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I'm looking at a new build bungalow, and the builder has specified a Vaillant Arotherm Plus heat pump and CenterRad compact radiators. The heat pump spec claims 75⁰C output, and therefore it can drive radiators, but that feels to me like it's designed to retrofit into older properties. I would...

I have a shower with a 15mm chrome riser pipe up to a waterfall type head. I want to cut into the riser and add a diverter valve that will feed a regular shower head, because I don't want to replace the whole riser. Problem is that I can't find a diverter valve with 15mm fittings. Does such a...

I want to replace some leaking lockshield valves. The pipe comes out the wall horizontally, which is a pain since a normal lockshield will end up sticking out into the room. The best option I can find is Danfoss RLV-D or RLV-S because there's no handle to stick out. Problem is, I don't know...

Hi. I have a Vokera Compact 28 where the manual timeclock's auto setting doesn't seem to be working, and it is always on. Rather than try to fix it I'd prefer to go with a new external controller, and the current favourite is the Salus RT510RF+. What isn't clear is if the switch circuit should...

The tiles that border our valley gutters have a sizeable gap under them. They are not mortared. There's enough space in there for birds to nest, which is not ideal, so I want to fill the gap with mortar. Is it OK to first put some expanding foam in there as a backing? Otherwise it's going to...

I have just finished installing an i-on40H and all appears to be well, except I can't access the web server. I have enabled remote access, and the web server is enabled. The panel is connected to the router, and it has an IP address. I haven't changed the port number. If I try to access the...

I checked the sticky and couldn't find this so here's a quick, and possibly dumb, question... If I have a wireless panel from, say, Scantronic, can I use wireless PIRs from Honeywell or Pyronix or whoever? Or must i stick with Scantronic? I'd hope that these things all use the same protocols...

I was planning to get a Pyronix Euro Mini, but it would be good to have more than 10 zones (four bed bungalow with four outside doors and a garage). So the Galaxy G2 is looking promising, with 12 zones of of the box and, unlike the the Euro Mini, it is expandable. But the model range has me...

In my last two houses I installed the venerable Scantronic 9448, which was a pretty straightforward task. In the new house I'm looking for something that supports proximity tags for ease of use. A wireless fob would be nice, but not necessary. So far I've narrowed it down to: Scantronic...

I'm looking at installing insulation under my suspended floor. The joists are 120mm deep. My plan is to use loft insulation held in place by netting. Loft insulation isn't readily available in 120mm thickness though, so I'm looking at 100mm or 150mm. Which is best? 100mm will leave a gap...

Hi. I'm looking at buying a house that has LPG central heating, but an electric hob in the kitchen. If I want to change to a LPG hob then the obvious thing would be to feed it from the LPG supply that goes to the boiler. Is that usually the best solution? Or is it better to have separate LPG...

Hi. I have a WC with a concealed cistern, and the outlet of the cistern doesn't line up with the pan. Whatever incompetent idiot installed it just put a load of sealant and plumbers mait around the bung, but this started to leak recently (which is how I know about the problem). One option is...

I need to join a piece of black plastic water pipe to 22mm copper. The plastic pipe is labelled Hydrodare 3/4" class C (photo attached). I measured OD at 27mm, which seems to confirm the sizes given here -> http://www.stevensonplumbing.co.uk/alkathene-accessories.html Hydrodare-classc by...

Hi. I'm looking at whole-house UV water filters and one major installation question I need to address is whether the filter would feed the house water system directly or if it will feed a storage tank in the loft that in turn feeds the house. I'd prefer to use a storage tank, but I'm...

I have a mid-80s house with a roof that is getting worn out. The roof is made from fibreboard sarking overlaid with mineral felt that is cracking in places, then a counterbatten arrangement supporting concrete tiles. One builder suggested that, to save costs, he could remove the tiles...

This will be quite a long post, so make yourself comfortable... :) I have a Vokera Maxin 28e combi installed. It is about 10 years old and just recently it has been only delivering intermittent hot water. This mostly showed itself in the shower when it would be hot for 30 seconds - 1...