DND Heating & Air Conditioning is a residential and commercial heating and air conditioning company based in Richardson, Texas. Our services include repair, replacement, and regular maintenance.

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Heating and Air Conditioning Services

Your Comfort is our Business!
One of the best ways to keep your Air Conditioning and Heating Systems operating at peak efficiency is to have regular and periodic maintenance of your systems.

Preventative Maintenance Plan (PMP)

We offer a Preventative Maintenance Plan (PMP) to proactively maintain your air conditioning system, heat pump, and furnace. PMP includes one pound of refrigerant per unit, priority service, and a 10% discount on service calls and repairs. (Excludes new equipment)
DND Heating -Air Conditioning, LLC, Heating & Air Conditioning, Richardson, TX

With our Air Conditioning and Heat Pump checks we will perform the following services and checks to your systems:
  • Check refrigerant charge
  • Check super-heat and sub-cooling
  • Check voltage and amperage of compressor and meters
  • Lubricate bearings
  • Check temperature splits
  • Check electrical connections
  • Check condensation drain line
  • Check belts
  • Check air filter
  • Check thermostat
  • Check duct work
  • Check evaporator coil
  • Check defrost cycle (Heat Pump Only)
  • Check emergency heat elements (Heat Pump Only) 


With our Furnace checks we will perform the following services and checks to your systems:

  • Check for carbon monoxide leaks
  • Check burner assembly
  • Inspect heat assembly
  • Inspect heat exchanger
  • Check gas pressure
  • Check operation of burner and gas valve
  • Check flue pipe and venting
  • Check electrical connections
  • Check pilot assembly
  • Check belts
  • Check air filter
  • Lubricate bearings
  • Check thermostat
  • Check duct work
  • Check evaporator coil
  • Check amperage of heat elements (Electric Only)
  • Check sequence of operation (Electric Only)

Call us today to sign up!
972-234-COOL (2665)

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DND Heating & Air Condtioning LLC -  Fully Licensed and Bonded -  Texas License #TACLB43626E
Regulated by Texas Department of Licensing and Regulations, P.O. Box 12157, Austin, Texas 78711, 1-800-803-9202, 532-463-6599
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