Jamesh
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- Jun 28, 2020
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Taken from a woodworking forum interesting .....
Hope my recent experience might be of interest, in 2018 I completed the self build of our latest house a dormer bungalow of 2250 sq ft, a friend of mine also completed a self build around the same time his was a house of approx 1800 sq ft. Both homes were very well insulated as we are both in the building trade and realise that insulation is the cheapest way to ensure low running costs. We installed an oil boiler for heating and hot water, my friend went down the air source heat pump route. My friend used a specialist heating firm to install his ASHP system which cost him £16,000 (this does not include the cost of the underfloor heating or oversized upstairs rads the ASHP system was connected to), our boiler and oil tank cost £2,100, our heating system uses ordinary rads so there was quite a cost saving there as well. Over the last 3 years our oil consumption has been constant at 900-1000 litres per year, so on average, by buying our oil in the summer when its cheapest its cost us roughly £600 per year. Unfortunately my friends ASHP has not been so economical, stripping out the domestic electric costs (lighting and household electrical use), the ASHP is using £1500-£2000 per year.
This might be a bit simplistic, but our oil system saved us £13,900 in purchase price and every year going forward we will be saving £900-£1400 per year in running costs. Just for a figure lets say the boiler lasts 20 years (although I know of many that are over 30 years old and still going strong) including the cost of the ASHP system my friend stands to be around £35,000 out of pocket, and the cynic in me says that until all the electric produced in this country comes from renewables a lot of the extra expense will come from burning fossil fuels, so how is that helping global warming?
Hope my recent experience might be of interest, in 2018 I completed the self build of our latest house a dormer bungalow of 2250 sq ft, a friend of mine also completed a self build around the same time his was a house of approx 1800 sq ft. Both homes were very well insulated as we are both in the building trade and realise that insulation is the cheapest way to ensure low running costs. We installed an oil boiler for heating and hot water, my friend went down the air source heat pump route. My friend used a specialist heating firm to install his ASHP system which cost him £16,000 (this does not include the cost of the underfloor heating or oversized upstairs rads the ASHP system was connected to), our boiler and oil tank cost £2,100, our heating system uses ordinary rads so there was quite a cost saving there as well. Over the last 3 years our oil consumption has been constant at 900-1000 litres per year, so on average, by buying our oil in the summer when its cheapest its cost us roughly £600 per year. Unfortunately my friends ASHP has not been so economical, stripping out the domestic electric costs (lighting and household electrical use), the ASHP is using £1500-£2000 per year.
This might be a bit simplistic, but our oil system saved us £13,900 in purchase price and every year going forward we will be saving £900-£1400 per year in running costs. Just for a figure lets say the boiler lasts 20 years (although I know of many that are over 30 years old and still going strong) including the cost of the ASHP system my friend stands to be around £35,000 out of pocket, and the cynic in me says that until all the electric produced in this country comes from renewables a lot of the extra expense will come from burning fossil fuels, so how is that helping global warming?
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