Nickfromwales

Nope....youu're defo in the clear.

I can put you in touch with a decent battery / inverter installer. Decent and knowledgeable chap. No direct affiliation, and standard caveats would be applicable "try before you buy" etc etc. He doesn't want to be 'famous' so PM me if that's of any interest / help. PS, only one "u" in use, OK Don't worry, I don't think anyone noticed.....

Just post it here, less the company's details if you want some more opinions.

These series "branched" systems just seem so impractical and impactful from an installation PoV, plus typically start off with larger bore for larger dwellings. I will always stick to radial systems with 92mm or its 'oval' equivalent ( which is almost rectangular btw ). If you don't want huge posi-joists just for the sake of getting MVHR installed, it's got to be radial.

Got one such install, ground graduated slightly with the mini-digger to help with angle, and that's chucking out a megawatt a month through summer

Oops.... I take it you've not properly read the forum T&C's? If you brag it up too much and you've less than 10 posts, you have to buy everyone a pint. Sorry matey, rules is rules. Check the small-print next time eh

Why not in pods / tubs? You don't need a frame system, other options are out there.

Yup.

I would disagree with the above ( sorry again ). I almost always install these in corners of the rooms, diagonally opposite the doorway wherever practicable.

Yup. You should be making the runs as least resistance as possible, to ensure fan speed is minimal and audibility is low / non existent. Remember to include box attenuators at the machine to kill the noise at source. Install them on the ducts to atmosphere also if you have neighbours / other noise close by.

Depends on the application / room. If I want super-quiet I’ll do 2 single runs to 2 valves, or if it’s for flow ( en suite shower ) I’ll just do 2 runs to 1 valve because on boost it won’t be heard anyways. Designs should be bespoke, and adapted to each project room by room. 👌

Can’t trust anything anyone from Carmarthen says, sorry. 🤥😂

Basically clear silicone, the last hope for a wonky plumber.

Depends on the room / space, and what it's doing ( fresh or extract ) and so on.

It's our thing....it's what we do lol. Not quite. As it is, eg metal exposed to the elements, you're in a world of hurt. Just imagine snow resting up against that and a bit of wind-chill to boot. The duct will conduct that like crazy. Much as you want to pull the door closed on this, I'd pull it out and do it again, properly. The issue is the spiral seam which naturally wants to track water through the point at which the sealant / or compression seal is trying to keep water out. Random image grab; https://www.google.com/search?q=ubbink+roof+terminal&rlz=1C1CHBF_en-GBGB910GB910&source=lnms&tbm=shop&sa=X&ved=2ahUKEwjI9Mu1ibv8AhXSQcAKHfkfAvMQ_AUoAnoECAEQBA&biw=1280&bih=609&dpr=2#spd=16728725204361805693 This is what it should look like, so imagine rain on that, and how the joint is lost up high within the cowl of the fitting.

I've got runs of 35m in my current PH job and I have simply doubled up with 92mm ducts. I expect zero issues / elevated sound levels etc. Trickle flow rates are equivalent to a decent sized hamster coughing. People seriously over-think this.

Search "multi foil" here

Seriously?

NuHeat = 💩.

"wee"

Not even half a pasty?

I feel a crowd-fund event a-coming........

It's your type of 'sport' alright..... You could mount this outside on top of the glazing. Think of the views then, but watch out for a crack appearing

Twat! PMSL.

Conversely, I find PTFE better for this 'stop when it points to 12 o'clock' situation. I turn the fitting in dry, counting the number of turns until it stops ( in the wrong place ). I then turn it back out and count the number of revolutions again to be sure. I PTFE the thread, with around 21 turns, and then count the revolutions when going back in, knowing which one is the last full revolution before it goes past and bottoms out. Served me well to this day, and I'll carry on doing this for the next ones.