Long slender neck wrote: ↑Thu Feb 27, 2025 9:30 am
Hot water out of the taps. I have only ever lived with combi boilers which have given me hot water on demand. How much did it all cost?
Last boiler I got about 5 years ago cost me about £1885 and came with a ten year guarantee.
The heat pump is outside and creates heat like a fridge but in reverse - it compresses refrigerant which then takes "heat" from the outside air (even down to -20) and then expands - giving off the energy to heat up water. The water flows into the house to the internal unit. This then directs some of the hot water through a coil inside the domestic hot water tank - heating up the water for the taps (think of the coil of hot water like an immersion heater). The rest of the hot water from the pump is directed through the radiator system.
The hot water tank is really well insulated and holds more water than we need at any one time. It's constantly there - even when we have a power cut that shuts down the rest of the system, we have hot water on demand from the tank.
I think the whole lot - including solar panels and a battery, would have cost about £35K or so. We didn't have to pay as we're off-grid here (using LPG tank gas), and are tenants. We qualified for a scheme where the council pays for the whole lot - except the battery, which the landlord paid for. Technically, the whole lot (minus battery) belongs to me, the tenant, as it was I who qualified for the grant, rather than the house, but I guess if we were to leave, then the landlord has gained all that extra value for nothing. (If we were to leave in bad terms, then I guess I could take it all with me!)