Probably like half the country we are looking at air con to be fitted to the house at some point. But have noticed that you can get ashp with cooling.
Anyone got this system working in their house? Am interested because it would replace the gas boiler and save us having to get an aircon unit fitted too.
Cheers
Moved to 40C thread
Two types of cooling are possible, non condensing or condensing.
The latter requires a lot more work especially if retro fitting into an occupied property but can be done
Daikin have a new air to air system. '500%' efficiency versus the '350%' of their air to water systems. You get a wall unit in each main room which blows either warm or cool air. Looking at it for a new build block of flats I dealing with.
Cool ta, daikin was the main one that popped up on a search.
I think it will need a proper discussion on options as it makes more sense to take this route than have separate gas boiler and ac units
Daikin have a new air to air system. '500%' efficiency versus the '350%' of their air to water systems. You get a wall unit in each main room which blows either warm or cool air. Looking at it for a new build block of flats I dealing with.
My brother is architect in NZ who back in the UK worked with BoKlok (IKEA) houses. Air to Air is more common elsewhere in the world, more efficient and cheaper to install. He's got a lot of experience with it.
It's just us Brits like a radiator in the room but not a plastic fan unit.
And Daikin etc selling them as 'new' is funny.
FWIW, brother installed full system in his own house - fan/input units in living room and bedrooms, everywhere else has extract for MVHR approach. He paid one electrician a day's work to wire up and get controls working. Iirc, he paid something like NZ$2200 (£1000) for the pump... And the UK same pump is 2x the cost or more.
We're getting a quote next week for a Daikin system to cool two rooms. Unit will be outside with ducting outside. I think you can get units that will do 5 rooms. We've a initial quote (before site visit) of £4.2k. We will be going ahead with this.
Are you getting the £2.5K Gov grant on the install?
Are you getting the £2.5K Gov grant on the install?
Is that for air con? Didn't know there was one. We've already had the £7k one for a heat pump.
Theoretically, you can flip an air to water unit to cooling mode and use "radiant cooling". Heat geek has a YouTube video on it. thinking about seeing if my Midea unit is capable of that.
It's just us Brits like a radiator in the room but not a plastic fan unit.
I'm probably not alone in my primary Experiance of it no matter where I am in the world is that it's been a noisy din. I'm sure you get "silent " fans. But I've never seen one that's silent and make as little sound as a radiator. -that probably has something to do with it
Radiant cooling will have little cooling effect if it is done through radiators.
if you want full cooling then you need fan coil units, fully vapour sealed pipework, drainage from each fan coil and a heat pump that you can cool with. If you have a buffer it needs to be suitable for cooling and you may need to add a buffer to give sufficient volume when in cooling mode.
Cooling loads are often higher than heating loads so your heat pump may be undersized for your cooling requirements.
You can also mix condensing and non condensing on the same system but it probably means adding pump sets and some more controls and a bit more complication.
If you want to you can actually simultaneously heat and cool and use the rejected heat but that is more for commercial applications.
Some heat pumps are ready for cooling others you have to add a cooling chip or similar.
We recently had 3 fancoils and an outdoor heat pump installed at our house (in Canada btw), mostly for cooling purposes as we've still got the gas boiler for heating.
It does heat but, as I suspected, it doesn't feel the same as through the radiators. I never like places with forced air heating/cooling through vents, and it's more akin to that than from a hydronic radiator. No radiative element to the heat isn't as beneficial for thermal comfort. Unfortunately it's not really feasible to be have cooling without forced air. The unit is kind of ugly...but my house is no longer 28degrees, so I can tolerate it.
Took a day to install. Also works as a dehumidifier.
Cheers all. Interesting info there I hadn't considered, particularly the difference wren m between air to air and air to water.
Going to need to do some thinking to work out options, cheers
