This is one of the most common questions I get from HVAC owners, and the honest answer is that they do different jobs. Asking which is better is a bit like asking whether you need a wrench or a screwdriver. It depends on what you’re trying to fix.

Here’s how I think about it.

What’s the real difference between Google Ads and Facebook Ads?

Google catches demand that already exists. Someone types “AC not cooling” or “furnace repair near me.” They have a problem right now, and they’re picking someone to call. Your ad shows up at the moment they’re deciding.

Facebook and Instagram create demand. Nobody opens Facebook looking for an HVAC company. Your ad shows up while they’re scrolling past photos of their cousin’s vacation. It works when you give them a reason to think about their system before it breaks.

Both can bring you jobs. They just bring different jobs.

Which should an HVAC company start with?

For most HVAC companies, Google. Repair calls are where the money starts, and repair customers search.

There are two kinds of Google ads to know about:

  • Local Services Ads. These show at the very top, often with a badge after Google screens your business. You pay per lead, not per click, and you can dispute some leads that aren’t real. If you qualify, this is often the easiest place to start. I covered them in the cheapest ways to market a home service business.
  • Google Search Ads. You choose the searches you want to show up for, write the ad, and pay when someone clicks. More control, and more to manage.

Before spending on either, make sure your Google Business Profile is complete and your phone gets answered. Ads only work as well as what they send people to.

When does Facebook make sense for HVAC?

Facebook and Instagram ads are good at things people don’t search for:

  • Tune-up offers in early spring and early fall, before the rush.
  • Maintenance plans. Nobody searches “HVAC membership,” but plenty of homeowners will sign up when they see a clear offer.
  • Reaching past customers and website visitors again, so they remember you when something breaks.
  • Showing who you are. A short video of you explaining something simple builds trust in a way a search ad can’t.

Facebook is usually weaker for emergency repairs. When someone’s AC dies in July, they’re not waiting for an ad to show up in their feed. They’re searching.

Are Facebook leads lower quality?

They’re different. Facebook lead forms make it very easy to tap a button and submit your info, which means more leads, but more of them are casual. Someone who taps “get a quote” between videos is less committed than someone who searched, read your site, and called.

That doesn’t make them worthless. It means:

  • Call them fast. Within minutes if you can. Interest fades quickly.
  • Ask a qualifying question in the form, like the age of their system or what they need.
  • Judge Facebook on booked jobs, not on lead count. Lots of cheap leads that never book cost more than a few good ones.

How do I decide where to put more money?

Track the same number for both: cost per booked job. If you’re not sure how, here’s how to tell whether your marketing is worth the money.

A simple way to start:

  1. Put most of your budget into Google (Local Services Ads, Search Ads, or both) for repair and replacement.
  2. Run a smaller Facebook budget for one clear offer, like a fall tune-up.
  3. After a couple of months, compare cost per booked job for each.
  4. Move money toward whichever is winning, and keep the other running at a level that still pays for itself.

What do both need to work?

  • A phone that gets answered. Every unanswered call is an ad you paid for that went nowhere.
  • A page built for the ad. Send search ads to a page about that service, not your home page.
  • A clear offer. “Quality HVAC service” doesn’t give anyone a reason to call. “Same-day AC repair, upfront pricing” does.
  • Tracking. Separate phone numbers or tracked forms for each, so you know what’s working.

Where to start

If you’re not running any ads yet, start with Google, and check whether you qualify for Local Services Ads. Once those are bringing in booked jobs and you’re tracking them, add a small Facebook campaign with one clear seasonal offer. Then let your own numbers tell you where the next dollar goes.