Renewable Heating Hub Heat Pump Forums

Search with Wattson
Forums
Renewable Heating
Air Source Heat Pum...
Concerned about run...
 
Notifications
Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

Concerned about running costs for our 2019 ASHP

 
Air Source Heat Pumps (ASHPs)
Last Post by BU 5 years ago
4 Posts
3 Users
6 Reactions
2,461 Views
RSS
 Caroline2000
(@caroline2000)
Active Member Member
Joined: 5 years ago
Posts: 11
Topic starter 27/10/2021 7:37 pm   [#203]

Hi all,

we have an ASHP - fitted May 2019 (previously Gas, heating via warm air ducted heating)

We did a full renovation and opted for ASHP (partner works in oil & gas and felt that this was best way forward!)

We get the RHI - thankfully!

But we are using between 18 and 22 thousand KWh each year......it’s costing a fortune.....

We have underfloor heating downstairs and oversized radiators upstairs......

Any ideas to make the house warmer and reduce the costs would be helpful/welcome!



   
Like
2
Quote
Mars
 Mars
(@editor)
Replacing my heat pump
Illustrious Member Admin
Joined: 6 years ago
Posts: 4999
27/10/2021 8:27 pm  

@caroline2000 we’re all facing an expensive winter this year with tariffs that are sky high. The only way to reduce costs is to drop the flow rate temperature. We dropped ours from 45C to 40C and have seen our COP rise to over 3 from our 2.7. This means we’re running more efficiently and using less electricity.

Is the insulation in your house good?


Dad’s Outside with the Heat Pump Again
He wanted to save the planet. His family just wanted him to come inside.
Get the book → · Free UK shipping
The Ultimate Guide to Heat Pumps · Britain’s Heat Pump Shitshow
Heat Pumps Explained · From Zero to Heat Pump Hero · Bodge Buster
From Zero to Heat Pump Hero and Bodge Buster are rewritten and updated for 2027.
New to heat pumps? Heat Pump Fundamentals course — 50% off with INTRO50.


   
ReplyQuote
 Caroline2000
(@caroline2000)
Active Member Member
Joined: 5 years ago
Posts: 11
Topic starter 27/10/2021 10:12 pm  

Thanks......it was expensive before the rise in electricity costs!

Supplier has gone bust but at least covered by energy cap which is something!

Downstairs is suspended floor; but as insulation between joists held by ‘baskets’....advised by installer, then wet underfloor heating. 

Insulation for roof is all new so I’m hoping is good!

Walls.....not sure.....some are the existing walls of old house (built around 1965), other new walls have up to scratch insulation so again hopeful this would be enough.

Looking to get external render done (need to save up some cash) - hopeful this may help with improving insulation?

We’ve not hot heating on at the moment as we needed to fix some tiling so need to keep it off.....surviving with biomass fire!

On a positive at least this is saving us some money......

Once back on I’ll make sure flow rate temp is as low as it can be.

Biggest issue seems to be that we can’t seem to get the house warm......even when spending a fortune!



   
Like
2
ReplyQuote
 BU
(@heacol)
Prominent Member Contributor
Joined: 5 years ago
Posts: 415
27/10/2021 10:32 pm  

@caroline2000 It is usually quite simple to correct the installation. Firstly I would need some information.

What is the make and model of your heat pump?

Do you have system seperation or a 4 pipe buffer?

Do you habe pumps and blending valves on your manifolds?

Is your under floor heating zoned to heat each room at a different temperature?

Unless the house is lealing and very drafty, adding external wall insulation and any more than 200mm of loft insulation is a wast of money and you will not see a return.

Your flow temperature at this time of year should be arround 25 Geg C, if you are running it at 40-45  that is where you problem is.

We have installed heat pumps in large solid stone houses with single glazing with heating bills of under £1000.00 a year (+-14p/kwhr)



   
Like
2
ReplyQuote
Forum Jump:
  Previous Topic
Next Topic  
Share:

SPONSORS

Join Us!

Installer Finder

Degrees of Separation

Latest Posts

SPONSORS

Members Online

Click to access the login or register cheese
Protected By
Shield Security PRO