how big is your hot water tank ......
when i looked into this , a small bungalow - with a small combined hot & cold water cylinder - we did not have anything like enough capacity in the tank to use a pump , and the cost to change the tank in the loft was very high.
when i looked into this , a small bungalow - with a small combined hot & cold water cylinder - we did not have anything like enough capacity in the tank to use a pump , and the cost to change the tank in the loft was very high.