dpmiller

you might try opening it and checking it's strainer too..

get one of these on hire? https://www.arbortechtools.com/en/as170/

and if it is alarm, they tend to have an anti-tamper switch inside..

putting screws in...

surely you'll need an impact driver for the rest of the build?

so your chart is fake then.

"All"? Since when please, with proof.

Poured thinscreeds don't crack at 70mm...

I'm gonna say you'll want more floor insulation as a beam&block subfloor will be chilly...

I went with an inhibited ethylene glycol with reduced toxicity, Thermox DTX.

unpossible!

4. Live in NI.

The ASHP will "slow down" as the energy is not being removed that it is adding. Just like a modulating boiler.... Remember that the underfloor loops share water with the heatpump but aren't directly connected due to the magic of the mixer valve...

^ another vote for pluginsolar.

Once the house is pressurised air will follow the extract route quite happily

you might try LBS? https://www.lbsproducts.com/clay-roof-tiles/slate-effect-tiles/snowdon

looks like we crossed... Check it's plugged in and free to rotate, and that there are no anti-frost protections in play.

are both fans actually running?

yes, less restriction means less fan power to get the required flow

Any chance N and E are reversed at the source?

A high resistance on neutral might do it (as there's always *some* leakage current to earth) but it does sound like it's the RCD. but whenever you *do* get the RCD to latch in and the lighting MCB trips it that does allude to a problem with that circuit. Is there an extractor fan in the loo perhaps? Where is the power coming from for the van? What kind of cable? Is there an earth rod?

why do people need so many clothes?

^ this, although the Peak/ Lailey&Coates units do indeed come in British Racing Green.

you bad man.

Our pipe down the lane from the Toby is just about a kilometre. The 32mm is well deserved here...