HVAC Services in Noble and Norman, OK

Water heater, furnace, and air handler in a basement with gray walls.

Quality Heating and Cooling Services You Can Trust

When your comfort depends on a reliable HVAC system, Harwell Heat & Air is the team to call. We provide expert heating and cooling services for homeowners across Noble, Norman, and surrounding Oklahoma communities. Whether you need a quick A/C repair, a full heating installation, or seasonal maintenance, we deliver honest, professional solutions backed by more than a decade of experience.



With licensed technicians, responsive service, and a commitment to doing things the right way, we’ve built our reputation one home at a time.

Our Service Categories

We offer a full range of residential HVAC services to keep your system operating efficiently all year long. Our core services include:

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Air conditioning and heating repair

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New HVAC system installations

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Preventative maintenance and seasonal tune-ups

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Indoor air quality improvements

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Ductwork inspections and modifications

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Mini-split system installations

We work with all major HVAC brands and equipment types, including furnaces, central air units, heat pumps, and ductless mini-splits.

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Air Conditioning and Heating Repairs

When your HVAC system breaks down, fast, accurate repair is essential. At Harwell Heat & Air, we respond quickly to diagnose and resolve common and complex HVAC issues. Our team is equipped to handle everything from minor part replacements to major system failures.


Common repair services include:

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Air conditioning not blowing cold air

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Furnace not producing heat

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Thermostat issues

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Pilot light or ignition problems

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Refrigerant leaks and compressor failures

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Loud or unusual system noises

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Uneven airflow or temperature imbalances

We always begin with a thorough inspection and give you a clear explanation of what’s wrong and how we’ll fix it. No guesswork. No unnecessary upsells.

Our goal is to restore your comfort quickly and extend the life of your system with high-quality, reliable repairs.

HVAC Installations and Replacements

Whether you're building a new home, remodeling, or replacing an aging system, a properly installed HVAC system is crucial to long-term comfort and efficiency. Harwell Heat & Air provides professional installation services for central air conditioners, furnaces, heat pumps, and mini-splits.

We’ll help you choose the right equipment based on your home size, energy efficiency goals, and budget. We install systems that perform reliably and meet modern energy standards, ensuring years of performance with fewer repairs.


Our installation services include:

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Central A/C and furnace installation

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Ductless mini-split installation

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Heat pump installation

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Thermostat upgrades and smart controls

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Removal and disposal of old equipment

We install systems from trusted HVAC brands and ensure every job is done to code, with clean workmanship and complete testing before we leave.

Mechanic working under a car, wearing gloves and glasses. Garage setting.
Mechanic working under a car, wearing gloves and glasses. Garage setting.

HVAC Maintenance Plans

Preventative maintenance is the key to long-lasting HVAC performance. With regular inspections and seasonal tune-ups, your system can operate more efficiently, use less energy, and avoid costly repairs down the road.


We offer annual and seasonal HVAC maintenance plans that include:

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Full system inspections

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Coil and filter cleaning

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Electrical checks and safety testing

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Refrigerant level checks

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Thermostat calibration

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Performance diagnostics

Regular maintenance can help lower your utility bills, extend equipment life, and provide peace of mind year-round. It’s one of the smartest investments you can make in your home comfort.

Water heater, furnace, and air handler in a basement with gray walls.

Mini-Split Systems and Room-Specific Solutions

Have a space that’s tough to heat or cool — like a garage, attic, or new addition? We install energy-efficient ductless mini-split systems that provide targeted climate control without requiring extensive ductwork.

Mini-splits are ideal for:


  • Bonus rooms and additions

  • Detached buildings

  • Homes without existing ducts

  • Zoned heating and cooling needs

Our team will assess your space and recommend a system that delivers comfort without waste or complexity.

Ductwork and  Air Quality Improvements

Your home’s ductwork plays a major role in how efficiently your HVAC system runs. Poorly sealed or damaged ducts can reduce airflow, increase energy usage, and affect indoor air quality.


We offer duct inspections and minor modifications to help restore proper airflow and improve overall performance. We also recommend air filtration upgrades and humidity control systems to improve indoor air quality — especially helpful for allergy or asthma concerns.

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Service Areas

We proudly serve residential clients throughout:

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Noble, OK

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Norman, OK

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Moore, OK

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Oklahoma City, OK — surrounding areas

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Edmond, OK and nearby communities

If you're located within or near the 73068 or 73072 ZIP codes, we’re your reliable local HVAC contractor.

Schedule a Service Today

Whether you're dealing with a broken air conditioner or planning a system upgrade, Harwell Heat & Air is ready to help. We bring the knowledge, tools, and customer care to handle your HVAC needs with confidence.