Moving from NSH to A2A Heat Pumps?

MoJoRsnG

Hello all,

I hope you had a nice Christmas.

I live in a 2-bedroom mid-terraced house in Gloucestershire. House was built around 1950s. Recently cavity walls were filled, and loft was insulated. All windows are double glazed. I have 8x405W MBB Half-cell Module solar panels. Property currently heated by night storage units, and I am on Economy 7 tariff with Octopus. House is south facing (gets sunshine pretty much all day) and there are no trees, houses to block the sunlight (Panels was recently installed but electrician hasn’t connected them, so I don’t have any stats yet)

I have been reading/researching sometime to decide if I get any benefit from installing air to air heat pump and a battery (Most of my radiators are not working and they are old and not efficient, so I thought instead of spending money on replacing them I use it to install a much efficient system plus I would really like to go Green). Last year I used total 4802kWh electric and when heating was not on, my average usage was only 4kWh a day.

On my current tariff I pay £21.30p day rate and £13.79p night rate.

I am here to get some advice really (I am a bit information overloaded) if moving to air-to-air heat pumps make sense (and adding battery?). It would also be very useful to know if anyone has changed their night storage system to air-to-air heat pump system and would have first-hand experience.

Many thanks in advance. 

2nd_time_buyer

Hi. I would say that the air to air heat pump would be cheaper to run than the storage heaters with or without a battery.

The Panasonic unit we installed last year for £1500 has an overall seasonal efficiency of 520%. So even if you ran it using the standard rate it would still be cheaper than the storage heaters (or gas) I think.

Other than during the cold snap in December, our single 3.5kw unit has been pretty much sufficient to heat the whole house without the central heating (we have a gas fire in the lounge which we put on occasionally). 

Judging by your consumption, I am guessing you don't have your house el scorcio and you would be fine with a single unit. Although you might need to be prepared to spend longer in the areas that are more directly heated.

There is another thread about heat pump hot water cylinders which in my opinion might make more financial sense than a battery when combined with solar and an air to air heat pump.

Screwdriva

2nd_time_buyer said:

There is another thread about heat pump hot water cylinders which in my opinion might make more financial sense than a battery when combined with solar and an air to air heat pump.

Or you could enquire with Daikin about their upcoming A-A heat multi split heat pump with a dedicated port for heating a hot water cylinder.

70sbudgie

Screwdriva said:

2nd_time_buyer said:

There is another thread about heat pump hot water cylinders which in my opinion might make more financial sense than a battery when combined with solar and an air to air heat pump.

Or you could enquire with Daikin about their upcoming A-A heat multi split heat pump with a dedicated port for heating a hot water cylinder.

Is this on their website? I had a look through, but didn't see it.

2nd_time_buyer

70sbudgie said:

Screwdriva said:

2nd_time_buyer said:

There is another thread about heat pump hot water cylinders which in my opinion might make more financial sense than a battery when combined with solar and an air to air heat pump.

Or you could enquire with Daikin about their upcoming A-A heat multi split heat pump with a dedicated port for heating a hot water cylinder.

Is this on their website? I had a look through, but didn't see it.

I don't think there are any imminent plans for its sale in the UK according to the video @Screwdriva posted on another thread. Looks a very interesting option though. 

There are pro/cons for multi split units as opposed to multiple singles units (aesthetics, power draw, efficiency). I came to the conclusion that multiple singles units would work better for me if we needed more outlets. However, the unit @Screwdriva mentioned is potentially a game changer.

Screwdriva

2nd_time_buyer said:

I don't think there are any imminent plans for its sale in the UK according to the video @Screwdriva posted on another thread. Looks a very interesting option though. 

Daimon (the guy in the video) shared that Daikin plan to sell the larger, UK specific multi-split A-A with dedicated Hot water port in the near future. A quick call with the Daikin sales team confirmed a 2023 product launch.

MoJoRsnG

hanks for all your replies. I don't use hot water at all. If I need to do washing up I just boil the kettle quickly and I use electric shower so I was actually planning to get rid og my hot water cylinder. Since my solar was connected I realise, with a little bit of luck I can generate more energy than I need. Considering current tariffs selling excess energy back to the grid doesn't really save much money(who knows what is going to happen in the future). I am gently warming up to the solar storage idea. On a good day excess solar energy will charge the battery and on a bad day off-peak tariff. What do you think?

MoJoRsnG

MoJoRsnG said:

hanks

Thanks...

Reed_Richards

MoJoRsnG said:

I don't use hot water at all ... so I was actually planning to get rid of my hot water cylinder. 

Apart from your own needs, you ought to consider the resale value of your house.  I would be quite put-off by a house that had no hot water supply    

MoJoRsnG

Apart from your own needs, you ought to consider the resale value of your house.  I would be quite put-off by a house that had no hot water supply    

Good point.

gefnew

This may have a change in thought about what you use,
New Tariff for Heatpump owners - around 20p per k/w @ Octopus Energy | hotukdeals