Cool Talk with Hartzell's | Your HVAC Questions, Answered!
Looking for honest, expert HVAC answers—without the sales pitch? You’re exactly where you need to be.
Cool Talk with Hartzell’s Heat & Air isn't your typical HVAC podcast. With over 45 years of serving homeowners and businesses in Central Oklahoma, our team dives deep into heating, cooling, and geothermal systems, delivering practical advice, real-world stories, and behind-the-scenes HVAC insights you won’t find anywhere else.
Hosted by Oklahoma’s trusted comfort specialists, our episodes cover topics you genuinely care about, including:
✅ Why Your Energy Bills Keep Rising – And actionable tips to lower them
✅ Geothermal HVAC in Oklahoma – How it works and why homeowners love it
✅ Easy DIY Maintenance Tips – Extend your HVAC system’s life and prevent costly breakdowns
✅ Spotting Airflow Issues vs. System Failures – Know what’s wrong before calling for help
✅ Hiring HVAC Technicians – What to expect and how to recognize quality service
✅ Hartzell’s Reputation – Why more homeowners rely on us, backed by decades of trust and an A+ rating from the Better Business Bureau (BBB)
Whether you’re a homeowner, property manager, or simply HVAC-curious, "Cool Talk" gives you straightforward explanations and helpful tips—plus plenty of laughs and field stories that'll make heating and cooling more relatable than ever.
📍 Proudly based in Kingfisher and serving Edmond, Guthrie, Yukon, Mustang, Piedmont, Logan County, Canadian County, Blaine County, Major County, Garfield County, and the greater Oklahoma City metro area, Hartzell’s Heat & Air blends old-school integrity with cutting-edge technology, from digital diagnostics to smart-home HVAC integrations.
Connect with Hartzell’s Heat & Air:
- 📲 Facebook: facebook.com/hartzellsheatair
- 🐦 X (Twitter): x.com/HartzellsHVAC
- ▶️ YouTube: youtube.com/@hartzellsheatair6003
- 💼 LinkedIn: linkedin.com/in/dave-hartzell-7a687515
📧 Contact Us: office@hartzellsheatair.com
Don’t just maintain your HVAC system—understand it.
🔔 Subscribe to Cool Talk with Hartzell’s today, and join countless homeowners choosing comfort with confidence.
📞 Need HVAC help? Call (405) 375-4822
🌐 hartzellsheatair.com
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Episodes
100 episodes
Refrigerant top-offs are an expensive myth
HOST A: Dave, a homeowner called you yesterday because their AC ran fine in May and now the house won't get below 78 in the afternoon. What was your first question? HOST B: How long since the last refrigerant top off. They said two summers ago...
Why adjusting your thermostat costs money
HOST A: Here is the thing nobody tells you about your thermostat. The number on that little screen is probably wrong. Not broken wrong. Strategy wrong. HOST B: That is a strong opening. Walk me through it. I'm Dave Hartzell at Hartzell...
Pick the right water heater for home
HOST A: I want to walk into this one with the conversation that happens on probably forty percent of service calls. Homeowner's water heater is leaking, or it is twelve years old and on borrowed time, and they ask me, what should I replace it w...
Why Experts Refuse Summer AC Tune-Ups
HOST A: It is June 18 in Kingfisher. 96 degrees outside. A homeowner calls Hartzell's wanting to book the $229 tune-up they saw advertised in the spring. Dave tells them no, book it for October or wait until March next year. The homeowner is ir...
Halve Your Power Bill with Geothermal
HOST A: It is the first week of July in Kingfisher. The temperature has been over 100 degrees for 8 days straight. A homeowner in a 2200 square foot ranch on a slab opens their OG&E bill. 340 dollars. Their neighbor across the street, same buil...
Should you repair or replace your AC?
HOST A: It is the first week of June in Kingfisher. A homeowner calls Hartzell's. Their 12-year-old AC is running but warm air is coming out of the vents. Dave diagnoses a failed compressor. The quote to repair is 1800 dollars. The quote to rep...
Your outdated thermostat habits spike your bill
The number on your thermostat screen is probably wrong. Not broken wrong. Strategy wrong. The Department of Energy quietly rewrote its thermostat guidance and the old set it and forget it rule no longer matches how modern variable speed equipment ...
Which water heater actually fits your home
About forty percent of my service calls end with a water heater question. The unit is leaking or it is twelve years old, and the homeowner asks what they should replace it with. They have read a couple articles. They have heard tankless is the new...
Why summer tune-ups destroy your AC
Every June I get calls from homeowners wanting to book the 229 dollar tune-up the same week the first 95 degree day hits in Kingfisher. I turn most of them down and tell them to book October or wait until March next year. They think I am being dif...
Why geothermal cooling costs half as much
Every June somebody asks me if geothermal is actually worth it. The brochure numbers from manufacturers are fine. The numbers that matter are what my real customers pay OG&E and CKenergy in July versus what their conventional neighbor with the sam...
The AC 5000 Rule is a trap
Every May and June I have the same conversation across kitchen tables in Kingfisher and Canadian County. The AC is 12 years old, the compressor is making noise, the repair quote is around 1800 dollars, and the homeowner asks me what I would actual...
The 20 to 30 percent energy leak hiding in your attic
Department of Energy says the average house loses 20 to 30 percent of the air moving through its ducts to leaks, mostly in the attic. That is cooled air you paid for, vented straight into a 130 degree attic where it does nothing for the people in ...
Why mold shows up 24 hours after a storm
Severe storm rolls through Oklahoma. Some water gets in the basement or under the back door. Most homeowners spend the next two days calling insurance and taking pictures. Meanwhile, the EPA's own clock is ticking. You have 24 to 48 hours before m...
Geothermal Ground Loops Are Permanent Infrastructure
HOST A: Here is a frame I want to put on the table at the top, because it changes how a homeowner should think about geothermal. When you write a check for a geothermal system, you are actually buying two completely different things that have b...
The Real Cost of Geothermal in 2026
HOST A: Here is the conversation nobody wants to have out loud at the kitchen table. You hear the word geothermal and your gut does two things at the same time. First gut reaction, oh that sounds fancy and efficient. Second gut reaction, that s...
Finding 2026 HVAC rebates after tax credits
DAVE: I had a customer last week who told me her sister-in-law was waiting until 2026 to install a new heat pump because she wanted that big federal tax credit. I had to break it to her. The credit is gone. Expired December 31, 2025. So if you ...
Why HVAC rebuilds beat full replacements
HOST A: For about twenty years, the standard advice in the HVAC business has been, if your system is over ten years old and you need a major repair, just replace it. New equipment is more efficient, the warranty starts over, you are throwing go...
The $339,000 reality of home maintenance
HOST A: Pop quiz. How much do you think the average American homeowner spends on maintenance and repairs over the lifetime of owning their house? HOST B: I would guess somewhere around a hundred thousand dollars over thirty years. That feels r...
Why Your Air Conditioner Is Too Big
HOST A: Quick pop quiz. If I asked you how a contractor figured out what size air conditioner to put in your house, what would you guess? HOST B: Honestly, I would guess they look at the square footage and divide by something. Like four hundre...
Your attic is stealing your cold air
HOST A: Here is the part nobody tells you when they sell you a brand new air conditioner. You can buy the most efficient unit on the market, the highest SEER2 rating, all the bells and whistles, and still lose almost a third of your cooling bef...
Beat the 24 hour mold clock
HOST A: Question. Severe storm rolls through Oklahoma. Rain dumps three inches in two hours. Some water gets in the basement, or the laundry room, or under the back door. What's the first thing most homeowners do? HOST B: Call the insurance co...
Stop wildfire smoke with your HVAC
Smoke rolls into Kingfisher from a panhandle grass fire or a controlled burn three counties over, and your HVAC is either pulling that poison into your house or keeping it out. Depends on three settings most homeowners have never touched. This ep...
Why Your Airtight Home Is Suffocating You
I see a lot of new builds in central Oklahoma where the house is so tight the air inside ends up worse than the air outside. Sealed envelopes, taped seams, every gap caulked. Great for energy bills. Bad for what your family is breathing. If your ...
The Mathematical Scam of Premium Heat Pumps
I get asked about HSPF2 ratings all the time, and the national brochures never give you the real answer for Oklahoma. Too low and you waste money on the power bill for 15 years. Too high and you overpay on the install and never see the payback. F...