They don't in most cases, it's just recirculation.
Split Air con
- Thread starter YoungBlood
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Soldato
The ideal would be split air con with MVHR
Soldato
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They can have a fresh air supply attached to them.
You can get fresh air supply to cassettes easily enough as well. There’s a panel on the side of them that you can just remove.
Get a bit more complicated and fancy if you want it with a wall mount with it. MELCO don’t have any products sold in the UK that do it AFAIK but daikin do with the ururu sarara.
*edit*
MELCO do have one
Wall-Mounted Ventilation System | Mitsubishi Electric
The Lossnay VL-100(E)U5-E wall mounted ventilation units supply fresh air inside a room in an energy efficient manner
les.mitsubishielectric.co.uk
Lossnay with a split attached to it.
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Associate
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You can get ones that don’t require fitting by an F gas engineer now…are they any disadvantages to these?
Soldato
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You can't, but they do sell pre-gassed units and claim they don't need an F-Gas engineer.
from what I have read in this thread, they aren't as good, but better than the portable ones.
Associate
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Hmm, what about this?
www.appliancesdirect.co.uk
electriQ Easy-Fit 12000 BTU A++ WiFi Smart Wall-Mounted Split Air Conditioner with Heat Pump and 4m Pipe Kit eIQ-12WMINV | Appliances Direct
Buy electriQ Easy-Fit 12000 BTU A++ WiFi Smart Wall-Mounted Split Air Conditioner with Heat Pump and 4m Pipe Kit eIQ-12WMINV from Appliances Direct - the UK's leading online appliance specialist
www.appliancesdirect.co.uk
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Associate
I enquired about those when i was looking into getting AC fitted.
I was told as long as the kit is long enough.. If it needs extending, you need an f-gas registered fitter.
I was told as long as the kit is long enough.. If it needs extending, you need an f-gas registered fitter.
Really popular in the states by Mr Cool etc., the line set ships pre-charged with dry break connectors. You simply buy one with a line set longer than what you need and coil up the excess. Every bit as good as any other mini split no reason to suggest they are in any way inferior. I thought they had been withdrawn from sale in the UK after a strong pushback from REFCOM. Obviously they don't like it when you make their f-gas engineers unnecessary. The F-gas guy I had commission my unit had a fair bee in his bonnet about AO selling splits direct to public. Was still happy enough to charge up a system which I'd installed myself. £250 to pressure test, purge for half hour while eating his lunch then open the valve. If one of those DIY systems was an option I'd gladly cut out the F-gas man, the only difficult part of the install is core drilling the wall.
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Soldato
What sort of heat do people get from their split units in the colder months? I only got mine fitted in July and planning on using mine to use less gas where possible
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Soldato
Imo best to baseline heat with gas everywhere and then boost a specific room with aircon heating if you want.
I don't think it will really heat for cheaper than gas unless your electric price is less per kWh than about 3 x your gas price per kWh.
I don't think it will really heat for cheaper than gas unless your electric price is less per kWh than about 3 x your gas price per kWh.
Strike that, here's something I wrote to someone last winter who was asking the same question (before I had our panels fitted, so the only measuring device I could go off was the smart meter:
I can't exactly measure how much the air con is costing us in heating mode, because there is always the background draw from other devices. But the smart meter reported a peak of ~35p per hour over what was being drawn with the aircon not on.
It took 10 minutes to heat the room from 11 to 18 degrees. And that's even with the door open to allow dogs in and out and to share the warmth a little with the rest of the house.
So that cost me ... 6p.
I can't exactly measure how much the air con is costing us in heating mode, because there is always the background draw from other devices. But the smart meter reported a peak of ~35p per hour over what was being drawn with the aircon not on.
It took 10 minutes to heat the room from 11 to 18 degrees. And that's even with the door open to allow dogs in and out and to share the warmth a little with the rest of the house.
So that cost me ... 6p.
Soldato
I'm not sure that all the "No F-GAS installer" ones are dry break connectors anymore. I think there has been a bit of a change of the rules, I understand that small systems using R290 don't require an F gas ticket to install anymore as its basically camping gas, although there always was a bit of a disconnect with some of the other refrigerants.... I could buy a top up can for halfords for car AC, but I wouldn't be allowed to top up my conservatory aircon even if it was the same gas as the car.
From the site selling it: "Eco-friendly R290 refrigeration gas with zero ozone depletion potential (ODP)"
Interestingly enough, when I had the system in the conservatory installed (by an AC guy who did it as a barrow job for me), it was just purged with a bit of the refrigerant, rather than being vac'ed out and pressure tested with nitrogen as per the proper way. So even those with the correct ticket do sometimes cut corners
Soldato
I use mine as heat in a wooden cabin (it's well insulated), even when it's sub-zero it can get it toasty warm, 22ºC easily. It's by no means cheaper to run than gas central heating though unfortunately.
Associate
I haven't had my split system serviced since it was installed as I wasn't 100% happy with the firm that fitted it. They wanted what seemed an excessive fee to carry out the servicing but didn't give much detail on what a service actually consisted of.
Apart from giving the air filter a clean, is there much they actually do during a service?
Apart from giving the air filter a clean, is there much they actually do during a service?
Soldato
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I'm definitely not an expert, but the whole servicing thing seems like a bit of a con to me. I was quoted 100+vat if my memory serves, and the 5 year guarantee is only valid if you get an annual service, so a £1500/2000 installation needs an additional 600 spending on it for warranty.
They will check it for leaks and clean the condenser if needed and the filters.
Let's be honest though, it's not going to develop any leaks in the first 5 years realistically.
IMO it would be better to save the £600 and just pay for a repair if needed.
That is my thought @MassiveJim . Was something like 200 for a service to keep the warranty, I've cleaned out the filters twice a year and long as its blowing hot or cold it seems to be working.
Man of Honour
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No, all they ever did was hoover out the filters. These systems are very reliable and if they do go the money I’ll have saved from servicing will pay for the replacement.
That said, ours smell a bit mouldy now, so I do need to look at how we can clean them out better.
Think you can get anti bacterial treatments to go on the filter, but like car aircon best thing is just use it regularly
Soldato
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Im assuming most of you have wall mounts.
A service should be stripping the thing apart, cleaning the coil by use of coil cleaner, giving it a good rinse. removing the barrel fan and actually cleaning it. It’ll be covered in gunk, cleaning out the drip tray. The back of the unit if you look up with a torch behind the barrel fan will start to build up mould as well. Condensate lines should be cleaned and cleared as well to stop smells. Nice spray of easy fresh. Then onto the condenser, that just requires coil brush, then heavy duty cleaner with cosy/warm water. Should be an hour min on the indoor.
A service should be stripping the thing apart, cleaning the coil by use of coil cleaner, giving it a good rinse. removing the barrel fan and actually cleaning it. It’ll be covered in gunk, cleaning out the drip tray. The back of the unit if you look up with a torch behind the barrel fan will start to build up mould as well. Condensate lines should be cleaned and cleared as well to stop smells. Nice spray of easy fresh. Then onto the condenser, that just requires coil brush, then heavy duty cleaner with cosy/warm water. Should be an hour min on the indoor.