Heat Pumps - post here.

If it’s a new build it’s gonna be easier to set it up correctly. And any issues with the setup are not gonna show as much as the heating bills will be very low anyway.

if your a plumber and you retrofit a heat-pump; and you set it up to be as efficient as it possible can be; it’s very likely that your gonna get call backs. It’s not different to oil and gas boilers; plumbers just turn up the boiler stat to 80C and it looks like they did an amazing job; and they never get called back.

the problem as you say with the “don’t touch it all” approach is that it’s very unlikely that a plumber; even one that is trying really hard to do a good job; will get the thing configured well first attempt. It might take a 2nd or even 3rd attempt at tweaking the settings to get it working well.

consider someone gets a heatpump installed in June; the heating isn’t even gonna come on for several months.

As these things move into their life cycle, I'd be curious to know how much on average people have to spend on servicing and repairs, compared to oil or gas. Not cheap I bet, like the crazy service bills for electric cars I read about, and that's not including repairs to them.

UFh in the house and no rads it really is a very comfortable way to have the house the same temp and not to hop out of the shower on a winters morning and not get that cold bust of air. For new houses its a no brainer to have a heat pump/ufh. Backward thinking to not install it in new house as you dont need any heating anyway from april and still haven't switched it on yet.

The plumber should expect to come back 2 or 3 times in that case. In lots of cases they are charging around 20 grand for a major capital expenditure in someone's home that should last 20-25 years, take some pride in their work - its professional, and it will pay off when the economy tanks and people still recommend them. I suspect with a bit of experience and effort, and accurate assessment of homes requirements, call backs could be limited substantially.

Thats what’s needed but That’s not what plumbers or any tradesperson wants. They want in, job done, gone, never to return.

Anyone able to provide any insight?

I have an ecodan for the past year, 4 bed semi.

Do you bother with zones with yours? I have everything set to maintain the same temp, and just to cool slightly at night.

Good stuff, thanks

I only replaced one wiper😎

Is it best to get an air to water heat pump and hit water tank serviced during winter on a cold day so the engineer can get a good idea of how efficiently it's running? Or can it be serviced any time of year?

Can they be reviewed during the service?

For me it all came down to flow temp, the lower the flow temp you can use in your ufh/rads the less energy you will use and more efficient it will be. But every house will be different as to how low you can set your flow temp depending on cold bridging, airtightness, solar gain and levels of insulation .

Also the more zones you have with a heat pump the less efficient it will be.

I looked at weather compensation but found the swings in temp in Ireland are moderate so I set the flow temp myself depending on the outside temp.

I had to experiment in the winter to find the range of flow temps I could use, but I never go above 28c flow, and it has to be 0 or below outside for 28c flow temp in my situation.

I usually have it at 26c flow temp and that is my sweet spot, unless its bitter cold out.