9 сағат бұрын
14 күн бұрын
28 күн бұрын
2 ай бұрын
Пікірлер
@asquithea 3 сағат бұрын
@BrendonUys ❤ your rant at 36:30
@RenewableHeatingHub 2 сағат бұрын
A good rant, and he's right.
@jezzaandrews1940 4 сағат бұрын
What I find strange, is that we are told that heat pumps arent a new product, theyve been fitting them for years, and the problems are all about the UK's heating fitters lack of knowledge! But if you look at the rest of Europe they predominantly fit buffers. A lot of manufacturers wont fit without buffers.So who are right? The knew kids on the block, or the rest. I was under the impression that a buffer will help with short cycling and also help with the defrosts, where most units, use the heating water to help. This extra volume will stop the house from cooling down as much. So any ineffencies with a buffer are outweighed by the buffer helping with longevity of compressor and when its needed alleviate some of the problems with defrost cycles, which arent discussed enough.
@lukerussell5674 Күн бұрын
Brendons one solution blanket approach is nonsense. There are so many different properties with different reasons to fit different system components including buffers happy to prove him wrong any time
@RenewableHeatingHub Күн бұрын
Are you an installer? If yes, would happily have on to share you insights and perspective.
@lukerussell5674 Күн бұрын
I am indeed I have around 1000 heat pump installations under my belt I have read the cibse heating design guide front to back I have gone through all the heat geek training and have built my own app on designing all things heat pump. I love the discussions and this channel is fantastic the views of all the top heating engineers out there are inspiring but for any one influential person to make these statements is a shame every property has potential differences even to identical houses on the same street can be totally different if the customers seek to achieve different things. All this one solution fits all guys are so obsessed with chasing efficiency and that’s brilliant but this is at the cost of comfort in a huge way. Having an open loop system is to ignore the uncontrollable variables in real world conditions where solar gain and exposed locations make it impossible to have a property at an even temperature throughout and these potentials can be mitigated with a buffer vessel and multi zone controls or sometimes just multi room controls and no buffer or sometimes it maybe fine with a single zone or sometimes dual zone and on and on and on the point is having a one solution fits all approach is wrong having an opinion that seems to be so linear in Brendon’s case I could put several design scenarios on paper that his view of no buffers would be the wrong approach. just to be clear I am not pro buffer nor against buffer I am pro education and taking time to sit down with my client in there building and develop a solution that suits themselves and there buildings needs and not presenting them with an efficiency boisterous single track view. Il leave it here but could go on forever. Love a good debate and keep up the great work. All talk on heat pumps is great for our industry
@lukerussell5674 Күн бұрын
I’m happy to talk more and share more views or thoughts if that’s something you would be interested in
@RenewableHeatingHub Күн бұрын
Please email me when you get a chance: [email protected]
@jezzaandrews1940 5 сағат бұрын
@@lukerussell5674Thank you👍
@pjay3028 Күн бұрын
23:05 I'm not entirely sure what is being said here about modulating pumps. Is it that an ASHP may have a modulating pump built into it and if so then the connected open loop heating system should also have a modulating pump built in to avoid the potential for different flow rates between what comes out of the ASHP and what is pumped round the open loop? Or was this point specifically aimed at non open loop systems? Thanks
@HVACEducationHub 8 сағат бұрын
ASHP with modulating pump is delivering water to open loop system. Usually all models today on market must have modulating pump. If buffer is installed as a separation, then secondary pump also must be modulating because fixed speed could cause a problem if not set up properly.
@MK-yeah 2 күн бұрын
I think these discussions could be really useful. However they seem to targeted at installers or "geeks". It would be nice to have simpler explanations and more diagrams. I have a buffer which includes a hot water tank inside, so a tank within a tank. The buffer is fed by an air source heat pump and thermal solar. The thermal solar goes through a coil. I am considering adding a third heat source. I am struggling to understand from your video how I would have this without a buffer 🤔 I have an old house with a high thermal mass, and a heated area of around 200sqm. The buffer has a volume of 500l and the hot water tank has 50l. It has 4 pairs of input/output connections plus an additional pair for the thermal solar coil. The heat pump is rated at 23kW.
@RenewableHeatingHub 2 күн бұрын
Thank you for your feedback. We’re aiming to keep these discussions as non-technical as possible, but you’ve raised an interesting point. In the coming weeks, I’ll be scheduling another session on buffer tanks, where viewers can submit videos and images for our panel to assess and provide advice. If you’d like to take part, please send us a question about your system and submit high-resolution photos and videos via WeTransfer.com to [email protected].
@BrendonUys 2 күн бұрын
Your system design does not suit a heat pump.
@peterpage7322 2 күн бұрын
Brilliant video, thank you, and very enlightening indeed. I have found it very worrying that most of the heating engineers I have consulted don’t seem to know enough about heat pump systems, so trying to find a good installer is like playing Russian roulette.
@RenewableHeatingHub 2 күн бұрын
You’re not wrong. You need to take your time and find the right installer.
@njipods 2 күн бұрын
What do people think about using a really large volumizer to let the compressor run for longer?
@Lewis_Standing 2 күн бұрын
Do you think they just want to sell an extra piece of kit?
@BrendonUys 2 күн бұрын
No, there is a lack of understanding.
@HVACEducationHub 2 күн бұрын
Great discussion, it was great for me to share experience and discuss. I think this format is excellent. As we mentioned few times in the podcast, design is the most important thing - with or without buffer. But simplicity will usually have better performance as it is easier to set up the system.
@RenewableHeatingHub 2 күн бұрын
Thanks for sharing your insights and knowledge.
@danwilden7073 2 күн бұрын
Great video guys, i wonder if you can help me clarify a couple of points? I read the MCS standard and I think it’s being misunderstood in this video, the requirement is 55% of the heat demand at a 55% flow temp, this means it’ll actually be a much larger heat than your implying. With heat pumps you capacity tables, most heat pumps won’t provided their stated kW output at a 55% at the design condition. I always wonder about cycling, as Graham is recommending putting in a a heat pump that covers 100% so theoretically it’ll be oversized as the boiler will pick up an element of heat demand. Would that not induce cycling? I’m assuming hybrids are being looked at as they will all use gas during the coldest parts of year and reduce the grid strain on electricity.
@graemeross1998 Күн бұрын
Most of the winter is between 3 and 10 degrees. The reason we fit a heat pump to cover 100% load is only if the customer has not wanted to upgrade the heating to a lower design of flow temperature and replace radiators. We set through the controls that the boiler can take over from the heat pump at external ambient of 3 degrees. The heat pump then shuts down so there is no cycling of the unit. Most of the work is carried out by the heat pump with a small margin taken up by the existing boiler. The house holder also has a full heat pump ready system for when they want to upgrade the heating and remove the boiler
@Dan.Wilden Күн бұрын
@@graemeross1998 Cheers @graemeross1998 thanks for clarity, The new MCS standard states it's 55% of the heat loss at the design condition. But at a 55 degree flow temp, this means that actually if the system was converted later down the line and the emitter sizes increased, for example at a 40 degree flow then it would actually cover a lot more than the required 55% I hope that makes sense, I truly think hybrids is the only way to combat the presence of gas combi boiler, as when they break down currently they are just being replaced with another combi.
@garrywhiting8398 2 күн бұрын
Brilliant contribution from Neil - suggesting UFH fed from return of higher temp rads in retrofit. Keeping it technically simple.
@JOOI525 2 күн бұрын
There is often a lot of theory discussed in Heat Pump conversations, with Neil and Brendon you get the impression they've been there, done it and got the T shirt. Agree completely, great balanced contribution from Neil.
@johnh9449 2 күн бұрын
Regarding cheap tariff energy storing - I only heat my DHW to 50°C at cheap night rate and set the temperature to 40°C during the day to avoid heating the water.
@upnorthandpersonal Күн бұрын
I'm off-grid, and use the same concept except: a) I use excess solar when I have it and use it to go as hot as I can and b) my buffer tank is really an energy store of 3000L, which both provides for the underfloor heating and hot water. I can easily store a day or two of energy to bridge a cloudy day without tapping into the 120kWh lithium battery.
@johnh9449 2 күн бұрын
How annoying - youtube just lost my detailed comment! 😡 Brief summary - I have a low loss header necessary for installer warranty (it keeps the heat pump happy with low radiator flow problems). Heat pump 28mm to low loss header was originally connected to my 22mm flow and return rails with 22mm but I pointed out this was a bottle neck and got them to upgrade and Tee in with 28mm. As a result I have zero distortion across the header so there's probably no need for it or the secondary pump either but removing it would probably only save 100W or so as the secondary pump is minimally loaded.
@RenewableHeatingHub 2 күн бұрын
Interesting. How have you established that there’s zero distortion?
@johnh9449 2 күн бұрын
@@RenewableHeatingHubBy measuring the IN to OUT temperatures flow and return across the header - the temperatures match so there's no forced mixing.
@FrankReif 2 күн бұрын
11:05 Modulation does come with an efficiency penalty. If a large system has to regularly modulate down below 50% during partial load, then it would be worth having two smaller units in an "array" or in "parallel" (for some reason we use the term cascade here in the UK, which is not correct) so that you can turn off a unit whilst the remaining one operates at a higher, more efficient, output. A buffer can be used to operate a larger unit without excessive modulation or cycling of the compressor, reducing COP loss. (edit Niel mentions this later) This becomes even more important with R744/CO2 heat pumps, as they like to operate at high output and really don't like cycling - more so than typical refrigerants. It's related to CO2 operating at higher pressures to exploit transcritical heat transfer, which allows for a single stage heat pump to work across a larger temperature range whilst maintaining good COPs. It's why they're used in DHW systems. Personally, I think we will start using thermal storage to exploit cheap time of use tariffs, where the COP penalties for operating at high flow/storage temps is more than compensated by the cheaper electrical energy, essentially optimizing for cost/unit thermal, not SCOP.
@RenewableHeatingHub 2 күн бұрын
Thanks for the comments and interesting perspectives?
@grahamcook9330 2 күн бұрын
Could I ask your panel the below questions for me, Thanks a) When UFH is installed below timber floors, how do they both protect the floor finish from overheating whilst also keeping the UFH circuits open at all times to maintain the system volume and flowrate. b) How do they balance the flow through the radiators to ensure each radiator achieves it's allocated flow. Do they just balance on temperature, use presentable valves or use rad manifolds with flow meters. c) It would also be good to hear their recommendations upon what level of training they give their clients, and what they expect their clients to do to fine tune the systems.
@BrendonUys 2 күн бұрын
+ Answers to your questions. a: Your underfloor heating design will specify a maximum flow temperature permitted to prevent floor coverings form being damaged. This temperature is set within the heat pump controller to prevent the flow temperature from exceeding this. All good geat pumps have this setting. b: It is nearly impossible to balance radiators with current equipment. at best it is a guess. There is a product that I have seen, coming to market shortly that will enable proper, accurate balancing of all radiates. It is critical for best performance to balance radiators to design, if you do not, the radiators will not perform to design. c: Personally, I use equipment that is user-friendly and intuitive, therefor user training is simple, however, this is not the case with all equipment, and some are very difficult. Maybe a question to ask an installer before purchase, to demonstrate the controller, or visit someone with a unit you are looking to purchase and get the impression of that user. I do not believe it is the responsibility of the user to delve into the system to fine-tune the heating.
@francisoleary7010 2 күн бұрын
I love how informative this channel is - it’s shining a light into the dark cavern of my ignorance, making me realise that I don’t know what I don’t know. I want to get an ASHP in the nearer future and it’s clear that finding a good engineer is much more important than the ‘right’ kit. I got a quote from Aira, and while I understood that it was a maximum which maybe could go down, the rep specified a buffer straight off before any heat loss survey, also some ‘minor’ repiping (I.e. some ‘minor’ lifting of floors). They guarantee the performance of the system (comfort, NOT running costs) and I guess that guarantee is conditional on acceptance of whatever their design is, buffer and all. Anyway I decided that even though the 15 year ASHP warranty is a winner, it’s more important that the system is optimised for this (challenging) house. These discussions are so helpful in improving my understanding of the issues.
@RenewableHeatingHub 2 күн бұрын
Thanks for watching. Your support is appreciated and we’re glad that we’re providing usable, useful information. Aira default to buffers, and comfort doesn’t always equate to efficiency as you’ve correctly pointed out. Our house is a good example of that. There’s absolutely no reason why a well installed heat pump can’t keep the house warm and comfortable with a minimum 3.4-4 SCOP.
@graemeross1998 Күн бұрын
Aira design every system with a buffer as it also helps preserve the unit and with the 15 year warranty it's their company way if you don't want a buffer you'll need to look at another company
@jambojambo313 2 күн бұрын
Great interview & all so knowledgeable. I’ll certainly take my time choicing the right installer even if it takes a year…
@RenewableHeatingHub 2 күн бұрын
Thanks for watching, and the key is to take your time and find the right installer. Good luck.
@Robertkennedy316 2 күн бұрын
Hello! Could you let me know what Heat Pump Brendan was referring to towards the end with a 14m useable head please.
@HVACEducationHub 2 күн бұрын
Panasonic
@BrendonUys 2 күн бұрын
Panasonic
@kenbone4535 2 күн бұрын
Buffers can work, when each side has the same flow rate=less distortion. If the pipework is sized correctly in the first place and alot of of open loop circuits. Then both buffers and extra volume vessels are not needed.
@RenewableHeatingHub 2 күн бұрын
Thanks Ken. Great to hear from you.
@MagicianMan 2 күн бұрын
I really enjoy these video's especially where you are able to get the "real perspective" of both installers and manufacturers about issues that continue to plague the industry. I would love to see Vaillant and Aira on here to explain why they insist on the installation of buffer vessels. Equally as important I would love to see many of the manufacturers discuss their reasons for specifying DHW Cylinders with internal coils the size that they are - I am looking at you Daikin!
@MagicianMan 2 күн бұрын
I believe the Daikin units can now operate with a 10'Dt
@RenewableHeatingHub 2 күн бұрын
Glad you like the videos and thanks for watching. I’ve emailed Aira so many times to come and they never commit. I’ll keep trying. As for Vaillant, I had a great meeting with them earlier this week, and they’ll be coming on the podcast soon, which I’m excited about.
@janetmorris6792 3 күн бұрын
Brendon should stop using an AI background it don't work properly, Waste of time
@RenewableHeatingHub 2 күн бұрын
I’ll have a word.
@BrendonUys 2 күн бұрын
Sorry.
@BrendonUys 2 күн бұрын
I will not use it next time, I agree with you, I only saw it when I watched the video.
@JOOI525 2 күн бұрын
I'll listen to Brendon regardless of his 'AI background', it's his 'real world background' that I find compelling to listen to. Great contribution Brendon as always.
@willeisinga2089 3 күн бұрын
I have a LG Therma V Monoblock 9 KW Heatpump. Makes less noise than a gasburner. Supersilent.👍👍👍🌞🌞🌞
@willeisinga2089 3 күн бұрын
Gaining Momentum. Since 2012 I have Solar Heatpump Inductioncooking No Gas no Energybill. 13 Years Now. I let a House same System. No Gas no Energybill. I have a new LG Therma V Monoblock 9 KW Heatpump on normal radiators. 3500 euro. Solar since 2012. Easy Cheap Warm Effective. Thank You for this video.
@richardbaron7024 3 күн бұрын
I’ve got a use case for this! My combi is three years old, and I don’t have space for a tank yet, and my rads aren’t perfectly sized but I can get away with having the rads at 35 when it’s about 7 outside. Where’s this grant?!?!?
@edwyncorteen1527 4 күн бұрын
When I had our combi boiler replaced with a heat pump, one of the reasons was the boiler was over 10 years old and beginning to "creak", I cannot think it would have been a good idea to keep it, I made sure our house was ready for aheat pump and have been very happy with the result.
@RenewableHeatingHub 3 күн бұрын
Great planning and execution, and thrilled to hear you’re pleased with things.
@stuartdyer9696 4 күн бұрын
Here's a Samsung HTQ 8kW defrost cycle in real time: kzbin.info/www/bejne/j4m5p4Vsdr6Spqssi=GByhsbOWP-jVAoAL
@RenewableHeatingHub 3 күн бұрын
Nice one! Worm’s eye view. Very funny!🤣
@colingrundy7223 6 күн бұрын
Which heat pump does the panel have please
@RenewableHeatingHub 5 күн бұрын
Graham is currently running an Ideal and Laurence has a RED. Not sure which heat pump Max has. Will ask him next time he’s on the show.
@logik100.0 6 күн бұрын
Going the efficiency route with my combi perhaps a hp later if I can put it on my flat roof. Cannot have solar (wrong aspect and space available) so really interested in a battery. Trying to work out the size needed. Any pointers?
@mamishami9820 7 күн бұрын
I need 10 hours of this sound to mirror back to upstairs, downstairs left and right neighbours, who even deny 💰💰they have a hybrid. It’s hell. And the vibrations make me sick.
@karencarpenter8275 7 күн бұрын
Are you aware that the forum site is not allowing new members to join?
@RenewableHeatingHub 7 күн бұрын
I see you’ve registered, and have approved your account. You should get automated email. Thanks for joining.
@karencarpenter8275 7 күн бұрын
@@RenewableHeatingHub ? I got the email but I don’t have a password? And the forgot password link doesn’t do anything?
@RenewableHeatingHub 6 күн бұрын
All sorted. Glad to successfully have you on the forums.
@karencarpenter8275 8 күн бұрын
Ovo aren’t offering the heat pump option any more
@RenewableHeatingHub 7 күн бұрын
Are you sure? I thought there was a flat rate still being offered.
@karencarpenter8275 7 күн бұрын
Nope. Not taking new customers at the moment. Our system is cascade and apparently our load can’t be measured so Ovo wouldn’t be able to offer us that deal anyway. Crazy that we can’t see our own load
@RenewableHeatingHub 7 күн бұрын
That is crazy… I’ll ask OVO to comment on this next week.
@logik100.0 8 күн бұрын
What about a hydronic fan convector?
@jonolake 8 күн бұрын
Any thoughts on Aira? Or do they fall under the be cautious as they're relatively new with a long warranty!
@RenewableHeatingHub 8 күн бұрын
I don’t know enough to make a definitive statement but your draw your own conclusions for this long forum conversation about Aira: renewableheatinghub.co.uk/forums/renewable-heating-air-source-heap-pumps-ashps/aira-heat-pump-stylish-scandinavian-heating/paged/28#post-41219
@hedleypepper1838 8 күн бұрын
Love the videos and your knowledgeable presenters and guests. But . The whole industry is a joke and needs to get into the 21st century. A 12 year old with an arduino and inexpensive screen could make a controller. And write the control algorithm with temp compensation.. Bluetooth to an app on your phone. Seriously a controller need not cost more than £100 including hardware and software development.
@RenewableHeatingHub 8 күн бұрын
Thanks for watching and for your comments. Sadly, I have to agree with you on the “outdated” controllers, but hopefully they’ll start to get better.
@crazykittenvideos855 9 күн бұрын
Thank you Cristian Slater but our neighbours new one is causing us bother as it is the vibrations in addition to the noise and the fact it kicks in and out during the night. They work harder when very cold which also doesn’t help.
@RenewableHeatingHub 9 күн бұрын
😂 Christian Slater 😂 Very funny! There are instances of poorly installed heat pumps that be noisy, and I’m sorry to hear this affecting you. Is it just the fan noise? Do you know what heat pump they have?
@crazykittenvideos855 9 күн бұрын
@@RenewableHeatingHub wow that was a fast reply! It is a Mitsubishi ecodan model. We are on very good terms with our neighbours and they are doing what they can to rectify the situation. I am hoping it is the install and perhaps new rubber feet for example could sort it. If faces our house and we feel the vibrations and noise in the night when there is no other sound around.
@RenewableHeatingHub 9 күн бұрын
This sounds like another dodgy install where anti vibration mounts weren’t used. How far is the heat pump from your property? We did an episode on noise on our podcast, it’s always a poorly installed unit that makes reverberation noise. Heat Pump Noise Nightmares? Here’s What You Need To Know kzbin.info/www/bejne/d5mvpGN8mbl_apI
@crazykittenvideos855 8 күн бұрын
@ thanks for the link. I’ll give it a watch!!
@RenewableHeatingHub 8 күн бұрын
Thank you. Regards, CS.
@JOOI525 9 күн бұрын
Another interesting discussion from the guys and agree totally with your opening comments about the legitimacy of the topic. As an observer from the side lines I can see that the hybrid option could be a solution for certain properties where for specified reasons (which I'm not entirely clear on) a heat pump alone could not meet the load. With the onset of high temp heat pumps available now reaching 'boiler like' temps it would suggest that the issue is having room for a cylinder?. If we are accepting that gas is still part of the solution, the other option is to produce a 'top up' boiler as it were, limited in size to just 3kwh or so, with the pure aim of only producing the top up required on the coldest days to assist the heat pump, thereby ensuring the heat pump remains the primary heat source. It's clear there is no one solution for all homes, but ultimately we have to try and find a solution which both limits the damage we are doing to our environment yet equally allows everyone the basic opportunity to keep their family warm at a fair and affordable price. - not an easy square to circle! Look forward to the next episode. Thanks.
@johnh9449 9 күн бұрын
I'm not keen on the idea of a hybrid. Firstly, any house that is currently heated with a gas boiler to an acceptable heat level can be heated cheaper with a heat pump providing the emitters have enough surface area to allow a low enough enough flow temperature. I can understand minimising disruption with old radiators etc but yes definitely size the heat pump so it can eventually take over entirely and bite the bullet with the radiators ASAP but that does sound like a recipe for never quite getting there. Secondly the point made about the heat pump running out of capacity in cold weather can be handled with a slightly larger heat pump - ok the SCOP may suffer slightly but surely that's better than retaining a gas boiler for multiple reasons. My hear pump is a little larger than ideal but my house stayed at 23°C when it was -15°C outside. A smaller heat pump may have struggled and only gained 0.2 or so on the SCOP. The biggie however is to compliment and power the heat pump with solar plus battery - which you can't do for a gas boiler. I really like your discussions. Have you seen the Heat Geek mini store made by Newark as a small hot water cylinder that works continuously from the heat pump - another reason not to retain a combi boiler in a halfway house solution.
@RenewableHeatingHub 8 күн бұрын
Thanks watching and for sharing your comments.
@dansus99 8 күн бұрын
My mums house is basically an huge air brick, you can feel the wind under your feet through the carpet and she refuses to do anything about. The rads are already pretty big 22's, which run at 55c. So a standalone heat pump wouldn't be worth the cost and hassle, but a hybrid system could be a good solution, tacked onto her existing gasser. Even if the bills are the same, at least its cutting down on emissions, and could take advantage of a HP tariff. She is getting on a bit now, and when the time comes, the new owners can whack in the insulation, and take advantage of the good stuff ASHP's can offer. Money saved can go towards a solar battery to bring further benefits.
@MrFlyby34 9 күн бұрын
Hybrid with an oil boiler? I don’t think so……… Grant never made a modulating oil boiler, was probably not worth the research when the oil price was low…..
@RenewableHeatingHub 9 күн бұрын
But there are some good modulating boilers out there from other brands that would do a decent job.
@MrFlyby34 9 күн бұрын
@ I don’t know but my 2019 unfortunately doesn’t. I also asked Grant directly about a setup for UFH and oil boiler in combination with a thermal store. They don’t sell buffer stores anymore. I really wonder if a oil boiler with ASHP with UFH would make sense, IMHO it doesn’t because it’s getting too complicated. I do believe in upgrading the insulation of the house and do a proper heat loss calculation and then design the ASHP system. Thanks and keep up the good work!
@RenewableHeatingHub 8 күн бұрын
Fair enough. All valid points. I don’t think hybrids have a place in every installation, but they could still play a role in helping homes in the UK transition.
@MrBobitsabc 9 күн бұрын
All very interesting. I didn’t realise that hybrids may become eligible for the BUS grant. Do you know when that decision will be made as to the grant conditions and amount of grant available and when it will likely be published ?
@RenewableHeatingHub 9 күн бұрын
That’s the million dollar question. No one outside the policy makers seems to know right now, but the announcement should come within the next 3-6 months.
@MrBobitsabc 9 күн бұрын
CHMM ?
@RenewableHeatingHub 9 күн бұрын
That’s the Clean Heat Market Mechanism (CHMM). It’s a UK government policy designed to encourage the rollout of low-carbon heating by placing obligations on boiler manufacturers to sell a certain proportion of heat pumps alongside gas boilers. If they fail to meet their targets, they face financial penalties. The idea is to shift the market towards heat pumps.
@MrBobitsabc 9 күн бұрын
PCDB ? What is PCDB?
@RenewableHeatingHub 9 күн бұрын
PCDB stands for the Product Characteristics Database. It is a database managed by the UK government that contains efficiency and performance data for heating products, including boilers and heat pumps. Manufacturers must have their heat pumps listed in the PCDB for them to count towards their CHMM obligations. The database ensures that only verified products with tested performance figures are considered when calculating a manufacturer’s compliance with the CHMM targets.
@davideyres955 9 күн бұрын
So a smaller heat pump and a boiler when the heat pump isn’t cheaper. This will be a good idea if they get rid of standing charge for gas. Then a heat pump can be designed for a lower outside temperature. The reality is that a heat pump is always more efficient than gas but unless it’s over 4 cop then it’s cheaper with gas at the current price. If you artificially increase the cost of gas you’re going to introduce poverty for no good reason and some people will be unable to afford an install so will inevitably end up cold or dead. Realistically the environmental impact of the change is so tiny it’s insignificant.
@KavanOBrien 9 күн бұрын
Do you have any plans to discuss with anyone within the heat pump world why there’s such a wide range of guarantees for the heat pump itself, from my limited knowledge I can gather some have two years upwards, I was very impressed with Ebac that has seven years , why so little years from most manufacturers yet Ebac are giving seven years , do we need a deerstalker and pipe to work out this mystery.
@logik100.0 10 күн бұрын
Space is an issue for me but am sure I can get a HP on the flat roof next to my boiler. I'm thinking of rather than a water tank I would use a sunamp electric water heater on an economy 7 electric tariff. Or would I be ok? Or better to use my 10 year old combi and go the HP / hybrid?
@graemeross1998 Күн бұрын
You get a sunamp for the heat pump it also has an electrical immersion and if you have solar can divert energy too the immersion in summer months
@ascot4000 10 күн бұрын
Hybrid, yes please. Ideal for my house but sadly we are south of the Scottish boarder so zero grant. We are a marginal case for a pure HP, needing a relatively large one but needing either a modulation ratio below current technology. Went for a full Vaillant system, latest boiler, HP rated cylinder, full weather comp etc and will be swapping a few of our 22 radiators as we go forward. We could have made it work with a small gas system boiler for those days when the (correctly sized) HP alone would be short. The other option was to have a heat pump that would be a bit too large, most of the time. Still had it all installed by a Heat Geek who shared my frustration that he couldn't see a way to make a HP run well in my home. Still got me pointing towards a pure HP future as technology and knowledge expands. A slower 'stepping stone' than personally hoped for but at least we are collecting good performance data for the future, rather than heat-loss guesstimates. Shame to see all the hybrid logic in the Vaillant go unused though. Gas standing charge is an obstacle or perhaps an opportunity. Perhaps limit or remove gas standing charge for winter use and enforce zero use the rest of the year. Year-round standing charge for those on gas only?
@logik100.0 10 күн бұрын
Can I fit an heat pump on my new extension roof? Its flat and will be up against half of sloped roof ie its around 1.3mtrs tall wall that is the vertical part of a pitched roof?
@alanbennett3812 11 күн бұрын
Excellent video chaps. Best one yet.
@AlanTov 11 күн бұрын
By the way Octopus provide Enphase solar batteries if you (understandably) don't want a Tesla badge around your house. I've found Enphase and their app Enlight very good.
@RenewableHeatingHub 10 күн бұрын
Thanks for sharing... I'll take a look at Enphase.
@AlanTov 11 күн бұрын
Obviously an EV is the 4th key element. Which is important in terms of tariff and in the not too distant future Vehicle to Home...
@RenewableHeatingHub 10 күн бұрын
V2H makes so much sense, and I don't know why it's taking so long to implement.