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Indoor Air Quality
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We’ll arrive and fix your system within 24 hours!

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There’s Always a Storm Coming!

System Replacement


Our team will replace your HVAC system – no problem!

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Financing for your heating and cooling needs!


Pro Heating & Air Company in Irmo & Columbia, SC

Services that Exceed Your Heating and Air Expectations in South Carolina

Since our inception, Cassell Brothers Heating & Cooling has been committed to offering quality service and HVAC installations in Columbia and the surrounding areas. Family-owned, we employ well-trained, courteous employees with the same commitment to all of our customers. Whether it’s a repair or a new installation, you can count on Cassell Brothers Heating & Cooling to provide premier heating and air conditioning services in Columbia, South Carolina.

Columbia Heating Services

Keep your heating system working efficiently and in top performance with our heating system maintenance plans. Our affordable heating maintenance and repair services will give you peace of mind that your system will be there to keep you warm when you need it most. If an emergency arises with your heating system, know that you can count on us to be there for you in your time of need.  A live employee is always answering the phone. For premier heating repair, maintenance and installation services in South Carolina, give us a call.

Columbia Cooling Services

Columbia, South Carolina gets very hot and a cooling system that isn’t working properly can lead to sleepless nights and unbearable days. Keep your system working in tip-top shape with our affordable air conditioner maintenance plans and AC repair service. A broken air conditioning unit in Columbia is an emergency. If your system is running poorly, contact us before a little problem becomes a costly one. For premier air conditioning repair, installation and maintenance services in Columbia, give us a call.

Indoor Air Quality

Today’s homes are built to maximize efficiency, but a lack of air exchange can lead to poor indoor air quality. We can design a complete IAQ strategy to keep your home clean, healthy and fresh smelling.

Ductless HVAC

Ductless mini-splits provide a compelling alternative to loud window units and inflexible central HVAC systems. Ductless is the perfect choice for room additions, media rooms, basement build-outs, man caves and garage conversions.

Commercial HVAC

Your business can’t afford downtime, so it’s important to have your commercial HVAC equipment installed, maintained and repaired by service technicians who have a deep understanding of the commercial refrigeration cycle and air-side fundamentals. To ensure your HVAC service is never interrupted, check out our flexible commercial maintenance plans.

Why Choose Us?

You have many HVAC contractors to choose from, but we continue to grow because our business is based on a few core principles we put into practice every day. Here are a few reasons why our customers partner with us:

  • 24/7 emergency services with no overtime fees
  • Trane Comfort Specialist dealer
  • NATE-certified technicians

Honest and Reliable Heating and AC Services

If you’re looking for an HVAC company who serves Columbia, Lexington, Irmo, SC and the surrounding areas, call Cassell Brothers Heating & Cooling today. We can answer your questions and arrange a convenient appointment with one of our employees.