SteamyTea

Can't help then.

Has it been set to cooling mode somehow. Your unit may be a rebranded Carrier ASHP. Some people pay extra to use cooling mode.

Something like this is cheap and will show power and energy on an item. https://www.ebay.co.uk/itm/403211701093

Or 2.5 [kWh] ÷ 24 [h] = 0.104 kW. Don't a Sky box use about that.

Yes, some older TVs draw similar power when on standby. (it is kWh, now kwh)

Had that. It every now and again, makes a deep rumbling noise. I do wish they would put an air release valve on the door so you don't have to wait wait 30 seconds to open if after shutting it.

I don't know enough about fridges at all. We have 3 at work, one is very quiet (Bush), one is just a basic, cheap, domestic one and seems quiet enough. (Currys) The bigger, posh fridge, is very noisy, but it is about 12 years old now (Liebherr).

Does the type of compressor make much of a difference. Piston Screw Scroll Hermetic

@Onoff said he would do it for £5k, so I will charge you £5.5k, plus your walk on glazing. I will be getting a skip.

Got a nice little Natural History Museum there. Red lined the 205 1.9 GTi on it. Was a bit scary. The cam chain tensioner on my company Vectra disintegrated on it. Was the end of that car. I have never stopped at the McDonalds on it, not once. Had a black girl I knew show me what she bought in the Ann Summers shop in Watford. Second layby up from the M25 heading north.

While I think about it, don't worry about all the different ideas about what may be wrong. This is just the forum members trying to get to the real problem.

I assume this bedroom is upstairs, with radiators? Yes, it is all down to thermal losses after all. You can do a basic heat loss calculation and see if your hunch is right.

Like everything in life, pick your battles carefully, choose something that is easy, a bit different, and impresses. I also do it for a living.

Too true. If I cook my signature dish in a £50k posh kitchen, it tastes the same as if I do it on my £12 camping stove. Teas tastes the same out of my 4 quid kettle as it does out of my mates 50 quid one.

Timber and carpet (especially with underlay) are both good insulators. Does the area with tile and stone perform better? And is the downstairs circuit definitely at the 35°C to 37°C, or is that the main flow temperature? You don't really want to go too high on the UFH temperature as it hurts the CoP, and rather defeats the object of UFH.

I am more than happy with my Russell Hobbs. No idea what they do in larger sized ones. They all basically work the same, simple oscillator, a power transformer, some capacitors and the inductor. Making sure there is adequate ventilation for the clever bits probably makes the biggest difference to the reliability.

Assume it was to building regs for when the house was built. That will impede the power the UFH can deliver. Try taking the rugs away for a day or two, see if it improves.

When did the pictures on Page 3 change.

This may be a bit hard to establish, but if there is minimum insulation under the slab, and the pipes are quite deep down, heat will be leaking to the ground. How much, as a percentage of the floor, is covered by rugs and sofas?

Ask @pocster, he has views on CT1.

Yes. Used to install them. The worse job I have ever done was cleaning out the DE filter at the YMCA Sheffield. I still try not to think what those young men got up to. (quite often had to replace sauna benches because 'staff used to play about' in them)

I used to look at your office when I was lecturing from the tower block.

I think I know when "When did the United Kingdom start going wrong" Was 1975, when I moved here.

Yes I get the same feeling if I have to spend more than an hour passing though Devon.

Depends on the numbers. 88888 makes no difference But 9999 does