- Joined
- 27 Jan 2008
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- Location
- Llanfair Caereinion, Nr Welshpool
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We can select when water is heated, and how much water is heated, and how good the insulation is keeping the heat in. In an old caravan I installed a 1 kW 7 litre under sink water heater and the cupboard did not seem to get warm, and when the power had been tripped all day, I still had hot water, (12 volt pump) so clearly very little loss.
However in this house even a 40 gallon cistern will only stay warm 3 days. We use the heat to air cloths, and clearly the insulation is rather poor. Some of the new tanks
clearly have a lot better insulation, and using the Willis immersion heater system
you can control exactly how much water you heat by how long it is heating for, however the question is if worth the expense? OK the Willis immersion may only cost £35 but it will cost a lot more than that by time it is fitted.
I don't often have a bath, mainly shower, and I am sure a shower it cheaper to run, but much is down to how much electric you have, instant heat sounds good, but I looked at it here, 5 areas of the house have hot water, 2 kitchens 2 bathrooms and a shower room likely also laundry room but washer is cold fill so not used, there is a 60 amp supply to whole house, and things like hot taps often need a heavy cable to supply them and you loose room under the sink, even if there is enough supply to house.
So to fit hot taps is around £1000 per tap, may be more, so even if it can save money in the long run, with just 10% interest on the money has to save £100 a year to break even, so is it worth it?
However in this house even a 40 gallon cistern will only stay warm 3 days. We use the heat to air cloths, and clearly the insulation is rather poor. Some of the new tanks
I don't often have a bath, mainly shower, and I am sure a shower it cheaper to run, but much is down to how much electric you have, instant heat sounds good, but I looked at it here, 5 areas of the house have hot water, 2 kitchens 2 bathrooms and a shower room likely also laundry room but washer is cold fill so not used, there is a 60 amp supply to whole house, and things like hot taps often need a heavy cable to supply them and you loose room under the sink, even if there is enough supply to house.
So to fit hot taps is around £1000 per tap, may be more, so even if it can save money in the long run, with just 10% interest on the money has to save £100 a year to break even, so is it worth it?