The 5 Follow-Up Emails Every HVAC Contractor Should Send After a Service Call

You just installed a new AC unit. The customer is cool and comfortable. You shake hands, pack up the van, and drive to the next job. That customer will probably never hear from you again — until their system breaks in 3 years and they Google "HVAC near me" instead of calling you back.

This is how most HVAC businesses lose repeat customers. Not because the work was bad, but because they went silent.

The fix is simple: five emails over 60 days. Here's the exact sequence, with templates you can copy and personalize.

Why Email Works for HVAC (Better Than You Think)

HVAC contractors often dismiss email marketing. "My customers don't read email." "HVAC is a call-based business." "I'm too busy to send emails."

Here's the reality:

• •Email open rates for service businesses average 25-35% — that means 1 in 3 customers reads your follow-up
• •It costs 5x more to get a new customer than to keep an existing one — a simple email sequence flips the math in your favor
• •80% of HVAC revenue comes from 20% of customers — the ones who come back every year for maintenance, replacements, and referrals

You don't need a marketing degree. You need 5 emails and a system to send them.

Email 1: The Thank You (Send Same Day)

When: The day of the service call Goal: Leave a positive last impression

This email has one job: make the customer feel good about choosing you. No ask, no sales pitch.

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Subject: Thanks for choosing [Your Company], [First Name]!

Hi [First Name],

Thank you for trusting [Your Company] with your [service — e.g., AC repair, furnace tune-up] today. We know you have plenty of options, and we don't take that for granted.

If anything doesn't feel right or you have questions about what we did, call us directly at [phone]. We stand behind our work.

Have a great evening, [Your name] [Your Company]

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Why it works: Most HVAC companies send an invoice and disappear. A simple thank-you email immediately sets you apart. It also opens the door for the customer to report issues early — before they turn into bad reviews.

Email 2: The Review Request (Send Day 1)

When: 24 hours after the job Goal: Get a Google review

The next morning, your customer has had a full night in a comfortable house. The AC is working, the furnace is quiet. This is when they feel most grateful — and most likely to leave a review.

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Subject: Quick question, [First Name] — how did we do?

Hi [First Name],

Hope you're enjoying your [newly repaired AC / warm house / new thermostat] — we sure enjoyed getting it sorted for you.

If you have 30 seconds, would you mind leaving us a quick Google review? It helps families in [your city] find an HVAC company they can trust when their system goes down.

[Leave a Review → direct Google review link]

Either way, thanks again for your business. We're here whenever you need us.

Best, [Your Company]

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Why it works: The ask is specific (30 seconds), the motivation is altruistic (help other families), and the link goes directly to the review form. No searching, no friction.

Pro tip: Use your Google Business Profile's "Ask for reviews" short link. It opens the review popup directly.

Email 3: The Check-In (Send Day 7)

When: One week after the job Goal: Build trust, catch problems early

This is the email most contractors skip — and it's arguably the most valuable.

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Subject: Everything still running smoothly, [First Name]?

Hi [First Name],

It's been about a week since we handled your [service], and I wanted to check in. Is everything working the way it should?

If you've noticed anything off — weird noises, temperature fluctuations, anything at all — just reply to this email or give us a call. It's much easier to catch small issues now than after they snowball.

No news is good news, but we're always here if you need us.

[Your name] [Your Company]

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Why it works three ways:

1. 1.It catches warranty issues early — fixing a small problem now costs you less than a callback later
2. 2.It shows you care beyond the sale — customers remember this
3. 3.It's a soft second chance for reviews — customers who forgot to leave a review last week often do it now

Email 4: The Re-Booking Reminder (Send Day 30)

When: 30 days after the job Goal: Generate repeat business

Most HVAC systems need seasonal maintenance. But customers don't think about their AC in October or their furnace in April — until it breaks. This email puts you top-of-mind at the right time.

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Subject: Time to think about [seasonal maintenance], [First Name]?

Hi [First Name],

It's been about a month since we took care of your [service], and we wanted to give you a friendly heads-up.

[Choose the relevant version:]

For cooling season: Summer is coming, and this is the perfect time to schedule an AC tune-up. A quick maintenance visit now can prevent breakdowns during the hottest weeks — and save you money on energy bills.

For heating season: Cold weather is around the corner. A furnace tune-up now means you won't be scrambling when the first freeze hits. Most HVAC emergencies happen because of skipped maintenance.

We'd love to get you on the schedule before things get busy. Just reply to this email or call us at [phone].

Best, [Your Company]

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Why it works: HVAC is seasonal. This email reaches customers when they're not actively thinking about their system — which is exactly when they need the reminder. The framing ("before things get busy") creates gentle urgency without being pushy.

The math: If you service 50 customers a month and 10% rebook from this email alone, that's 5 extra jobs per month — roughly $1,500-3,000 in additional revenue with zero marketing spend.

Email 5: The Referral Request (Send Day 60)

When: 60 days after the job Goal: Word-of-mouth referrals

By day 60, your customer has lived with your work for two months. If everything is running smoothly, they're a satisfied customer with a proven experience. Now is the time to ask for referrals.

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Subject: Know someone who needs reliable HVAC, [First Name]?

Hi [First Name],

We hope you're still enjoying your [service] — it's been a couple of months and we trust everything is running smoothly.

We're a small, local business and we grow mostly by word of mouth. If you have a friend, neighbor, or family member who's been dealing with HVAC headaches — or just needs routine maintenance — we'd love the chance to help them too.

You can share this link and we'll take great care of anyone you send our way: [referral link]

Thanks for being a great customer, [First Name]. We really appreciate it.

Warm regards, [Your Company]

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Why it works: The timing is intentional. At 60 days, the customer has had enough time to confirm your work holds up. The ask is low-pressure ("if you happen to know someone") and positions referrals as doing their friends a favor.

How to Actually Send These (Three Options)

### Option 1: Manual (free, time-consuming) Set calendar reminders after each job. Copy-paste templates from a Google Doc. Personalize and send from Gmail. Realistic for: contractors doing fewer than 10 jobs per month.

### Option 2: Generic Email Marketing (Mailchimp, etc.) Set up an automation sequence. Import contacts manually. Problem: these tools aren't built for service businesses. You'll spend hours configuring triggers, segments, and templates designed for e-commerce.

### Option 3: Purpose-Built Automation Tools like CraftBoop are built specifically for this. You enter a customer name, email, and service performed — the 5-email sequence runs automatically. No configuration, no marketing knowledge needed. Takes 10 seconds per customer.

Whatever method you choose, the important thing is that every customer gets the sequence. The contractors who win aren't the ones with the best emails — they're the ones who actually send them consistently.

Real Numbers: What to Expect

Here's what HVAC contractors typically see after running this sequence for 3-6 months:

These aren't hypothetical. They're the natural result of consistently following up with every customer instead of hoping they remember you.

Common Mistakes to Avoid

1. 1.Sending all 5 emails in the first week — this feels spammy. Space them out over 60 days.
2. 2.Using a no-reply email address — customers who reply to your check-in email are the most engaged. Let them reply.
3. 3.Writing corporate-sounding emails — you're a local contractor, not a Fortune 500 company. Write like a human.
4. 4.Only emailing happy customers — every customer gets the sequence. The check-in email (day 7) is your chance to catch unhappy ones before they leave a bad review.
5. 5.Quitting after 30 days — the results compound over time. Month 1 is planting seeds. Month 6 is harvest.

The Bottom Line

Five emails. Sixty days. Every customer.

That's the entire system. You don't need a marketing team or a big budget. You need a follow-up system that runs for every single customer, every single time.

The HVAC contractors who do this for a year straight end up with more reviews, more repeat business, and more referrals than competitors who spend 10x more on Google Ads.

Start with your next customer. If you want to automate it, CraftBoop runs the whole sequence for $19/month. If you'd rather do it manually, the templates above are yours to use.

Either way — stop going silent after the job.