What this is: a senior HVAC/R tech you can talk a fault through with. Give it the symptoms and your readings — it answers with a few targeted checks at a time, and can look up manuals and fault codes for a model you name. Attach a photo of a nameplate, controller or fault display with the 📷 button. What it isn't: a substitute for your licence, the regulations, or your own judgement. Sessions are capped so it stays a targeted consult, not a chat.

Your message and any attached photo are sent to an AI service to generate a response — describe the job, not the customer, and leave out client names/addresses.