JtG

https://www.accessbuildingproducts.co.uk/product/air-tight-part-l-hinge/ Jt

I know there has been a time delay - but I too am fitting an airtight hatch and found this product which seems to have better U values than the option discussed already. Is there a problem with it please? Here is the description: Airtight at 600Pa of positive or negative air pressure (12 x the standard required) GWP and ODP rating of zero Exceeds NHBC requirements Spring loaded “easy to open” high compression catch Inner & outer neoprene memory draught seals Invisible pre-fitted hinges for a quick easy installation Robust long lasting zintec steel design Smooth white satin powder coated in RAL 9010 Slim frame for contemporary unobtrusive aesthetics Projects into the ceiling space a mere 2mm Air seals without the use of sealant or caulking Three models exceeding Part “L”

Yeah - my idea with the FIR panels was precautionary to stop the system icing up at the very coldest points of winter, when they system is pulling in air and the attic temperature was seriously cold, so 4 hours for few days of the winter....

Thanks JohnMo. That's how I read it and I will make sure my installer buys it. RichardL - you are right that the position is a dilemma; between the hot water travelling further and the optimising the COP with a warmer environment. All the heat in my house comes from electric heaters so I wasn't keen on that being sucked up to heat the water. So it is a case of ducting from the kitchen (where the combi boiler is) and 1m from the kitchen sink and 2m from the shower, but you do need a drain which we can't do from that point.. My Alternative (its a bungalow) is directly above that ktichen cuboard, in the attic, so all the copper pipes are in perfect position for installing and without ducting which can be £700.. I'm aware my COP will suffer in the winter - I'm even thinking of making sure there's a socket to put an infrared heater up there for that cold week like we had last Dec. Do you know what the minmum temperatures are in a conservatory in the winter? Better than an attic? Jt

I had settled on the Dimplex Edel 170l (but might wait for the Mixergy iHP) as it has quietest operation, and it will be in the attic above my carer's bedroom. There's only the 2 of us, and only one of us uses hot water so 170l should be more than adequate. I have had trouble getting prospective installers to understand what they are and to quote. I've had a quote of £1000 that was withdrawn, and 2 quotes of £2500 - that's installation and materials and vat on those. but not the cylinder or ducting. Could anyone advise me if that is reasonable please? How many half days of work should that cover, please? Its to put marine ply, in the attic area, where we are placing the cylinder, bringing up a electric cable up from the boiler cupboard below, and removing the boiler from the kitchen, and capping the gas, and installing the new system. It is going directly above the boiler cupboard so I hope that reduces the amount of change to my piping. Also could anyone comment on the VAT, please? I have reviewed the energy saving materials and 2.20 includes heat pumps and does say spare OR WATER HEATING. So I think 0% is right... "2.20 Air source heat pumps Air source heat pumps use the air as a source of heat. They absorb heat from the outside or surrounding air and transfer that into useable heat in the home for space or water heating, or both." https://www.gov.uk/guidance/vat-on-energy-saving-materials-and-heating-equipment-notice-7086 I post in the HMRC customer forum, who linked back to the link above, so none the wiser!

Hi - thanks for directing me onto the all in one heat pump water heaters. Been trying to get all info and also quotations to install. I have settled on the Dimplex Edel 170l as it has quietest operation, and it will be in the attic above my carer's bedroom. There's only the 2 of us, and only one of us uses hot water so 170l should be more than adequate. I have had trouble getting prospective installers to understand what they are and to quote. I've had a quote of £1000 that was withdrawn, and 2 quotes of £2500 - that's installation and materials and vat on those. but not the cylinder or ducting. Could anyone advise me if that is reasonable please? How many half days of work should that cover, please? Its to put marine ply, in the attic area, where we are placing the cylinder, bringing up a electric cable up from the boiler cupboard below, and removing the boiler from the kitcehn, and capping the gas, and installing the new system. It going directly above the boiler cupboard so I hope that reduces the amount of change to my piping. Also could anyone comment on the VAT, please? I have reviewed the energy saving materials and 2.20 includes heat pumps and does say spare OR WATER HEATING. So I think 0% is right... "2.20 Air source heat pumps Air source heat pumps use the air as a source of heat. They absorb heat from the outside or surrounding air and transfer that into useable heat in the home for space or water heating, or both." https://www.gov.uk/guidance/vat-on-energy-saving-materials-and-heating-equipment-notice-7086 =============================================================================================================== For others who are interested in researching them. I found that these are being installed in Australia (heat pump HWS), America and in various countries on the continent - with government subsidies and rebates too. There's a facebook group MEEH where the australians discuss them, and a dutch group called Tweakers. Durability is a key issue, but the prevailing view is that buying good quality removes that worry (one australian has had one installed for 20 years!) Noise is also a factor if the cylinder is being installed in a sensitive location. In Europe there are many brands LG is interesting ,with its 10 year guarantee, Daikin, Panasonic and a brand called Atlantic... LG told me that UK regulation is an obstacle *sigh* A british heating engineer reviews his experience (all good) on Youtube here

Just spent the winter using far infrared heat ceiling panels to heat one woman and 35 square metres with 4 heaters totalling 2.1kw Used smart plugs and smart thermometers to set up fairly detailed scenarios including turning the temperature up when there's someone in the room so they get the rays directly. Looks to have reduced my bill from 8000 kwh of gas to 2000 kwh of electricity. My sister has also used 2 x175w in her office for working from home. She said that she turns them on when she starts feeling cold and feels only faint drift of heat, then 10-minutes later realises she doesn't feel cold anymore. I would say they have their place in the electrification of heating in British homes.

Oh I see, no this is for a 1960s bungalow that I want to retrofit to aecb standards. So heating up is no problem. I have been told a 10 degree difference is good enough. I kinda felt that the images from the thermal camera would give me a record to work from when* I send someone around with foam and airtight tape! *Disability restricts my DIY and the world's a safer place for it!

Yeah I thought about an all-in-one water heater/heat pump. I wasn't keen on the heat pump extracting heat from the room that the tank in Someone has suggested two heat pumps outside: one for the air and one to heat water. (And one to rule them all) But surely two can't be more energy efficient than one? 😎Jt

I think it's running around inside - as the outside air moves to replace the inside air that the fan removed??

May I have the contact please? Also what was the scope of your final report if you don't mind? I'm wanting to finish up with data for a whole house retrofit plan. It's strange. I've had 2 other quotations for thermal imaging that were in line with mine

I'm trying to arrange one for my house but need one or two other properties to justify the expert's journey. WHY WOULD YOU WANT ONE? They measure how well a house holds onto to the heat and where it's being lost (Bring out the insulation foam and tape!!). This is the basic data on which you can decide how to upgrade your property with insulation, heat pumps etc. HOW'S IT DONE? First the warm property is sealed up; Next a fan is fitted in the front door to suck out some air from inside; Then using a thermal camera you can see the flow of cold being sucked into the property. WHAT DOES IT COST? £600 for four hour test plus cost of travel WHO WOULD DO IT? ( link removed by moderation team ). She knows I am looking to put together enough properties to come to this area so contact her or ask me

ARGO RESEARCH - Started with Italy as it is an italian brand - pompa di calore = heat pump. Lots there - this chat includes info about Argo for a newbie.... https://www.energeticambiente.it/forum/sezione-ecologia-e-ambiente/risparmio-energetico-ed-efficienza-energetica/61263-ristrutturazione-appartamento-e-scelta-impianti-per-riscaldamento-raffrescamento-e-acs

Aha - a fellow traveller - Welcome- have you found any other brands that do A2A with DHW? I am attracted by the Argo one but can't find any reviews in the UK - I suspect Argo may be more used on the continent but am puzzled as to how to get real life opinions from there. With A2W the installation and refinement afterwards seem key to achieving the COP, do you think its the same for A2A? Jt

Hi, Has anyone had experience with an A2A with DWH? Would love to have feedback please. I'm weighing up my options for a modest retrofit on my 2 bed bungalow in Norfolk. Indeed I have a airtightness test with energy audit on its way that should help me know the order to do things etc including greening space temperature. This winter I reduced my space heating from 8000kwh to 3000kwh with far Infrared heaters plugged into smart sockets so I can live with that for a while. But as I use an 15 year old mitsubishi air-conditioner all summer (using cold to manage pain), finding an a2a heat pump with a water tank seems a good way to get the water heating off gas. And there are 3 that I've found! Argo iseries with their Emix tank - that heats even when AC is on, and uses waste heat from cooling for the water tank Daikin Multi plus - with a 120l tank that could go above the washing machine Panasonic Aquarea Ecoflex - may only just be available. - again reuses the waste heat How effective the filters are is another issue for me to consider - panasonic seem to have gone all out in that respect. So has anyone installed these please? What is the COP for the heating, cooling and hotwater like in real life? Do you know of any more models? Regards, Jt