Can you flush calcium build up from hot water heaters
has sit for 40 years,only ran for 4 years
No. Calcium build up is solid material, and cannot be flushed out of drain valve because drain valve opening is too small.Calcium must be vacuumed out.Open following link for illustrations.http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html
Yes, you can flush calcium build up from hot water heaters. Ensure you turn off the electricity and the breaker. This ensures the unit is deactivated. Then you can connect the garden hose to the bottom of the heater. Check out www.getreadygear.com.