Great video. We have had an ASHP for nearly 3 years, and the thing a lot of people miss is how much warmer your home is compared to gas that most people run only for 6 or so hours per day. Accidentally I realised my Gen1 Nest thermostat had been harvesting my home temperature data for both the old gas boiler and the new ASHP so i have been able to compare the heat outcome before and after and the results are striking! I did a presentation to OVO smart tree house on this - I would be happy to share my extensive data with your channel should you wish.

As a 15 year installer of heat pumps, you have already addressed 90% of the FUD (Fear, Uncertainty, Doubt), before we have even hit half way through this video.👍

My heat pump (fridge freezer) has worked perfectly fine for decades! :)

Anyone think the cats are planning stuff together. They keep popping up on various YT channels that deal with EVs and related stuff. Btw, I have a cat so am perfectly fine with that.

Nice overview. We are in the process of getting an ASHP and have started upgrading our rads as recommended by the heat loss calculation. I’ve done 4 of the 10 that needed beefing up to run at 45C and below.

Don’t forget the savings in the gas daily standing charge so you’re saving over £100 in addition to the gas savings.

Here in Denmark, where gas is counted in m3, which contains the same amount of energy as 1L of oil (about 10.3 kWh), we replaced our 15 year old Vaillant gas boiler with a Vaillant 7 kW heat pump (same UniTower system as you). We spent 4482 kWh on heating from march to march, priced at 0,15 GBP/kWh, to total price for a year was around 672 GBP. In previous years with gas we used between 1300 and 1600 m3 of gas, which cost between 1 and 2 GBP / m3, so lets say 1,5. 1450 m3 of gas times 1,5 is 2100 GBP per year for heating with gas. So even without solar panels, we’re still only paying around 1/4 of our old gas bill. The same also goes for the EV, which so far has cost around 1/3 of what we paid to drive the “old” diesel car. Doing the reverse math, 1450 m3 of gas is 14935 kWh. Divide that by 4482 and we get a COP value of 3.3. That’s the efficiency our heat pump has been running at during full a year.

Great video. Keep spreading the word.

A brilliant video, thank you for posting this.

Great video Andy.

Another good Video on your Heat Pump.

As always,brilliant,simple FACTS,every one is different.

Thanks for a very informative video. And sharing your numbers. An indication of the house type and degree of insulation would be icing on the cake.

Another great video, lots of information.

Wow! Thats amazing. Superb running costs.

Great informative video Andy. What make us your HP, how many bedrooms/floor area is your house and what’s the HW tank volume?

A mate of mine has a Heat pump in a 400 year old stone cottage. Nice and warm inside with underfloor heating and a new well insulated roof. So they work well if they are designed correctly. Hafod in north wales did a top job

Firstly, thank you for this detailed cost analysis. I have few questions: 1. How many people take shower/day? 2. What temperature do you keep in the hot water cylinder? 3. Which company installed your HP? I am seriously considering the HP. I have 4KW PV, PW2 and EV6. I also have Octopus day/night tariff. I think this justifies to have the HP installed. Thank you.

Nice cat😂 I am an heating installer in the northwest and currently doing my heat pump/ solar thermal qualification. Glad to see some positive heat pump videos. Great infos thanks

Thank you for the video!

Thank you for this very informative Video. We had the same Vaillant ASHP installed in April this year and are approaching our first winter with it. One thing I did notice in your data though...you seem to be using quite a lot of electricity for hot water...🤔 I know the Unitower isn't as efficient as it could be (we have it as well) but it still seems high to me. What is your tank temperature set at and are you using the standard Vaillant legionella cycle?

Those are very useful numbers, thanks for sharing. I am seriously impressed. I am heading in the same direction as you. I have Intelligent Octopus, I've had solar panels for 9 years, batteries for 7 years. Just upgraded by batteries so I now have 18kWh. Once I've run through this winter I'll be looking at moving to a heat pump on the basis it will run almost always on free or 7.5p electricity.

a valiant effort

Great video... Thanks for sharing 👍

Absolutely great point about "how long to pay back" never even considered it from that angle

Thank you for your detailed videos like my electric car journey lots of negative nelly''s who haven't researched but rather read the Daily Mail...... Your videos are very useful.

I watched your "ad" for your sponsor with great interest. Why? Because you were NOT reciting their advertising info. The way you presented "YOUR" info on the product(s) was, IMHO, FAR MORE EFFECTIVE. I think, therefore, that the sponsor is getting far more "bang-for-the-buck" than from those other sponsorships with BORING info recitals. [I always FF through them.]. Good work!

Ty, nice "Freezer" in background.. 😁.

Hi EVM. Great video as always. I love your Yorkshire dry sense of humour. One question for you - in winter how much max electricity (kWh) would your heat pump use in a day. I’ve got solar + 16.8kWh battery and want to know if the heat pump could run off the battery all day. Cheers, Roy

Ok, but considering all of those other tweaks that you mentioned. I.e. solar panels, batteries, optimized gas system, etc. Best and most accurate, easiest test would have been to compare a year of gas vs a year for heat pump... assuming minimal price changes from one year to the other. Agreed... real world comparison is not easy.

Thanks for the update. I have solar and batteries (18.8kwh) and electric car. Heat pump is next on the list. You might also be interested in Ripple energy shares as this will drop your bills even further. I have Kirk hill and Derr il water shares .

Great video ! Have you thought about revisiting the battery storage savings again now prices have gone up ?

Interesting video thanks. Goes to show electrification is the way to go if you go all in. Our ASHP costs more as we don't have variable tariffs or a battery but my 16kW ASHP is using around 2200kWh per year...Could you give a kWh/SQM especially for space heating?

Great video as ever Andy....all my favourite video channels keep getting cat bombed lately! Loved Homer's purr, had two cats for nearly twenty years, only after theyd gone did i discover they gave me asthma! I do miss them but we rescued a lurcher having had another rescue dog before him. I can report that its like having a cat with the purr exchanged for a song (howl!) 😂

Great video. Shows that this is the way to go. Also, your point about choosing the right installer is spot on. Lots of idiots spouting lies who have no idea about how to install heat pumps trying to push false narratives.

Great video. However, I think it perfectly highlights the problems with heat pumps as it stands and why they will not be adopted unless things change significantly. You are the best possible case for a heat pump but from a cost perspective it is still marginal compared to a gas boiler. 1. If you were paying the current price cap of 27p/kWh your annual bill would be circa £930 - the same as gas. -This is despite having a modern house and an optimal installation, as proven by the scop. 2. A tiny minority of people have the ability to buy cheaper electricity so it will never make financial sense. Why would somebody spend an additional 5k they probably dont have just to keep warm vs a gas boiler? -It cost you (at a guess) an additional £4-5k for additional battery storage. If you add this into the calculation (amortised over 10-15yr) it costs more than gas (despite being an optimised installation). 3. The ROI comment is interesting, but it is very relevant because option 1 (gas) cost circa £3k and option 2 (heat pump) cost circa 8k (even with a 5k grant!). There needs to be an ROI on the 5k for the people who can afford it to compel them to do so. If there isn’t a positive ROI there is no point spending the additional money (all other things being equal). By comparison solar panels make more sense and have a healthy ROI vs doing nothing. Having said that, they still dont give an ROI as good as simply investing the money in a typical S&S ISA. There is a lot of propaganda spread about heat pumps (noisy, unreliable, don’t work etc), but the real underlying problem is the economics dont stack up even in favourable cases. Until the economics problem is addressed they will forever remain a luxury gadget for heating.

Great video. I have many people always telling me they don't work and when I point out that we have one in a 200 square metre 220 year old stone house they don't believe we are warm enough. Last year Jan Feb and March cost us just for heating and hot water 400 quid on a 20p all day tarriff and that is far cheaper than how much oil we used previously. We are very happy and like you i do keep tweaking it. Also a big difference was fitting low e glazing units as ours were old original sealed units. That only cost a 1000 quid to do the whole house. I've given up telling people they work in all properties you just have to use them correctly

Very informative and a great example of how investing in your system makes your house cheap to run. However I'm sorry to say that I thought Homer's contribution was the best. 😊

Here’s a comparison. We live in NZ, we are fully electric, heat pump hot water, 2 EVs, 3.5Kw solar. Total annual consumption 5310 Kwh, cost $1075 nz. Eco house but not passive. No C/H ( not needed here) but 3 split aircon units for heating and cooling. TOU tariff which we use with one hour of power free each day.

Thanks for the video, all good information shared. We have just had a quote for an Octopus supplied Ashp water cylinder etc at 4.5 k which we like but interesting to see how many have much lower Octopus quotes…. I have to assume they do not include the hot water tank as iirc that was one of the pre quote questions. Just want to get rid of oil !

Great video, very informative. Can we have more of the cat?

Hi thanks for the video. Can you tell me how big your water tank is and how many KWh used to heat the tank on a given day? Also how much does 1 hour of heating consume on average. Thanks

Very interesting, we had our heat pump installed in July. We have solar, but no battery yet.

A great video as ever. I have 9.6kWh battery storage. I am trying to work out how much more battery I might need if I get a heat pump. Octopus have quoted a 4kWh heat pump.

At last, you have answered the question I've been asking for months - what is the lowest/average power consumption demand from a 5 kW heat pump. "200/300/400w" excellent, thank you! - this is what I need to know to size my home battery. All the spec sheets tell me the maximum output which will only be about 3% of my yearly heating cycle.

Very informative, doesn’t the car charger have usage data

Great video. Would you recommend getting solar with battery before a getting a heat pump installed? Or which is better to get done first? Thanks!

About to get a ASHP installed (have battery already) wouls love a video on how best to configure the ASHP ie how often run etc. I'm currently on gas boiler that's on for 2 periods a day except when really code then keep on all day (typically off over night)

Your figures do add up with the kwh, if you can maintain the efficiency curve you can sustain 300-400% efficiency. Pretty sure you can check the kwh output on the heat pump

sorry if I missed what was the price of the heat pump or the difference from a gas boiler to the heat pump

Thank you for your information video

I've had a heat pump since 2009, and yours seems to be a lot more efficient than ours. Or perhaps your house is better insulated. Our electricity use (pre ev ) ran at between 10-12000 kWh (for the whole house). We've done something big regarding insulation this year, so I hope that will fall.

Maybe good to highlight that you stop paying your standing charge for gas as well. Very good video, putting the data across in a pretty easy to understand video.

Hi EVM, how much in general would you use daily for the heat pump daily during winter. I'm trying to understand how much capacity is needed on the battery to power it during winter days.

I am in Australia, we use a heat pump year round, but obviously lots more for heating....but we heavily insulated before puting it in our new home for efficiency.?.we have put in an approx 7 kw system by Mitsubishi Heavy Industries. Love it❤

Thanks for the video. One thing not mentioned is the cost of a service and the intervals. Obviously a gas boiler has less moving parts and generally just needs a clean once a year.

Well done

Hi. I’ve had a heat pump installed and would really appreciate a broad comparison of electricity consumption. I’m a big of of this channel and this was one of the main reasons I went with an ASHP. My system is a Vaillant arotherm plus 7kw. It is a hybrid system with an 18kw gas boiler. 45 litre buffer tank. My house has 6 bedrooms over three floors, 20 rads, approx 230sq/m and the heat loss was calculated at 8.6kw. The design temp is 50° so the ASHP will struggle at 0° as it bival point has been set at 2°. Last month the ASHP consumed 1000kWh. It was a particularly cold month with some days around -5°. Also, the ASHP had a loud buzzing when it was very cold. Vaillant have changed the compressor but the day they changed it, it was around 0°. There was still an annoying buzz and the engineer told me that’s normal. Unfortunately nobody has posted this ASHP operating in very cold weather and I’m trying to understand if this is normal? What’s people thoughts? Thanks

I love your videos as they influenced the solar set up I have, but can you provide some figures on hourly electricity consumption of the heat pump please? I’m also on octopus intelligent and trying to work out if I need a larger battery.

Our SCOP is higher in the summer because we are heating water to a higher temperature than in the winter for heating. Overall figure for the year is 4.4, but ground source not air source.

8:11 Next project for you - install an energy monitor on your big use items - heat pump, EV charger, oven, washing machines etc. Not really expensive - Emporia for £100, or better Open Energy Monitor for about £300.

Great content as ever. How can you find a 100% reliable installer and avoid the conmen.

Great video. I love the idea of heat pump and solar panels with batteries. But lookin at your set-up, where the hell do you put all that kit in a modernish home!

Great video. Informative giving an idea of the usage. I see you have 2 GivEnergy batteries as part of your setup. Mind if you could explain how you worked out why 2 batteries is worth it? I think most installers would only recommend 1 battery from 5kWh to 10kWh range.

Hi, I am seriously looking at changing my gas combi boiler to an ASHP. You give in your calculations the total electric used by the new heating system but could you give me what you gas consumption was for the year before the ASHP installation so that I can try and do a calculation along the same lines as yourself. I too have solar, 13.5Kw battery storage and a new EV so it makes sense to close the loop.

Great video. Our gas boiler is on its way out. I have been contemplating a heat pump system. However, I don't have solar energy. Also, our roof needs to be re tiled. I've seen those roof tiles that are actually solar tiles, but I can't find anywhere in my area that does them. Can you direct me in the right direction because you seem to have far more knowledge about these things than I do. I'm 68 years old. I know that I won't see any savings by undertaking such projects because I'll more than likely be dead before I'll see any savings. Anyhow, l have followed your channel for a while now, and I always find what you have to say intriguing and very interesting. Many thanks for the effort you put into your productions. 👍

My 1970's 5 bedroom house had loft insulation but very little cavity as it had broken down. We used 3,333kWh to maintain 18c for the whole house and the house felt warm at all times, whatever the weather threw at us. Also did our hot water and at that time it was heated whenever it was needed. I am now moving to a night time water heating as i am on the same cheap overnight tariff. Since running the ASHP for the first year, I have paid for removal and replacement of the cavity insulation, this will hopefully reduce my use by up to 30%.

My heat pump was installed last month so it'll be interesting to see how I compare. My house was built in 2005 but in Colorado so almost everything else is different. I think it's funny that our HVAC stuff is all still rated in British Thermal Units and yours is not.

What about mentioning the upcoming New Octopus Cosy HP which will be free for most 3 bedroom houses, even if you have installation of new hot water tank? So, for people who were going to replace their gas boiler anyway, that saves them say £4000, which would pay for some battery/solar installation.

fitting a heat pump to a flat/apartment is much more difficult unless the complex has a central pump fitted for all of the flats and even then it quickly becomes impracticable - I'm not against heat pumps or EVs but it really is very difficult for flat owners/renters

Thanks for the informative video. My question is a bit more mundane, but in all these ASHP videos everyone seems to have space for a plant room where all the pipework etc goes. In our 3 bed semi there is no extra space like this, so where would we put it? Our gas boiler lives in the old airing cupboard upstairs and I'm assuming this is no good. Thanks

Thanks for your video. It has been very helpful. I think I am about 18 months behind you and much of what you say is my thinking too. It is good to get reassurance. Sorry if this has been said before. In your property how many kWh does the heat pump use on a cold day? I am sizing my battery storage and trying to cover as much heat pump load as possible. I believe you have 19 kWh battery storage now. Im looking at 2x Power walls and im just curious how long this will cover the HP load

we have solar panels 19 kw storage batteries, wood burner, tiny bit of oil plus dual inverter a/c which also blows warm air in winter, less than a kilowatt per unit we have 4 but rarely use them all, we live way out of town so its just like you said finding the blend thats best, we to did it because we wanted to not interested about returns to be honest.

I have a hybrid system (new boiler and heat pump)...is it better to keep the system running on manual rather than setting times to keep house at more constant temperature?

great video as always. I am on of those people who has a heat pump that was not fitted properly. Ours is a ground source heat pump fitted around 2008 when our barn conversation was rebuilt. We bought the house 4 years ago, but only ran the heating over winter for 2 years due to the cost. We could use 3500KWH in a single month. The main reason we turned it off was that we were not getting any heat upstairs. Downstairs we have under floor heating which worked well, but the radiators upstairs were always cold. watching your videos, I am going to ask heat geeks if they have any locally trained reputable agents who can come out and look at our system and provide advise. I have looked at replacement for a more modern unit, but I don't want to spend any more money unless I know it will be well spent. equally, I would prefer not to replace a ground source heat pump with a air source heat pump if I can reuse the existing coils I have going into our field as ground source pumps are supposedly more efficient than air source. It's the heating that is the missing item for us now. we have 4kw of solar with a FIT tariff that pays nearly 2K per year. Another 4KW solar array that we fitted last year. A Tesla power wall 2 with gateway. a Zappi and Nissan Leaf - soon to be replaced with a model 3. Like you we do around 25K miles a year in the EV. I need to sit down and do the calculations, but I am confident our electric bill (we have no oil or gas) is less than the fit payment. cheers J

Thanks for the update :) Very interesting. Just wondering how much energy the heat pump uses in an average winters day?

I just wish I could afford to get a heat pump.. Unfortunately cheaper living is only for people who are well off :(

What company did your survey and installed your Vaillant heat pump?

Can I ask if you happen to know if octopus do a good job with heat pump installations? Just got a quote for £500 (nothing wrong with gas boiler, but would like to get off gas), but have no idea where to look for this as only just started doing the research. Thanks.

Have been quoted £2100 for a heat pump, rads and cylinder by Octopus Energy (after the £7500 BUS grant). Already have solar, EV and a battery so looking forward to the heat pump being fitted, if I get a similar saving to you I'll be well happy!!

Another awesome video, only just recently found you. I've been offered a heat pump from octopus for £2,600. Originally I was going to start my electric journey with batteries as I thought I could save the most money with those, wondering now whether I should grab the heat pump first instead 🤔

Does the HP controls not show the heat delivered in kWh? Could use that to estimate the gas costs.

I am moving to a new build in the next 6 weeks. First time heat pump user. Any major tips? Underdloor heating. No solar yet. Rads upstairs .samsung system.i believe

I'm without octopus go, I have only 4 hours at 9p kWh . How would I get the tariff you have with 6 hours ? I have a air to air airsource heat pump it's great and when it's cold it uses about 4kwh a day to heat my house to 19 degrees c , and best bit is it's a second hand unit , was a shop heater so it was very cheap to buy and cost £100 to get it fitted. I'm thinking a battery to store power when it's cheap. What's the cost and how do you connect it to a smart meter. Thankyou for sharing

I know we, in the US, use a log of power. But with the rise in the UK electric prices, I expected much more cost in pounds. We have a more efficient Solar system and larger and our kw price for electricity is $0.138, but I paid way more for the year at $2652. That is also with two electric cars and no battery. Unfortunately, we have a larger house and have two HVAC units, of which only the new one is a heat pump. I know from watching the monitor that new HVAC only uses half the power the original unit does. And the resistive coil in the old unit, when on, is 4 kw.

Why with heat pumps on the scheme , do the fit a combi as well?

We have a similar setup for solar and battery but currently don't have an Ashp and are thinking of installing one can you give me an idea of how many kwh a day they use in the winter I am trying to estimate how much more battery storage we need.

Are you able to share any graphs of an average day in December for eg of how many kwh’s you use to heat your home and how many total radiators you have?

Great video EVM, Surely a heat pump is only viable with a second battery to store night time cheap tariff to power it as a heat pump is 300% more efficient and gas is 1/3 of the cost of daytime electric. For savings of £250 a year the investment for second battery and ASHP would take decades to make financial sense (obvs makes green sense)

Great video. I do wonder what the savings would be with a standard gas system f it was set up with the care that is required for a good heat pump system. Your new GiveEnergy set up looks nice . It would be great too hear your thoughts about how it compares with your Gen1 equipment.

My road and all the houses have just had ne gas mains installed. That suggests to me that my gas combi will be around for a good while yet.

Batteries are still costly... but that is changing fast. Vehicle to Grid capabilities in newer cars will help a lot and newer cheaper residential battery technologies are close (flow batteries).

I can beat your stats with some old technology (gas central heating and electricity) where recently I sourced all my energy for a year at ZERO net cost. This is a two bedroom medium size flat with a new Bosch Boiler. I have the Apple Homepod setup with Philips hue lighting and some of the latest appliances from Bosch. My battery storage is Ecoflow and I am well served by legacy supplier British Gas who run Peak Save.

Andy more data please like how many k/w per day average in each month please

Can you please recommend a OBD EV reader and a companion Android app?

I love the idea that you are getting 20,000 miles of FREE car driving from your solar panels and battery storage, that is an enourmous saving when petrol is close to £2 a litre it must pay for itself in just a few years

I have a heat pump in a wimpy no fines (concrete) home. I also have solar and battery storage and ev. All seem to be working well. What calculations do i need to do to confirm how efficient the heat pump is . Or is there a website where i can check this. Thanks

I've got a similar setup to you, had a heat pump fitted this year and also doubled my battery to 24kWh, do you think your 19kWh battery is going to be enough to run the house for the day in winter after charging it at night on cheap rate? I'm just concerned my battery won't get me through the day, leaving me to run the heat pump on an expensive day time price. Thanks.

How many m3 of gas were you using before the heat pump was installed? Because that would be interesting to place next to the kWh usage, which is of course basically indirectly talking about the COP and things such as the isolation of your house. But it helps to get a feeling.

I didn’t hear you say how much you batteries and inverter cost and whether you factored them cost into your calculations, and how much solar you may generate throughout the year and the size of solar panel array you have.