Last seen: Nov 4, 2025
@morganr Hi. Welcome to the forum. I've used 15mm plastic to all my radiators and have calculated the correct power rates based on actual internal d...
So assuming 45p per liter and 7 kWh per liter thats about 19,000 kWh per year for heating. Does that match with your EPC, it should state it as mine d...
@rocky-a Hi Rocky. Welcome to the forum. Just to clarify, any house can be heated with a heat pump, despite some of the stories you might hear that...
@pooneil thanks for the feedback. Good to know it worked out in the end and Homely functions well.
@jamespa That was my feeling, but I have seen it argued that oversizing does not cause significant inefficiency, so I erred on the diplomatic side 🙂
@johnnyb I believe the jury is hung as to whether an oversized heat pump is actually less efficient. I think most people though agree excessive cyclin...
@johnnyb Using the immersion wont improve the efficiency but if you can get cheap rate electricity it should be no more expensive and may even be chea...
@jamespa That's interesting James. Two other things occurred to me after my last post.The first is that all DHW cylinders include an immersion heater ...
The point about needing a legionella cycle at all and how hot the water needs to be if you use one. Its an interesting point that if people cannot a...
@johnmo absolutely agree. However I've had conversations with heating engineers who categorically take a different opinion 🙃
@johnmo That's fair enough. Although I'm not sure how that rule squares with having to use an immersion for legionella in addition to the heat pump.
Im not sure I follow why you are opposed to using an immersion heater for the very cold days? If the price using off peak energy works out to the same...
Latest Posts
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RE: Installer Fitted 9kW Instead of 11kW Heat Pump and Changed MCS Paperwork - What do I do?
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Agreed. It doesn't take all that much maintenance to ke...
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RE: My DIY Heat Pump installation
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There are two definitions of sufficient volume. The fi...
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RE: UFH downstairs and radiators upstairs balancing question
@ashp-bobba Can I pick you brain about mine ...
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RE: Flexi-Orb Heat Pump Scheme: A Game-Changer for the UK's Heat Pump Industry
Ok so that seems to be the key point namely only mcs ca...
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RE: One flow valve appears to be duff
You might want to consider the following common faults:...
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RE: When to use Octopus Intelligent Go tariff with my heat pump and battery
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RE: New build installation query
@paullacey While the others wait for more info do you m...
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RE: British Gas Heat Pump Installation Complaint
@bgno, the other consideration for legionella cycles ar...
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@old_scientist I dont monitor the tank temperature but ...
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