Heat pumps vs Gas boiler ?

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4 Aug 2007
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Whats a 3kWh heater?

Efficiency is conversion of energy to its use(heat), it's not about heat transfer. Not sure what you are on about with pumping, an immersion heater simply sits, immersed, in water within the tank. Im confused about what you are talking about to be honest if we are talking about a hot water tank with stored hot water. Its not an inline heater.

Exactly I have no idea what hes waffling on about
As you say unless you are converting the 3kwh of energy being consumed by the immersion to some other form of energy/radiation by default its converting that to "heat energy"
 
Soldato
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Eh? My ASHP can supply more than 55C (I think my Target flow temperature is set to 60C).

Also why would my heating system need 80C?
Because old systems were based on a flow temp of 80c, and new systems well a lot of installers are rubbish and fail to take into account low flow and just size radiators for 80c flow.
 
Associate
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All adds up right but good luck using solar panels in god old british weather lol

I think, the bigger benefit of the battery is charging up at night on the cheaper tariff therefore people can instantly see the results before hand and understand the benefits without it being explained or needed any research.

i.e you charge it at night on eco7/10 then use that during the day/evening and never pay the standard rate again.

Whereas anything else regarding heat pumps or gas boilers etc theres always different view points that people will blindly stand by their POV.

Not my specialist subject, but I found this video interesting.


Particularly where he's talking about outside temperature and the effectiveness of the heating system.

Away to watch it now, I’ve seen a video of his before where he was comparing different types of screw heads where he claimed PZ was far superior to anything else for higher torque and reduced cam out so would just take any thing he says with a pinch of salt.
 
Associate
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We had a new boiler install very recently. I did enquire about a heat pump, but after a few engineers came round we decided to have a traditional combi boiler. We had a Worcester 4000 installed and got to say it’s a very efficient boiler.
The two many reasons we went for this over a heat pump, cost and we would have had the outside pump in our small garden. We didn’t want to be looking at that whilst enjoying a garden and it would have taking up valuable space.
If we had a drive way, where we could have had it installed I would have considered it a bit more. Or outside wall that didn’t a public path next to it.
 
Soldato
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We had a new boiler install very recently. I did enquire about a heat pump, but after a few engineers came round we decided to have a traditional combi boiler. We had a Worcester 4000 installed and got to say it’s a very efficient boiler.
how much more efficient would you say - with or without a separate hot tank ? we are toying with the same idea, I somewhat have the view if it isn't broke don't fix it.

plumber for combi estimation basically said it is only niche companies doing heat pump installs at the moment, at a premium, whilst other plumbers got up to speed with the technology, so perhaps difficult to get a non-partisan opinion, if the delta hp install cost offsets the current subsidy then maybe better to wait;
comparatively, how much is their yearly maintenance charge too.

he claimed PZ was far superior to anything else for higher torque and reduced cam out so would just take any thing he says with a pinch of salt.
perfectly true they optimised philips.
 
Soldato
Joined
27 Mar 2013
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7,480
how much more efficient would you say - with or without a separate hot tank ? we are toying with the same idea, I somewhat have the view if it isn't broke don't fix it.

plumber for combi estimation basically said it is only niche companies doing heat pump installs at the moment, at a premium, whilst other plumbers got up to speed with the technology, so perhaps difficult to get a non-partisan opinion, if the delta hp install cost offsets the current subsidy then maybe better to wait;
comparatively, how much is their yearly maintenance charge too.


perfectly true they optimised philips.
It's no torx though.
 
Soldato
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1 Jul 2003
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There's a voice that keeps on calling me.
Europe has been better at implementing HP's in general, our old housing stock doesnt lend itself well to AS or GS.

The GOVT has been talking alot but with no real substance behind much of what they say. A few years ago it was hydrogen, now assuming we can crack hydrogen generation in huge amount, its an easier transition for ordinary joe. Many boiler manufacturers have tested for a 20% mix with no issues, even at 100% tests have gone really well.
 
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