When the Daily Mail says it is raining, you should always take a look out of your window.
Lets do a quick reality check on what they have been saying about heat pumps? Here is the actual spec sheet for an actual heat pump - the actual Hitachi "Yutaki S80".
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Lets do a quick reality check on what they have been saying about heat pumps? Here is the actual spec sheet for an actual heat pump - the actual Hitachi "Yutaki S80".
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Daily Mail:
"They don't work in cold weather."
Spec Sheet:
Outdoor unit operating range -25deg C to +46 deg C.
DM: Cannot deliver *60 deg Water at tap.
Spec: Max Water Outlet Temperature 80 deg C
*NB: B. Regs part G banned >48 deg C to baths in 2010. Some "expert", eh?
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"They don't work in cold weather."
Spec Sheet:
Outdoor unit operating range -25deg C to +46 deg C.
DM: Cannot deliver *60 deg Water at tap.
Spec: Max Water Outlet Temperature 80 deg C
*NB: B. Regs part G banned >48 deg C to baths in 2010. Some "expert", eh?
2/
DM: Heat pumps are noisy.
Spec: Indoor unit 57dB(A)
Lets compare to common household appliances?
Note 1: dB is logarithmic; every +3dB doubles sound power.
Note 2: human ears are also logarithmic, to a different base; +10dB doubles perceived noise.
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Spec: Indoor unit 57dB(A)
Lets compare to common household appliances?
Note 1: dB is logarithmic; every +3dB doubles sound power.
Note 2: human ears are also logarithmic, to a different base; +10dB doubles perceived noise.
3/
OK, 57 dB(A) is like a bathroom extract, or ..ahem.. a fan-assisted combi boiler 😉, but it will be located in an airing cupboard, typically taking off 25dB (35dB with solid door & draft stripping). Add similar doors on & Living & Bedrooms and it is basically silent.
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DM: Expensive to maintain.
JG: Utter nonsense. Heat pumps are inherently MORE reliable than boilers.
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JG: Utter nonsense. Heat pumps are inherently MORE reliable than boilers.
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DM: They don't heat up the house as quickly.
JG: The problem with screwdivers is they are rubbish at knocking nails in. HPs should be run 24/7; if you get an HP, rip your old boiler time programmer off the wall and kick it down the street!
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JG: The problem with screwdivers is they are rubbish at knocking nails in. HPs should be run 24/7; if you get an HP, rip your old boiler time programmer off the wall and kick it down the street!
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DM: they are popular in Scandinavia, but don't work in the UK.
JG: I hate to be the one to break it to you, DM, but you know it gets a lot colder in Scandinavia than the UK, right?
And we are talking about heating technologies...
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JG: I hate to be the one to break it to you, DM, but you know it gets a lot colder in Scandinavia than the UK, right?
And we are talking about heating technologies...
7/
DM: You spend more on Electricity than you would on gas.
JG: If the HP is installed AND OPERATED correctly, this is simply not true. BTW, did I mention "HPs should be run 24/7; if you get an HP, rip your old boiler time programmer off the wall and kick it down the street!"
8/
JG: If the HP is installed AND OPERATED correctly, this is simply not true. BTW, did I mention "HPs should be run 24/7; if you get an HP, rip your old boiler time programmer off the wall and kick it down the street!"
8/
DM: You need to upsize your radiators.
JG: Actually... very often you don't. Radiators are frequently oversized by 50-100% anyway, on the assumption the heating would be timeclock operated, so you must offset 24 hours of heat losses with two, 4-hour, bursts of heating.
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JG: Actually... very often you don't. Radiators are frequently oversized by 50-100% anyway, on the assumption the heating would be timeclock operated, so you must offset 24 hours of heat losses with two, 4-hour, bursts of heating.
9/
And even if you do have to add to or upsize some of your radiators, at £150 a pop, is that *really* a deal breaker?
10/
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DM: They need well-insulted houses to work.
JG: (a) Is that a *bad* thing - another incentive to retrofit insulation?
(b) Not quite true: you could heat a garden marquee in January with a big enough HP. But HPs cost much more *per KW* than boilers. What this means
11/
JG: (a) Is that a *bad* thing - another incentive to retrofit insulation?
(b) Not quite true: you could heat a garden marquee in January with a big enough HP. But HPs cost much more *per KW* than boilers. What this means
11/
is it makes sense to spend more money on insulation to save on the captal cost of the HP, rather than slamming a big cheap boiler in and leaving the fuel costs to tomorrow, or SOPS (some other poor slob).
As I said, is that a *bad* thing?
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As I said, is that a *bad* thing?
12/
DM: " "
That's all they had to say about Global Heating: fck-all.
The thing about heat pumps is they use electricity not gas. So when the Grid becomes zero carbon, heat becomes zero carbon. Currently heat, in all forms, is 40% of UK emissions.
There are other forms of
13/
That's all they had to say about Global Heating: fck-all.
The thing about heat pumps is they use electricity not gas. So when the Grid becomes zero carbon, heat becomes zero carbon. Currently heat, in all forms, is 40% of UK emissions.
There are other forms of
13/
Electric heating, but you get 1KW out for 1KW in, whereas with heat pumps you can get 4 or 5. Meaning far LESS aero, solar, nuclear needed to generate the electricity, and much LESS Grid investment needed to deliver it.
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It is very easy for the DM to take cheap shots based on myths, lies and fossil fuel lobby tropes, but Global Heating is REAL. And if it doesn't kill us it will make us sadder and poorer in every way. We cannot go on burning gas. So, DM, what *exactly* is YOUR alternative?
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