# HVAC brand grows revenue 20% by answering every call with AI

Yost & Campbell, Granite Comfort's pilot brand, lets Avoca answer the calls the shop used to miss. Revenue is up 20% year over year, which the president says is mainly because of those answered calls. Over 50% of bookable calls are booked end to end by AI.

Category: Speed to lead
Industry: HVAC, Home services
Difficulty: moderate
Updated: Oct 27, 2026
URL: https://revstackai.co/use-cases/hvac-brand-grows-revenue-20-percent-by-answering-every-call-with-ai

## Problem

Calls go unanswered, so those customers hire someone else.

## How to do this

1. Avoca (no public price, talk to sales)
2. Your inbound phone line
3. A schedule the AI can book into

## Verdict

The calls that used to ring out become booked jobs.

## Tools

- [Avoca AI](https://www.avoca.ai/): Answers the call and books the job


## Result

Revenue up 20% year over year. Over 50% of bookable calls are booked end to end by AI. "up by 20% in revenue thus far from prior year. That that is mainly because of Avoca being able to service more customers as opposed to in the past, not being able to answer the calls."

Vendor source. Reported by [Sam Akinnoye, President, Yost & Campbell (Avoca)](https://www.avoca.ai/customers/granite-comfort).

## Before you start

- Avoca (no public price, talk to sales)
- Your inbound phone line
- A schedule the AI can book into