Repair, and Service

Our team of certified professionals is equipped to work on all brands of equipment.

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Replacements and Upgrades

Stay ahead with the latest HVAC technology. We provide state-of-the-art systems

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Cozy Club Maintenance Plan

Regular maintenance is key to the longevity and performance of your HVAC system

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New Construction

Building a new home, multifamily, or commercial space?

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Air Quality Solutions

Breathe easy with our indoor air quality services. We offer solutions to enhance indoor air

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WELCOME!

Reliable HVAC Service, OnSite When You Need Us

At OnSite Heat & Air, we believe that a comfortable home and workplace is key to a happy life. Serving Stillwater, Oklahoma, and surrounding communities, we’re not just experts in HVAC systems; we’re your neighbors committed to ensuring your indoor comfort all year round.

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COMPREHENSIVE HVAC SOLUTIONS

Our Expert Services at OnSite Heat & Air

Expert Repair, and Service

Our team of certified professionals is equipped to handle any HVAC challenge. From intricate repairs and routine servicing to fresh installations, we guarantee seamless maintenance and operation of your systems. We understand the nuances of Stillwater’s climate and tailor our solutions to ensure your living and work environments are always comfortable​​.

Cutting-Edge System Replacements and Upgrades

Stay ahead with the latest HVAC technology. We provide state-of-the-art systems, including high-efficiency furnaces, air conditioners, heat pumps, and mini-splits, customized to your needs. Our services extend beyond installation – we assist in selecting the system upgrades best suited to your lifestyle and budget​​.

Cozy Club Maintenance Plan

Regular maintenance is key to the longevity and performance of your HVAC system. Our maintenance plans involve routine inspections and preventive care, ensuring your systems operate at peak efficiency and preventing unexpected breakdowns​​.

Custom Installations for New Constructions

Building a new home or commercial space? We specialize in designing and installing HVAC systems that maximize efficiency and reliability from the ground up. Our custom installations ensure your new property is equipped with the best heating and cooling solutions​​.

Indoor Air Quality Solutions

Breathe easy with our indoor air quality services. We offer solutions to enhance air quality, including filtration, air purifiers and humidity control systems, ensuring a healthier environment for you and your family​​.

24/7 Emergency Services

HVAC emergencies can occur at any time. That’s why we’re available around the clock to ensure your comfort is never compromised. Our rapid response team is ready to tackle any emergency, providing peace of mind when you need it most​​.

TESTIMONIALS

Our Customer Stories

RESOURCE CENTER

RESOURCE CENTER

As technology advances, so do the options for energy-efficient heating and cooling solutions. Onsite Heat & Air stays at the forefront

The Latest in Energy-Efficient Heating and Cooling Solutions

As technology advances, so do the options for energy-efficient heating…

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Maintaining a comfortable and healthy indoor environment is crucial, and your heating and air conditioning systems play a significant role in

The Importance of Regular HVAC Maintenance

Maintaining a comfortable and healthy indoor environment is crucial, and…

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Transitioning between seasons can be challenging for your HVAC system, but with Onsite Heat & Air services

Navigating Seasonal Transitions with Onsite Heat & Air

Transitioning between seasons can be challenging for your HVAC system,…

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