Split Air con
- Thread starter YoungBlood
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Man of Honour
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Having spent the day working in a room at 30C, decided for the first time this year to switch on every unit once I got home. The whole house is now at a comfortable 22-23C 
Yeah, probably just needs a screw tightening but it's only audible when next to it.
Soldato
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It's awful today, still running on a noisy portable in our living room which is better than nothing. I just can't convince the missus to get a split unit because she doesn't want "a big ugly box on the wall"
And a ducted unit was quoted at about twice the price which isn't affordable for us.
And a ducted unit was quoted at about twice the price which isn't affordable for us.
There are no heating elements. The heating works by reversing the refrigeration cycle. Pumping heat from out to in rather than in to out. I do use our single wall split for heating but only as an auxiliary. It works very well and anecdotally it is very efficient. The caveat to that is that really its impossible to calculate the COP because its not really possible to measure the heat energy output.
Another factor is the form factor of it. Typically you have high mount wall units, since heat rises and the emitter is high level you have to forcibly blow the warm air at the floor. That creates drafts which some might find makes them feel cooler, and I would personally say the room is always cooler at floor level. You can get low mount units but they then compromise on cooling.
Of course you also will have to consider what will be your heat source for hot water.
You don’t, Daikin do a unit that will do a hot water cylinder and 3 indoor units off a single outdoor unit.
Can air-to-air heat pumps provide domestic hot water?
Yes, an air-to-air heat pump (also known as an air conditioner) can bring hot water to your home. With Daikin's Multi+ solution, heating, cooling and hot water are supplied with one system. It connects up to three units and one domestic hot water tank and is compatible with a 90 and 120-litre tank and a wide range of indoor units, offering unrivalled flexibility. Our Multi+ solution includes an intuitive full-text display on the domestic hot water tank for monitoring and adjustment of all settings, including scheduling and water temperature.
Air-to-air heat pumps (also known as air conditioners)
Energy-efficient sustainability sleek stylish elegant discreet versatile flexible comfort optimal air quality indoors
www.daikin.co.uk
Yeah there's clever stuff available but what is the price?You don’t, Daikin do a unit that will do a hot water cylinder and 3 indoor units off a single outdoor unit.
Can air-to-air heat pumps provide domestic hot water?
Yes, an air-to-air heat pump (also known as an air conditioner) can bring hot water to your home. With Daikin's Multi+ solution, heating, cooling and hot water are supplied with one system. It connects up to three units and one domestic hot water tank and is compatible with a 90 and 120-litre tank and a wide range of indoor units, offering unrivalled flexibility. Our Multi+ solution includes an intuitive full-text display on the domestic hot water tank for monitoring and adjustment of all settings, including scheduling and water temperature.
Air-to-air heat pumps (also known as air conditioners)
Energy-efficient sustainability sleek stylish elegant discreet versatile flexible comfort optimal air quality indoors
I'm curious how that system works, is it pumping the heat from the air handlers into the hot water? Good stuff if so but it isn't clear from the website. Typically multi splits can only heat or cool, can't do both simultaneously. If that is the case and the DHW is taking heat from outdoor air then its going to be a problem in the summer time..
Man of Honour
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Wrong thread 
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Soldato
That's unfortunate. The "big ugly box on the wall" doesn't bother me in the slightest. After about a fortnight you don't even think about it being there. Best thing we ever did was having splits put in.
I’m shocked at that with people saying about the big ugly box on the wall, some of the more modern units looks quiet nice in design and seem to fit in with the decor, had ours on all last night again it was just so hot out side
It’s a standard heat pump, it can either heat or cool and can’t do both at the same time. You just heat up the cylinder when you’re not cooling or you just shut off the cooling to heat the water once/twice per day.
It’s only a 100l cylinder so it isn’t going to take long and it’s no different to a combi or regular air to water heat pump that does one or the other.
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Soldato
Does the Daikin unit include ventilation? If not, you'll need to open the windows sometimes!
Man of Honour
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The vents are open, they do the rest. At most we’ll open them on latch. We have indoor cats, so can’t open them anymore.
Soldato
Fair enough. How's the air quality? They aren't really for ventilation as such; more for keeping the building ticking over!
Don't indoor cats choose to be inside or not?
Getting my system serviced today for the first time. Had it a year already. Been working overtime the last week that's for sure. I personally prefer to turn them off late in the evening before bed and open the windows instead, but then the humidity does shoot back up again.
Man of Honour
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Air quality is fine, we also have dehumidifiers for the winter. Our air con units also have multiple filters that help, the air is probably cleaner than that of outside.
We have a ragdoll that shouldn’t be outside. She’d likely flop in the middle of the road and roll around.
Soldato
OK. Remember that you breathe out CO2, which then accumulates in the house. This needs to be replaced by oxygen. Filters won't do that - you need actual air change.
If you can get your hands on a cheap CO2 sensor, it might be worth you measuing it.
