Has anyone got rough energy usage figures? I'm guessing they're all inverter systems, and if you open the windows in the morning for a cool down, the units only need to run at a low level to maintain the temp, rather than work to bring it down, but very curious how much power usage people are seeing.
Split Air con
- Thread starter YoungBlood
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Still got my eyes on the Pansonic system, with each bedroom done plus both the living room and dining room.
No doubt the price has gone up since I last enquired. But in keen to wait until I have decorated, it'll be very difficult to do once they are installed.
No doubt the price has gone up since I last enquired. But in keen to wait until I have decorated, it'll be very difficult to do once they are installed.
I have a 4 bedroom ducted unit upstairs and have had this on last few nights and it draws about 600w/h to keep the bedrooms at about 20.5c. During the day when it's working a bit harder about 800w/h. Our wall unit in the lounge is probably 1/3rd of this.
Pretty sure you can remove most of the case on my Mitsubishi units, but easy enough to mask around it.
When I say decorate I mean new plasterboard ceiling and plastering the wall. Upstairs is all done just need to do downstairs.
That's very encouraging. I'm expecting us to be able to cope with a wall unit in our study and main bedroom (both upstairs), so energy usage could be very low given how well insulated the house is.
Man of Honour
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2 bedrooms overnight, gaming room most waking days, 5 units total. Overall house cooling usage…
Last year: 406kWh
This year so far: 171kWh
Daikin inverters, most efficient available. Rarely use windows tbh.
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Soldato
At full power mine draws about 1.5kw (it’s an external unit rated at around 5.5kw of cooling). So it’ll run at that if the house is hot to cool down.
Once at temp, it sits at around 7-800w on days like this. Then when the sun goes down it’ll reduce to 300-400w, even if the outside temp is still 30 the sun seems to make a huge difference as our external unit isn’t shaded due to space restrictions, and we also use it for heating in winter so needed to compromise.
At night, I leave it on, as a few hours into the night it turns the inverter off and effectively goes to nothing until the sun comes back up.
This is for keeping 3 bedrooms at around 20, and the downstairs also benefits and doesn’t go above 22 or so as we leave all the doors open.
Thanks both @CaptainRAVE @Matthew.M , these are very palatable figures!
Soldato
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I'd post mine as well but they are very much in the same ballpark as what @CaptainRAVE posted above, sort of 300-400 ish a year across all our units with a mixture of heating and cooling
To the people who use them for heating, is the AC your main source of heat? Do you also have a gas boiler?
I'll probably need my boiler replacing in the next few years, it still works absolutely fine but is a very old non-condensing Baxi thing with seperate hot water tank, gravity fed etc etc. The most logical path would be to move to a combi and get rid of the tank but I'm also considering installing a split AC system to use for heating and cooling and getting rid of the boiler completely.
Not convinced by a heat pump yet although I understand the technology is similar, I think the difference is just that the split AC systems have heating elements within the mounted units?
I'll probably need my boiler replacing in the next few years, it still works absolutely fine but is a very old non-condensing Baxi thing with seperate hot water tank, gravity fed etc etc. The most logical path would be to move to a combi and get rid of the tank but I'm also considering installing a split AC system to use for heating and cooling and getting rid of the boiler completely.
Not convinced by a heat pump yet although I understand the technology is similar, I think the difference is just that the split AC systems have heating elements within the mounted units?
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Man of Honour
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Our neighbours even ended up copying us.
Still mainly use our gas boiler.
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Soldato
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Hmm ours isn't as quiet as some are making out, especially on a very hot day, but as soon as you are a few meters away it's not particularly disturbing...
As for using it for heating, it's not our only heat source, have gas boiler too - but the AC heats the room so quickly, it's great to whack it on for 10 minutes first thing on a very cold morning
As for using it for heating, it's not our only heat source, have gas boiler too - but the AC heats the room so quickly, it's great to whack it on for 10 minutes first thing on a very cold morning
Is yours mounted on the wall mine is on the floor on some black type pads/blocks and that seems to absorb the noise mine is a mitsubishi unit
A lot of time it will be the fan noise which is hard to overcome, especially as the unit gets older the coil gets slightly dirty even the all the cleaning in world wont over come a nice fresh coil.
We have issues with our units when sites choose a standard model with single of dual speed fans.
I could hear mine from the ground earlier today.
Soldato
I remembered to set mine to come on a few hours before I got home whilst I was at work. It was lovely getting in the house after the bike ride.
My outside unit is pretty quiet, it's more the fan moving air noise I can hear. A few meters away it is barely audible though.
My outside unit is pretty quiet, it's more the fan moving air noise I can hear. A few meters away it is barely audible though.
Soldato
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Our external unit is on the floor on some rubber blocks also, daikin unit
This seems to dampen the noise for me anyway, again mine has been on all day and in to the evening I just don’t know what I did without it to be fair!