Founded In
1967
From a two-man operation to a full-service Tulsa HVAC team.
Our history
One principle has carried us forward: customers first.
Since our beginnings in 1967, Mark Hill Heating & Air has built its reputation by showing up, explaining the work clearly, and standing behind the result.
That commitment led to the start of the dedicated service company in 1982, allowing Mark Hill to better serve residential and commercial customers throughout the Tulsa area.
Today, our team installs industry-leading Trane® heating and air conditioning systems while maintaining and repairing all major HVAC brands. The company has grown, the equipment has changed, and the tools have improved, but the standard remains the same: serve people well and earn the next call.
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Mark Hill begins as a two-man operation serving customers in the Tulsa area.
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The dedicated service company is established to better support residential and business customers.
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Michael Bell becomes owner and president, carrying the company’s customer-first standards into its next chapter.
Our Values
The Mark Hill Promise.
Every service visit should give you confidence in the people, the process, and the work being performed in your home.
Clear answers before work begins.
We explain what we found, provide a complete estimate upfront, and recommend what makes sense for your system.
Responsive service when comfort cannot wait.
We work to diagnose the problem and restore heating or cooling as quickly and conveniently as possible.
Work that is complete only when you are satisfied.
Professional workmanship, dependable equipment options, and protections designed to support lasting comfort.
Our business is based on reputation.
We want a long, happy relationship with you. A job is only considered “complete” only when you are completely satisfied.
About The Owner
HVAC experience from the ground up.
As a Tulsa Native and Oklahoma State University graduate, Michael didn't start out as a company owner; he began in the trenches of the HVAC trade, learning the technical side of heating and air conditioning from the ground up. Through years of hands-on experience installing systems, diagnosing complex problems, and helping homeowners stay comfortable through Oklahoma's extreme summers and winters, he built a reputation for being dependable, knowledgeable, and customer-focused.
As Michael gained experience in the field, he also began to understand something else about the industry: many homeowners were frustrated with high-pressure sales tactics, lack of transparency, and companies that treated customers like numbers instead of neighbors.
He believed there was a better way to run an HVAC company.
That belief eventually led Michael to take on a much bigger responsibility: becoming the owner of Mark Hill Heating & Air in January of 2026.
Taking ownership of the company meant more than just running the day-to-day operations. It meant building a team, setting the standards for customer service, investing in better training and equipment, and creating a company culture focused on integrity and reliability. Under Michael's leadership, the company has continued to grow while maintaining the same core values that customers expect: honest recommendations, quality workmanship, and fast, dependable service.
Today, Michael oversees a team of technicians serving homeowners throughout Tulsa, Broken Arrow, and the surrounding communities. From emergency repairs to full HVAC system installations, he remains actively involved, ensuring every job meets the high standards he expects from his company.
Heat or chill, call Hill
Local experience. Dependable service.
Whether you need an urgent repair, seasonal maintenance, or help planning a new system, Mark Hill can give you a clear place to start.