Aircon air handler positioning 18 September 2021 at 5:34PM edited 18 September 2021 at 5:37PM in LPG, heating oil, solid & other fuels 6 replies 81 views

danrv

Hi
I’m having multi split aircon installed for main area heating/cooling next week. Have discussed it in depth with the company and they’ll fit an outdoor Toshiba condenser with three indoor air handlers.
The most common position and probably the easiest for the indoor units is high on the wall and that’s what’s been agreed. 

Main use is for heating the main living areas and the system is sized accordingly from the survey (3 x 2.5kw units).  As heat rises, I’m wondering if the air handlers in this position will be ok.
Spoke to a neighbour who had something like this taken out. Says the high positioning wasn’t working as heat rises. It’s a council bungalow so maybe not sized sufficiently.
Now has ASHP wet system.

This will be my downstairs heating so just wondering if normal radiator positioned units might be better.
I realize that not many here have multi split aircon but any experience or help would be appreciated.

danrv

Should be ok.

QrizB

I've not had any experience of them in a domestic setting but we have above-head-height and ceiling-mounted units in the conference rooms at work and they seem to do the job perfectly well. Because the air is blown it doesn't rely on convection to circulate.

danrv

QrizB said:

I've not had any experience of them in a domestic setting but we have above-head-height and ceiling-mounted units in the conference rooms at work and they seem to do the job perfectly well. Because the air is blown it doesn't rely on convection to circulate.

Thanks for the reply.
Yes, all the ones I’ve seen around and about are mounted the same. My local shop and car service centre have single splits with above head height mounted units.

tacpot12

My daughter has them in Denmark for heating and they work fine. The fan is enough to push the heat down and a around the room. 

Rodders53

The ones in our house work well to heat and cool the rooms, as required.
But they are shoulder month use for us as heat.

The vanes adjust to push air down to floor for heat and across the ceiling for cooling, by default.

danrv

Rodders53 said:

The ones in our house work well to heat and cool the rooms, as required.
But they are shoulder month use for us as heat.

The vanes adjust to push air down to floor for heat and across the ceiling for cooling, by default.

Thanks.
Should be up and running tomorrow. This is my heating system so will figure out best settings.