JWP127 wrote:
coolmom42 wrote:
You do want a water heater bypass, unless you live somewhere that you don't need to winterize. Otherwise you will have to fill the water heater with antifreeze, before you get any antifreeze in the hot water lines. Aside from being a big waste of antifreeze, it's a PITA to get OUT of the water heater in the spring.
I thought so too until he showed me that you can drain the hot water heater, by removing a cap, and then opening up all the faucets and blow air into the pipes. Does this sound correct?
Well you have to hook up an air compressor and set the pressure correctly. Many people here do this, but I have never felt that it would positively get all the water out. It's also not clear to me how it gets the water out of the pump, and it doesn't work at all on the city water inlet valve, which also needs some antifreeze.
If you pump the antifreeze through, you can see it coming out of all the faucets, and be sure that water is displaced from the lines.
