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Last seen: Sep 5, 2026
@old_scientist i dont but i want to be able to reasonbly replicate what an installer will produce so i can unserstand any proposals.
@andrewj we already have a 6kw inverter, 8.55kw of south facing panels, and 16.12 kw of signergy batteries. i am pretty sure its not cost effective to...
Just discovered a major flaw... been using the 99% temperature, not the 99.6!!!!! So instead of a -3 design temp, it should be -6.1. i have attached m...
Thank you all, i have made several adjustments based upon the advice given including bridging and going with the new MCs figure of 0.5 ACH. Also had a...
@rob-of-york Thanks, my gas useage does include the gas hob, and the hot water combi boiler, but i think leaving them in should be fine.
@rob-of-york Thank you for that, whilst familiar with the concept of bridging in terms of damp, never thought of it in terms of heating. i have been o...
@editor Thanks Mars, I have been enjoying playing with the formulae, gives me something to do on long night shifts. i actually really enjoying doing t...
@old_scientist i had a look at this, all my gas consumption for New Years Eve was 85kw. Thats the highest day for two years. Winters have been mild th...
@jamespa Also this coming winter I am going to run my combi system at as low as it will modulate and see how we get on.
@jamespa Hi James, the living/kitchen/dining room is around 40% of the property. My annual gas usage is 9300kw, of which i am estimating 170kw a month...
I used this heat loss calculator based on my worse day which was 85kw of gas, on a -3 day at 22 degrees. Temerature on the day in question was -3 unti...
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