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I worked in the Metering sector of the electrical industry for four decades during which time there were many ups and downs as we navigated our way through changing times the most distressing decade of which was the 90's when our company shrank from over a thousand to less than two hundred emplyee's...

1 air change per hour, that's really impressive, I shan't be attempting anything near that as from my limited understanding 3 to 4 would be the best we could hope to achieve without resorting to vapour proofing the walls amongst others. Thanks for info on alternate small units as they're something t...

Air tightness is hard to achieve, especially with a revovation project (passive haus accept a lower standard for refurbs). Mine is a 1950s bungalow with brick cavity walls. For air tightness we replastered one coat externally, before 200mm insulation and acrylic render and connected the extenal wal...

Thanks everyone for all the info posted on this sorry matter. Having paid via debit card I didn't even know about Chargeback or any other means of redress, I'd just assumed the money had gone where ever and would have to wait the outcome of administration etc to discover if anything remained. Ideall...

Thanks guys for further nuggets of information hadn't even realisied there was such a thing as intumescent sealant so duly noted and a tube placed on order. The downlighters are LED's and have hoods above but these don't form a seal. Being a bungalow they are in the loft with no occupied rooms in qu...

Thanks chaps, I dont think your CO2 experience is reliable for much. It will very much depend on wind strength and direction. Let us know how you get on with the test. Are you an all electric house . Yes, all electric. I take your point about wind strength and direction as I certainly notice a drop ...

Thanks @Stig will check it out along with others. Thanks for link too.

Prior to installing an MVHR system I've booked the above in an attempt to get a figure for the current leakiness of our property, discovering where the leaks are, completing temporary sealing on the day to hopefully end up with an improved second figure. This to assist with deciding on whether to co...

Perhaps not the cleanest ever but a refreshing change after a week of high Gas consumption otherwise.
According to National Grid Live emissions are 38 g/kWh.

With electronic devices being capable of responding in m'seconds I had much the same impression and rather naively assumed batteries and inverters were already capable of doing just that but presumably not the case unless specific storage facilities are identified purely for this purpose outside of ...