HVAC SEO Companies Directory

Check their client work yourself. It takes twenty minutes.

This is the criterion worth the most on our leaderboard and the one you can verify without anybody's permission. Here is exactly how we do it, so you can run it on a shortlist we have never seen.

What counts as a case study

Three things, and all three have to be present. The business is named. The trade is stated. There is a number attached to a period of time.

Miss any one and it stops being checkable. "A regional HVAC company grew organic traffic 150%" has a number and a period and no way to confirm either. "We have served 600 contractors" has a name for nobody. Of the twenty-four companies we scored on 12 September 2026, 6 clear this bar properly and 2 publish no case study at all.

The check, step by step

  1. Confirm the client is a real trading business

    Search the exact business name plus the town. You want a live website, a Google Business Profile with recent reviews, and a phone number. A named client you cannot find is worse than an anonymous one, because somebody chose to print that name.

  2. Check the timing against the claim

    If the case study says results inside six months, look at when the client's website was last rebuilt and when their reviews started arriving in volume. The Wayback Machine will show you roughly when the site changed. A "six month" result on a site that was rebuilt three years ago is measuring something else.

  3. Work out whether the agency is still on the account

    Look at the client's current site footer and page source for the agency's name or tracking. Case studies stay up long after clients leave. A four-year-old success story about a client who moved on in year two is a fact about the past.

  4. Ring one

    This is the step everybody skips and it is the one that works. Owners of named reference clients generally take the call, because they agreed to be a reference. Ask three things: what the reporting is actually like, who they speak to each month, and whether anything got worse. The third question is the one that gets you a real answer.

What a good answer sounds like

You are not looking for a perfect record. You are looking for whether the number in the case study survives contact with the person it belongs to. The strongest version we found in this field is a set of recorded owner interviews where the client says the figures themselves and the agency leaves in the qualifiers, including where the owner says marketing was one part of the growth rather than all of it. That is Plumbing & HVAC SEO.

The three answers that should end the conversation

  • "We can't share client names, it's confidential." Sometimes true for one client. Never true for all of them. An agency with a decent record has references who volunteered.
  • A screenshot of a traffic graph with the axis cropped. A line going up with no numbers on it is a drawing.
  • Results with no period attached. "300% increase" over what, and from what starting point. Tripling four calls a month is four extra calls a week and is worth saying plainly.

Where TradeOps Consulting lands on this rule

TradeOps Consulting now scores four out of five here. It publishes named HVAC client write-ups that clear the identity and trade checks. Plumbing & HVAC SEO still carries the deeper public record, with ten recorded client interviews and stated figures.

The full methodology explains what happens to the ranking when that changes.