The 5 Follow-Up Emails Every HVAC Company Should Send After a Service Call
You just finished installing a new AC unit or repairing a furnace. The customer is happy, the job is done, and you're heading to the next call. But what happens after you leave is just as important as the work you did.
The HVAC companies that consistently grow year over year aren't just better at fixing air conditioners — they're better at staying in touch with customers after the job. And the tool they use is simple: a sequence of 5 follow-up emails sent automatically over 60 days.
Here are the 5 emails every HVAC company should send, with templates you can use today.
Email 1: The Thank You + Review Request (Send 2-4 Hours After Job)
This is your most important email. The customer just experienced your service, the house is comfortable again, and they're feeling grateful. Strike while the iron is hot.
Subject: How did we do, [Customer Name]?
Body: Hi [Customer Name],
Thank you for choosing [Business Name] for your [AC repair / furnace installation / maintenance]. We hope your home is comfortable and everything is working perfectly.
If you have 30 seconds, a quick Google review would mean the world to us. It helps other homeowners in [City] find reliable HVAC service when they need it most.
[BUTTON: Leave a Quick Review]
Thanks again for trusting us with your home comfort.
Warm regards, [Owner Name] [Business Name]
Why it works: It's short, personal, references the specific service, and has ONE clear ask with ONE button. No distractions.
Email 2: The Gentle Reminder (Send Day 7)
About 70% of people who intend to leave a review never actually do it. Not because they're unhappy — because they got busy. This email catches them.
Subject: Quick reminder from [Business Name]
Body: Hi [Customer Name],
Just checking in to make sure everything is still running smoothly after your [service type] last week.
If you haven't had a chance yet, we'd still love to hear how we did. Your feedback helps us improve and helps other homeowners find trustworthy HVAC service.
[BUTTON: Share Your Experience]
If anything isn't working right, just reply to this email and we'll take care of it.
Best, [Owner Name]
Why it works: It offers a second chance AND positions itself as a customer service check-in, not just a review nag. The "if anything isn't working right" line shows you care about quality, not just stars.
Email 3: The Referral Offer (Send Day 14)
By day 14, the customer has lived with your work for two weeks. If they haven't complained, they're satisfied. Time to turn them into a referral source.
Subject: Know someone who needs HVAC help?
Body: Hi [Customer Name],
Hope you're still enjoying reliable [heating/cooling] after our visit!
If you know anyone — a neighbor, friend, or family member — who needs HVAC service, we'd love to help them too.
As a thank you for the referral, both you and the person you refer will receive [discount amount] off your next service.
Just share this link with anyone who might need us: [REFERRAL LINK]
We appreciate your trust in recommending us.
Thanks, [Owner Name] [Business Name]
Why it works: Referrals are the #1 source of new business for HVAC companies. Incentivizing both sides (the referrer and the referred) dramatically increases participation. The unique referral link makes tracking easy.
Email 4: The Rebooking Reminder (Send Day 30)
HVAC systems need regular maintenance. Most homeowners know this but don't think about it until something breaks. This email puts you back in their mind at exactly the right time.
Subject: Time for a quick HVAC check-up?
Body: Hi [Customer Name],
It's been about a month since we [serviced your AC / installed your furnace / repaired your system]. Just a friendly reminder that regular maintenance keeps your system running efficiently and can prevent costly breakdowns.
[If summer approaching:] With summer right around the corner, now is the perfect time to schedule an AC tune-up before the heat hits.
[If winter approaching:] With winter on its way, a furnace check-up now can save you from a cold surprise later.
[BUTTON: Schedule Maintenance]
Early birds get priority scheduling — book now and beat the rush.
Best, [Owner Name] [Business Name]
Why it works: Seasonal urgency is real in HVAC. This email creates natural urgency without being pushy. It positions maintenance as smart prevention, not an upsell.
Email 5: The Long-Term Check-In (Send Day 60)
Two months out, this email serves two purposes: it keeps you top-of-mind, and it's one last shot at getting a referral from a satisfied customer.
Subject: Everything still running great?
Body: Hi [Customer Name],
Just wanted to check in — is your [system type] still keeping the house comfortable? We stand behind our work, so if anything needs attention, don't hesitate to reach out.
And remember, if any friends or neighbors need HVAC service, your referral link is always active: [REFERRAL LINK]
Both you and anyone you refer get [discount] off your next service.
Thanks for being a valued [Business Name] customer. We're here whenever you need us.
Best, [Owner Name]
Why it works: It's warm, it reinforces your warranty/guarantee, and it reminds them about the referral program one more time. Some of your best referrals come 2-3 months after the job when a neighbor mentions their AC is acting up.
Setting This Up Takes 30 Minutes
You write these 5 emails once. Then you set them up in an automated system that sends them on schedule after every job. Tools like CraftBoop let you customize templates, set the timing, and add customers with one click. After that, every single customer gets this full 5-email experience automatically.
The HVAC companies doing this consistently report 3-5x more Google reviews, 20-30% more referral leads, and 15-25% higher rebooking rates compared to companies that don't follow up at all.
The work you do on-site earns you the job. The follow-up you do afterward earns you the next five jobs.