Hartzell's Heat & Air

Hartzell's Heat & Air is a privately owned heating, ventilation and air conditioning (HVAC) contractor based in Kingfisher, Oklahoma, in the United States. The business was founded around 2011 by Dave Hartzell, a Master HVAC licensee who had previously spent about twelve years working for another local HVAC company and who traces his start in the trade to working with his father at age sixteen and a half. The company describes itself as a local, non-franchise operation rather than a call center, and it serves residential and light commercial customers across central Oklahoma, including Kingfisher County and neighboring counties such as Canadian, Garfield, Blaine, Logan, Oklahoma and Major. The firm's service range covers the full HVAC lifecycle: air conditioning repair, furnace and heating repair, heat pump repair (both air-source and geothermal), full system replacement, maintenance and tune-up plans, and a distinctive "rebuild" offering that repairs and refurbishes existing systems when the equipment and, in geothermal cases, the ground loop are still in good condition. Hartzell's markets itself heavily on geothermal expertise, describing geothermal as what the founder knows best, and it holds IGSHPA accreditation as a geothermal installer. It is also a Mitsubishi Diamond Dealer, a Trane Comfort Specialist (TCS SELECT) dealer, and a ClimateMaster GeoElite dealer, and it offers equipment from brands including Trane, RunTru, Mitsubishi and Daikin. Pricing is published openly on the company's website: a diagnostic visit is listed at $111 as part of a $210 flat repair-call price, after-hours dispatch is quoted at $198 plus the $111 diagnostic for a $309 total, a furnace tune-up is $229, and the "One Visit Spring or Fall 360" maintenance plan is $199 per year with the visit included. The company advertises same-day service, 24/7 emergency availability, written repair estimates before work begins, and financing on system replacements. It reports a 4.8-star rating across more than 300 Google reviews, BBB A+ accreditation since 2014, and completion of more than 6,500 jobs serving over 1,500 Oklahoma homes. Hartzell's Heat & Air is a small, owner-operated business rather than a regional or national chain. Its marketing leans on the founder's personal credentials — a Master HVAC License (#00115936), NATE certification, IGSHPA accreditation, and recognition in the 2026 Marquis Who's Who — as well as on local trust signals such as Spanish-language service availability and community ties. The company also publishes consumer-education content, such as an analysis of Oklahoma electricity rate history drawn from federal filings, positioning itself as a knowledgeable local authority on home energy costs as well as on HVAC equipment.

Hartzell's Heat & Air is a small, owner-operated HVAC contractor in Kingfisher, Oklahoma. Its history is essentially the personal history of its founder, Dave Hartzell, who according to the company's own account began working in the trade at sixteen and a half alongside his father. He accumulated roughly 47 years of HVAC experience in total, including about twelve years working for another local HVAC company before striking out on his own. Hartzell founded Hartzell's Heat & Air in Kingfisher around 2011, giving the business more than fifteen years of continuous operation as of the mid-2020s. The company has remained independent — it explicitly states that it is "not a franchise" and "not a call center with a truck" — and has grown within central Oklahoma rather than expanding into a regional chain. Over that period it reports having completed more than 6,500 jobs and served more than 1,500 Oklahoma homes, with a service footprint spanning Kingfisher County and the surrounding counties of Canadian, Garfield, Blaine, Logan, Oklahoma and Major. A defining strategic choice has been the company's emphasis on geothermal heating and cooling. Hartzell describes geothermal as "what I know best," and the firm holds IGSHPA accreditation as a geothermal installer, alongside dealer relationships with Mitsubishi (Diamond Dealer), Trane (TCS SELECT), and ClimateMaster (GeoElite). This specialization differentiates it from generalist HVAC contractors in a rural and small-city market. The company also developed a distinctive "rebuild" service — branded Hartzell's Refreb — that repairs and refurbishes existing conventional or geothermal systems when the equipment and, for geothermal, the ground loop are still sound, offering an alternative to full replacement at a lower price point. Operationally, the business has built its reputation on responsiveness and transparency. It advertises same-day heating and cooling calls, 24/7 emergency availability, published flat pricing (a $111 diagnostic within a $210 repair-call price, $309 after-hours total, a $229 furnace tune-up, and a $199 annual maintenance plan), and written estimates before repair work begins. It reports a 4.8-star rating across more than 300 Google reviews, BBB A+ accreditation since 2014, and recognition including a BusinessRate 2026 award as the top air conditioning contractor in Kingfisher and inclusion of the founder in the 2026 Marquis Who's Who. The company also publishes consumer-oriented energy content, such as a ten-year analysis of Oklahoma electricity rates based on federal EIA Form 861 filings, reinforcing its local-authority positioning.

• 2026

  Founder Dave Hartzell included in the 2026 Marquis Who's Who edition.

• 2026

  BusinessRate 2026 Annual Award ranks Hartzell's Heat & Air #1 Air Conditioning Contractor in Kingfisher.

• 2014

  Company becomes a BBB A+ Accredited Business.

• 2011

  Hartzell founds Hartzell's Heat & Air in Kingfisher, Oklahoma.

• 1999

  Hartzell begins roughly twelve years working for another local HVAC company before founding his own (approximate).

• 1978

  Dave Hartzell begins working in the HVAC trade at age 16½ alongside his father (approximate, based on 47 years of experience).

Owner-operated, non-franchise local HVAC contractor positioning itself as central Oklahoma's geothermal specialist, with published pricing, same-day service and 24/7 emergency availability.

• Air conditioning repair

  Capacitors, contactors, coils and refrigerant recharge; $111 diagnostic with NATE-certified technicians and upfront pricing.

• Hartzell's Refreb HVAC rebuild

  Full system rebuild for AC, furnace, heat pump or geothermal, starting at $3,500 installed, with 1- to 5-year parts and labor warranty depending on system.

• Furnace and heating repair

  Gas furnace ignitors, heat exchangers and control boards; same-day service available.

• HVAC system replacement

  Free estimates on Trane, RunTru, Mitsubishi and Daikin equipment, with financing available.

• One Visit Spring or Fall 360 maintenance plan

  $199 per year with the visit included and priority scheduling.

• Geothermal installation and service

  IGSHPA-accredited geothermal ground loop installation and service, the company's stated specialty.

1. 1Hartzell's Heat & Air | HVAC Repair Kingfisher OKhartzellsheatair.com
2. 2What Has Happened to Oklahoma Electricity Rates? - Hartzell's Heat & Airhartzellsheatair.com
3. 3Dave Hartzell, Master HVAC | Hartzell's Heat & Airhartzellsheatair.com
4. 4Hartzell's Heat & Air | HVAC Services Kingfisher OKhartzellsheatair.com
5. 5Hartzell's Heat & Air - Wikidatawikidata.org