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The scale of the heating problem

Trying to quantify the heating requirements for the house: Using the last year as a benchmark, we consumed 1669 m3 of gas – found by subtracting last August’s gas meter reading from this years. This equates to 53669 KWH purely from the calorific value of the gas. The last year was unusual due to the pandemic (more time was spent at home) and the heating was set to run from the thermostat for about 50% of the year. Our bedrooms are heated to 20 Celsius with the rest of the house running colder but acceptably so. So if we use this as a benchmark we would be in the right range. Assuming the boiler is 50% efficient at turning power into heat, the power required to heat the house for the last year was 26834.5 KWH. This ignores the gas used to cook food as this can be assumed to also heat the house.

Starting point

We will aim to keep the same level of heating with a new green heating solution and re-use as much of the plumbing and infrastructure as possible to minimise the cost of the upgrade.

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