Google Ads for HVAC / Air Conditioning: What Actually Drives Booked Jobs

Most HVAC and air conditioning companies share the same problem with Google Ads: they're paying for clicks that never become booked jobs. The reason is structural. This vertical has a split personality — half the demand is emergency-driven (a homeowner's AC dies in July), and the other half is planned or seasonal (a furnace installation quote in October). Those two demand types require completely different campaign logic, different bid strategies, and different landing pages. Running one generic campaign across both is the fastest way to burn budget in this space.

Emergency AC and Furnace Repair Searches Convert Differently Than Installation Queries

When someone searches "air conditioning repair" or "furnace and heating repair," they're standing in a hot (or freezing) house. They will call the first credible option. Click-to-call rates on these searches are high, decision windows are short, and the person is not comparison-shopping three quotes. They want someone today.

Installation searches — "air conditioning installation" or "furnace and heating installation" — behave like considered purchases. The searcher is collecting estimates, reading reviews, and may take days or weeks to decide. Cost per click may be similar, but cost per booked job diverges sharply because the close rate and timeline differ.

You need separate campaigns for these two demand types. Emergency repair campaigns should run 24/7 with call extensions and aggressive mobile bid adjustments. Installation campaigns can run during business hours with landing pages built for estimate requests, not immediate calls.

Which HVAC Services Justify Paid Search and Which Don't

Not every service you offer belongs in a Google Ads campaign. Here's the split for this vertical:

Worth bidding on:

Air conditioning repair (high urgency, strong close rate, healthy ticket)
Furnace and heating repair (same emergency dynamic, seasonal spikes)
Air conditioning installation (high ticket justifies higher cost per lead)
Furnace and heating installation (same logic — large job value covers acquisition cost)

Marginal or unprofitable in most markets:

HVAC maintenance and tune-up (low ticket, often sold as a retention play to existing customers — the math rarely works when you're paying per click for a service that nets you a fraction of a repair or install job)
Ductwork repair and sealing (low search volume in most markets, and the customers who do search this often need education before they'll commit — long sales cycle on a moderate-ticket service)

Maintenance and tune-ups are better served by email campaigns to your existing customer list or as upsells during service calls. Paying auction prices to acquire a new customer for a low-margin tune-up is almost always a losing trade.

The Negative-Keyword List HVAC Campaigns Need on Day One

HVAC is one of the worst verticals for wasted spend from irrelevant clicks if you don't set negatives immediately. Here's what to exclude before you spend a dollar:

DIY and parts searches: "how to fix," "DIY," "parts," "capacitor," "refrigerant recharge kit," "thermostat wiring diagram," "YouTube"
Career and training: "HVAC jobs," "HVAC technician salary," "HVAC certification," "trade school," "apprenticeship"
Brand-specific equipment research: "Carrier reviews," "Trane vs Lennox," "best furnace brand" (these are research queries, not service-intent)
Warranty and insurance: "home warranty," "warranty claim," "does insurance cover"
Unrelated services: "commercial HVAC" (if you're residential-only), "refrigeration," "walk-in cooler"
Free/cheap modifiers: "free estimate" (if you charge for diagnostics), "cheapest," "free"

Without these negatives active from day one, expect 30–50% of your initial clicks to be completely irrelevant. Review your search terms report weekly for the first month and add negatives aggressively.

The Cost-Per-Booked-Job Math That Determines Whether Ads Are Profitable

Work backward from your average job revenue:

Average ticket for the service (e.g., a residential AC repair might average a few hundred dollars; an installation might be several thousand)
Your close rate on leads — for emergency repair calls, this is often high because urgency drives commitment. For installation estimates, it's lower because homeowners shop multiple quotes.
Your acceptable cost per acquired job — most HVAC operators can spend 10–15% of job revenue on acquisition and stay healthy.

Now work forward from the auction:

Multiply your average cost per click by the number of clicks it takes to generate one phone call or form submission (your landing page conversion rate determines this).
Divide by your close rate to get cost per booked job.

If cost per booked job exceeds your acceptable acquisition cost, either your landing page is underperforming, your close rate on the phone needs work, or that keyword simply doesn't pencil out in your market at current auction prices.

Seasonal Budget Shifts That Match How Homeowners Actually Search

HVAC demand is violently seasonal in most of the country. Air conditioning repair and installation searches spike in late spring and peak in summer. Furnace and heating repair and installation searches spike in fall and peak in winter.

Your budget allocation should follow this curve, not fight it. Bidding the same amount year-round means you're underspending during peak demand (losing jobs to competitors who surge their budgets) and overspending during off-season when search volume drops and cost per lead rises because fewer people are searching but competitors are still bidding.

Set calendar-based budget rules: increase spend 4–6 weeks before your peak season begins, hold through peak, and pull back as volume drops. This isn't optional optimization — it's the difference between profitable and unprofitable campaigns in HVAC specifically because the demand swings are so extreme.

Your Phone Answering Is the Leak That Makes Good Campaigns Look Broken

Emergency repair searches convert to phone calls, not form fills. If those calls go to voicemail during evenings or weekends — exactly when AC failures and furnace breakdowns happen — you're paying for clicks that never become jobs. The ad worked. The landing page worked. The phone rang. Nobody answered.

Before increasing ad spend, audit your call answer rate during nights, weekends, and holidays. A missed call on "air conditioning repair" during a heat wave is a lost job worth hundreds of dollars, and you already paid for the click.

Campaign Structure That Reflects How HVAC Jobs Actually Flow

Build your account around the way customers actually buy:

Campaign 1: Emergency Repair (AC + Heating)

Ad groups split by "air conditioning repair" and "furnace and heating repair"
Call-only ads and call extensions
24/7 scheduling with after-hours bid increases
Tight geo-targeting to your actual service radius

Campaign 2: Installation

Ad groups split by "air conditioning installation" and "furnace and heating installation"
Standard search ads driving to estimate-request landing pages
Business-hours scheduling
Broader match types acceptable here because intent is still strong

Campaign 3 (optional, test only): Maintenance

Only if your maintenance contract value justifies it (lifetime value of a maintenance customer who stays for years and eventually buys a replacement system)
"HVAC maintenance and tune-up" keywords
Tight budget cap until you prove the math

This structure lets you allocate budget where the return is clearest, pause underperformers without disrupting your profitable campaigns, and read performance data cleanly by service type.

Viotto shows you which competitors are bidding on these exact HVAC service searches in your area and where the gaps sit — so you can build campaigns around real local auction data instead of guessing. See your market on Viotto