ASHP manufactures (NIBE vs Grant)
Looking for any advice around which ASHP manufacturer to go with. We are about to start a renovation of our 1930s semi. The renovation will be replacing all the radiators downstairs with underfloor heating. Upstairs radiators will be changed as needed. Part of the renovation will include installing underfloor insulation and applying external insulation to the side and rear walls.
We are planning on going with an ASHP over a new gas boiler for mainly eco reasons.
We have only found 2 MCS installers. The first recommends the NIBE F2040-12 (but would supply others if we pushed for it) but wont come out to do a site inspection without a £500 deposit. The other company only really supplies the Grant Aerona range but came out for free and I was impressed with the site surveyor. Not 100% sure about etiquette but happy to supply company names.
Given I am new to this technology I am finding it hard to compare and contrast the options. Does anyone have any thoughts about the two options above? I think I would prefer to support a UK company (Grant) if the product was on a par with either the NIBE or any other suppliers.
Welcome to the world of comparing ASHPs @tomguest. I have not been able to compare like for like - stated elsewhere.
Im sure they are both good products. For my particular home/solution I got Nibe, LG, Samsung, Stiebel Eltron, Mitsubishi and Daikin quotes. Nibe and SE were several £’000 more expensive. I was told they were “better” ASHPs. But looking at the data, I couldn’t see any better COP or SCOP. Better could mean more reliable, but you’d still have to pay for an annual service. So I ended up going with Daikin based on the installer and they offer a 10 year fixed price service and parts/labour warranty.
Elsewhere there is a list of questions to ask installers for you to gather information to come to a satisfactory conclusion.
FWIW I would say that Grant customer service is good (btw it is my review of the Aerona 3 on this site).
We've had some performance issues which eventually proved to be related to the design and installation of our system, not the ashp itself.
Although this has all been 4 years since the system was installed, Grant recently made a complimentary service visit to help identify the problem.
Getting the design and installation right is essential. An MCS certification doesn't guarantee that the installer really knows what they are doing.
Also, make sure you have a surge suppresor on your household electrical supply. Our rural location is prone to micro power cuts and voltage spikes which eventually blew the main PCB on the heat pump. An expensive repair. We now have a surge suppresor fitted at the fuse box which protects the whole house.
Thanks for the replies.
The company I think I will go with (Climate save renewables) are giving me a 10 year workmanship warranty, 7 year product warranty (standard on Grant) and 7 years free servicing.
I too am wondering this question - in this case Grant v Mitsubishi. The installer says Grant 'is the better product' which could be installerspeak for 'they make us more money'. They will do Mitsubishi if I pushed for it (and if the supplier has stock - not sure what the situation is).
I note the sound pressure levels on Grant are 7dBA higher, which is quite a lot. (installer said 'it's quieter than a washing machine' - I really hope so!). I need to do some more studying of the differences.
Generally I'm more comfortable with an appliance from one of the big A/C manufacturers - I've worked with A/C systems in ~50C daytime temps and only the big Japanese and Korean brands (plus Carrier) are up to it. I'm a bit wary of companies that really focus on gas boilers and suddenly develop a line of ASHPs, especially sales pitches like 'made for the UK climate' (without describing what that actually means in real terms).
Interestingly, I think I figured out that Grant are rebrands of Chofu of Japan - the diagrams in the installation manuals are identical. I'm not familiar with Chofu but I do wonder about long term support and parts availability.
@prunus, a valid point. Will that not become Grant's problem to get spares or keep them in storage? We've been in contact with all the big heat pump manufacturers and I've been incredibly impressed with Grant's all-round professionalism. Ironically, LG and Mitsubishi have been the worst. In the greater context that probably doesn't mean much, but I can see Grant dong more to support their customers than other Asian manufacturers.