As of 13 August 2026, AI can only partly check whether a smart thermostat works with your boiler.

What to actually do

1. Use a tool built for this

   The route this page recommends

2. Do it yourself

   Second choice

   A chat interface, chat-fluent skill, and roughly 30 minutes until you can act on the result.

   How to actually do it

   1. Open the boiler's data plate or manual and record the exact make and model, then photograph the plate without sharing unrelated personal information.
   2. Record the exact make and model of your existing thermostat, programmer or receiver, and photograph the receiver and its labels with the power isolated only if you can do so safely without removing covers.
   3. Open the smart thermostat manufacturer's official compatibility page and manual, then copy the relevant compatibility, control-protocol and receiver requirements into the chatbot.
   4. Paste the supplied prompt with the boiler details, control details, photographs and copied manufacturer information, and ask it to classify the result as confirmed compatible, confirmed incompatible or undetermined.
   5. Compare every compatibility claim in the answer with the official boiler and thermostat manuals, checking the exact model numbers and not just the product family name.
   6. Send the unresolved questions and the chatbot's evidence summary to a qualified heating engineer before buying or wiring the thermostat.

   Prompt

   I want to check whether a smart thermostat is compatible with my UK heating system before I buy it. Do not guess and do not tell me to connect or alter any wiring. Use only the evidence I provide and clearly label anything that is unknown.
   
   Boiler make and exact model: [boiler make and model]
   Existing thermostat or programmer make and exact model: [model or none]
   Smart thermostat make and exact model: [model]
   Heating system type, if known: [combi, system, regular or unknown]
   Photos or descriptions of the boiler data plate, current controls, receiver and visible wiring: [attach or paste them]
   Links or copied text from the boiler and thermostat manufacturer manuals: [paste here]
   
   Tell me:
   1. Whether the thermostat is confirmed compatible, confirmed incompatible, or cannot be determined from the evidence.
   2. Which control method is involved, such as simple on/off switching, OpenTherm or another protocol, only if the manuals confirm it.
   3. Whether a separate receiver, relay, adapter or wiring change is mentioned by the manufacturer.
   4. Which exact facts or photographs are still missing.
   5. Which claims I should verify on the official manufacturer support pages.
   
   Do not infer terminal functions from an unclear photograph. Do not provide installation instructions. End with a short message I can send to a qualified heating engineer describing the system and the unresolved compatibility question.

   Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.

3. Hand it to a person

   The distant third

   A person who owns the outcome does this end to end, worth it when the failure is dear.