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Last seen: Jan 28, 2026
Thanks Toodles, hopefully I can get there. Does look like a lot of rad changes incoming however due to a complete mess up by the plumbers but will s...
So plumbers have sent over adjusted calcs……… This puts all rooms basically bar my office, the main bathroom and downstairs toilet at watt defici...
thabks toodles for the balancing tip, that’s definately got me further. When it hit 20C last night was a huge joy. Drayton seem to do themselves...
Thanks Derek, seems consistently the TRV side. Balancing with the Drayton key seemed to push downstairs up, just dropping living room 2 rads to 5/6 ...
Unfortunately can't see any indication. I've for now put Bed 1 on 3/6 using the Drayton tool, Bed 2 on 3/6 also. Bed 4 one is on 4/6 and one on 3/6...
For balancing, finding the order in which between upstairs and downstairs heat up is somewhat difficult to pin down. So approach I've taken was: ...
Just wanted to say a thank you to everyone on the thread again. Funnily enough ahead of the Drayton balancing key arriving tomorrow was watching...
Hi Ian, turned out just a production number, got it confirmed with Drayton. Rather confusing thing to have lol. Had hoped it was a eureka moment but a...
Rabbit hole over, Drayton responded that number is just a production number. Looking under TRVs I believe the flow rate is indicated by the number fac...
This shows difference between the landing radiator (shows a 6) which is performant versus the living 2 small radiator (shows a 3) Unsure what the ce...
thabks Derek it was actually that video that pointed me in the direction of Drayton TRV balancing as a comment in there observed little control with t...
This is what’s shown on the worse performing rad under the TRV balancing process found in this video:
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Latest Posts
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RE: Surface mount or bury primaries for heat pump installation?
The installation is almost done! I've written up two ...
By tomasmcguinness , 3 hours ago
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RE: Adventures in heat loss calculations
As others have said, well done, and thank you for posti...
By cathodeRay , 3 hours ago
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RE: Glass lined Cylinder for private water supply
This has turned into a fascinating little rabbit hole. ...
By Mars , 12 hours ago
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RE: Switch suitable to change between two inverter CT's
Last winter my battery ,32KWh, could run the house com...
By Jancold , 13 hours ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@rob-of-york Thank you for that, whilst familiar with t...
By kilgorexv , 13 hours ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Agree with Major. And even if I was very happy with ...
By Batpred , 14 hours ago
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RE: Is the "divide by 2900" rule still valid?
There is another estimator that you could use, a formul...
By Rob of York , 17 hours ago
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RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
@penval, really useful update. After all the discussion...
By Mars , 3 days ago
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RE: Who's your electricity provider and what's your tariff?
@papahuhu I prefer to look at it simplistically. We d...
By Old_Scientist , 4 days ago
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RE: Questions about A2A for heating as well as cooling
@rob-of-york I would concur with the underfloor insulat...
By Toodles , 4 days ago
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RE: New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
Nothing attached! I have rads but UFH makes the case ...
By JamesPa , 4 days ago
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RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 4 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
@rob-of-york Thank you, I’m thinking along these same l...
By Toodles , 5 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 5 days ago


