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Mixergy with heat pump - Worth it?

waqasahmed
Posts: 1,988 Forumite


I don't have a tank atm, and my plan of action for the house is:
Solar PV + batteries
Then get an MVHR
Upsize my radiators
Then buy an ASHP and ditch gas entirely.
They say that the COP is improved by 5-10% but let's say that your COP is the UK average of 2.8. Would a COP of 3.08 really be worth it, if this tank probably costs a few grand?
Solar PV + batteries
Then get an MVHR
Upsize my radiators
Then buy an ASHP and ditch gas entirely.
They say that the COP is improved by 5-10% but let's say that your COP is the UK average of 2.8. Would a COP of 3.08 really be worth it, if this tank probably costs a few grand?
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Comments
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waqasahmed said:I don't have a tank atm, and my plan of action for the house is:
Solar PV + batteries
Then get an MVHR
Upsize my radiators
Then buy an ASHP and ditch gas entirely.
They say that the COP is improved by 5-10% but let's say that your COP is the UK average of 2.8. Would a COP of 3.08 really be worth it, if this tank probably costs a few grand?0 -
shinytop said:waqasahmed said:I don't have a tank atm, and my plan of action for the house is:
Solar PV + batteries
Then get an MVHR
Upsize my radiators
Then buy an ASHP and ditch gas entirely.
They say that the COP is improved by 5-10% but let's say that your COP is the UK average of 2.8. Would a COP of 3.08 really be worth it, if this tank probably costs a few grand?0 -
You'll need an ASHP compatible tank anyway so a Mixergy one with the ASHP facility is only going to be a few hundred more, not thousands.2
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Here's a quote I received for a Solar and Heat Pump ready cylinder. Given the terrible aftersales support received from Megaflo/ Baxi, I would definitely have invested in Mixergy if I could do it all again.
Anyone know if there is a efficiency advantage over Vaillant heat pump hot water cylinders?
- 10 x 400w LG + 6 x 550W SHARP BiFacial Panels + SE 3680 HD Wave Inverter + SE Optimizers. SE London.
- Triple aspect. (22% ENE/ 33% SSE/ 45% WSW)
- Viessmann 200-W on Advanced Weather Comp. (the most efficient gas boiler sold)Feel free to DM me if I can help with any energy saving!1 -
Looks to me as if a mixenergy tank has some useful features such as being "heat pump ready" - which presumably means it has a suitably large-area coil inside. And there are some gimmicky features like "voice control". The only way I can see that it could improve a heat pump COP is to make the water less hot.Reed1
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