Discussion ... ASHP(Air/Air) with Solar pv ....

Wolfbo38

Sorry Martyn, no idea how I copy the bit of your comment I want to reply to, so it shows grey like you have done, however re: the sunny days in winter. Yes we gain a lot from them with the HMV Dalek, there is probably another forum where people discuss their love of all these old heaters etc, I probably have had 8 I've restored, some of which I have given away to friends and family, some sold and three here still in use, and let's not get onto the 1930's chrome or mustard enamel Christian Barman 3kW ones..two of those currently around the house and 2 in the loft awaiting time to work on them...sorry an aside there totally off topic but ideal to use to heat with spare solar energy, although not giving having a COP benefit. 

I definitely will look to an A/A HP (AC) this winter, it was something I had never thought of before, just thinking AC units were costly to run either to chill or to heat...but that is obviously very different now and could be just the right thing for this old Victorian house of ours, not sure how the look will fit in with the decor, but I'll live with that for the benefits!  I used to switch on and off the HMVs before we had the Solic 200, even converting one to remote control with adapted 750W and 1kW elements allowing me to chop and change depending on the sun, I'm sure I can do much the same with an AC unit, but not worry quite as much as being so precise about it due to the COP benefit.  

A BEV would be great, alas we live in a row of Victorian houses with no drives, so until they come up with a way for us to be able to charge on the street using our own generated energy it is a way down the line.  

zeupater

Hi All

Cool day inside - scorcher as soon as you went out of the door though ! ...

Z

ForestBluebells

Did people get planning permission for installing the air/air systems?

what model of unit did people go for and the COP for them? Split or multi split? 

2nd_time_buyer

ForestBluebells said:

Did people get planning permission for installing the air/air systems?

what model of unit did people go for and the COP for them? Split or multi split? 

I didn't. 

ispookie666

ForestBluebells said:

Did people get planning permission for installing the air/air systems?

what model of unit did people go for and the COP for them? Split or multi split? 

Yes I did. I have installed 3 units - 2* Daikin 2.5 and 1 Mitsi 7.1

I did this as two projects and did two planning applications.  Cost me a few hundred pounds but the stinger was noise assessment for the bigger unit, which cost me a grand. 

Screwdriva

Not getting planning permission will likely come back to bite at a later date. 

I've wondered what people's actual measured consumption for A2A (vs. A2W) heat pumps were for heating a space. Sounds like the guys @ Heat Geeks will be answering this soon!

zeupater

Screwdriva said:

Not getting planning permission will likely come back to bite at a later date. 

I've wondered what people's actual measured consumption for A2A (vs. A2W) heat pumps were for heating a space. Sounds like the guys @ Heat Geeks will be answering this soon!

Hi

Of course, in the case of a dwelling house at date of installation this very much depends on compliance as permitted development, which describes such things as distance from boundaries. size, location on building, building listings etc, effectively sharing many restrictions with PV permitted development requirements .... there's usually a comprehensive description on local authority planning portals, if not I'm pretty sure the actual planning requirements are available within the .gov legislation website.

Regarding A2A COP ... ours pretty much stacks up to the manufacturer's data book when tested after installation ... earlier posts in this thread cover this ... so COP of 5.5 to 6.0 should be achievable at temperatures typical of this time of year with a decent spec/quality unit.

Running ours today on a pretty low setting just to boost background heat, this being completely powered from spare solar -  even with today's cloudy skies ... internal temperature 20.7C, outside 15C ... don't know about heat geeks or any bias they may, or may not, hold but our own experience has been better than originally expected, so suggest people just read through the thread and gauge the thoughts & experiences of contributors ...

HTH - Z

zeupater

ispookie666 said:

ForestBluebells said:

Did people get planning permission for installing the air/air systems?

what model of unit did people go for and the COP for them? Split or multi split? 

Yes I did. I have installed 3 units - 2* Daikin 2.5 and 1 Mitsi 7.1

I did this as two projects and did two planning applications.  Cost me a few hundred pounds but the stinger was noise assessment for the bigger unit, which cost me a grand. 

Hi

What order did you install them? ... from the time of our installation I seem to remember that permitted development only covers the first unit installed, with consent required for further installations - also, do you know if the noise assessment resulted from proximity to property boundary/neighbouring properties?

Just curious - Z

ispookie666

@zeupater
The current planning rules do not provide permitted development rights to ASHP which can cool.  This makes planning permission essential for all A2AHP.  Its a bit silly rule but I can see why they have kept it.  
I initially submitted for all three, but went ahead and installed the two smaller ones.  The environmental planning officer wanted to ensure noise was not going to be an issue and wanted a noise assessment survey before the larger unit went up.  I ended up doing this in two stages.   

The noise assessment survey is needed for any equipment or device which produces noise and is installed outside and is not limited to ASHP. To detect or reduce the possibility of complaints being received at a later date.  If i remember correctly the equipment should be either  less than  or  upto 3 dB above ambient noise level.  This can be problematic in a residential areas.  I live next to a main road and railway line, fat chance of hearing anything else other than those noises! So was a pointless exercise   

shinytop

ispookie666 said:

@zeupater
The current planning rules do not provide permitted development rights to ASHP which can cool.  This makes planning permission essential for all A2AHP.  Its a bit silly rule but I can see why they have kept it.  
I initially submitted for all three, but went ahead and installed the two smaller ones.  The environmental planning officer wanted to ensure noise was not going to be an issue and wanted a noise assessment survey before the larger unit went up.  I ended up doing this in two stages.   

The noise assessment survey is needed for any equipment or device which produces noise and is installed outside and is not limited to ASHP. To detect or reduce the possibility of complaints being received at a later date.  If i remember correctly the equipment should be either  less than  or  upto 3 dB above ambient noise level.  This can be problematic in a residential areas.  I live next to a main road and railway line, fat chance of hearing anything else other than those noises! So was a pointless exercise   

And this is true despite what retailers and/or installers might tell you. Remember it's the homeowner's responsibility to comply with planning regulations. And this is what they are.