Air Conditioning & Heating Repair Rockwall | New Installations | Commercial HVAC Maintenance

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Air Conditioning Repair & New Systems  Rockwall | Rowlett | Heath | Plano | Mesquite | Garland | Greenville 


           Our convenient financing options give you budget flexibility to get the reliable energy efficient comfort you are looking for,
*subject to approved credit

Quality that is Guaranteed

Heating and Air Conditioning Comfort Specialist

Need to Schedule a Service Call ?

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Need to Schedule AC
Maintenance or an Inspection ?

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Contact Us

Air Conditioning Repair | Heating Repair

D-N-D Services has been servicing all brands of HVAC equipment in Rockwall and surrounding areas since 1997. Exceeding residential and commercial HVAC comfort needs is D-n-D Services business. We do it by having genuine concern for our customers’ needs and concerns and our team has years of experience repairing and replacing air conditioning/heating units. We also offer several other services to meet your needs such as Indoor air quality testing, duct cleaning/sanitization, whole home infrared imaging, digital load calculations, and whole home generators.

High efficiency systems? No problem. D-n-D Services has years of experience servicing and installing the latest high efficiency and communicating systems such as or Carrier Infinity and our Amana 18+ Seer lines of equipment.  In addition, many affordable equipment and services are available to satisfy all of your heating and cooling needs while meeting your budget.

D-n-D Services is proud to be at the top of The Good Contractors List for air conditioning and heating contractors. If you do need a new air conditioning or heating system, we are proud of our premiere, new central air conditioning equipment installations and happy to give you an honest assessment and quote for a new HVAC system or repair.  D-n-D Services is proudly serving Rockwall, Dallas, Plano, Wylie, McKinney, Greenville, and surrounding areas

air conditioning repair rockwall 972-771-9898

EPA Rockwal Air Conditioning Repair
Carrier Factory Authorized Dealer Rockwall AC Repair
better business bureau
hvac nate certified
AC Repair | Heating Repair

Residential and Commercial HVAC

Professional technicians specialize in heating & ac repair and service.
Indoor Air Quality Services include air purification, dehumidifiers, humidifiers.
State licensed service for all makes and models air conditioners, gas furnaces, electric heat, and heat pumps.

New Air Conditioning | Heating System Installations

Don’t panic if think you need a new heating or air conditioning system.
dnddfw does a professional analysis to find out if a repair will meet your needs.
In the event your system does need replacement, we offer competitive prices on premier installations and financing options for peace of mind on your budget.

HVAC Air Duct Cleaning

Proper air duct cleaning does more than help heating and air conditioning systems operate more effectively – air duct cleaning also removes pollutants/allergens contaminating the air. D-N-D Services for a complete, professional air duct cleaning of your entire system to ensure the air you and your family breaths is fresh and clean!

Air Conditioning Repair | Heating

Don’t panic if you think you need a new heating or air conditioning system. DND Services technicians will do a professional analysis to find out if simple repairs will solve your problem.

Duct Cleaning

Your ventilation system could be a breeding ground for dust mites and home to millions of dust particles, pollen and mold and mildew – and when you breathe in air, you are inhaling those contaminants.

Heat | AC Installations

Want to find out if your heat and air systems need to be upgraded to a more efficient, comfortable, environmentally friendly unit that can save you money? If so, give us a call today

Indoor Air Quality

Temperature, humidity, cleanliness, freshness, odors, and noise contribute to your home indoor air quality. Poor indoor air quality can impact your family and a businesses processes, and productivity.

Commercial HVAC

Your customers and employees are as important to you as your HVAC systems are to us. We offer commercial and industrial hvac maintenance and installation of cooling and heating units. We repair all major brands.


Proper and regular maintenance is the key to extending the life of heating and air conditioning systems – and you can depend on our trained, technicians to take excellent care of you.


We can update your HVAC systems for better performance and our certified technicians are fully trained to modify equipment that is already in service with the newest technology.

AC Repair Service

Whether you have a brand new HVAC system or a dependable relic from the past, Our professional technicians can keep them in top operating condition. We service all makes and models, old and new.


air conditioning repair rockwall 972-771-9898

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honest a/c company

Jennifer Hamilton

My a/c went out at my house. DND came out and instead of telling me I needed a new unit (like every other a/c company), they found the problem, changed the part, and it's working great now. These guys are honest and very dependable. I highly recommend them!

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J. Adams

The BEST a/c company! My restaurant a/c wasn't working very well. One of my friends mentioned D-N-D so I called them. Brian (totally awesome guy!) came out and cleaned my unit up on the roof. My a/c is working like a charm now! This company is dependable, honest, and didn't make me feel ignorant for not knowing why my a/c wasn't working. I HIGHLY recommend D-N-D.

Michael Taylor

We've used their company twice. They are friendly and fast! My central AC system failed yesterday. I called this morning. They fixed it today! He gave some pricing information on new systems and good advice also.

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Cody Christian

Awesome customer service very professional and excellent workmanship!

Hire Us Today