The $69 AC Tune-Up That Sold a $9,000 System

Last spring, an HVAC contractor in Charlotte ran a simple email campaign. Subject line: “Your AC is about to work overtime – ready?” Body: brief note about summer prep, plus an offer for a $69 tune-up. Sent to his list of 1,200 past customers.

78 people booked. From those tune-ups, his techs identified 11 systems that were on their last legs – old R-22 units, failing compressors, leaky coils. Eight of those homeowners replaced their systems that summer. Average ticket: $8,700.

That is $69,600 in replacement revenue – from a single email that took 20 minutes to write.

One-time customers are leaving money on the table. The contractor who builds repeat relationships through simple, consistent outreach? He is playing a different game entirely.

The Numbers Do Not Lie

Acquiring a new customer costs 5-7x more than retaining an existing one. A homeowner who had a good experience with your company is 60-70% likely to call you again – if you stay visible.

Email and SMS keep you visible. Not in an annoying way. In a helpful, “oh yeah, those guys were great” way.

Automated Nurture Sequences: Set It Once, Reap Forever

Day 1: Thank you. “Thanks for trusting us with your water heater replacement. If anything does not feel right, call us.”

Day 7: Review request. “Hope the new water heater is working great. We would appreciate a Google review: [link]”

Day 30: Maintenance tip. “Quick tip: flush your water heater once a year to extend its life.”

Day 90: Check-in. “Just checking in – everything still running smoothly?”

Day 180: Seasonal offer. “Winter is coming – book your furnace inspection before the rush. $20 off for past customers.”

Five touchpoints over six months. Automated. Zero ongoing effort.

Seasonal Reminders: Be the Guy Who Remembers

Spring: “Schedule your AC tune-up before the first heat wave.” Summer: “Change your filters monthly during peak AC season.” Fall: “Furnace inspection time.” Winter: “Frozen pipes are no joke. Here is how to protect your plumbing.”

These emails are not salesy. They are helpful. And when the seasonal need hits, your phone rings.

SMS for Urgent Offers: The Nuclear Option (Use Sparingly)

Reserve SMS for: urgent seasonal offers with a deadline, weather-related offers, referral programs, and emergency availability.

Frequency cap: 2-3 SMS per month maximum. Any more and you are spam.

Turning One-Time Into Repeat: The Math

A customer who calls you once is worth $500-$1,200 in average ticket. A customer who calls you three times over five years? $1,500-$3,600. Add a major replacement in year four? $10,000+ lifetime value.

Email and SMS are how you capture that lifetime value. Not by being pushy. By being present. Helpful. Top of mind.