← All use cases · Plumbing, HVAC & trades
Have a custom AI voice agent answer HVAC calls at night and book the morning
A mid-sized HVAC business owner (Reddit, r/AiTools4Youu)
An Upwork developer built a voice receptionist on Retell AI with the pricing sheet, FAQ and dispatch schedule; it takes the address, triages emergencies, books a tech and texts a confirmation.
See the vendor’s pricing
Advanced · or we do it from $497
Retell AI
The problem
AC breaks at 8 PM, the caller tries the next company if nobody answers.
What happened
The owner says they now capture an extra 3–5 jobs a week (self-reported).
Told by the owner Source: Reddit post by the owner (2026-03-31) · Added 2026-10-13. Results as reported by the source; we haven't independently verified them.
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How to set it up yourself
- List your services, service area, hours and pricing rules in one doc.
- Turn on an AI receptionist (or your field-service app's built-in one) and paste that doc into its knowledge settings.
- Connect it to your real calendar so it only offers open slots.
- Forward missed or after-hours calls to the AI number.
- Review every AI call summary daily for the first two weeks and fix wrong answers.
Copy-paste prompt
You are the receptionist for {BUSINESS}, a {TRADE} business in {CITY}. Answer only from the business info below. Collect name, phone, address and the problem. Offer the next open slot from the calendar. If it's an emergency or you're unsure, take a message and say a person will call back within {X} minutes. Never quote a price that isn't listed.
Business info:
{PASTE}Rather not do it yourself?
We'll set this up in your tools, in your voice, tested. Single use case $497. Satisfaction guarantee: we'll fix it until it works, or refund your setup fee. Terms. We reply within 1 business day.
Get this set upRelated for Plumbing, HVAC & trades
Use an AI receptionist as a 'better voicemail' for off-hours calls
The owner reports mixed caller reactions: many hang up on hearing it's AI, and it once offered days with no availabil…
JobberNotice what customers notice: an HVAC contractor's AI answers after hours
A customer's first-hand account of what an after-hours AI line feels like from the caller's side.
via X post by @JBlunt1018 · 2026-05-12Respond to every inquiry within 60 seconds with an AI lead responder
The owner says close rate went up; also warns DIY Zapier builds took more time than they saved.
via Reddit r/AiForSmallBusinessRunning something like this in your business? Submit your use case and we'll credit you with a link.
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