The build

That's more friendly than I thought. I assumed you would need a plant room for all the kit. Oh, my mistake, the plant room is the polytunnel

P says thank you and he's deeply envious. He's been researching MVHR (just out of curiosity) it wouldn't be feasible for our old bungalow though. He'd like the opportunity to have a new build with all the tech, but neither of us would cope with the troubles, trials and stress you've gone through, let alone me having to make decisions. It just wouldn't happen

I wonder how many new developer homes incorporate the tech available now. I think solar/grey water and rain water recovery should all be mandatory.