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Passiv Smart Thermostat - Help & Forum Support

 
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Last Post by Will H 2 months ago
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 Tim441
(@tim441)
Honorable Member Contributor
Joined: 4 years ago
Posts: 449
Topic starter 12/01/2026 10:31 am   [#2735]

I have a LG Therma V - installed 2020. Controls and data are not great - even if improving in later models. 

I don't have the ability to setup Home Assistant and so far have not found another good option.

I came across Passiv Smart Thermostat which are aimed at many heat pumps

I thought I'd add here as potentially of use to others?

https://pstinstallers.zendesk.com/hc/en-gb/articles/38123827312273-List-of-compatible-heat-pump-models


This topic was modified 7 months ago by Mars

Listed Grade 2 building with large modern extension.
LG Therma V 16kw ASHP
Underfloor heating + Rads
8.7kw pv solar
3 x 8.2kw GivEnergy batteries
1 x GivEnergy Gen1 hybrid 5.0kw inverter
Manual changeover EPS
MG4 EV


   
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Ashp thermostat controls
 Tim441
(@tim441)
Honorable Member Contributor
Joined: 4 years ago
Posts: 449
Topic starter 12/01/2026 10:32 am  

Main website

http://www.passivuk.com/

 


Listed Grade 2 building with large modern extension.
LG Therma V 16kw ASHP
Underfloor heating + Rads
8.7kw pv solar
3 x 8.2kw GivEnergy batteries
1 x GivEnergy Gen1 hybrid 5.0kw inverter
Manual changeover EPS
MG4 EV


   
ReplyQuote
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 4763
12/01/2026 10:42 am  

Thanks @tim441. Interesting timing, as Passiv are a currently an advertising partner on Renewable Heating Hub, so I think I'll partially hijack your thread and transform it into a "Passiv Smart Thermostat – Help & Forum Support" where people can ask questions and I can get the team at Passiv to answer questions anyone has about their products and how they're complimentary to heat pump systems.


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 petch
(@petch)
Active Member Member
Joined: 6 months ago
Posts: 14
13/02/2026 11:36 pm  

How do people like this? I was looking for thermostats that are for ASHP that do not have an ongoing subscription fee 

I also want to know if this can be used with a Grant R290, and if so, do I need the Aerona Smart Controller or could this replace it entirely? 



   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 4763
13/02/2026 11:42 pm  

@petch I’ve not come across anyone yet that’s used these thermostats so can’t comment on that, but @fraser-allison or @will-h might be able to comment on compatibility with your Grant heat pump.


New to heat pumps? Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
🎧 Prefer to listen? Heat Pumps Explained – use AUDIO50 at checkout for 50% off.


   
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 Will H
(@will-h)
New Member Member
Joined: 6 months ago
Posts: 4
18/02/2026 10:41 am  

@petch We are not yet compatible with the R290 from Grant but we do support their R32 units. 

You can find all the models we are compatible with here.

We regularly add new integrations, so hopefully we will support the Grant R290 in the not too distant future!

And you are correct that we don't charge any subscription fees - all the features of the Passiv Smart Thermostat (flow temperature, time of use tariff and solar PV optimisation) are included for free!

 


This post was modified 5 months ago by Mars

   
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 Will H
(@will-h)
New Member Member
Joined: 6 months ago
Posts: 4
05/06/2026 12:24 pm  

We are still working on the Grant R290 - but since my last post we have added support for AUX and Haier heat pumps!



   
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