Heat Pumps: anyone have one/thought about it?

Jun 50.24 kWh
July 49.07 kWh
Aug 40.7 kWh
Sep 49.56 kWh

That's ours. Family of four.

Dec 22 we used 949 kWh that's with heating and the highest month over winter.
 
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The problem with comparisons is unless you can standardise them then they are as daft as comparing a 15 year old boiler and old tank to a combi in usage ;)

Last 7 days we used 25kwh of gas. That included some hob cooking, for two people.
Oh thats with my grossly inefficient system boiler and tank ;) Which is roughly 100kwh for a month.

I can only use the last 7days as a good estimate since with a solar diverter being used in the summer and lots of free elec from Octopus recently its the first 7 day spell of water heating by gas for months.

I think robj20 just highlighted the main issue, the water is pretty irrelevant, its the heating thats the big usage.
 
I used 18.93 kWh yesterday and I'm in bloody India so no idea how that happened (slight jest, the wife and kid are there). Maybe she left the hob on, 18.93kwh is double the typical daily amount!
 

Slightly off topic and I don’t mean to throw things off but… Not sure if you’re still paying that rate for gas but, if so, might be worth shopping around before your winter heating kicks in. My Octopus September bill has come in with a 26.16p standing charge and 7.18p/kWh.

Edit: I was going to suggest looking at the energy suppliers thread but, having just visited that, it looks to be full of heat pump discussions for the last few pages. We seem to have switched topics!
 
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Slightly off topic and I don’t mean to throw things off but… Not sure if you’re still paying that rate for gas but, if so, might be worth shopping around before your winter heating kicks in. My Octopus September bill has come in with a 26.16p standing charge and 7.18p/kWh.

Edit: I was going to suggest looking at the energy suppliers thread but, having just visited that, it looks to be full of heat pump discussions for the last few pages. We seem to have switched topics!

Appreciated but that was a previous tariff. I'm now on a fixed till Aug 2024 @ 7.34p/kWh and 23.08p SC.

I only used July bill as it was the last full month that was normal.
 
Last 7 days we used 25kwh of gas. That included some hob cooking, for two people.
Oh thats with my grossly inefficient system boiler and tank ;) Which is roughly 100kwh for a month.
All we do with our boiler is heat the water tank, 1h in evening and 1h early morning and mum cooks toast mon>fri and doesn't always use the oven for cooking and we used a lot more than that here hehe.

Our boiler is old though, about 10+ years and the installers did a crap job of fitting it and where they done the exhaust through extension roof it leaked.

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I think I done the math right because its not off by much
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Looks like install will not happen at my place, had the survey done and heat loss is at around 15kw, also there are a few rooms where additional radiator needed plus a ridiculous huge radiator needed for the hall way which is narrow wall and needed a 2m tall lol

Some good info from the guy around how to improve insulation but even if we do all that for them to do the installation we will need to add radiators to walls which there is non to begin with, we use our kitchen for cooking at lease twice a day so we never had radiator there but for them to go ahead we need 2 massive radiator in that room which I will accept but one of the bedroom there is an existing radiator at a window bay and it needed a radiator so big that it have a corner to it lol

I will look at Air to Air now and also wait for the final report and see what they say
 
Can someone give a clear cut answer of what pipe you need to measure, how to measure it to know if pipes need changing?

Can you just pop a set of calipers around a pipe and know?

That would be limit for me. If the pipe work needed changing. I know for sure radiators do.
I also wonder if my windows need changing, which also puts the ASHP idea out the window (lol)

Too much ambiguity to gamble, get it done, then find out need to spend 10-20k on top
 
Looks like install will not happen at my place, had the survey done and heat loss is at around 15kw, also there are a few rooms where additional radiator needed plus a ridiculous huge radiator needed for the hall way which is narrow wall and needed a 2m tall lol

Some good info from the guy around how to improve insulation but even if we do all that for them to do the installation we will need to add radiators to walls which there is non to begin with, we use our kitchen for cooking at lease twice a day so we never had radiator there but for them to go ahead we need 2 massive radiator in that room which I will accept but one of the bedroom there is an existing radiator at a window bay and it needed a radiator so big that it have a corner to it lol

I will look at Air to Air now and also wait for the final report and see what they say

Out of interest how old your house?
I have a similar feeling with ours that in kitchen (for example) would need a huge long radiator.
Even worse. The living room which would struggle to accommodate it.
 

Oh wow. Yeah that is very old.
Ours is only 2020. But the windows are dire. And many of the radiators are single thickness and quite short.

House drops quite quickly from warm to cold with no heating. I'm sure it's the windows. As they feel cold and around the frame/recess.

New windows are ridiculously expensive too.
 
I don't mind changing radiator to thicker ones or longer even but adding radiators to walls and tall radiator which we will need to remove hallway mirrors is just not worth it for now. Better just insulate the walls and install a few air to air
 
Oh wow. Yeah that is very old.
Ours is only 2020. But the windows are dire. And many of the radiators are single thickness and quite short.

House drops quite quickly from warm to cold with no heating. I'm sure it's the windows. As they feel cold and around the frame/recess.

New windows are ridiculously expensive too.
2020 and crap windows? Newbuild quality I guess!

Fwiw mine are about 23 years old double glazed and the seals had gone letting in air and I could feel it, I replaced all the seals last year and the air is gone, you shouldn't have to be doing it with such new windows but worth a check.
 
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2020 and crap windows? Newbuild quality I guess!

Fwiw mine are about 23 years old double glazed and the seals had gone letting in air and I could feel it, I replaced all the seals last year and the air is gone, you shouldn't have to be doing it with such new windows but worth a check.

Oops. I meant 2000!

Yeah the seals are poop. I've already replaced a few hinges!

Seals look a lot more faff. Or not too bad?

Edit.
This seems like it'll be easier than the hinges. Just had a tug on seal and looks like it'll just pull out of a groove. Assuming I can source a new correct fit could be as easy as just pulling old one out, wipe clean surface, pop new one in
 
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Oops. I meant 2000!

Yeah the seals are poop. I've already replaced a few hinges!

Seals look a lot more faff. Or not too bad?

Edit.
This seems like it'll be easier than the hinges. Just had a tug on seal and looks like it'll just pull out of a groove. Assuming I can source a new correct fit could be as easy as just pulling old one out, wipe clean surface, pop new one in
Yes very easy, you just need to get the right profile on the new seals and they slot right in. The old ones will be compressed.
 
Yes very easy, you just need to get the right profile on the new seals and they slot right in. The old ones will be compressed.
Mine have some quirky design. It's not a flat tube but more of a flap.
Not sure if you need like for like. Or just the bit you insert in the groove
 
Don’t forget air to water is not the only game in town. Air to air is also a very viable option, is used extensively in the states and is actually more efficient than air to water. Tepio heat stores offer viable high temperature solutions using cheap off peak electricity.

Hot water can be achieved using other means but in reality, most low energy/low running cost hot water solutions need a cylinder of some kind somewhere. I’ve seen people out these in unheated outhouses, garages etc so they don’t necessarily need to be in the house itself.
A mate of mine who lives in a new build in San Francisco has this setup. Air to air heat pump for main heating (although he says it's barely ever come on in the 2 years he's lived there), and a mini ASHP attached to the water tank in the garage for hot water.
He says it works well.
 
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