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Last seen: Mar 3, 2025
Does your system pump hot water around constantly so you get quick hot water from the tap (secondary return) as this could eat up the hot water. Or...
@sunandair yes good shout. we’re planning on retrofitting the two rooms which are at either end of the housr i think lounge will get UFH so w...
My Ecodan isn’t the preplumbed variety so the primary pumps are just connected via a power cable to the FTC board. Therefore a fixed speed with no PWM...
Here’s my take. We have 30kwH of battery storage if we run the ASHP on it then it runs out by 10am. However that 30kw costs us 8p/keg so still kee...
It’s a beast! Some wiring changes pending and a cabinet for the batteries to sit in.
I did a breakdown of the costs during the last cold spell. the ASHP was only just a bit more expensive than oil. But cheaper than everything when n...
Ah this may make sense why my Ecodan struggles to maintain DT5 when at milder temps. The circulation pumps are either on or off so no modulation of fl...
@davesoa have a look at my previous posts. I did a calculation in the very cold spell we had comparing gas/oil/ASHP costs TL;DR: ASHP is cheaper...
Presume you've bled the radiators? Air might have got into the system during the service?
Agreed. Most efficient doesn’t necessarily equal cheapest to run.
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Latest Posts
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RE: Cooling with air to water heat pumps
A quick update. I finally found a 'solar' roller bli...
By springswood , 2 hours ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
85kWh of gas usage, divided by 24 gives 3.54kW and adju...
By Old_Scientist , 3 hours ago
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New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
I am feeling baffled and worried:We are having a an Aro...
By GutoFfowc , 13 hours 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 , 16 hours ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 16 hours ago
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RE: Questions about A2A for heating as well as cooling
@donciccio I would suggest that you take a "fabric-fi...
By Rob of York , 17 hours ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 1 day ago
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 2 days ago
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 3 days ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Swings and Roundabouts, you win some…. ...
By Toodles , 3 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 3 days ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 3 days ago
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 4 days ago



