Last seen: Mar 11, 2025
I've ditched the weekly 1hr Legionella cycle using the 3kW immersion heater fitted to a Grant 250L pre-plumbed cylinder. I was finding it ineffective ...
Sadly a very significant downside, turned out the 'too good to be true' HFO synthetic refrigerants like R1234yf and R1234ze were, well, too good to be...
Yes, I have the 'Home-me' (TM) integration system too. Similar set-up, stuff like Growatt Solar + batteries + Grant [Chofu] ASHP. All should just be s...
@matenateson it's good. Welcome on board! We have a modest 3.6kW 9 panel array on a house which one company dismissed as 'not suitable for solar PV' b...
Hello @davesoa, some things I would cross check between different heat loss calculation estimates, in order of greatest influence on heat loss estimat...
Hi @editor, a lot of damp is mis-diagnosed as rising. Often it is penetrating damp through the fabric, common in older solid wall properties in the co...
That could be the case, depending on where the triple rad is in the circuit. We only have one triple on a 20 rad system, which is in a conservatory. T...
Timber framing that is dry lined can be a very effective noise amplifier to anything fixed to it. A good analogy is a carelessly mounted bathroom extr...
With BESS the ASHP is best. Charge battery for free from solar, then run ASHP in HW mode for an hour = free hot water + COP advantage that direct imme...
ASHP noise from the outdoor unit should not transmit through solid walls and DG windows to inside. You would hear it through open windows however. If ...
@holts Ah, now that's revealing! UFH downstairs + 50degc flow temperature must mean the installers are planning to using mixing valves on the UFH ma...
Hello @holts, a weather compensated flow temp of max 50degC via an ASHP is going to have quite a poor COP and be costly to run. If you can limit the L...
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Heat Pump Dramas?
Thinking about installing a heat pump but unsure where to start? Already have one but it’s not performing as expected? Or are you locked in a frustrating dispute with an installer or manufacturer? We’re here to help.
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Latest Posts
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RE: Battery storage to run Heat Pump.
Im interested in that comment. I would like, and can...
By JamesPa , 6 minutes ago
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RE: Towel rails. An unexpected final hurdle
@davesoa No, unfortunately. I had to pay the VAT becaus...
By Lucia , 42 minutes ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@editor I have been persuaded by the argument that you ...
By SUNandAIR , 1 hour ago
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RE: SolarPV tables / online calculator
@majordennisbloodnok what degradation per year is typic...
By MichelleC , 1 hour ago
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RE: Who's your electricity provider and what's your tariff?
I watched it. I found it an interesting discussion but...
By JamesPa , 2 hours ago
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RE: Is it KISS or constant – weather compensation vs. set flow temperature?
Hi cathodeRay Can't pm you I haven't enough posts. ...
By cliffhanger , 2 hours ago
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RE: Setback savings - fact or fiction?
@cathoderay Whilst trying to do an energy analysis I lo...
By JamesPa , 2 hours ago
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RE: Daikin Heat Pump Cycling Frequency?
I think your current method of logging F-gas pipe tempe...
By Mars , 13 hours ago
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RE: Baxi Air Source Heat Pump tips and tricks please
@cathoderay thank you, I will.
By Cathyem1 , 15 hours ago
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Very sensible. Get the 'second round' quotes in, hopef...
By JamesPa , 15 hours ago
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RE: Looking for the Grant Aerona 3 setting to turn off completely at 20 OAT
Sorry, yes, 2105. OOPS! If I recall the unit circulates...
By AllyFish , 17 hours ago
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RE: Newbie out of her depth – Samsung AE120RXYDEG 12kW heat pump
No pressure or obligation, this discussion has moved on...
By JamesPa , 17 hours ago
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RE: Split system and pipe lengths for air source heat pump installation
@johnmo got it. Thanks.
By nickmorgan , 19 hours ago
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RE: Ecodan ASHP - How to optimise my set up?
Thanks everyone for posting this, so much useful info t...
By Bamnio , 1 day ago
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RE: Samsung Gen 7 R290 12kW is not behaving how I expected
I have the same pump and if I am operating it correctly...
By Broadsman , 1 day ago
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RE: What is the best strategy for operating a very oversized heat pump?
This whole discussion highlights just how much of a mes...
By Mars , 2 days ago
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RE: NIBE F2040 12 kW heat pump and 100 liter buffer tank
@cheshirejohn thanks for the update and for sharing. I’...
By Mars , 2 days ago
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@robs useful thread! Thanks for sharing - Octopus are c...
By big_si , 2 days ago
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RE: Heat Pump Sizing & Installation Costs
Perhaps useful to have installed date too? To get conte...
By Tim441 , 2 days ago
Latest Topics
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Daikin Heat Pump Cycling Frequency?
By Ubert767 14 hours ago
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Battery storage to run Heat Pump.
By Broadsman 1 day ago
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Heat Pump Sizing & Installation Costs
By Mars 2 days ago
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Volumisers in Heat Pump Systems: Does Placement Matter?
By Mars 2 days ago
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SolarPV tables / online calculator
By MichelleC 2 days ago
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Samsung Gen 7 R290 12kW is not behaving how I expected
By Joshua 3 days ago