Heat Pump integrated into Hot Water Cylinders (Vaillant, Daikin etc.)

Screwdriva

Seems like a sensible way to reduce hot water heating costs without going with a heat pump for the entire household. I wonder if any users/ owners are out there?

https://www.ariston.com/en-uk/products/heat-pumps/air-source-heat-pump-water-heater/nuos-plus-wifi-uk/

QrizB

Good to see another company entering this part of the market!

A year ago I knew of two "big brand" manufacturers selling these: Tesy and Dimplex, plus the less well-known Cool Energy. I even started a (short) thread on the subject:

https://forums.moneysavingexpert.com/discussion/6284240/heat-pump-hot-water-cylinders

The idea of using waste heat from kitchens & bathrooms is an interesting one, but in the winter the energy balance is less helpful. Most seem to have a conventional coil for thermal sources, for use in the colder months.

Edit to add: The Cool Energy line seem to be rebadged Italian products from Styleboiler.

Screwdriva

Seems to be around £1000 over a conventional option (Megaflo as an example is around £1200 for an 250L tank)

2nd_time_buyer

Thanks, do you think it would it be a viable compliment to air-to-air heat pumps(?)

QrizB

2nd_time_buyer said:

Thanks, do you think it would it be a viable compliment to air-to-air heat pumps(?)

That's one obvious application for these in a domestic environment. AAHP would otherwise leave you with direct electric water heating.

shinytop

 Screwdriva said:

Seems like a sensible way to reduce hot water heating costs without going with a heat pump for the entire household. I wonder if any users/ owners are out there?

https://www.ariston.com/en-uk/products/heat-pumps/air-source-heat-pump-water-heater/nuos-plus-wifi-uk/

It's definitely something worth looking at. But I'm not sure this one would work in many UK homes as it appears to need to be in a room of 30m3 and has a SPL of 51/55db(A), which is more than my outdoor ASHP.   

Screwdriva

shinytop said:

 Screwdriva said:

Seems like a sensible way to reduce hot water heating costs without going with a heat pump for the entire household. I wonder if any users/ owners are out there?

https://www.ariston.com/en-uk/products/heat-pumps/air-source-heat-pump-water-heater/nuos-plus-wifi-uk/

It's definitely something worth looking at. But I'm not sure this one would work in many UK homes as it appears to need to be in a room of 30m3 and has a SPL of 51/55db(A), which is more than my outdoor ASHP.   

I believe the 30m3 requirement is only if installation is ductless? 

2nd_time_buyer

Screwdriva said:

shinytop said:

 Screwdriva said:

Seems like a sensible way to reduce hot water heating costs without going with a heat pump for the entire household. I wonder if any users/ owners are out there?

https://www.ariston.com/en-uk/products/heat-pumps/air-source-heat-pump-water-heater/nuos-plus-wifi-uk/

It's definitely something worth looking at. But I'm not sure this one would work in many UK homes as it appears to need to be in a room of 30m3 and has a SPL of 51/55db(A), which is more than my outdoor ASHP.   

I believe it requires this to be ductless? 

From the installation manual:

"a) In the event of water heaters without an air exhaust duct, the room of installation should have a volume of no less than 30 m3 and must be adequately ventilated. "

So if it can have a duct then perhaps it might be okay? If it was put in a cupboard the 51dBA would also be okay. It is not dissimilar from a combi boiler.

Edit: from a quick skim of the manual it seems there are options for ducted and ductless installation.

shinytop

2nd_time_buyer said:

Screwdriva said:

shinytop said:

 Screwdriva said:

Seems like a sensible way to reduce hot water heating costs without going with a heat pump for the entire household. I wonder if any users/ owners are out there?

https://www.ariston.com/en-uk/products/heat-pumps/air-source-heat-pump-water-heater/nuos-plus-wifi-uk/

It's definitely something worth looking at. But I'm not sure this one would work in many UK homes as it appears to need to be in a room of 30m3 and has a SPL of 51/55db(A), which is more than my outdoor ASHP.   

I believe it requires this to be ductless? 

From the installation manual:

"a) In the event of water heaters without an air exhaust duct, the room of installation should have a volume of no less than 30 m3 and must be adequately ventilated. "

So if it can have a duct then perhaps it might be okay? If it was put in a cupboard the 51dBA would also be okay. It is not dissimilar from a combi boiler.

Edit: from a quick skim of the manual it seems there are options for ducted and ductless installation.

I wonder if you could divert any ducting for some free AC in the summer?

2nd_time_buyer

shinytop said:

2nd_time_buyer said:

Screwdriva said:

shinytop said:

 Screwdriva said:

Seems like a sensible way to reduce hot water heating costs without going with a heat pump for the entire household. I wonder if any users/ owners are out there?

https://www.ariston.com/en-uk/products/heat-pumps/air-source-heat-pump-water-heater/nuos-plus-wifi-uk/

It's definitely something worth looking at. But I'm not sure this one would work in many UK homes as it appears to need to be in a room of 30m3 and has a SPL of 51/55db(A), which is more than my outdoor ASHP.   

I believe it requires this to be ductless? 

From the installation manual:

"a) In the event of water heaters without an air exhaust duct, the room of installation should have a volume of no less than 30 m3 and must be adequately ventilated. "

So if it can have a duct then perhaps it might be okay? If it was put in a cupboard the 51dBA would also be okay. It is not dissimilar from a combi boiler.

Edit: from a quick skim of the manual it seems there are options for ducted and ductless installation.

I wonder if you could divert any ducting for some free AC in the summer?

Very good idea. I am warming (and cooling) to the idea.

Screwdriva

shinytop said:

I wonder if you could divert any ducting for some free AC in the summer?

I believe many owners have done this and that the cooling is substantial.