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Your house won't have a heat loss of 24-30kW. The average 4/5 bed detached is probably 10kW max. 65 outlet flow temp should be fine for tank if you set it at 55 (which again should be more than hot enough for your DHW demands). Are all of the rads getting as hot as they should be? 90oC flow...

Ok but must be other factors at play there and I guess linked to how gas boilers are typically used with set backs etc. If you had it running 24/7 just inputting heat at the same rate that the building lost it, it wouldn't be 28kW unless your house was really open to the elements surely? I think...

We live in a 1800sq ft detached house which isn’t particularly well insulated. Calculated heat loss figures came in around 8kW. 12kW ashp (needed to be slightly higher as the badge rating isn’t quite what it produces as -2 but not far off)- more than adequate to heat the house/supply plenty of...

Primary pro is generally regarded as one of the best types to use.

Weather comp and no zoning would be my recommendation. Turning off heating in individual rooms that aren't used in my opinion/experience saves the sum total of naff all, not to mention the faff of keeping doors closed etc. Heat the envelope of the entire building to one temp that you are...

I used these to hang a heavy radiator and they were great. https://www.screwfix.com/p/fischer-tx-duoxpand-hex-head-frame-fixings-8mm-x-120mm-4-pack/732hl Just make sure they are the hex head rather than the TX ones. I bought one pack of the TX ones by mistake and they were a bit of a nightmare...

I've done a few tiling jobs with this one: https://www.wickes.co.uk/Wickes-Heavy-Duty-Electric-Tile-Cutting-Saw-230V---650W/p/215755 Has a few negative reviews but honestly never had a problem with it cutting porcelain tiles (using diamond blade). I've also got a rubi manual cutter but never...

Ours is in an unheated utility room at the back of our garage, which gets cold, and it works fine. Doesn't make any discernible difference to drying time, or cost.

Indeed. Our system does the same, and ticks along at between 35 to 45. 47 on very the coldest days. No zoning. As you say, zoning another thing that in most domestic properties is all a bit pointless. Just keep whole house same consistent temp is probably best. Heating engineers should really...

Simply not true and we have neither of those things (either a well insulated house or money to burn) I can assure you, thanks. I think generally if you are looking to overhaul your central heating/DHW it’s another option that should be considered.

Night and day between gravity and sealed/unvented in terms of hot water pressure, for us….was definitely a worthwhile upgrade. Worth getting quotes for ashp as well if a viable option- as quotes will include the whole lot, getting rid of existing tanks, converting to pressurised system, new DHW...

Common misconception that combis are cheaper for DHW, for whatever amount of usage really. They aren't in our experience. Definitely go for weather comp as Notch suggests. We have an ASHP now but regardless of what heats the water, with weather comp the house is much more comfortable. Would...

Thanks all, seems like I might be overthinking the structural integrity side of things. I was going to use expanding foam around the edges to try and stop any draughts.

Hi all, I'll be redoing the flooring in my kitchen soon and I have some gaps in the existing floorboards where they have been cut/removed to allow for access to services presumably around the perimeter of the room. The previous kitchen installers just nailed 6mm ply over them, which I've...

Thanks madrab just wanted to make sure wasn’t missing something. I’ve ordered that set.

Hi all, I'm fitting a standard convector K3 radiator in my kitchen and Im going to replumb it so the pipes are chased into the wall rather than through the floorboards. Thus, I was looking for some equally bog standard corner lockshield valves to go with it (don't want TRV one side as will...

Ok. I wouldn't completely discount tray options simply on this basis then. As per above...nero's looks very nice. I installed a Bette tray in our last shower room. Ours is in a niche, but the style you want would be something along these lines...

I've done all of our 3 bathrooms so I wouldn't be put off DIYing any of it. There is a lot to it though so your 6 point to do list will be more like 20 or 30. Just consider everything you are putting in, so what materials you are using (so if you do go with tray, what type/material. If grout...

When you say wet room style shower, do you mean you just want a wet room? There is a big difference between this and a tray/enclosure. I’d start off by researching what is involved in the former perhaps if you haven’t already, as it definitely isn’t simple. Personally Id be looking at tray...

Some good points to consider- thanks