Hi all thankyou.

I'm near Malmesbury. I don't have another controller apart from the little box thing? I used to have the water tank in the loft but it was small and not holding enough hot water or something, so they put a larger one in my downstairs cupboard but I've got a feeling the controller unit is still up through the loft hatch? ( That's where heating engineers go, anyway?)

I,ll try to take some pics of stuff and post. Thankyou all so much.

You are all so kind, thankyou so much .

Posted by: @winnie-wicket

Hello everyone.

I'm not at all technically minded and am disabled cognitively so please bare with me.

I am a social housing tenant and I live in a 2 bed small detached bungalow built in the 60s in a very rural place. About 3 years ago my housing association took out my economy 7 and replaced it with air source heating. Daikin I think it's called.

I have 4 small solar roof panels and a solar boost to heat up hot water.

It's been very very expensive to run this heating and my landlords can't explain why it's costing me more in electric than the 5 bed house opposite me .

There is no underfloor heating here, Radiators were changed but only one seems extra large, the rest look normal, landlords are saying it's well insulated etc, double glazing. There are air bricks all around the outside though, about 10 or 12 in total.

My energy supplier, based on last winters usage, wants 400 a month from me. I know prices have risen and cost of living etc but I can't afford to turn this heating on now at all .

3 different people who have come to look at the heating have said this system is expensive to run and known for that. My landlords say it's because I don't have carpets apparently, I have laminate and rugs. The bungalow has suspended floors.

Landlord says loft and cavity wall insulated. Double glazing.

The heating never seemed to warm the place up properly, yet costs a fortune to run.

This winter I've had to make the choice not to use the central heating at all so I have got a couple of small oil filled mobile radiators that I will use, but I'm dreading winter.

Please can someone tell me WHY this heating has always been so expensive to run, I've never got on with it, been told various things like it's calling for heat all the time it's on because it's never reaching temperature, heats going straight through floor etc, that the system is not suitable for this property, but my landlords insist it is.

I am dreading the winter, I couldn't cope last time yet alone this time. Please can someone talk to me about this heating, why it's so expensive.

I've just told my landlord I am not even turning it on this winter but they say I have to or pipes will freeze?  I have no log burner or open fire here.  Are oil filled rads enough?

It's a Daiken system air source.

Please can someone try to explain this system to me and why it's so so expensive to run.

Thanks so much. 

@winnie-wicker Your house sounds quite similar to ours and we too replaced E7 heaters with an ASHP.  Although our house sounds bigger, at current prices we use about half the energy you do.  We are very rural 3/4 bed bungalow, have suspended floors, lots of air bricks and mostly wood flooring.  Our floor is insulated under the wood though.  Do you know how much electricity you used per year when you had E7 heaters?  Also, do you have the latest Energy Performance Certificate (EPC)? As a tenant your landlord has to give you one.  That has the annual heating demand in kWh for your house and will give you an idea what to expect.  Let us know and we'll tell you where to look. If you don't have one you can go online and get it.    

https://www.gov.uk/find-energy-certificate

Hot water is sometimes the culprit for using a lot of energy if not set up properly.  Do you know how hot your hot water is and roughly how much you use? Lots of hot baths will be expensive.

To other responders; it's very likely the HA is claiming RHI and if they are there should be MCI documentation available for the design and installation. @editor I seem to remember you had a contact in Ofgem?

@kev-m, no contacts at OFGEM I'm afraid, but I can find people easily enough. Are they they custodians of installation drawings?

this is the controller I have and this is a picture of a controller on the water tank.

I don't take lots of baths, maybe a few times a week, I mainly shower. 

this is the controller I have and this is a picture of a controller on the water tank.

I don't take lots of baths, maybe a few times a week, I mainly shower. 

My EPC rating is C .  After my last complaint, the heating engineer boss said he think he,ll change it to D but he never did and it's still C

• @winnie-wicket not a million miles from me in Trowbridge. Happy to pop over and cast an eye over it, even if it’s to draw up a schematic and/or make sense of what’s there so I can communicate it in a technical manner to the rest of the forum. It would need to be the weekend of the 14th November as I’m pretty full till then.

That's very kind of you, thankyou!  I wouldn't expect you to do that though, hopefully with the help of this forum if explained simply, I will sort this. I can't believe how kind you are to offer though so thankyou so much!  The display on the water pump says 44 by the way, I can't access it again at the moment to take a clearer picture.

If I don't turn it on at all, the pipes won't freeze then? Would getting more oil filled radiators and only using them work out a lot cheaper?  I've been told oil filled radiators won't use as much electricity as air source, is that true? 

Air source should use 3-4x less electricity than oil filled or electric radiators. 

but it has to be set up correctly

If that 44c on your display is the flow temp that’s very high for the current mild temps. Mines at 29c. So sounds like it needs setting up properly. The hotter that flow temp is the more inefficient it is. 

How do I turn that number down? Sorry I get confused 

Posted by: @winnie-wicket

That's very kind of you, thankyou!  I wouldn't expect you to do that though, hopefully with the help of this forum if explained simply, I will sort this. I can't believe how kind you are to offer though so thankyou so much!  The display on the water pump says 44 by the way, I can't access it again at the moment to take a clearer picture.

Well, the offer stands. No charge, obviously.  If you want someone to pop over and take a look and explain how things work then just ask.