Morning gents and ladies.

New member poached from Facebook 😅

Had a heat pump installed in November 2023 

Mixed opinions on how well it was done but it does work so that's good just don't think it's optimal and the circulation pump is annoying. 

Hope one day I can save up enough to afford to pay someone to come and double check it all and maximise its use. 

Have a great week

Burtis 

Hi @burtis Feel free to describe anything you're unhappy about or unsure of.

Being 'optimal' is a requirement stipulated in Part-L of the Building Regulations.

@burtis do you have a Mitsubishi Ecodan per chance?

  No... he's got a Midea MHC-V6W/D2N8-B, described here

🤗

@gary I've got a Midea unit it's a big old thing but seems to be running well we shall see this winter will be out first living in the house with it

@transparent Cheers buddy,

Well prepare yourself 😅

I've got a blocked radiator 

Small plastic pipes left in and old pipe re used when I paid for full new re pipe 

TRVs everywhere which isn't I problem as MCS require them I think but I don't need them.

I had a load of random new radiators I bought for when we had gas but decided to switch to heat pump when they upped the grant to 7.5k. So no idea if they are actually the ones I should have/need. 

Circulation pump in the loft is loud or something is loud

I don't think the external pipe work was insulated through the wall properly (hard to check now as it's sealed up)

Was never actually told the design temp till after install and sadly forgot about it till then 😕

I have a buffer tank which I know isn't a deal breaker but I believe I don't need it as all pipes are 15mm+ all bar a small section as mentioned above

But it does heat the house and hot water so it works just not 100% happy

Sorry for the lengthy post 😅

@burtis there's considerable overlap with the list you've just posted and points which we've discussed earlier this year in the (large) topic called Is this a bad installation...

See also the discussion which @editor started about Low-loss headers and buffers.

If you're able to, pick up the relevant points from your list in those two existing Topics.
That's where others are more likely to come across them in future.

Anything else on your list... you're welcome to start a new topic in the ASHP section.

Greetings and salutations to all.

First time newbie in the forum here looking to expand my knowledge of ASHP and Solar PV. 
Hoping this time isn't as bad as the first one we had installed, that was horrendously expensive and from what I can gather now way undersized for our old poorly insulated house.

Moved since then, currently live in the Cairngorms in Scotland, we've just been accepted for the ECO4 grant so will be getting our Bungalow insulated, ASHP full system installed as we currently have no wet heating, and full Solar PV system on top of that. 
To say I'm concerned about running costs is about right, but hoping the Solar and feed in tariff counter acts what we use.

As and when the install starts I'll document it and post photos as the job progresses.

@muckychimney Welcome to the RHF, we are all concerned with running costs I suppose and one of the first things to check after the system is commissioned is that the pump is set up with Weather Compensation - some installers are very suspicious of this feature but the use of WC may save you a considerable amount of money. Please keep us informed of progress and any questions are likely to be answered by very helpful and knowledgable contributors. Regards, Toodles.

@muckychimney As long as you have a decent install, your running costs should be lower than gas or oil, especially with the solar panels. If you can try to get a small (5kWh) battery installed or get an inverter that can take one later. It really helps utilize the panels to the full.

Posted by: @muckychimney

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hoping the Solar and feed in tariff counter acts what we use

These comments are pretty important!

I'll assume you know that the "Feed in Tariff" itself ceased in 2019.
So we're now talking about whatever export-rate you can obtain by choosing a particular tariff from an Electricity Supplier.

That's not a static feature, and not sufficiently reliable for you to use it when calculating your future running costs.

SSE Power Transmission maintain the electricity transmission grid in your area.
Most of it is operating at 275kV, but needing urgent upgrade to 400kV because of the surplus generation which derives from the hydro-electric generators.

By the end of 2025 there will be a new Regional Energy Strategic Plan organisation (RESP) for you, which is currently called "Highlands and Islands".

It is highly likely that consumers in that RESP area will be financially encouraged to pick up cheaper electricity when the national demand is low.
Equally, you will be allocated the lowest export tariff credits in GB.
Who wants to buy your electricity when there's an overall surplus in the region?!

The better strategy is to assume you'll export nothing.
That means you don't need G99 consent from your DNO...
... and therefore you're not constrained to a small inverter which can be limited to 3.6kW export.

Buy a storage battery which is larger than you're likely to need for your own solar,
and that gives space to import from the grid when prices are lowest.

Now have a look at this topic on Calculating Inverter Size.
That's where I've started providing advice and diagrams to @homonid  who is also at the planning stage.

I'd recommend you joining in with that topic because you require very similar information.

Just joined. 

We are in a 1948 semi in NW Lancashire. We had Solar PV and household battery install in 2017 from Moixa. Then my first BEV was a new VW eGolf in 2018. Had a EVSE installed, once the DNO had done their work - my luck that we were "daisy-chained" to next door. So a direct connection to the mains and 100A connection. Smart meters have followed. We have been on Eco7, Octopus, Agile and currently on Intelligent Octopus. In 2020, changed the BEV for a 1st Edition ID.3 and changed the EVSE to a Ohme HomePod. 

We have been thinking about household heating and hot water. We don't use the gas central heating much at all, we have been hardy. But the house is cavity-wall insulated, and double glazing all round. We had a gas combi-boiler back in 2002 - not condensing. Our gas use is for DHW and very occasional central heating.

So after much thinking I am considering the ASHP for heating and DHW. So here I am on the forum. 

Thanks in advance for all information,

Vince