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British Gas vs Octopus Energy vs Heat Geek vs EDF vs Aira vs OVO vs EON.Next vs Boxt

Mars · 2025-11-19T14:19:27Z

This week we brought together five of the biggest names in UK heat pumps, British Gas, Octopus Energy, Heat Geek, EDF and Aira, for one of the most telling conversations we’ve ever hosted. We tackled the big questions homeowners keep asking: Who actually delivers quality at scale? Are high-temperature systems helping… or causing a race to the bottom? What protection do you really have if something goes wrong? And with so many different models and promises, how on earth do you choose? What surprised us most? There was far more common ground than conflict.order to make this thread more encompassing, even though we didn't have OVO, E.ON Next or Boxt on the podcast, this thread is basically dedicated to discussing proposals and offerings from volume installers.

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Air Source Heat Pumps (ASHPs)

Last Post by Batpred 5 months ago

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Mars

(@editor)

Illustrious Member Admin

Joined: 6 years ago

Posts: 4958

Topic starter 15/12/2025 9:45 am

@jamespawhite, if you could be bothered, you could also get a quote from OVO.

https://solar-and-heating.ovo.com/heat-pump-survey/estimate/select-address?utm_source=renewable_heating_hub&utm_medium=partner&utm_campaign=estimate_journey_hp&utm_id=renewable_heating_hub

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Batpred

(@batpred)

Noble Member Member

Joined: 2 years ago

Posts: 1221

13/04/2026 11:41 am

Posted by: @editor

↑

@stevettweed, and can you please get one from OVO?

This is what I got from OVO. At least it was quick..

Price guide for a 4-bedroom home

A heat pump and installation could cost between: £11,500 and £16,500
This is a guide price after the £7,500 government grant* is applied.

8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kW export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; Vaillant Arotherm Pro 7kW; 100Amp head, HA lab on mini PC

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Batpred

(@batpred)

Noble Member Member

Joined: 2 years ago

Posts: 1221

16/04/2026 4:40 pm

Posted by: @jwhite

↑

British Gas 50* design temp

Don’t recall scops but likely close to 400%

Replace 7 rads

200l Valiant standard tank

5kw Valiant HP

Costs 9k

Seems like BG is having a covid epidemic atm, 4 attempts so far for our initial appointment! I am hoping our install will be lower disrupt..

As it is just getting the boiler out, fitting a hot water tank and pressure vessels. Install the heatpump. Runs for pipes and cable all outdoors. Simple electrics.. Perhaps replace one rad.

We have not embarked in the survey phase, we are still working to get into sensible estimate territory. Some folk are asking for over £400 for a survey!

8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kW export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; Vaillant Arotherm Pro 7kW; 100Amp head, HA lab on mini PC

👍

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ASHP-BOBBA

(@ashp-bobba)

Prominent Member Member Professional+

Joined: 2 years ago

Posts: 503

16/04/2026 8:01 pm

Posted by: @batpred

↑

Posted by: @jwhite

↑

British Gas 50* design temp

Don’t recall scops but likely close to 400%

Replace 7 rads

200l Valiant standard tank

5kw Valiant HP

Costs 9k

Seems like BG is having a covid epidemic atm, 4 attempts so far for our initial appointment! I am hoping our install will be lower disrupt..

As it is just getting the boiler out, fitting a hot water tank and pressure vessels. Install the heatpump. Runs for pipes and cable all outdoors. Simple electrics.. Perhaps replace one rad.

We have not embarked in the survey phase, we are still working to get into sensible estimate territory. Some folk are asking for over £400 for a survey!

£300 is average as it takes half a day and travel.

AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.

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ASHP-BOBBA

(@ashp-bobba)

Prominent Member Member Professional+

Joined: 2 years ago

Posts: 503

16/04/2026 8:02 pm

Posted by: @batpred

↑

Posted by: @editor

↑

@stevettweed, and can you please get one from OVO?

This is what I got from OVO. At least it was quick..

Price guide for a 4-bedroom home

A heat pump and installation could cost between: £11,500 and £16,500
This is a guide price after the £7,500 government grant* is applied.

Oh My, average installation is 15k inc Grant so £7500 to pay not 11.5-16.5 to pay.

AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.

👍

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Batpred

(@batpred)

Noble Member Member

Joined: 2 years ago

Posts: 1221

10/06/2026 4:11 pm

Posted by: @jwhite

↑

Most of my radiators while working look rather tatty, some rads are single fin and makes sense to replace them

DOT of -2

My boiler is on the wrong location, about 20 years old and making lots of funny noises 🙂

I already have mains water in my loft, electrics, is fully boarded and easily accessible.

General work required:

Remove boiler from spare room on 1st floor

Remove old hot water tank from 1st floor landing

Remove cold water talk from loft

Install new hot water tank in loft

Install heat pump All pipe work / electrical work

...

Heat geek 40* design temp

400% efficiency heating & hot water

Replace no rads

200l Valiant pure tank 7kw HP (might be able to do a 5kw)

Costs £7.5k

...

Here's the original estimate from Heat Geek:

10kw AroTherm heat pump

200l valiant pure tank

up to 10 rad changes

400% efficiency

Cost - All the options maxed out Estimated £8000, (the estimator tool actually went down recently to £7650)

Just wondering how you went in the end? A guaranteed 400% efficiency including hot water looked pretty good, did you have Heat Geek do the work?

8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kW export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; Vaillant Arotherm Pro 7kW; 100Amp head, HA lab on mini PC

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