Anyone replaced central heating with air to air in bungalow?

QrizB

barker77 said:

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

Per RevK's blog, his system was £10k so yes, 50% more than your budget.

matelodave

this could be a possible solution - https://www.airconco.com/ducted-air-conditioning-units/ although I dont know what the cost might be.
An air handler in the loft with vents in each room. The major downside is that rooms wont be individually controllable

However Mitsubishi do mini-split systems with up to 11 indoor units - https://les.mitsubishielectric.co.uk/products/air-conditioning/multi-splits so I guess a check with Mitsi UK to find out if they are available in the UK and where you can get them from

sheenas

A few alarm bells ringing here. I think if you have 7K after the government grant and any other grants maybe from the council, then think about other issues. Firstly insulation is key to getting good results and so lifting the floorboard would be a good idea. Further the heat pump is a low temp. device and a gas boiler are considered a high temp. devices. What that means you most likely need bigger radiators (and maybe pipes) for the heat pump to work efficiently (floors up again). The heat pump will provide hot water and heating so there is no need for electric hot water.  In short you may well be redecorating and should consider that in the budget.

QrizB

sheenas said:

A few alarm bells ringing here. I think if you have 7K after the government grant ...

There is no government grant for AAHPs.

sheenas said:

Further the heat pump is a low temp. Device and a gas boiler are considered a high temp. devices. What that means you most likely need bigger radiators

There are no radiators with an AAHP.

sheenas said:

The heat pump will provide hot water and heating so there is no need for electric hot water.

An AAHP does not usually provide hot water.
Did you read the thread before replying? Was your reply written by AI?

danrv

matelodave said:

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.

That's how mine was installed. Through the gable wall and clipped to the beams.
Multisplit aircon is very good and possibly cheaper to install that ducted A/C.

Six indoor units would probably require two
outdoor inverter heatpumps (heating and cooling).

matelodave

danrv said:

matelodave said:

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.

That's how mine was installed. Through the gable wall and clipped to the beams.
Multisplit aircon is very good and possibly cheaper to install that ducted A/C.

Six indoor units would probably require two
outdoor inverter heatpumps (heating and cooling).

see my comment above, Mitsi do multi-split systems with up to 11 indoor units, you just need to check what's available

arms

We have one 5 way unit outside connected to 3 single wall units downstairs and 1 unit upstairs. It is in loft with vents into each bedroom with the return in ceiling on landing. Control is also on landing. So we have a spare port if we want an extra unit. We lose individual control in each bedroom, but we just leave the upstairs one on quiet mode 24rhs a day ,so the upstairs is a constant temperature.

Something like https://www.airconditioningworld.co.uk/lg-cl12f-n50-3-5kw-