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Post by Bentley on Jun 8, 2023 17:40:23 GMT
Are you sure that the people who service your gas boiler are really qualified to expound on the relative merits of different energy systems? Most of them aren't even qualified to correctly balance a heating system connected to a gas boiler, let alone talk about different energy systems. Most qualified gas engineers can’t balance a heating system and know nothing about other systems ? Did your wife run off with the gas man? 😁 |
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Post by zanygame on Jun 8, 2023 17:42:04 GMT
You may have a point here Bentley. I will investigate, but it might be that if an old house is very energy inefficient, single glazed, no cavity insulation, poor roof insulation. That the number of heat pumps needed to keep it warm would prove inviable. I live in a modest 4 bed house and use 3 standard air source heat pumps to keep it warm, but being an eco freak my home is also very well insulated. I will read up and report back. You must know that new builds are built with energy saving number one in mind . Jonksy would know more but new build specs and materials are nothing like old build afaik. I suspect that getting my house anywhere near new build spec would need a lot of money and smaller rooms . I notice that you use 3 air source heat pumps . Can you tell me more ? My home is not new (or old) its early 80's. I have spend about 8k on increased insulation and upgraded double glazing etc. My heating. I emphasize mine are AIR SOURCE, not ground source. I have three of them, two do the downstairs and one upstairs. They blow warm air (22 degrees) around the house, but not like you would think, its very slow and gentle, not like a fan. One of my worries when I installed it was whether it would create even heat, but it does and far better than my old central heating. Do you know how they work? |
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Post by Bentley on Jun 8, 2023 18:00:06 GMT
You must know that new builds are built with energy saving number one in mind . Jonksy would know more but new build specs and materials are nothing like old build afaik. I suspect that getting my house anywhere near new build spec would need a lot of money and smaller rooms . I notice that you use 3 air source heat pumps . Can you tell me more ? My home is not new (or old) its early 80's. I have spend about 8k on increased insulation and upgraded double glazing etc. My heating. I emphasize mine are AIR SOURCE, not ground source. I have three of them, two do the downstairs and one upstairs. They blow warm air (22 degrees) around the house, but not like you would think, its very slow and gentle, not like a fan. One of my worries when I installed it was whether it would create even heat, but it does and far better than my old central heating. Do you know how they work? Yes I suppose if you throw enough money and enough heat pumps into the mix then you could make any building suitable and comfortable. Ive got a house built in the 70s. I’ve put new windows and doors in which made a huge difference but to make it comparable with a new build , I would have to insulate floors, walls and ceilings imo. |
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Post by colbops on Jun 8, 2023 18:20:26 GMT
Heat pumps will be expensive when you need a fan heater in the winter and electric combi boilers are really expensive to run . The bloke who services my gas boiler( and repaired it ) has a ground source heat pump . He’s a real eco worrier too. I listen to him like little grasshopper listened to that bloke with ping pong ball eyes😁 But I talk to every gas engineer and electrician ( and builder)that I can. It’s an important issue. I've had my heat pumps for 3 plus years, I've had to back them up with an electric fire in the lounge 3 times to date a total of 5 evenings. They work well down to minus 6 but then struggle. You can get ones that work down to minus 12 but I didn't feel the need to pay the extra for these. My water is heated by a high efficiency electic boiler which runs at 6kwh for 30 minutes twice a day. Wierd. Why didn't the installer recommend an air to water high temperature heat pump. That could've comfortably got your cylinder to over 65C and enough juice to space heat a 4 bed house |
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Post by zanygame on Jun 8, 2023 18:50:32 GMT
My home is not new (or old) its early 80's. I have spend about 8k on increased insulation and upgraded double glazing etc. My heating. I emphasize mine are AIR SOURCE, not ground source. I have three of them, two do the downstairs and one upstairs. They blow warm air (22 degrees) around the house, but not like you would think, its very slow and gentle, not like a fan. One of my worries when I installed it was whether it would create even heat, but it does and far better than my old central heating. Do you know how they work? Yes I suppose if you throw enough money and enough heat pumps into the mix then you could make any building suitable and comfortable. Ive got a house built in the 70s. I’ve put new windows and doors in which made a huge difference but to make it comparable with a new build , I would have to insulate floors, walls and ceilings imo. No, you could get away with 150mm roof insulation and cavity wall. Your existing double glazing is fine. The air source heat pumps cost about £500 each (£1500 total) and about another £1500 for installation. They cost roughly the same to run as gas central heating because they deliver two kw out for each kw in. They'll be a lot cheaper than gas from now on as its predicted to remain high long after the Ukraine war ends. The reason my home is extra insulated is because (As you know) I believe in AGW and do what I can in my small way. But all that's not necessary for heat pumps to work. |
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Post by Bentley on Jun 8, 2023 19:00:01 GMT
Yes I suppose if you throw enough money and enough heat pumps into the mix then you could make any building suitable and comfortable. Ive got a house built in the 70s. I’ve put new windows and doors in which made a huge difference but to make it comparable with a new build , I would have to insulate floors, walls and ceilings imo. No, you could get away with 150mm roof insulation and cavity wall. Your existing double glazing is fine. The air source heat pumps cost about £500 each (£1500 total) and about another £1500 for installation. They cost roughly the same to run as gas central heating because they deliver two kw out for each kw in. They'll be a lot cheaper than gas from now on as its predicted to remain high long after the Ukraine war ends. The reason my home is extra insulated is because (As you know) I believe in AGW and do what I can in my small way. But all that's not necessary for heat pumps to work. I would need a whole new system . The rads need to have twice the surface area . I would need a hot water tank and a means to heat hot water. I don’t believe that more cavity wall would help and I have a screeded floor which IMO would take away a lot of heat . I’ll stick to gas and wait for hydrogen. |
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Post by zanygame on Jun 8, 2023 19:12:27 GMT
No, you could get away with 150mm roof insulation and cavity wall. Your existing double glazing is fine. The air source heat pumps cost about £500 each (£1500 total) and about another £1500 for installation. They cost roughly the same to run as gas central heating because they deliver two kw out for each kw in. They'll be a lot cheaper than gas from now on as its predicted to remain high long after the Ukraine war ends. The reason my home is extra insulated is because (As you know) I believe in AGW and do what I can in my small way. But all that's not necessary for heat pumps to work. I would need a whole new system . The rads need to have twice the surface area . I would need a hot water tank and a means to heat hot water. I don’t believe that more cavity wall would help and I have a screeded floor which IMO would take away a lot of heat . I’ll stick to gas and wait for hydrogen. You wouldn't need radiators at all. Not sure what you mean by a screeded floor, almost every home has a screeded floor, so you must mean something else. |
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Post by Bentley on Jun 8, 2023 19:16:55 GMT
I would need a whole new system . The rads need to have twice the surface area . I would need a hot water tank and a means to heat hot water. I don’t believe that more cavity wall would help and I have a screeded floor which IMO would take away a lot of heat . I’ll stick to gas and wait for hydrogen. You wouldn't need radiators at all. Not sure what you mean by a screeded floor, almost every home has a screeded floor, so you must mean something else. Floors with floor boards don’t always have a screeded floor . I know what I meant …concrete floor… |
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Post by zanygame on Jun 8, 2023 20:04:44 GMT
You wouldn't need radiators at all. Not sure what you mean by a screeded floor, almost every home has a screeded floor, so you must mean something else. Floors with floor boards don’t always have a screeded floor . I know what I meant …concrete floor… Ok. Most modern houses have a concrete floor. Only very old ones have timber floors with floor boards. What I think you fear is that your screeded floor does not have any polystyrene insulation under them. That they are concrete straight onto hardcore. Sorry, I was in the building trade for 30+ years before I invented my current business. Not sure how much heat is lost by concrete floors, but most heat travels upwards, so roof and walls are the most effective insulators. |
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Post by Bentley on Jun 8, 2023 20:29:19 GMT
Floors with floor boards don’t always have a screeded floor . I know what I meant …concrete floor… Ok. Most modern houses have a concrete floor. Only very old ones have timber floors with floor boards. What I think you fear is that your screeded floor does not have any polystyrene insulation under them. That they are concrete straight onto hardcore. Sorry, I was in the building trade for 30+ years before I invented my current business. Not sure how much heat is lost by concrete floors, but most heat travels upwards, so roof and walls are the most effective insulators. Very old? My last house had floorboards and it was built in the 70s. Cold floors will lose heat . |
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Post by zanygame on Jun 8, 2023 20:37:28 GMT
Ok. Most modern houses have a concrete floor. Only very old ones have timber floors with floor boards. What I think you fear is that your screeded floor does not have any polystyrene insulation under them. That they are concrete straight onto hardcore. Sorry, I was in the building trade for 30+ years before I invented my current business. Not sure how much heat is lost by concrete floors, but most heat travels upwards, so roof and walls are the most effective insulators. Very old? My last house had floorboards and it was built in the 70s. Cold floors will lose heat . Do all houses have floorboards UK? Ground floors in houses built before about 1950 are usually covered with floorboards laid over timber joists which are suspended over an underfloor airspace. In the past 50 years solid concrete ground floors have become the norm, although they may be overlaid with timber strip flooring or chipboard. |
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Post by jonksy on Jun 8, 2023 20:48:15 GMT
I would need a whole new system . The rads need to have twice the surface area . I would need a hot water tank and a means to heat hot water. I don’t believe that more cavity wall would help and I have a screeded floor which IMO would take away a lot of heat . I’ll stick to gas and wait for hydrogen. You wouldn't need radiators at all. Not sure what you mean by a screeded floor, almost every home has a screeded floor, so you must mean something else. Ever heard of floorboards or tiles? |
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Post by jonksy on Jun 8, 2023 20:50:04 GMT
Most of them aren't even qualified to correctly balance a heating system connected to a gas boiler, let alone talk about different energy systems. Most qualified gas engineers can’t balance a heating system and know nothing about other systems ? Did your wife run off with the gas man? 😁 Oh dear I think Corgi has a lot to do with it.....LOL |
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Post by jonksy on Jun 8, 2023 20:53:19 GMT
Must be an installation issue, mine are almost silent (As in the video I posted) My neighbours didn't even know I had them. People have had aircon units for years, heat pumps are no different in their noise levels. That is just a myth. Developers will be furiously smashing gas boilers into new builds 24 hours before they aren't allowed to anymore. It is the nature of the construction industry They are still allowed and are NOT being phased out. On the contrary. These monstocities called heat pumps are going the same way as EV's in otherwords a one way ticket to be scrapped. |
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Post by jonksy on Jun 8, 2023 20:59:59 GMT
Total crap they are bloody noisy and totally inefficient. Nope, I have them, you don't. They are very quiet and as efficient as gas central heating. There are lots of official figures available for those who really want to know. Of course if you've decided you don't like them regardless, then you have Jonsky. Its not just me that has decided that they are a waste of space. Contractors hate the fucking things and any estate manager or site agent will tell you they are No1 gripe for the tenants of newbuilds. The engineers are called back time after time for people complaining about them and the lack of efficency. But hey what would I know I only build houses? |
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