I Built SlotLock: Turning HVAC Inquiries into Confirmed Appointments in Under 2 minutes

It's 85°F in Denver and a homeowner's AC just quit working.

They Google "AC repair near me" and call the first shop that shows up.

That shop is Ironwood Heating & Air, an independent owner-operator business running 4 to 6 service vans for heating, cooling, heat pumps, and seasonal maintenance. The owner is on a ladder, the lead tech is in a crawlspace, and there's no receptionist. The call goes to voicemail, and the homeowner calls the next company on the list.

Ironwood is a hypothetical client, but the problems are very real for small home-service businesses.

The Problems

•󠁏 Missed calls mean lost revenue.

󠁯•󠁏 When an AC is out, whoever answers first wins the job.

Phone tag. Even a returned voicemail takes 4 to 6 calls and texts to confirm the service area, the equipment, and when someone will be home.

Evening admin overload. The owner spends 2 to 3 hours every night entering appointments, sending reminders, handling reschedules, and answering "When will the tech arrive?"

The Solution: SlotLock

SlotLock is a diagnostic booking and dispatch platform for residential HVAC contractors. It turns an inbound inquiry into a confirmed arrival-window appointment in under 2 minutes.

How it works:

Instant ZIP check. Homeowners enter their ZIP first. If it's outside the service area, they find out right away, which also protects technicians from unprofitable drives.

Conversational triage. A chat assistant (or a guided selector) captures equipment age, brand, error codes, and safety flags like a gas smell or a carbon monoxide alarm.

Guaranteed slot-lock. The homeowner picks an arrival window and gets instant confirmation. A temporary hold prevents double-booking.

Zero-touch dispatch. The booking lands on the contractor's dispatch board with technician assignment, customer notes, and route grouping. Confirmations and arrival updates go out automatically.

The Impact

Missed calls turn into self-booked jobs, 24/7

Techs arrive informed, with the right details before the truck rolls

No more phone tag or manual data entry

The owner gets their evenings back

The Takeaway

Small service businesses don't lose jobs because they're bad at their trade. They lose them because they can't be in two places at once.

SlotLock is the second place: always available, always accurate, and always feeding the dispatch board.