Wet Air Source Heat Pump

Cocksure

Hi,
Does anyone have a wet air source heat pump and if so what are the electricity cost of running one, how long do they take to heat up the radiators, how hot do they get etc.

Basically I know nothing about them but quite fancy fitting one myself to try. So any information/feedback would be helpful. Currently planning on fitting a 14kw Mitsubishi unit if there any good?

Also does anyone know if you can link two units together into one system? It’s 240 square meters so the 14 kw is probably not large enough to do it all and a second unit might well be required if the 1st one works out. I just plan to do so many radiators for now and the remainder of a old gas boiler as needed

rhino2k

I don’t know a massive amount about these but have fitted 2 very large Mitsubishi ones to a school! (HVAC engineer)
This is not something I would recommend fitting yourself, as you will have zero warranty. Even the ones I fitted HAD to be commissioned by the manufacturer for warranty purposes and they are very picky. We also had to get another company in to do lots of flushing and put additives in the system.
Plus glycol had to be added by them and it is pretty expensive.

You could do all the internal work and get a company to supply and fit the outdoor unit plus commission it. In theory they should be able to offer you a good price as  they get good discounts and you only have to pay 5% vat to them for home use.

dannnielll

What is a wet air source heat pump?.  I know about air source heat pumps ..I have a Danfoss AX11 , I know about shallow geothermal.. actually solar wet brine circulation collectors,and I know about deep vertical bore collectors.. but wet air?.

Cocksure

Know it all

I meant a air source heat pump that then heats water which then heats your house, instead of the air to air system, meant air to water setup (that’s the term )

DOBLY

Hydronic is the word - ASHP to hydronic loop & / radiators.

danmc_82

I have an air source heat pump to heat my pool in the summer

Only a small pool but its alot cheaper than an electric heater. The COP is 4.9 which is pretty good for air source.

Underfloor heating is best used for ASHP which requires lower running temps. A well insulated house is also a bonus.

Cocksure

Nice

Currently looking into building a passive house at the moment so everything is on hold until I know one way or another with that. If I do get permission then it seems like the ideal product to use for the heating especially as I would like to fit solar panels as well (costs depending etc)

Delvey

Not relevant to yourself, but many new builds in Canada use this kind of heating system I believe. But electricity is quite cheaper over in Canada than the UK

ImOnlyHere4Beer

Hi guys, sorry to jump on the thread but we are having problems with our Nibe air drawn heating.
It was installed when we bought the house 9 years ago brand new, we just cant find anyone who will look at it close to where we live (Bath, SW England) if you have any ideas you can give me I would be grateful.

Cocksure

Have you tried contacting Nibe themselves? Likelihood is that they will have a list of improved installer or will offer a repair service themselves