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Last seen: Jun 26, 2026
I thought I would share this DIY split system air to air a/c install. This is an R290 propane unit sold by Appliances Direct after the buyer said he w...
There sure is, but it's not the most rewarding work going round sorting out other folks' cock-ups. If there's one thing I've learned on my domestic AS...
The refrigerant side of the ASHP plate heat exchanger is a condenser, superheated refrigerant gas in at the top, lower pressure sub-cooled liquid out ...
@dodgyknee - yes, Grant controller is a CH and HW thermostat. Not a very user friendly one, and very complicated to work. It's capable, with features ...
On the Grant system you can either turn the ASHP controller off, but that also turns off the timed hot water boost. Or turn the 3rd party thermostat o...
@iancalderbank Yup, tried that, but the tank maxes out at 55degC indicated on the cylinder. The immersion thermostat cuts in and it then cycles on tha...
@derek-m thanks. The immersion heater thermostat on Grant cylinders is pre-set to 65degC and it cycles on/off on that. However, the separate cylinder ...
Much of the struggle with ASHPs in winter is the defrost method. ASHP Evaporator coils have very narrow fin pitch, 1 to 1.5mm. That gives a large surf...
You may need a mains pressure regulator on the cold water inlet to your house. The pre-plumb cylinder inlet manifold has a 3bar pressure relief valve ...
This is interesting @sunandair. The basic weather compensation, relying solely on instantaneous outdoor dry bulb temperature, is crude. I've wondered ...
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Degrees of Separation
Latest Posts
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RE: Comms and power cabling to outside unit
@jamespa Thanks James. I’ll see what they say. I alw...
By Papahuhu , 5 hours ago
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RE: Vaillant Arotherm Pro vs new Plus
when our system was installed in September 2 years ago ...
By Judith , 5 hours ago
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RE: Rate the quality of your heat pump design and installation
I had a Heat Geek lead install by Green Heat Norfolk. T...
By Orlando , 14 hours ago
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+1 that works well If most of the thermal mass is in ...
By bobflux , 21 hours ago
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RE: Mitsubishi Ecodan FTC6 settings
While @F1p's dongles are great, the FTC can do this its...
By RobS , 1 day ago
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RE: Samsung heat pump - data cable issue
If it's a data cable, current will be minuscule, voltag...
By bobflux , 1 day ago
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RE: MCS Quality Audit – Has Anyone Had One? Did It Lead to Remediation?
I got hit with an RHI audit in 2022. It was far from c...
By Abernyte , 1 day ago
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RE: Electricity price predictions
@papahuhu Groucho Marx had something to say about no...
By Toodles , 2 days ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@jamespa haha very true, although the engineer yesterda...
By swwils , 2 days ago
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RE: What a difference a few degrees make.
Wow. Having accepted the challenge, I ran the cold tap ...
By Old_Scientist , 2 days ago
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RE: HeatPump maintenance in Swindon area?
@vince31 have you tried using our finder:/p>
By Mars , 2 days ago
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Looking for beta testers for a new homeowner heat pump tool
Over the past few months I've been building a brand new...
By Mars , 2 days ago
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RE: Indevolt Batteries UK Support & Info Thread
It depends on how you configure it via the app. The ma...
By JamesPa , 3 days ago
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