ASHP install now?
Hi all, I previously posted about having a GSHP installed but having had a survey we were going to need boreholes which made the project far too cost-inhibitive. So I'm now looking at an ASHP instead. I have an installer who thinks they can get us in before the RHI scheme ends which would be good but isn't the be all and end all.
My concerns are very similar to what others have posted recently around electricity usage, but hoping to get some feedback! We are only just moving in so I'm not sure on the exact costs previously. The house is about 155m2, cavity filled walls, 300mm loft insulation but uninsulated slab floor. It has double glazing for all windows and a composite door. It currently runs on a non-condensing oil boiler. I think, even with electricity costs so high, that we would probably be saving money, or at least not spending more?
From reading the forums, it looks like it's key to get a good installer, but also to find the right settings for weather compensation.
Posted by: @swalkerHi all, I previously posted about having a GSHP installed but having had a survey we were going to need boreholes which made the project far too cost-inhibitive. So I'm now looking at an ASHP instead. I have an installer who thinks they can get us in before the RHI scheme ends which would be good but isn't the be all and end all.
My concerns are very similar to what others have posted recently around electricity usage, but hoping to get some feedback! We are only just moving in so I'm not sure on the exact costs previously. The house is about 155m2, cavity filled walls, 300mm loft insulation but uninsulated slab floor. It has double glazing for all windows and a composite door. It currently runs on a non-condensing oil boiler. I think, even with electricity costs so high, that we would probably be saving money, or at least not spending more?
From reading the forums, it looks like it's key to get a good installer, but also to find the right settings for weather compensation.
Your house sounds similar to ours although without a heat survey it's hard to know for sure. December for us was about 750kWh/£150 for heating. What's the heating requirement from your EPC?
Thanks for your stats @kev-m, if we ended up with something like that for December I'd be pretty happy. Having said that the heating requirement is 20800 for space heating and 3001 for water heating.
Personally I would be concerned about the credentials of said company. Given most quote to instals appear to amount to months before the RHI deadline so no pressure to get a job done. Now that time is getting tight it seems all reputable installers have their order books rammed full and are working flat out to complete in time. I’d be a tad curious as to how the company you speak of appear able to sort this. I urge GREAT caution before signing. There are a load of, incompetent at best, cowboys at worst out there. Ask yourself why so many installers have no spare capacity whilst some do.
Good luck.
Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.
2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.
@morgan thanks for the info (and concern!) Maybe I've been quite lucky but I've got two (from three asked so far) who say they have availability in time for it! They're both MCS and RECC approved so hopefully not cowboys, but I appreciate that it seems to be the wild west with some of the install stories I've seen.
One of them did suggest that certain vendors would be more difficult in the timeframe - I think he suggested that Mitsubishi would be tight, Nibe would be unavailable, but Panasonic, LG, Vaillant and Stiebel Eltron should all be available to order.
- 26 Forums
- 2,153 Topics
- 47.3 K Posts
- 50 Online
- 5,673 Members
Podcast Picks
Latest Posts
-
so which pump is running and is anything heating? &nb...
By JamesPa , 3 minutes ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@andris a great year - very happy with our system
By Profzarkov , 2 hours ago
-
RE: Mitsubishi Ecodan 11kw Defrosting Issue.
A bit of a follow up on the progress of the Ecodan pump...
By ThunderMink , 2 hours ago
-
RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
After our rather lengthy meander off piste, I thought I...
By GrahamF , 3 hours ago
-
RE: Midea ASHP – how to set weather compensation
@pash44pump - to collect the IAT/OAT data, can I sugges...
By cathodeRay , 4 hours ago
-
RE: Ecodan software update. Real or scam?
@vinz86 Contact Mitsubishi and an engineer attends and ...
By ASHP-BOBBA , 14 hours ago
-
My Samsung Gen6 (probably same controller as yours) onl...
By Old_Scientist , 1 day ago
-
@drei When I was in local government we were of cours...
By JamesPa , 1 day ago
-
RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
Sufficient system volume is also essential for ensuring...
By Old_Scientist , 1 day ago
-
RE: Boiling Mad: Exposing Radiatorgate
@rob-nezard you can see more of Drei's rad dramas here ...
By Mars , 1 day ago
-
RE: Flexi-Orb Heat Pump Scheme: A Game-Changer for the UK's Heat Pump Industry
As someone who has suffered from a Heat Pump installati...
By DREI , 2 days ago
-
RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
Hope they know what they're doing regarding paint types...
By PatrickVito , 2 days ago
-
RE: What crazy nonsense are inverter limits and why are they imposed?
I’ve also got a dual fuel Rangemaster. We originally ha...
By Majordennisbloodnok , 2 days ago
-
RE: Octopus tariffs - a quick comparison
@tim441 I’d agree wholeheartedly with that, with 2 x Po...
By Toodles , 2 days ago
-
RE: Electricity price predictions
@bontwoody Maybe one for @editor to consider whether a ...
By ChandyKris , 2 days ago
-
RE: is a home battery without an EV worth it?
You would think, but when I had my Powerwall 3 installe...
By Old_Scientist , 2 days ago
-
@mars That response surely deserves a nomination for Tu...
By JamesPa , 3 days ago
-
Specifying batteries, pv solar etc using ChatGPT
I thought I'd try to use ChatGPT to specify my requirem...
By Tim441 , 3 days ago