HVAC Slow Season Marketing Ideas: 9 Shoulder-Season Plays, Text Templates and a 12-Month Calendar

The best HVAC slow-season marketing goes to people who already know you. Run a maintenance plan drive, text past customers you haven't seen in a year, target homes with systems over 10 years old (furnaces over 15), push indoor air quality, ask for referrals and reviews, and move ad budget to the weeks before the first heat or cold snap, all planned on a calendar.

More on this topic: Marketing, leads and reviews, every guide in one place.

Every HVAC shop knows the pattern: phones ring nonstop in the first heat wave and the first cold snap, then go quiet in April and October. The slow weeks are when you have time to market, and when your techs need the hours. The plays below cost little, lean on customers you already have, and set up the busy season instead of just filling a gap. There's a month-by-month calendar at the end you can copy.

Key takeaways

• Start with past customers. They already trust you and you already have their number. New-customer ads cost more and convert slower in a lull.
• Maintenance plans are the slow-season engine. Sell them in spring and fall so tune-ups fill your shoulder months every year.
• Equipment age is a real trigger. ENERGY STAR suggests considering replacement when a heat pump or AC is over 10 years old, or a furnace over 15.
• Text with consent, keep it short, use your business name and honor STOP.
• Shift ad spend, don't just cut it. Ramp budgets up two to three weeks before your usual first heat or cold snap.
• Put it on a calendar. A plan written in January beats a scramble in April.

9 HVAC slow-season marketing ideas that work for small shops

1. Run a maintenance plan drive

Offer a spring AC tune-up and fall furnace tune-up as a membership: two visits a year, priority scheduling, and a discount on repairs. ENERGY STAR already tells homeowners to check cooling in spring and heating in fall, so the timing sells itself. Every plan you sell this spring books visits into next spring and fall. Offer it on every slow-season call, on every invoice and in a text to anyone who had a repair in the last year.

“Hi Linda, it's Peak Air. Our spring tune-ups are open this month. Members get two visits a year, priority booking in heat waves and 15% off repairs for $[price]/year. Want me to set yours up? Reply YES and I'll send times. Reply STOP to opt out.”

For pricing the plan itself, see how to price HVAC maintenance plans.

2. Text past customers you haven't seen in a year

Pull every customer with no visit in 12 to 24 months. Send one short, useful text, not a coupon blast.

“Hi Tom, this is Peak Air Heating & Cooling. We last serviced your furnace in March 2025. Before summer, want us to check the AC too? I have openings next Tuesday and Thursday. Reply STOP to opt out.”

“Hi Maria, Peak Air here. ENERGY STAR suggests checking your filter once a month, more often with pets. Want us to bring a year's supply on a tune-up visit? Reply STOP to opt out.”

3. Equipment age campaign

Your invoice history knows what you installed and when. ENERGY STAR's guidance is to consider replacing a heat pump or air conditioner more than 10 years old and a furnace or boiler more than 15 years old. A slow-season replacement conversation is calmer than one on a 98-degree day, and you can schedule the install for a week you'd otherwise have idle crews.

“Hi Dave, Peak Air here. Our records show your AC was installed in 2014. Systems that age often still run fine, but this is a good time to plan rather than replace in a rush. Want a free replacement estimate while our schedule is open? Reply STOP to opt out.”

Keep it honest: offer an estimate, not a scare. Some 12-year-old units have years left.

4. Indoor air quality in the shoulder months

Spring pollen and fall heating start-up bring calls about dust, allergies and stuffy rooms. ENERGY STAR lists excessive dust and humidity problems among signs of a system or duct issue. Offer an IAQ check on tune-up visits: filter upgrade, humidity reading, duct inspection. Sell what you can show, not vague health claims.

“Hi Sam, Peak Air here. If dust or allergies are worse this spring, our techs can check filters, humidity and ducts during your tune-up. Want me to add it to your visit? Reply STOP to opt out.”

5. Ask for referrals

Slow weeks are the right time to ask happy customers who they know. Keep any referral reward simple and legal in your state, and never tie it to a review.

“Thanks again for choosing Peak Air, Maria. If a neighbor or friend needs heating or cooling help, send them our way at [number]. We'll take good care of them. Reply STOP to opt out.”

6. Push reviews before the rush

In peak season the office is too busy to ask. Use slow weeks to make sure every recent customer got a review request, and reply to every review you haven't answered. A fresh run of reviews makes your listing stronger just as searches spike. The rules: ask everyone, offer nothing for it. Templates are in our guide on how to get more Google reviews.

7. Change your Local Services Ads and search budget by season

Paid leads tend to cost more when every shop is bidding in a heat wave. Many owners trim budgets in the deepest lull, then raise them two to three weeks before their usual first hot or cold spell so the ads are running when searches jump. Narrow job types in the slow months to the work you want (tune-ups, replacements). Note that Local Services Ads are moving into Google Ads in 2026, which changes how budgets and bids work; our Local Services Ads guide covers it.

8. Commercial and light-commercial tune-ups

Small offices, restaurants and churches near you often have rooftop units no one maintains until they fail. Slow weeks are when your best tech has time to walk in, introduce the shop and offer a twice-a-year service agreement.

9. Follow up on old estimates

Every unsold replacement estimate from the last 12 months is a warm lead. A short note that the schedule is open often revives them. See how to follow up on unsold estimates for scripts.

“Hi Ray, Peak Air here. Last fall we quoted a new furnace for you. Our install schedule is open in the next two weeks if you'd like to go ahead before winter. Want me to hold a date? Reply STOP to opt out.”

Rules for marketing texts

• Text only people who gave you their number and agreed to hear from you. Federal and state rules for marketing texts are stricter than for appointment texts, so check with your attorney before a large campaign.
• Use your business name in every message and include a way to opt out.
• Send during daytime hours in the customer's time zone.
• One message per campaign, plus one follow-up at most.

Month-by-month HVAC marketing calendar

Adjust by a month or so for your climate; a shop in Phoenix and a shop in Minneapolis have different shoulders.

How to measure whether it worked

• Jobs booked per campaign. Use a different reply word or offer per text so you can count.
• Maintenance plans sold in March to April and September to October, compared with last year.
• Tech hours filled in the shoulder weeks.
• Replacement estimates from equipment-age texts, and how many closed within 90 days.

Where CrewRobin fits

A few of these run on their own in CrewRobin. Maintenance plans of 1 to 12 visits a year add each visit as a job 14 days ahead and bill yearly, monthly or per visit, so plan visits fill your shoulder months without a campaign. Every customer whose invoice is paid in full gets one review request text, and good, better, best quotes get follow-up texts on day 2, 5 and 10. Every text lands in one inbox thread per customer, so replies to your reactivation and equipment-age texts are easy to follow up.

Frequently asked questions

What is the slow season for HVAC?

For most U.S. shops it's the spring and fall shoulder months, roughly March to May and September to November, between the cooling and heating peaks. Your exact weeks depend on your climate.

How do HVAC companies get business in the slow season?

Mostly from customers they already have: maintenance plan drives, reactivation texts to past customers, equipment-age replacement offers, follow-ups on old estimates and referral asks.

When should an HVAC company sell maintenance plans?

Spring and fall are the natural times, because the plan's tune-ups line up with those months and the techs have time for the visits.

What age should an HVAC system be replaced?

ENERGY STAR suggests considering replacement when a heat pump or air conditioner is more than 10 years old, or a furnace or boiler more than 15, especially with frequent repairs.

Should I cut my Google ads budget in the slow season?

Many shops trim budgets in the deepest lull and narrow job types, then raise budgets two to three weeks before their usual first heat wave or cold snap.

Put it to work this week

Let maintenance plans and review requests fill the slow weeks while you work the rest of the calendar. CrewRobin is free until your first 10 booked jobs, no card up front. Start free or see pricing.

Sources

Figures from outside CrewRobin were checked against these pages in October 2026. Most industry benchmarks come from vendors and agencies, so treat them as ranges, not rules.

• ENERGY STAR: When is it time to replace?
• ENERGY STAR: Heating and cooling maintenance checklist
• Google Ads Help: Local Services Ads transition to Performance Max