Best settings for thermostats in A rated house

Cyrus

Thought the collective brains trust here might have an idea :)

For reference i have lived in the house 5 years and im still not sure, but the co servicing our heat pump suggest manual with a constant temp.

Background we have a ~ 200 sqm A3 rated house with ground floor UFH and rads on floor 1 and 2. Its a samsung heat pump system and Joule digital thermostats, there are 3 downstairs and one each on the first and second floor.

Originally they were set up with a 5 and 2 day config where mon - fri there are different settings for different events during the day and weekend days are just split between day and night, i had them set up in this config, with temp being dropped at night time to 18 degrees,

I noticed after the most recent service they had all been set to manual only and temp set to 20 degrees or whatever you want. What makes more sense in our config?

Wearb

With underfloor it's best to let the thermostat control it. Even where there are rads, the same most likely applies. There are a lot of unknowns here. The rads might be supplied at a different temperature than that of the underfloor and therefore might need to be adjusted differently.

You should ask your service guy to explain all of this to you. A good service person should do this as a matter of course.

listermint

Wouldn't a smart system like the nest with multi thermostats be best catered to decide for you. Its probably a sound investment as it learns the house on your behalf.

Cyrus

https://www.boards.ie/discussion/comment/118367322#Comment_118367322

Perhaps but I already have a 'smart ' system with multiple thermostats, I'm all for gadgets but not sure if there is a benefit here.

Cyrus

https://www.boards.ie/discussion/comment/118367279#Comment_118367279

The thermostat is controlling it though, the difference is do you set it at one temp and leave it at that 24/7 or do you set it to lower the temp at night by a few degrees when no one is in that part of the house. I assumed the latter but appears the service co suggest the latter. I wasn't at home when he did it.

listermint

https://www.boards.ie/discussion/comment/118367523#Comment_118367523

What system is it. I.e what makes it smart. A smart system learns the temps and controls all rooms trvs based off of that. You set the comfort levels for each specific zone.

Theboinkmaster

We have similar setup and we just have it set to 20c all the time - so summer, winter, night, day etc it’s always at least 20c.

the plumbing guys advised at the time we bought that was best way to have system, as do the annual service guys.

Wearb

The heat build up time and heat loss times are so great in an A rated house that any smart system is redundant. You would control it by season rather than shorter periods. The thermostats take care of the day to day running.

MakersMark

https://www.boards.ie/discussion/comment/118367607#Comment_118367607

I agree.

Set to 20 deg downstairs, 18 upstairs and forget about it.

listermint

https://www.boards.ie/discussion/comment/118367607#Comment_118367607

Simply untrue Tbf. An a rated house will have multi zonal control or should have and will have capability to set individual room temperatures all by itself.

The notion an old thermostat is better is not accurate.