Hartzell’s vs Airco Service: HVAC Comparison Oklahoma

Got a quote from Airco and shopping around? Here is how I am different. I am a one-person Master HVAC shop in Kingfisher. Airco is a large multi-location operation. Neither is wrong, but the experience is very different.

Side-by-Side Comparison

Factor	Hartzell’s Heat & Air	Airco Service
Reviews	4.8 stars, 279 Google reviews	2.4 stars, 178 Yelp reviews
Owner-operator	Yes, Dave Hartzell, Master HVAC license	No, multi-location operation
Free Second Opinion	Yes, always free	Not advertised
Pricing transparency	$99 dispatch and $111 diagnostic published	Custom quote only
Service area	Kingfisher and 8 surrounding counties, 60 mile radius	OKC metro
Diagnostic policy	$111 credited toward repair if accepted in 14 days	Varies by call
Tech credentials	NATE, IGSHPA, Mitsubishi Diamond, Trane TCS, BBB A+	Varies by tech

Sources: Google Business Profile for Hartzell’s Heat & Air (4.8 stars, 279 reviews as of May 2026). Yelp public listing for Airco Service Inc (2.4 stars, 178 reviews as of May 2026). Comparison reflects publicly available data only.

Why Customers Switch

Direct access to the tech who does the work

The most common thing I hear from people who came to me after a large company is they could not get answers between visits. With me, the phone number on the truck is my number. If something is wrong after a job, I am the one who comes back, not a different tech reading notes.

Pricing posted before the truck rolls

I publish $99 dispatch and $111 diagnostic on the website. You know what the visit costs before I knock. Larger companies often quote on site after the tech looks, which is fine, but some people want the number first.

Free second opinions on big repairs and replacements

If another company quoted you a compressor replacement, a coil swap, or a full system, I will look at it free. About one in four second opinions I do, the original diagnosis was correct and I tell people so. The rest of the time I find something cheaper or a different fix.

Frequently Asked Questions

Is Hartzell’s smaller than Airco Service?

Yes. I am a one-person Master HVAC shop in Kingfisher. Airco is a large multi-location company. The trade-off is direct access: when you call my number, you get me, not a dispatcher.

Do you service the OKC metro like Airco does?

I cover a 60 mile radius from Kingfisher, which reaches the north and west sides of the OKC metro including Edmond, Yukon, Piedmont, El Reno, and Okarche. For southside OKC, Airco may be closer.

Why are Airco’s Yelp reviews so much lower than your Google reviews?

I will not speak to another company’s reviews. My number is 4.8 stars across 279 Google reviews, all public and verifiable.

How much does a diagnostic cost at Hartzell’s vs Airco?

I charge $99 dispatch plus $111 diagnostic, published on my site. The $111 is credited toward repair if you accept within 14 days. Airco does not publish pricing publicly.

Can I get a second opinion on an Airco quote?

Yes. I offer free second opinions on any HVAC quote from any company. Bring the diagnosis and the price, I will tell you honestly if it makes sense.