Last seen: Sep 9, 2024
About Me
Mechanical (Rotating Equipment) Engineer by trade.
Took a few years off to build my own house, wasn't getting what I wanted from builders so chose to actually build myself. Ended with a low energy input house and have learnt a lot on the way.
Key finding - when you start doing low flow temperature heating systems (gas or heat pump) the norms and convention do not apply and fights against you. Low temp heating systems require a higher flow rate, anything that hinders that, gets in the way.
Started with a thermostat in every room, actuator on every UFH loop, UFH mixing valve and pump. Then added a two port buffer to help, changed mixing valve on UFH to help cope. Nothing really made a difference until I simplified.
Then the light bulb moment - everything not required (thermostats, actuators, mixing valves, additional pumps, buffer) were all removed. If I had known at the start would have saved loads of money on parts and unnecessarily high heating bills. Over two heating seasons halved gas bill. Then installed ASHP, battery and more PV and reduced by a 1/3 again.
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Maxa i32V5 6kW ASHP (heat and cooling)
6.5kW PV
13.5kW GivEnergy AIO Battery.
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Latest Posts
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RE: Low shower pressure after ASHP retrofit
Most mixers uses a balanced flow i.e. the flow pressure...
By Johnmo , 2 hours ago
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RE: How Poor Water Quality Can Destroy Your Circulation Pump
Hi @Graham Brennand, Grant's installers don't seem very...
By AllyFish , 3 hours ago
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RE: Heat pump monitoring - what are you using?
The App gives you the CoP data, you can see instantaneo...
By Johnmo , 12 hours ago
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RE: Will heat pump heat hot water without increasing the temp in my home?
Certainly if you can get an inverter which will take a ...
By Judith , 13 hours ago
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Powerwall 3 - is it worth the outlay?
Hi Under the Eco4 grant, you may get PV and a heat pu...
By Profzarkov , 18 hours ago
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Security Update: New Password Policies Incoming
Over the past two weeks, we’ve been working to upgrade ...
By Mars , 19 hours ago
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RE: Switching tariff in Winter? or stick year round?
Being frank, I've known for a while that I could get a ...
By Majordennisbloodnok , 20 hours ago
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RE: Swapping back to Hive – is it the right thing to do?
I've just done the following. Dumped all thermostats ...
By Johnmo , 2 days ago
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RE: Aira Heat Pump: Stylish Scandinavian Heating
Yes, Vaillant. But Aira were willing to give me that if...
By IvanOpinion , 2 days ago
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RE: ASHP using its immersion, but I dont know why
Thanks @Gary - good idea. Ive just changed this setting...
By Tufty , 2 days ago
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RE: Home energy storage & battery register
ESS Smile G3 10.1 battery (awaiting a second to be inst...
By Morgan , 3 days ago
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RE: Time to Speak Up on OFGEM’s Standing Charges
@lucia excellent info about Spain. There’s nothing in t...
By Judith , 4 days ago
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RE: Renewables & Heat Pumps in the News
An interview with Gregg Jackson, well worth the 70 minu...
By Toodles , 4 days ago
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Enabling WiFi: Samsung ASHP on Smart Things App
Hi Just had the full works Eco4 install. Including a ...
By Anonymous 6140 , 4 days ago
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RE: My horrific Samsung heat pump installation and experience
@johnmacleod10 Hi @johnmacleod10, Yes , ma...
By iantelescope , 4 days ago
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RE: Grant Aerona 13KW - can I boost it?
Well ideally @johnmo, but I have a coupe of things that...
By AllyFish , 4 days ago
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RE: 6 Red Flags to Avoid When Considering a Heat Pump Installation
As @toodles says above. Basically you don't except as ...
By JamesPa , 4 days ago
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RE: Questions about yearly heat pump maintenance
You should have been left the service manual and commis...
By Johnmo , 4 days ago
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Latest Topics
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Powerwall 3 - is it worth the outlay?
By Profzarkov 18 hours ago
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Low shower pressure after ASHP retrofit
By jacs 4 days ago
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ASHP using its immersion, but I dont know why
By Tufty 5 days ago
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By Jeff 6 days ago
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LG Therma V Service in West Midlands
By jasehigh 2 weeks ago
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Primary Pump positioning for Samsung Gen6 system
By EcoBaker 2 weeks ago