Thermoi Voice: The AI Phone Assistant Built for HVAC
Stop losing revenue to missed calls. Thermoi Voice answers every call, qualifies leads, and books appointments automatically, 24 hours a day, 7 days a week.
The Hidden Cost of Missed HVAC Calls
Every call that slips to voicemail is a job the fastest competitor books instead. At an average service value of $350, those missed calls add up quickly.
How Thermoi Voice Works for HVAC Contractors
Purpose-built AI that understands HVAC terminology and the way contractors take calls.
Never Miss a Call
Our AI answers every call, 24/7/365. No more lost leads to voicemail or busy signals during peak season.
Natural Conversation
Built specifically for HVAC calls, so the questions it asks are the ones your shop needs answered. It tells the caller it is an AI assistant up front, then gets on with the conversation.
Books on the Call
Agrees a service time with the caller and records it with the customer, the service type, the address and the arrival window in your Thermoi dashboard.
After-Hours Coverage
Capture those 2 AM calls when furnaces fail or AC units break down. Roughly a third of calls arrive after hours, and those callers are the likelier ones to book (CallRail 2025).
Lead Qualification
Asks what the caller needs, where they are and how soon, and captures the answers in their own words so you can decide what to work first.
Professional Service
Consistent, friendly, professional responses every time. No bad days, no hold times, no missed opportunities.
Why HVAC Contractors Choose Thermoi Voice
Built specifically for HVAC contractors who want to capture every call, read what was actually said, and stop losing revenue to voicemail.
- Every call answered, including nights, weekends and holidays
- Recover lost revenue from after-hours and peak-season calls
- Live appointment booking while the customer is still on the phone
- The caller’s name, number, address and problem captured every time
- A summary and full transcript of every call, by email or Slack
- One setup call, with nothing for you to install
Ready to Stop Losing Calls?
Book a free 15-minute demo and see exactly how Thermoi Voice will work for your HVAC business.
Frequently Asked Questions
How does Thermoi Voice handle emergency calls?
It answers them, which is the part usually lost to voicemail. Sara takes the caller’s name, number, service address and their own description of the problem, and books a time if they want one. When the call ends you get a summary and the full transcript, and you can have them emailed or posted into Slack. What it does not do: nothing scores or classifies a call as an emergency, and there is no SMS, no automated callout and no escalation chain. You decide what is urgent from the caller’s own words.
Will customers know they're talking to an AI?
Yes, and we tell them. Sara says she is an AI assistant in her first sentence, before the caller starts explaining the problem. The conversation itself is natural, and you choose the business name and greeting she opens with.
How quickly can I get started?
Setup is one call. We configure the agent with your business name, services and how you want the phone answered, then you forward your number when you are ready. Bookings land in your Thermoi dashboard — they do not write into an external calendar or CRM today.
What happens to my existing phone number?
You keep your existing business number. Thermoi Voice works alongside your current setup, answering calls when you're unavailable, after hours, or during high-volume periods.
Keep exploring
Answer every call around the clock.
The 2 AM no-heat call gets answered, not sent to voicemail.
Agree a time on the call, recorded with the address.
Every caller asked what they need, where they are and how soon.
Plans from $299/mo, no contracts.
Thermoi vs. answering services and rivals.