Split air-con - will this plan work?

scarletjim

We want to have split system air-con installed for our main bedroom, but neither of the two external walls to the bedroom are suitable as they are diagonal – so I’m wondering whether either of these plans will work on other walls. I’ve attached a simple plan diagram here with the two options:

https://www.dropbox.com/sh/fgpyeg2vqmfth3o/AADvG3WUJL4QXo5LgWNfMDr_a?dl=0

1.      Fit the internal unit on an internal wall, feed the pipework from the other side of that wall across the bathroom ceiling (only about 120cm), then out of the bathroom external wall. We’d then just fit some kind of trunking over the pipes in the bathroom so it looks ok. One potential problem – does the pipework have to always be horizontal or flowing downwards? I’d presumably need to feed it upwards by about 20cm or so as soon as it leaves the internal unit, otherwise it will be hanging down in the bathroom rather than being relatively close to the ceiling…

2.      Fit the internal unit on the bathroom external wall immediately facing the doorway (only 120cm away), leave the door open (unless we are using the loo obviously!), and hence let all of the cold air blow into the bedroom. Would that work?

Note that we’d only really need it on when sleeping at night, it wouldn’t be on in the day or evening.

Is either solution better than the other? Or do they both have significant problems? If I book an installer, are they likely to take issue with either approach?

Many thanks to anyone who can assist. 😊

ashe

Isnt having aircon in a bathroom going to be a bad idea? generally humid air or needing windows open. Expecting that air to flow into the bedroom is probably sub-optimal, as well as maybe needing to consider the zoning of bathrooms in the same way as you do fans - not sure if aircon stuff would be compliant but not an expert. 

Have you considered just ringing Boxt and see what they say? you don't have to then use them but they can advise

Rodders53

In the bathroom would be silly.

What is this 'diagonal external wall' issue?  It makes no sense to me.  Unless you mean an attic conversion with sloping ceilings?

Condensate drain pipework needs constant downwards slope/drop or a pump (extra cost and noise).

Call in a few local aircon installers for suggestions/quotes. Any that can come out very  soon are not the ones you want. Good installers will be very busy just now.  NB the external unit siting so as to minimise noise and/or visual impact on neighbours will be as important as location of the indoor unit.

You can get floor console indoor units that may sit under one of your windows, if your bedroom is an attic conversion with mainly sloping ceilings?  Random Example not a recommendation: https://www.saturnsales.co.uk/Panasonic-CS-Z25UFEAW-Floor-Console-Air-Conditioner.html

scarletjim

Rodders53 said:

In the bathroom would be silly.

What is this 'diagonal external wall' issue?  It makes no sense to me.  Unless you mean an attic conversion with sloping ceilings?

Condensate drain pipework needs constant downwards slope/drop or a pump (extra cost and noise).

Call in a few local aircon installers for suggestions/quotes. Any that can come out very  soon are not the ones you want. Good installers will be very busy just now.  NB the external unit siting so as to minimise noise and/or visual impact on neighbours will be as important as location of the indoor unit.

You can get floor console indoor units that may sit under one of your windows, if your bedroom is an attic conversion with mainly sloping ceilings?  Random Example not a recommendation: https://www.saturnsales.co.uk/Panasonic-CS-Z25UFEAW-Floor-Console-Air-Conditioner.html

Sorry, I didn't explain the bedroom walls well at all (and probably still can't) - it's not an attic conversion, it's just the main upstairs floor, but nevertheless the slant of the roof cuts through the middle of the room, so the walls above the TV and the bed. I've added 2 pictures to the link to show you what I mean. Basically, the whole wall is either sloping, or window, there is no free vertical surface on those walls. Of course the floor consoles you suggested might solve that problem - I must say I never knew there was such a thing. However, those two walls back onto our garden and front of the house, so would prefer not to have them look unattractive on the outside if it can be avoided. Would consider it if options 1 & 2 are not possible.

I've also added pictures for options 1 and 2 so you can both see what I mean.

Does the pipework from the internal unit come out nearer to the bottom of the unit rather than the top presumably? Meaning we'd potentially have pipework 20cm or so from the bathroom ceiling... It's not a dealbreaker though, with some white trunking we could make it ok I think.

Generally we're not too worried about placement of the external unit on the wall that I do want to use - our house backs onto a carpark used by a local business, there is hardly ever anyone there to hear any noise, and our fence is quite high so it would be impossible for anyone to see the external unit unless it was about 10 feet up. Given that we'll probably do the lounge at the same time, I expect the external unit will be on, or near, ground level.

scarletjim

ashe said:

Isnt having aircon in a bathroom going to be a bad idea? generally humid air or needing windows open. Expecting that air to flow into the bedroom is probably sub-optimal, as well as maybe needing to consider the zoning of bathrooms in the same way as you do fans - not sure if aircon stuff would be compliant but not an expert. 

Have you considered just ringing Boxt and see what they say? you don't have to then use them but they can advise

Would the air be that humid at 11pm if we normally shower early morning and sometimes late afternoon? And would the cold air from the unit not go straight into the bedroom if we positioned it appropriately? Appreciate it's not optimal though, plus with the other points you make regarding zoning etc, it might be a non-starter anyway.

Yes I do intend to contact Boxt and a couple of others (Appliances Direct seem to offer installation for a fraction of the price of Boxt, not sure why...), but thought I'd seek some opinions on here first because people on here are so often so incredibly helpful and take time to explain things properly etc.

ashe

scarletjim said:

ashe said:

Isnt having aircon in a bathroom going to be a bad idea? generally humid air or needing windows open. Expecting that air to flow into the bedroom is probably sub-optimal, as well as maybe needing to consider the zoning of bathrooms in the same way as you do fans - not sure if aircon stuff would be compliant but not an expert. 

Have you considered just ringing Boxt and see what they say? you don't have to then use them but they can advise

Would the air be that humid at 11pm if we normally shower early morning and sometimes late afternoon? And would the cold air from the unit not go straight into the bedroom if we positioned it appropriately? Appreciate it's not optimal though, plus with the other points you make regarding zoning etc, it might be a non-starter anyway.

Yes I do intend to contact Boxt and a couple of others (Appliances Direct seem to offer installation for a fraction of the price of Boxt, not sure why...), but thought I'd seek some opinions on here first because people on here are so often so incredibly helpful and take time to explain things properly etc.

AD installation is "from" £750 and only includes 5m of pipe, so I imagine if you need anything more out of the box than that it goes up

grumbler

IMO, there is no anything wrong in having it in the en-suit if you want it, but I more like "1". The coolant pipes can go through the loft wherever you want; the condensation pipe can go to the bathroom. The simplest option, IMO, is for condensate to drop into the shower tray, but there are other possibilities.

plumb1_2

Condensate into a shower tray, totally cowboy job.
A small condensate pump can be located inside the wall mounted cassette , pumped into the loft. From there into waste/soil pipe or down the external wall in overflow pipe to a gully 

grumbler

Come on... Gully? It's not condensate from a boiler, it's almost pure distilled water, small amounts and only at night.

plumb1_2

grumbler said:

Come on... Gully? It's not condensate from a boiler, it's almost pure distilled water, small amounts and only at night.

Ya but would you want slime on your wall/path, good practice is to discharge into a gully if possible . With a air break.
And can discharge litre’s of water a day, more in summer,less in winter.

markin

Put it in the corridor and open all the bedroom doors.

I don't think the inside units are ip rated for a bathroom.