Octopus Heat Pumps

NedS

DougMLancs said:

@michaels yes many manufacturers do seem to be reticent about publishing their modulation data. People’s observations/heatpumpmonitor.org data seem the best way. An 8kW Daikin appears to modulate down to 280W (https://community.openenergymonitor.org/t/performance-of-9kw-daikin/25243/23). My 9kW Panasonic I’ve seen as low as 200W on a heating cycle.

Is that genuinely 200W for the compressor, or is the compressor off at that point, and your seeing 200W usage for circulation pumps etc that are still running?

At 200W you'd likely be running at less than 10% compressor speed and efficiency will have dropped off a cliff. What sort of COP values do you see at 200W running?

Nick_Dr1

so to update, we have just had Octopus fit a heat pump to replace our oil system.
Install took 3 days and involved replacing 11 radiators.
Everything went well and happened on time. Quality of fit looks to be very good. All rads checked with thermal camera and are all working well.
Too early to make comments on efficiency etc but the hot water works fine! Nice to have got rid of the oil tank. (They don't remove the tank - you have to arrange that yourself, but they do remove the boiler.)

Spies

Had my survey done last Monday, ironed out a couple of things in the quote, they had spec'd the 8kw Daikin instead of the 6kw and a 500wx1800h radiator for the bathroom which was way over spec, they suggested I'd need to dig out for a soakaway when theres one right next to the heat pump also.

I have now signed the agreement, my EPC is due after Aug bank hliday which i arranged via nationwide epc for £65 which I'm told Octopus will deduct off the final bill and I used a youtubers referral code for £100 off the total.

They're replacing 7 out of my 8 radiators, Daikin EDLA06E2V3 heatpump and 150L hot water cylinder for a total of £1362 (£1197 after discounts).

FreeBear

Spies said: They're replacing 7 out of my 8 radiators, Daikin EDLA06E2V3 heatpump and 150L hot water cylinder for a total of £1362 (£1197 after discounts).

That is half what I paid for just a gas combi boiler install last year !
You got a pretty good price there.

stripling

Spies said:

Had my survey done last Monday, ironed out a couple of things in the quote, they had spec'd the 8kw Daikin instead of the 6kw and a 500wx1800h radiator for the bathroom which was way over spec, they suggested I'd need to dig out for a soakaway when theres one right next to the heat pump also.

I have now signed the agreement, my EPC is due after Aug bank hliday which i arranged via nationwide epc for £65 which I'm told Octopus will deduct off the final bill and I used a youtubers referral code for £100 off the total.

They're replacing 7 out of my 8 radiators, Daikin EDLA06E2V3 heatpump and 150L hot water cylinder for a total of £1362 (£1197 after discounts).

Wow! They've just quoted me a lot more than double that for the same 6kw Daikin heat pump, 4 radiators, 185L cylinder and the easiest install on the planet because no floors have to come up (I have a roomy stand-up cellar) and no pipe runs because the HP & cylinder are going back-to-back on the same wall.  🙁

john-306

stripling said:

Spies said:

Had my survey done last Monday, ironed out a couple of things in the quote, they had spec'd the 8kw Daikin instead of the 6kw and a 500wx1800h radiator for the bathroom which was way over spec, they suggested I'd need to dig out for a soakaway when theres one right next to the heat pump also.

I have now signed the agreement, my EPC is due after Aug bank hliday which i arranged via nationwide epc for £65 which I'm told Octopus will deduct off the final bill and I used a youtubers referral code for £100 off the total.

They're replacing 7 out of my 8 radiators, Daikin EDLA06E2V3 heatpump and 150L hot water cylinder for a total of £1362 (£1197 after discounts).

Wow! They've just quoted me a lot more than double that for the same 6kw Daikin heat pump, 4 radiators, 185L cylinder and the easiest install on the planet because no floors have to come up (I have a roomy stand-up cellar) and no pipe runs because the HP & cylinder are going back-to-back on the same wall.  🙁

Same for me, 5 rads to be changed nothing to come up, heat pump and cylinder back to back in garage where boiler is now. 
£4100 to pay on old EPC "D", reduced you £3300 as now classed "B". Extra £500 off on some deal that was on. 
Less £100 for referral code. 
Still way dearer than some I've read about.
Only problem now is I'll be over loaded when had survey on mains fuse, mainly down to having electric shower which is 40A in itself.

DougMLancs

Several other factors can change a quote though even if the headline looks similar. Some pipework may need to be changed out on one quote and not on the other, a volumiser may or may not be specified, one may need pipework moving for the new rads another just drops new ones in, someone may be quoted for 4 new K2’s and another 4 new K3’s (a 600mm x1200mm K3 is 2.5x the cost of the same size K2 on Stelrad). 

Reed_Richards

john-306 said:

.... down to having electric shower which is 40A in itself.

... which will cost you about 3 times as much to run than using the hot water from your cylinder, once you get that heat pump.

john-306

Reed_Richards said:

john-306 said:

.... down to having electric shower which is 40A in itself.

... which will cost you about 3 times as much to run than using the hot water from your cylinder, once you get that heat pump.

Trouble is at the moment the DNO won't approve the fitting of a heat pump as I'm above amp limit for my property.

Netexporter

john-306 said:

Reed_Richards said:

john-306 said:

.... down to having electric shower which is 40A in itself.

... which will cost you about 3 times as much to run than using the hot water from your cylinder, once you get that heat pump.

Trouble is at the moment the DNO won't approve the fitting of a heat pump as I'm above amp limit for my property.

But the electric shower will be redundant if you use the hot water from the new cylinder.