Last seen: Mar 17, 2025
That's pretty good. I'm sitting around 920kWh for the last rolling month, but that's mains power. My solar PV contribution has been around 150-180kWh ...
It's a lot better than HIVE, which was cycling 5+ times per hour with me! Just leave it set to a high temperature and use climate/weather compensation...
@sirpatchuk1980 ASHPs work best when continuously running. Less wear and tear and better efficiency. The outdoor unit has in built stop/start cycle pr...
@sirpatchuk1980 (sorry @aceshigh) just chipping in. Looks like your Grant controller is hidden away with some of the pipework and system components. I...
Hello @sirpatchuk1980, welcome. Lots of useful info on here on how to maximise efficiency of ASHPs, especially retrofits. First things first, a bit of...
Grant do their Vortex oil boiler as a hybrid - basically an outdoor vortex combustion boiler plonked on the same base as one of their (well, Chofu's) ...
Hermetic refrigeration compressors are suction gas cooled, using sub-cooling of the refrigerant vapour. For most ASHPs, the compressor compartment is ...
That's interesting, but OFTEC is the oil fired technical association, and one can't help but feel this sounds like self-preservation? If there's adequ...
@cathoderay quite! It does rather complicate hanging a picture, etc. I'm hoping the system runs at SELV, but maybe not.
I like the thinking outside the box. Air source heat pumps are designed to take enthalpy (the energy state of outside air) at fairly low levels, trans...
The Grant low loss header is a decent bit of kit, but Grant bizarrely don't put flow monitoring and adjustment gauge on primary and secondary circuits...
@soniks I think they are sometimes not wired up on the Grant installs. Mine was, but I recall the installer saying he was not supposed to enable it us...
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Latest Posts
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
"I think it's highly likely mitsubishi don't switch off...
By Abernyte , 3 hours ago
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RE: Confused about Samsung Gen6 Hot Water Controller
Do you have the DHW on timed periods or on continuous w...
By DerekDeLeon , 6 hours ago
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If they arent permanently open then yes they would caus...
By JamesPa , 8 hours ago
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RE: What is the best strategy for operating a very oversized heat pump?
I think we are currently operating a weird mix of 2 and...
By guthrie , 8 hours ago
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We’ve had our heat pump (EBAC) since October, with a fe...
By Simon and Zoe , 10 hours ago
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RE: DHW temp Samsung AE120RXYDEG 12kw ASHP with Gen 6 controller
@Bami Ive had a look for the specs of your cylinder o...
By bontwoody , 10 hours ago
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RE: best approach for primaries?
Personally I would want them inside the heated envelope...
By JamesPa , 13 hours ago
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RE: help with new bathroom and towel radiator
I persuaded my installer that heat loss from the adjace...
By JamesPa , 13 hours ago
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RE: Grant Aerona fine tuning advice needed
Thank you pretty sure it's solar gain causing the incre...
By Stopbar , 14 hours ago
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
I fitted a Samsung 8kw myself on a new build with under...
By DerekDeLeon , 17 hours ago
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RE: Who's your electricity provider and what's your tariff?
@adrian it does look like they’ve updated their outgoin...
By Arundalep , 1 day ago
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RE: Heat Pump Sizing & Installation Costs
1970s 4-bed detached house approx 168 sq.m internal are...
By JohnR , 2 days ago
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RE: Is it KISS or constant – weather compensation vs. set flow temperature?
Away at present. Hence the delay. Will get back asap. ...
By cliffhanger , 2 days ago
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RE: Setback savings - fact or fiction?
The lower the DT the higher the flow rate. The lower ...
By BobTSkutter , 2 days ago
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RE: New kitchen with no walls – will fan coil units work?
Thanks. That explains the strangely-shaped 'feet' (loo...
By IanMK13 , 3 days ago
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RE: Heat Pump Books For Beginners – Bodge Buster & From Zero To Heat Pump Hero
I’ve updated Bodge Buster for 2025 to empower homeowner...
By Mars , 3 days ago
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RE: Aira Heat Pump: Stylish Scandinavian Heating
Aira, the Swedish, end to end manufacturer, system desi...
By KevinPotts , 3 days ago
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Unfortunately for your argument the best performing Dai...
By RobS , 3 days ago
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RE: Grant ASHP not reaching target temperatures
@mikefl Thank you. I’m not sure how to do these checks ...
By Hillswick , 3 days ago
Latest Topics
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Confused about Samsung Gen6 Hot Water Controller
By ntruby 7 hours ago
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help with new bathroom and towel radiator
By AdamK 17 hours ago
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Grant Aerona fine tuning advice needed
By Stopbar 1 day ago
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Adjusting 6kW Daikin's Weather Compensation Curve
By Ubert767 5 days ago
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Should I make my radiators smaller?
By Scalextrix 6 days ago