Anyone replaced central heating with air to air in bungalow?

barker77

As per title wondering if this is a good idea vs keeping central heating and heating a heat pump. Im thinking going immersion for hot water but the idea of being able to cool and heat rooms and dehumidify etc is quite appealing. That with cheaper cost cos bungalow with suspended timber floor means I don’t have to lift floorboards to insulate central heating pipes.
Keen to see if anyone else has thought or done similar ? 

QrizB

Not a bungalow but @danrv has a thread where he did it in a semi? Replaced his storage heaters with an AAHP.

https://forums.moneysavingexpert.com/discussion/6269423/7-8k-for-aircon-system

matelodave

I'd have thought that a bungalow would lend itself to  a split A2A system as the piping from the external unit to the indoor air handlers could run through the loft space.

barker77

Yeah that’s my thinking. Currently only found one manufacturer that can run more than 5 units off an outside unit - LG. If anyone else knows of others or can recommend an installer I’d be very grateful . 

matelodave

How many do you need

barker77

6 units - hoping to cover bathroom from hallway which technically otherwise would make it 7

subjecttocontract

Mitsubishi can run x4 per outside unit so, x2 outside units would do you.

QrizB

barker77 said:

Yeah that’s my thinking. Currently only found one manufacturer that can run more than 5 units off an outside unit - LG. If anyone else knows of others or can recommend an installer I’d be very grateful . 

Why a multi-split?

If you have a AHU in the loft, you only need one indoor unit - the AHU. Then ducts to the other rooms.

I had a whole-house blown-air storage heater (yes, a bit weird) that worked like that.

You're unlikely to find a packaged deal on the internet as they're very much bespoke, but something like this:

https://www.revk.uk/2022/04/new-air-con-part-4.html

Speak to a local installer, if you're serious about this.

barker77

QrizB said:

barker77 said:

Yeah that’s my thinking. Currently only found one manufacturer that can run more than 5 units off an outside unit - LG. If anyone else knows of others or can recommend an installer I’d be very grateful . 

Why a multi-split?

If you have a AHU in the loft, you only need one indoor unit - the AHU. Then ducts to the other rooms.

I had a whole-house blown-air storage heater (yes, a bit weird) that worked like that.

You're unlikely to find a packaged deal on the internet as they're very much bespoke, but something like this:

https://www.revk.uk/2022/04/new-air-con-part-4.html

Speak to a local installer, if you're serious about this.

I wanted to keep within a reasonable say 6/7k budget which those don’t really look like they would be the double unit thing im trying to avoid too as also looks expensive 

matelodave

AFAIK the permitted development rules dont apply if you want more than one outside unit or you want to use it for cooling as well as heating so you'll have to get planning permission

barker77

Not too worried about that I just don’t really have the room for 2 units