Last seen: Jan 8, 2025
Hello @lenny and welcome. It's hard to tell when it's late May but how is it so far? Were you given a walk through, manuals, instructions and so on?
I agree with you that normal cycling in itself isn't a big problem. IMO the bigger problem with an oversized ASHP (apart from them costing more) is t...
A typical oversized gas boiler with scalding hot radiators allows the temperature of the house (or parts of it) to be set back so that it is colder fo...
It was storage heaters and I did have annual consumption. But it was hard to compare the energy used with a modern, controllable system. The heat ra...
It was storage heaters and I did have annual consumption. But it was hard to compare the energy used with a modern, controllable system. The heat ra...
Don't forget to add a bit - at least 15% - for defrosts. And hot water. And make sure the manufacturer's 'size' is deliverable when it's actually col...
I agree. IMO the issue with older housing isn't the wall insulation; loft lagging, windows and doors should fix most and terraced houses are very wel...
@sunandair, @elab hasn't been seen on the forum since 1st May so I don't think s/he is worthy of any more attention!
Don't forget that an ASHP will spend 15-20% of its time defrosting when it's cold outside. And you'll still want hot water. 11kW sounds about right....
At least ASHPs keep running as long as you want them to. Imagine having an ASHP that stopped after using 30kWh and required you to faff around with va...
An adjustment in the relative prices of electricity and gas would be the most effective way to encourage heat pumps. 2.5 times would help but if elec...
Because it's being funded by taxpayers. If I'm going to contribute, through my taxes, to delivering a low(er) carbon economy, I want the best bang fo...
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RE: COP is not the only measure of efficiency
If that's the case then you are right to be sceptical, ...
By JamesPa , 6 minutes ago
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RE: Midea ASHP – how to set weather compensation
Agree entirely, in fact I think I made this comment and...
By JamesPa , 8 minutes ago
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Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
We’re pleased to announce that Havenwise are now joinin...
By Mars , 1 hour ago
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RE: Renewables & Heat Pumps in the News
To unpack this a little.... 1) how many of us in this...
By Lucia , 3 hours ago
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
@ashp-bobba Well done for stepping in where most would ...
By JamesPa , 4 hours ago
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RE: Who’s Caved and Switched the Heating On Already?
I have automated this decision. I have a heat pump with...
By jamespetts , 12 hours ago
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RE: Vaillant aroTherm Plus 10kW thoughts?
@realevil the fans and fan speed / coil size (height, w...
By ASHP-BOBBA , 14 hours ago
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@morgan this can just be done by your sepecilist when t...
By ASHP-BOBBA , 14 hours ago
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RE: Buffers, hot water and cooling
I agree it seems like a lot of work particularly as its...
By JamesPa , 15 hours ago
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RE: Anyone still weathering it out with Agile?
@toodles I guess it all comes down to import averages. ...
By Tim441 , 18 hours ago
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RE: 300 Liter Tank - Do I have to heat it all?
The size of DHW tank affects the anti-legionella cycle....
By Transparent , 20 hours ago
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RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
@scalextrix Name plate capacity
By HCas , 22 hours ago
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RE: Solar Thermal DHW and ASHP
I was originally contemplating a solar thermal installa...
By jamespetts , 23 hours ago
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RE: Solar Power Output – Let’s Compare Generation Figures
My system installed in July 2024 has produced 6.4mWh in...
By jamespetts , 24 hours ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
@judith thanks for your suggestions. Starting from col...
By GrahamF , 2 days ago
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RE: Inventor (Midea) Heat Pump short cycling advice
I switched to "fan coil mode" to be able to set water t...
By immunity , 2 days ago
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RE: DESNZ doing a survey which asks the right questions!
Without a survey their only source of data is probably ...
By JamesPa , 2 days ago
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RE: Can you help with our research: solar panels, EV chargers, home batteries, heat pumps?
Just done your survey!
By Judith , 3 days ago
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RE: Failing heat pump system - seeking thoughts on a rebuild
@cleardene-ashp just thinking about your issues here. Y...
By Judith , 3 days ago