Last seen: Jan 13, 2023
Two weeks have passed since everything was commissioned. The ASHP has used 520 kWh of electricity so far, averaging 35 kWh per day (excluding the fir...
I've had my LG Therma V running for a week now. We have underfloor heating throughout. DHW is set to 50 degrees and water flow temp is set to 40 deg...
thanks @Mars - just watched it, and very interesting!
Our ASHP is finally installed 🙂 Because our house already had underfloor heating in every room, I was expecting the installation to be a relativel...
Tomorrow's the big day... installation! Yesterday, our energy supplier (Neon Reef) went in to administration, so we've gone from a 13p/kWh fixed pri...
HIES have responded to my email, I feel their response is actually much more informative than the response I had from MCS: First of all, I would s...
Their assumptions are listed in the heat loss calcs. I gave an example above about how their assumptions for the glass is different. It's the same fo...
I think this is exactly what's happened. All three companies have used different inputs for the wall insulation, roof insulation, glass heat loss, et...
Indeed, I thought the whole point of using MCS certified installers to provide a service was to get some level of guarantee that they do things correc...
I've updated the summary to show the calculated heat loss in watts and the heat loss W/m2 as per @Kev M's suggestion. Company A heat loss calculatio...
@editor Yes, please do. Thanks!
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Latest Posts
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@jamespa Agreed. I think it’s a case of much over muchn...
By Mars , 31 minutes ago
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@eliuccio Unfortunately, whilst I agree with a lot of...
By JamesPa , 59 minutes ago
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RE: Newbie out of her depth – Samsung AE120RXYDEG 12kW heat pump
@bami I think if the heat loss documentation matches a ...
By bontwoody , 1 hour ago
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RE: What is the best strategy for operating a very oversized heat pump?
@jamespa I'm afraid that's over my head but if anyon...
By IRMartini , 2 hours ago
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RE: Setback savings - fact or fiction?
And here in case any one wants it is the code I used in...
By cathodeRay , 2 hours ago
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RE: Samsung Gen 7 R290 12kW is not behaving how I expected
Definitely its in the 20xx FSVs. Conversely it may be...
By JamesPa , 2 hours ago
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RE: Towel rails. An unexpected final hurdle
We have both Normal Rad for heating the room and then a...
By IRMartini , 4 hours ago
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RE: Heat Pump Sizing & Installation Costs
Perhaps useful to have installed date too? To get conte...
By Tim441 , 6 hours ago
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RE: SolarPV tables / online calculator
I'd be interested what others find whilst using that we...
By Majordennisbloodnok , 8 hours ago
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RE: F.788 Building circuit pump reports internal fault - Vaillant Arotherm
Guess I have to wait for engineer visit. I really hope ...
By jeegnesh , 20 hours ago
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RE: Act now to defer the UK road tax increase on EVs
@majordennisbloodnok Damn right sir. my attempt at iron...
By Jancold , 23 hours ago
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RE: ASHP and heating issues in new build house
That’s good gives you more capacity. It made me think, ...
By Terry1812 , 1 day ago
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RE: Seewet manhole cover within r290 exclusion zone
Thanks! I asked Vaillant, and they say I should be fi...
By dbrb2 , 1 day ago
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Looking for the Grant Aerona 3 setting to turn off completely at 20 OAT
I'm running my Aerona 3 on WC and the 'warm end of that...
By damonc , 1 day ago
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RE: Do I just go with the lowest quote for my heat pump?
So after signing in Sept in two weeks the install may s...
By Jancold , 1 day ago
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RE: Victorian Semi Retrofit / Extension ASHP and UFH Advice
When you are renovating is always a good time, as it ma...
By JamesPa , 1 day ago
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RE: Just one room not reaching desired temperature
Looks like this issue is now resolved. Aira installed a...
By ChandyKris , 1 day ago
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There have been several people on the OpenEnergyMonitor...
By RobS , 2 days ago
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RE: Say hello and introduce yourself
Good point @jamespa But that probably strengthens @ch...
By Transparent , 2 days ago
Latest Topics
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Heat Pump Sizing & Installation Costs
By Mars 8 hours ago
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Volumisers in Heat Pump Systems: Does Placement Matter?
By Mars 9 hours ago
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SolarPV tables / online calculator
By MichelleC 16 hours ago
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By Toodles 2 days ago