t drain it.
Drain hot water heater in attic.
Sediment can collect at the bottom of your water heater so it s important that you run fresh water through it to flush it all out.
I m going to throw this out first then we can get into the process.
Detailed walk through on how to drain and flush a gas or electric water heater.
The tank will begin to fill.
A water heater in the attic saves square footage tank type water heaters are big hulking cylinders filled with anywhere from forty to seventy gallons of hot water.
Allow the water in the tank to drain out.
How to drain and flush a water heater.
People want to try to drain these things.
Close the drain valve and pressure relief valve.
This would be a good example of how not to install an attic drain pan.
Yes it is a drain pan and it is under the water heater but the tpr valve drain piping was routed through a roughly cut out hole in the side of the pan so the pan will immediately leak when water drips into it and it has no drain to exterior even if it was watertight.
Turn off the incoming water supply in the attic do this at the water stop at the top of the water heater.
Close valve refill tank restart water heater close the drain valve remove the hose and turn on the cold water supply.
Adjusting the temperature is harder.
Possible causes of attic water heater leaks 1.
If you re gonna drain a water heater.
If you re gonna drain a water heater to keep the sediment down you have to do it in our climate if you don t have a water softener every three to six months.
Once the tank has drained open the cold water supply valve for a few minutes to flush out any sediment.
It s problematic to have a water heater in your attic because leaks can damage your attic and foster an environment for mold.
I show how i flush my water heater fro.
Turn the water valve to start the flow of water through the heater so it drains through the drain valve.
It may be more costly to replace.
Go back to the hot water tap opened earlier.
Release the pressure relief valve on top of the tank.
Giant tanks of water happen to take up a lot of square footage and primarily for that reason many builders have opted to place water heaters in the attic of new homes.
Maintenance should be done yearly and is more difficult because going into the attic is cumbersome.