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ASHP vs GSHP
I haven't got money for either at this point, and realistically there are better energy upgrades I can do before getting any kind of heat pump Let's say you've got money for both. Which would you go for? I don't have the land to have a horizontal loop, but I can have a verticle loop which obviously adds to the cost It does…
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ASHP - Pipe size
Let's say you don't have good insulation Could you theoretically still achieve the same low flow temps with oversized pipes, and oversized rads? Obviously, you should insulate your house anyway, but I was wondering if you'd basically achieve the same COP without having done that? And then basically having pipes that are…
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Heat Pumps
Currently Octopus have a ‘ Cosy Energy tariff which looks beneficial to those with a Heat Pump. 2x 3 hours =6 on cheap rate, and 3 x hours on peak rate. The rest is on the standard rate tariff.
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ASHP / Ecodan / Melcloud - new owner
Hi everyone, Our new Mitsubishi Ecodan air source heat pump was installed yesterday, and all seemed fine. Woke up this morning and looked at the report to see it seems to have turned itself off? The Melcloud app says "the unit failed to respond to the refresh" and shows a graph suggesting it isn't speaking to the system…
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GSHP, Bypass and Buffer Vessel
Hey Guys - when my IVT HT Plus E7 was installed in 2009-10, the installer (my own plumber) added a kind of Bypass and as far as I'm aware - it's an old trick that plumbers have done for decades - left it half open. I guess this was for circulation pumps, so they're never circulating against a closed valve. I have since…
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Air Source Heat Pump for Garden Room
We have a garden room which we use as an office. The current system is powered by an LPG boiler via a 47kg propane bottle. It has underfloor heating throughout. The boiler is now 8 years old and has become very unreliable, with an internal leak now. Its also frustrating having to replace the gas bottles. We are considering…
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Cost of electricity a day whilst running air source heat pump!
Hey, so out of curiosity those who have a air source heat pump how much are you finding you are paying a day to run your electricity we have now hit £11 in the last week as temperatures have dropped to single figures and this is scary as it is only going to get colder and therefore higher bills. We have only had the ashp a…
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Air source heat pump problems
Hi all, Rather naively we recently moved into a house in the Highlands heated by an air source heat pump under the impression that they were pretty economical to run etc etc. Long story short a month in ,with the thermostat set at 17 it's costing us about £25 per day to run( about 50kw plus per day). For context we are…
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Ecodan ASHP heating not working
Hi As per the title, we have hot water but no heating. With reference to this thread (I've added spaces as I can't post links) https:// forums.moneysavingexpert.com /discussion/6402486 /mitsubishi-ecodan-ashp-no-heating/p4 I have checked: - desired temperature is set to 22 but it doesn't get above 16 - paused water so it…
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Cost to run a Air Source Heat Pump
Hi iam looking for some info on my ASHP if anyone can advise . I have a Mutsubushi / Ecodan ASHP with PV panels & UFH which i installed when i done a major refurb 2 years ago . I have been collecting data on the cost for over a year now to see what it is & how it compares to normal heating . I live in the postcode RM14 ,…
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ASHP question
Our Ecodan is set so that between 11pm and 5am the heating does not come on, nor the hot water. Yet almost every night something is humming away in the off hours in the vicinity of the water cylinder - anybody have any ideas what that could be? It's been happening consistently since mid-September when I changed the…
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Benefits of hybrid heat pump systems
Hi all, I wanted to share my bit of knowledge and experience on hybrid heat pump systems. This is when you do not need to remove your existing gas boiler, but pass control over it to a new heat pump controller. A small heat pump is connected in parallel with the gas boiler to your existing heating piping. The controller…
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Renewable Heat Incentive - add a new property heated by existing heat pump
Hi all, just want to see if anyone knows about how the following proposal would potentially affect ongoing eligibility for RHI payments. I've got a ground source heat pump with a maximum heat output of at least 22 kW, i.e., about the heftiest domestic model on the market. Even in the current chill I have set the compressor…
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Idiots guiide to best use of ASHP please!
Morning. I live in social housing and earlier this year had an air source heat pump installed which is great and works well. However I'm sure I'm not using it in the best or most economical way When it was installed they handed me the thermostat thingie and said control it with this. Which obviously works fine but may not…
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ASHP to Avoid from October 2022
Hello everyone, this is my first post here. I am applying for a new ASHP under the Green Home Grant (UK) and wondered what brands to avoid. If you have a new ASHP installed recently under the grant, do you have a say in what it will be installed? Including HW cylinder and possible radiators too. Does the installer just fit…
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Mitsubishi ecodan ASHP no heating
Please can anyone shed any light on how this system should work? I live in a social housing new build with an air source heat pump. Underfloor heating downstairs and radiator’s upstairs controlled by a typical wall dial thermostat. Heating & hot water worked perfectly fine when I moved into the property in March this…
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Government installed a heat pump in my house. Still getting gas bills. What happens if I don’t pay?
Hi, the government installed an airflow heat pump in my housing scheme rented house in the summer. But I’m still getting gas bills. No gas was used but the bills include the standing charge and “vat on the standing charge”… What happens if I don’t pay? If I just ignore it will the gas company eventually cut me off and let…
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Mitsubishi Ecodan ASHP - DHW & Heating questions
Hi all, I live in a 2019 new build that has solar, and a Mitsubishi ECODAN PAC-IF063B-E ASHP. Upstairs has radiators, and downstairs has wet UFH, controlled in all rooms by Heatmiser room stats. Upstairs has a single stat on the landing, with TRV's on the rads. I have had several issues with the system since moving in,…
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Air Source Heat Pump Question
Hi, We've had our Air Source Heat pump just over a year now, it's been working OK. I have heard that these have an expected lifespan of about 10 years - does this mean I would then need to reinstall a completely new system or would the old one be repairable? It seems like a lot of money to pay out (ours was around £13k)…
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How are you running your ASHP
Background first, ASHP just installed, looking to get the best out it now. First person up at 06:00, house empty most days by 08:00 till 13:00. Currently running it as water all the time and heating at 20c. Heating 6am till 7:30 am and again 16:00 till 21:30. At other times, it's set to 7c. I've had a quick check, water…
