Cooling upstairs bedrooms

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timmmay

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#1448390 10-Dec-2015 21:05

lapimate:
Kickinbac: ... So I will have four heat pumps, a 6.0kW unit for kitchen/lounge /dining and a 2.5kw in each of the bedrooms ...
Doesn't this increase the possibility of thermostatic "hunting", unless all the control units are somehow interconnected?

What is "thermostatic "hunting""? Is that where each device is set to auto and tries to target a different temperature? The solution is best practice anyway - don't use auto, use heat or cool mode.

Kickinbac

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#1451353 16-Dec-2015 10:07

lapimate:
Kickinbac: ... So I will have four heat pumps, a 6.0kW unit for kitchen/lounge /dining and a 2.5kw in each of the bedrooms ...
Doesn't this increase the possibility of thermostatic "hunting", unless all the control units are somehow interconnected?

It's not something I'd worry about in a house. If you set the temperatures similar in the same mode (heating or cooling) the units will do their own thing to suit the temperature in it's room. I can't see that you would be heating in one room and cooling in another. For domestic heat pumps I always recommend not using auto mode - set the unit for heating or cooling only depending on the time of year.

richms

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#1451488 16-Dec-2015 12:08

I frequently found myself heating in one and cooling in another, if the suns in the room in the morning it needs cooling even in winter, other side of the house is like a fridge and needs heating. Shame that the multi headed split systems cant handle that and just move heat from one room to the other or I would have got one.

Richard rich.ms

Kickinbac

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#1451596 16-Dec-2015 14:07

richms: I frequently found myself heating in one and cooling in another, if the suns in the room in the morning it needs cooling even in winter, other side of the house is like a fridge and needs heating. Shame that the multi headed split systems cant handle that and just move heat from one room to the other or I would have got one.

That's interesting, we often get that in commercial buildings but not often in houses. That is a benefit of having individual split systems.

richms

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#1451617 16-Dec-2015 14:35

Thats why I got multiples. The guy said the figures don't really stack up for 2 indoors on one outdoor anyway and it really needs 3 to save anything.

Richard rich.ms

Kickinbac

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#1451644 16-Dec-2015 15:10

richms: Thats why I got multiples. The guy said the figures don't really stack up for 2 indoors on one outdoor anyway and it really needs 3 to save anything.

It generally costs us more to buy multi split equipment than the equivalent number of single splits. It then the installation, piping and wiring that evens them out.

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richms

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#1451673 16-Dec-2015 15:29

It was the cant heat in one and cool in the other that made putting up with more outside boxes worth it for me. Quite happy with my fujitsu's which can hold a constant low fan speed, unlike the whatever it is my friend had put in which ramps it up and down to the low setting as it sees fit. So annoying to sleep with that happening.

Richard rich.ms

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