TL;DR
An HVAC and mechanical company grew from about $12 million to $80 million across an 18-year partnership with GenSales. That provider ran the outbound appointment setting the whole time, and the annual revenue figures are company-reported. The client also expanded from one market to two. The provider has set more than 300,000 B2B appointments since 2002.
How did an HVAC and mechanical company grow from about $12 million to $80 million?
Annual revenue rose from about $12 million to $80 million over roughly 18 years, according to figures the company reported. GenSales ran the outbound appointment setting program through that entire period and shares the account without naming the client. The client is a commercial contractor that performs HVAC work and mechanical construction, and it entered a second market along the way.
| Measure | Company-reported result |
|---|---|
| Partnership length | About 18 years of continuous outbound appointment setting |
| Annual revenue at the start | About $12 million |
| Annual revenue reported now | About $80 million |
| Markets served | One at the start, two now |
The figures are rounded, company-reported numbers, and no single vendor produces that kind of growth alone. Contracting revenue grows on estimating, crews, pricing, and delivered work. The outbound program kept booked first meetings arriving while the client's own team closed and delivered them.
What is an HVAC and mechanical company?
An HVAC and mechanical company installs and services HVAC systems and also performs construction work on larger building projects. In trade usage, the word mechanical signals a sophisticated contractor that takes on construction scope in addition to HVAC service. That is the sense in which the client here carries both labels.
According to the IBISWorld report on heating and air-conditioning contractors, the US industry reached a $159.4 billion market size in 2026 across about 120,000 businesses. Dividing one figure by the other puts the average firm near $1.3 million in annual revenue. A contractor reporting $80 million operates far above that average.
What role did outbound appointment setting play in the company's growth?
The calling program supplied booked, qualified first meetings while the client's own team sold and delivered the work.
Referral flow rises and falls with the construction cycle, and estimators rarely have spare hours for cold prospecting. A managed calling program works cold prospect lists on a callback cadence in the CRM until attempts are exhausted or an appointment is set. Each booked meeting arrives date-and-time-specific, with the client's qualifying questions already answered.
The provider's positioning line, "We Open. You Close.", draws the same boundary. Booked introductions went in, and the client's estimating, pricing, and field execution turned them into won work.
Contractors weighing this model against other outreach options can start with the guide to commercial HVAC lead generation services.
Can appointment setting support expansion into a second market?
The client entered its second market during the 18-year partnership, an expansion the company itself reported. Outbound calling fits market entry because each campaign roadmap sets its own geography and data criteria. A contractor can point calling hours at a new metro with a fresh prospect list built to the same qualification rules.
The demand base spreads across the country. According to the Census Bureau's construction spending release for June 2026, private nonresidential construction ran at a seasonally adjusted annual rate of $745.3 billion.
Multi-market use of the model is already common. GenSales reports private equity firms as one of its larger growth areas, and those firms buy prequalified opportunities for portfolio HVAC and roofing companies across United States markets.
How does GenSales run an appointment setting program for mechanical contractors?
GenSales manages the outbound program and sends only appointments that meet every rule the client designated as required.
- Ideal client profile and roadmap: the program starts with an ideal client profile form and a strategy session that typically lasts one hour. It covers the contractor's market, value proposition, geography, data criteria, decision-maker titles, talking points, and three to five qualifying questions. The result is documented in a campaign roadmap.
- List build: an in-house data department builds the initial prospect database from the approved criteria. Contacts the contractor supplies stay separated from the ones the calling team develops.
- Human manual dialing: no auto dialer or power dialer. A caller dials each number individually, typically 25 to 45 dials per hour, a pace kept deliberately lower than power-dialer volume.
- Contractor-branded calls: caller ID displays a phone number the contractor supplies, and the call represents the contractor in the market.
- Dedicated team: a dedicated account manager and dedicated SDRs, with caller count sized to the monthly calling hours. Update meetings run biweekly or monthly, and a live dashboard shows campaign data.
- Client-defined qualification: the contractor defines the appointment format and the qualification rules during setup, and can change them as outcome feedback comes in.
New client programs launch in about 14 days. The company gives a projection of appointment volume based on its category experience and does not guarantee appointment counts, timing, or money back. The first month normally serves as a ramp-up period for refining the message and the path to decision makers, and appointments can still arrive during that month.
The company reports a 60 to 75 percent show rate on set appointments, and the result depends partly on how promptly the contractor follows up on each one. The commercial HVAC lead generation page covers the trade-specific program details.
Outbound calling also has a compliance side. According to the FTC's Telemarketing Sales Rule guide, most business-to-business solicitation calls are exempt from the Rule. Counsel should still confirm how federal and state calling rules apply before a campaign starts.
Why does an 18-year client relationship stand out?
An 18-year engagement runs about seven times the provider's published average client retention of 2.5 years.
The complaints the provider hears from contractors arriving from other services most often involve irregular appointment volume and appointments that were not fully qualified. A program that survives 18 years of staff changes, market cycles, and budget reviews has kept clearing the client's own bar for a qualified meeting.
The ranking of B2B appointment setting companies covers how national providers compare on caller experience and program structure.
What should an HVAC or mechanical contractor do next?
A contractor weighing outsourced appointment setting can prepare three inputs before talking to any provider.
- Define the ideal client profile: building types, contract sizes, and the decision-maker titles worth an estimator's time.
- Set the geography: the home market, plus any second market under consideration.
- Write the qualification rules: the conditions a booked meeting must satisfy before it earns a calendar slot.
Expanding an HVAC or mechanical business? Schedule a GenSales consultation to set the prospect profile, qualification rules, and target territory before calling starts.
Frequently asked questions
Which companies book sales appointments for commercial HVAC businesses?
National B2B appointment setting firms book sales appointments for commercial HVAC businesses, and several list commercial HVAC on their industries pages. GenSales has set more than 300,000 date-and-time-specific appointments since 2002 with fully US-based callers and runs dedicated commercial HVAC programs. The company's callers dial every number by hand.
How long does an outbound appointment setting campaign take to ramp up?
The first month of a new program normally serves as ramp-up, spent refining the message and the path to decision makers, and appointments can still arrive during that month. Setup work such as list building and caller training comes before launch. Buyers should ask for a volume projection and confirm in writing what the provider does and does not guarantee.
What is the difference between an HVAC contractor and a mechanical contractor?
The labels overlap, and many firms carry both. HVAC contractor usually describes a firm that installs and services heating and cooling systems. Mechanical contractor signals a firm that also performs construction work on building systems. The client in this case study carries both labels, operating as an HVAC and mechanical company.
Did appointment setting alone grow the HVAC company from $12 million to $80 million?
No. The growth the client reported reflects its own estimating, field execution, pricing, and market conditions. The outbound program's contribution was a continuous supply of booked, qualified first meetings for the client's team to win.
David Juris is the Founder and CEO of GenSales, a B2B lead generation and appointment setting company founded in 2002. GenSales reports more than 300,000 scheduled appointments and uses a fully US-based calling team. Connect with David Juris on LinkedIn.