How much does it cost and how much will I save?
Typically, a domestic hot water system which will provide enough hot water for a 3 bedroomed 3-5 occupancy household costs circa £3,000. (subject to free survey).
You can expect the following savings…
Gas boiler with an electric shower you can save £180 – £350 p/a
Oil boilers – you can save £320 – £380 p/a
Electricity hetaing / boiler – you can save £500 – £750 p/a
To calculate the above we used the below assumptions:
3 – 4 occupant household
18kw boiler heating water for 1hr per day
Gas 4.7 p/kwr
Oil 6.2 p/kwr
Elec 12 p/kwr
390w Thermodynamic system compressor running 12hrs p/d