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Hey Nick,love the video by the way excellent.have you done on any work with heat exchangers for use on outdoor swimming pools,I have a gas boiler and am looking to replace,but as with heat exchangers for houses,there is a lot of conflicting opinion out there?.

We have a Daikin, there is a filter to clean on the water side in the outside box. Our is 11 years old. We have also had an expansion tank replaced as part of a service plan.

Very interesting, am on waitlist for a survey with them for over a month so far, if I go ahead £100 will be on its way to you!

My Octopus Daikin 7kW was designed for 50⁰c@-2⁰ext. SCOP heating stated 3.4 and DHW 1.7. In practise we used weather compensation and have achieved 3.75 heating and 2.5 DHW. In Dec 22 we found house was too warm running at 50⁰c . Our weather comp is set to 50⁰c@-15⁰ext /27⁰c @18ext.

I've had an Octopus survey and need a 7kW heat pump. Like you I'm holding out for a Cosy, however, as I need a 7kW device I could be waiting a long time! Re solar diverter, I have an Eddi but I don't divert. I heat the water with gas at 7p/kWh and export excess solar at 15p/kWh. I'm on Agile and the Eddi knows what the half hourly rates are. When the price drops to zero it automatically switches on an heats the water.

Wish could look into the future to see the cosy6 outcome

I'm at a similar stage to you but need a Daikin 11kW pump. Noise calc to the neighbours bedroom means I need planning permission. I think Octopus could have helped more with necessary drawings and guidance on using the natiunal plan!ing portal. And of course they could use quieter heat pumps. Fewer than expected rad changes so I got them to throw in 2 years maintenance. I'd have got it anyway for piece of mind, £9pm is the cheapest on market too.

I am waiting on my planning permission. I was 0.1db over the MCS level of 42db. This is rounded up to 43db. Decision day is mid May.

Any heat pump with weather compensation switched on will lower the flow temp to deal with milder weather and improve the SCOP

I agree with you about the possibilty of algae and similar growing on that rough covering. Easy to get established hard to get out without chemicals.

@NicolasRaimo

Ай бұрын

We both assume it’s not injected with something to stop it I’ll get more off them about this soon

We've had three quotes from Octopus over the past few months. The first one was for £2,715.50 but was put on hold until we got an EPC for our house. That meant the initial quote expired. We got an EPC 'B' rating and then went back to Octopus for a second quote of £7372.80! Don't understand the difference and could not get a response from Octopus until Nick intervened on our behalf (Thanks!). Was then told to reapply for another quote after the end of April. This one came to £7017.63! How on earth does Octopus come up with such radically different quotes for exactly the same building?

We live in France and have an air to air heat pump. Daikin R32. It is serviced annually. They check for gas leakage and the correct gas pressure. The contract also includes emergency call-out priority. The two interior radiators are chemically cleaned to kill bacteria. This is not Legionella. There is no legionella risk as there is no water involved. For us the service contract is good value.

I'm about a month or two ahead of you, Nic. I have had an Octopus Daikin 4kW system installed in my daughter's newish (10 years old) 3 bed detached house in the midlands. Microbore (10mm) pipework to and from radiators, to a broader pipework core system. I was happy with the survey and install. Minimal disruption and the system is now in and running. It's quiet enough, and it just gets on with it. The cooler rads take a bit of getting used to - is it on, yet? (yes, it is). The total cost before BUS was around £8,200 (we paid £700!) HOWEVER.... What is the one, single number that all heat pump nerds talk about? Of course, COP! And this figure is NOWHERE to be seen on the diagnostic screen, or the app. Not nowhere. OK, there are some very crude and frankly suspect (rounded to the nearest kWh) energy use figures, so I *guess* you might be able to work something, but the numbers don't add up to me. The app should be bragging about the COP in large red letters, on the home screen. But no. Clearly, we are not in winter, now, but even last month on average the system (reports) consuming about same amount of energy each day heating water, as it does space heating. That's just nuts. Example. Hot water tank is 180L Let's assume it's FULLY cold at 12C, and the heat pump warms it to about 45C (33C rise), with a COP of 3 (pessimistic side). Then the electrical energy use should be (180L x 4200 J/C/L x 33C rise)/(3600000 J/kWh x 3 COP) or about 3.3kWh. Worst case! Totally cold cylinder. Yet the available figures suggest 17kWh on hot water alone, this month (1-6 May), some days when there has been minimal hot water drawn. I will take this up with Octopus on the post-install visit, but I've a feeling that the answer will be, "Yeah, that's how it is." BUT other than that, all good so far. But we won't REALLY know for 9 months... And No, we're not interested in Payback. I'm expecting it to be around cost-neutral. Instead, we're interested in doing the right thing, and doing a tiny, tiny bit to reduce our carbon footprint and maybe, ya-know, help save the planet 'n all. How do you calculate the payback of THAT??

@mattx4253

Ай бұрын

You not doing the right thing. Or saving the planet. It will never offset the co2 either. Only if you ignore all the embedded co2 in the production of the equipment you bought and scrapped. You basically spend £7000 of tax payers money which could have been used to feed and home someone homeless. I’m amazed people are so easily brainwashed in to thinking you are doing good. You aren’t. You are just jumping to the tune of the government and making huge profits for green companies selling lies. Also co2 isn’t a problem. It’s actually what life lives on and the earth has had co2 as high as 1400ppm and was totally covered in green.

I think you need to have a yearly service to qualify for the 5 year warranty.

@davideyres955

Ай бұрын

Seems fair but only 5 years does not given a boiler usually has 10. The main issue is spares after 5 years. No spares means new heat pump and no subsidy. That could be worrying. Because you could be looking at a substantial cost and the possibility of another company not wanting to cover the install.

@peterjones6322

21 күн бұрын

​@@davideyres955Why would Spares not be available after 5 years ?

Doesn’t the water temperature for showers baths etc need to be 60c to stop bacteria building up in the system?

@peterjones6322

Ай бұрын

You only need to exceed about 55 degrees once a week to kill the risk.

@Geordie023

Ай бұрын

@@peterjones6322 but if it’s set to 50c as Nick mentioned will it ever get to 55? or are the systems set up to do that automatically?

@NicolasRaimo

Ай бұрын

That’s for the heating which is a sealed system, the tank in the loft is for hot water it will be set to 50c but the system will automatically run a cycle at 60c once a week to kill bacteria 🦠

At what height are temperatures measured? Presumably it varies at different heights? I ask because we are old codgers who sit down a lot.

@NicolasRaimo

Ай бұрын

Why would temperature vary at height?

@keithgeorge7338

Ай бұрын

@@NicolasRaimo Heat rises, so must be hotter at ceiling than on floor? So would be different if you had thermostat 1 foot off ceiling or 1 foot off floor. Your young and running around and Maybebeing old I am just to sensitive to temperature difference. Cheers

@Etacovda63

29 күн бұрын

@@NicolasRaimo theres a reason the standard height for a thermostate is 1300-1500mm.

Need an annual survey for the cylinder, if it's unvented.

@NicolasRaimo

Ай бұрын

What does this do?

@jchidley

Ай бұрын

@@NicolasRaimo Safety checks are crucial for unvented cylinders because if they malfunction, they can explode. Therefore, they are equipped with built-in safety mechanisms, and additional ones are required during commissioning. Only certified individuals are permitted to install these cylinders, as mandated by building regulations. Proper installation ensures that subsequent checks are straightforward. EDIT: plumbers know this as "G3 Certificate"

Do Octopus still turn their nose up at Microbore? Ive been running our gas boiler at a flow temp of 50 for years with Microbore installed so I know it would be fine but I guess they might not agree.

@NicolasRaimo

Ай бұрын

Video about my microbore on last video

@axelc8611

Ай бұрын

Would be very wary about plastic micro bow a 10mm plastic microbow is actually even smaller would only go with 10mm copper

@NicolasRaimo

Ай бұрын

@@axelc8611 octopus have done many installs with plastic microbore, it can carry 1kw of heat per rad if fed from a manifold which mine is not

@axelc8611

Ай бұрын

@NicolasRaimo ah OK that's fine then it's just when I had my survey done by octopus last year the guy said they wouldn't do plastic but must have changed policy since then. I had to put a pause on getting one due to failing the noise assessment and planners saying it would unlikely to be removed I could have it further down the garden bur would require me digging a big trench through my lawn

@plasticcreations7836

Ай бұрын

@@NicolasRaimo Just watched that video. Need to measure my pipes then. Suspect they are the smaller ones (8mm?) but its only the pipes that go to the radiators and not the ones in the loft. According to heat geeks if you can run your existing system at 50 degrees without issue then it should be fine but sounds like that might not be good enough for Octopus. I'll check the pipe size and see. Although it all sounds rather complicated and I think there's only 1 (maybe 2) places the heat pump could go so depends on whether they will be ok or not.

I had a heat pump at my last house and when I asked about it being installed at the front of the house I was told not to as its easy to have it stolen.

@NicolasRaimo

23 күн бұрын

It’s an odd item to steal as required specialist skill to install, I see hundreds of these units on commercial sites

What are you going to do if the £7,500 grant is withdrawn before the Cosey6 is ready?

@NicolasRaimo

Ай бұрын

Where are the signs or indications that’s gonna be the case

@keithgeorge7338

Ай бұрын

@@NicolasRaimo Hi Nic. I wanted the Cosey so I could get a higher temperature if necessary, because we are old and feel the cold, so may need room hotter. From my conversations, Octopus don’t seem to think it will be available this year and I thought the grant monies were a fixed sum on first come first get basis?

Try claiming on the warranty, if the supplier goes bust

@NicolasRaimo

Ай бұрын

Octopus energy are the biggest energy supplier in the UK overtaking British Gas last week

@johnstevens282

Ай бұрын

@@NicolasRaimo Fair enough, however there may be a problem with the manufacturer. Availability of spare parts? If they go out of business

I wish I could get one of these low octopus quotes. Ours is £6665 after the BUS. I have no idea why it’s so high. Our house has an oil boiler (on the side of the house), which is the same place the heat pump would go, the pipes are sufficiently sized, the oil boiler is also next to the fuse box cupboard, so in my opinion its actually a pretty easy job.

@NicolasRaimo

Ай бұрын

Assume insulation isn’t to spec? Have you had a quote from anywhere else to compare

@NicolasRaimo

Ай бұрын

Ps I assume with oil your get that back in savings very very quick

@jamesg9592

Ай бұрын

@@NicolasRaimo Insulation is not great, but thats my responsibility not Octopus. I don’t think they get involved in that side.

@jamesg9592

Ай бұрын

@@NicolasRaimo Thats my hope too, the oil boiler is very old and inefficient and probably on its last legs

@NicolasRaimo

Ай бұрын

@@jamesg9592 they might be designing higher temp or more expensive heat pump plus rad upgrades due to that which pushes price up

£192 for my vaillant ashp service. Its a condition of the warranty.

** Rentcharge (Estate management) payers *** Something worth checking, if your on a new build estate which is managed by an estate management company (paying rentcharge) check with the estate management company as mine said I need permission from them before proceeding as drilling holes in walls for pipework is classed as a structural change.

@NicolasRaimo

Ай бұрын

I own my leasehold

I had planning refused for octopus install by my council like yours it faced the road and council would not budge its ridiculous and unfair but thats planning my council are full of fossils 😂

@Geordie023

Ай бұрын

Hopefully is regulations change as Nick mentioned they won’t be able to refuse you. 👍🏼

@NicolasRaimo

Ай бұрын

Fingers crossed it becomes a permitted development

Absolute rubbish...I love Octopus and been with them from the beginning as just received my Octopus Pioneer gift package as an early Octopus Go customer...but, I looked into this and to say the touted around £500 (Everything Electric Show) for a heat pump mantra as being disingenuous is an understatement....was quoted £15,000 but reduced to £7,500 with the government grant. Wow, are you serious Octopus 🤔...why would anyone with a perfectly working gas boiler upgrade to this, you'd need to be crazy or had hit the jackpot on the lottery...or are Octopus hoping a lot of boilers break down then some fever would hit you then you'd decide to buy this...I also looked into the Octopus 'Home-To-Grid' as have a Nissan Leaf and fit all the criteria needed except one massive admission by Octopus, the Wall box Quasar 1 is not sold in the UK 😂...it's so ridiculous it's laughable...why have they got this tariff promoting on their website is beyond me...I like what Octopus are trying to do but they're doing it in the wrong way by offering services which are realistically not ready and achievable, YET! 😅

@NicolasRaimo

Ай бұрын

Everyones going to get a different quote on HP its going to depend on your home size EPC and work needed as mentioned mine is well under £1500 which is CHEAPER than a gas boiler combi swap.

Plus you won't be paying the £100 odd gas standing charge, it's like the utility companies know we're going electric, gas is 30p ish a day and electricity is 60p? hmm I wonder why?

@NicolasRaimo

Ай бұрын

Standing charge set by ofgem

@andrewmullen4003

Ай бұрын

@@NicolasRaimo and why is it double for electricity?

@NicolasRaimo

Ай бұрын

@@andrewmullen4003 ask ofgem?