AI receptionist for HVAC companies You’re in an attic when the phone rings. It still gets answered.
A no-heat call at 7 PM doesn’t leave a voicemail. It calls the next company. Stack Space picks up when you can’t, day or night, books the visit, and sends your quote and the invoice. You price the repair and your techs do the work.
About 30–60% more bookings at our founder’s family tree service since the receptionist started answering the phone.
Free setup: book a 30-minute demo, then sign up, and the founder sets up your account with you and trains you on it, free.
From $125/mo, no contracts, cancel in two clicks. Starter answers 24/7 and includes 250 voice minutes, about 63 to 125 answered calls a month. More minutes are 100 for $24, only when you buy them. You pay first and payments aren’t refundable (terms, §5).
What changes in your week
Before After-hours calls go to voicemail, and the customer calls the next company.
The receptionist answers after hours too, and books the visit on your calendar.
Before Repair and replacement quotes get written up at night.
You set the price and the quote goes out in your brand right then. They approve it from a link.
Before The job is done, and the invoice waits until Friday.
Mark it done and the invoice goes out with a pay button. Connect card payments once and they can pay by card.
How the AI receptionist works, from the first call to the booked job →
Built on a tree service. Here’s what it did there.
We don’t have numbers from an HVAC business to show you yet. These are from our founder’s family tree service near Lansing, Michigan, the first business to run on Stack Space.
All approximate, from the family business’s own count, with no published baseline. Your numbers will depend on your trade and your calls. Read the case study
Skip the sales call. Take one from the receptionist Stax trains instead.
Type your number and the receptionist Stax trains calls you back — usually within a minute between 8am and 8pm your time. Ask it anything about your business. Try to stump it.
Other trades
Answer the next call. Win the next job.
One login, one bill — and a staff that answers the phone while you sleep.
Free setup: book a demo, then sign up, and the founder sets up your account with you and trains you on it, free.
From $125/mo · No contracts · Cancel in two clicks
You pay first and payments aren’t refundable — cancel whenever and you keep access through the period you already paid for (terms, §5).
Want to hear it first?