Business Details
29 Years
experience
Emergency
services
Trusted HVAC Services in Rockwall, TX
D-N-D Services has been a trusted provider of residential and commercial HVAC solutions in Rockwall and surrounding areas since 1997. Our team of NATE-certified technicians specializes in air conditioning repair, heating system maintenance, duct cleaning, indoor air quality testing, and energy-efficient installations. With an A+ rating from the Better Business Bureau and a commitment to ongoing factory training, we prioritize customer satisfaction through honest assessments, transparent pricing, and 24/7 emergency service.Our expertise extends to high-efficiency systems, foam-insulated homes, and specialized diagnostics like infrared imaging and Manual J load calculations. Backed by decades of local experience and partnerships with leading brands like Carrier and Generac, we deliver reliable comfort solutions tailored to Texas climate challenges.
Services
HVAC Repair
Duct Cleaning
Indoor Air Quality
Maintenance Plans
Commercial HVAC
Details
- Year established: 1997
Highlights and features
- 25+ years serving Rockwall with expert HVAC solutions
- NATE-certified technicians for superior technical expertise
- A+ rating with the Better Business Bureau
- 24/7 emergency service with holiday availability
- Satisfaction guarantee on all installations and repairs
Associations and certifications
- Better Business Bureau (BBB)
- North American Technician Excellence (NATE)
- Texas Department of Licensing and Regulation
What people say
EXCEPTIONAL service experiences
Knowledgeable, cost conservative technicians
Prompt holiday service availability
No additional charge extras
Under estimate repair costs
Services
HVAC Repair
Our NATE-certified technicians provide prompt repair services for all HVAC system types, including emergency diagnostics and same-day solutions. Specializing in identifying cost-effective repairs versus replacements while ensuring optimal system performance for both residential and commercial properties.
Duct Cleaning
Professional duct cleaning removes contaminants like mold, pollen, and dust mites using advanced Rotobrush equipment. Includes comprehensive system sanitization and indoor air quality testing to improve respiratory health and HVAC efficiency in homes and businesses.
Indoor Air Quality
Comprehensive IAQ solutions featuring humidity control, ventilation optimization, and bipolar ionization technology. Our technicians perform detailed air quality assessments and install purification systems to eliminate pathogens and allergens from living and working environments.
Maintenance Plans
Customizable maintenance agreements include bi-annual system inspections, priority service scheduling, and discounted repairs. Features technician-recommended upgrades, seasonal efficiency tuning, and priority response during peak demand periods to extend equipment lifespan.
Commercial HVAC
Tailored HVAC solutions for commercial properties including system audits, energy efficiency upgrades, and 24/7 emergency support. Specializing in large-scale installations, preventive maintenance contracts, and customized comfort solutions for retail, office, and industrial spaces.
People
Kristin
Office Manager
Manages customer service operations with prompt responsiveness and scheduling expertise, ensuring smooth service coordination for residential and commercial clients.
Brian
Service Technician
Experienced HVAC technician known for cost-effective solutions, thorough diagnostics, and exceptional customer service with three years of proven performance.
Colten
Emergency Technician
Specializes in rapid holiday and emergency response, completing critical repairs like thermostat replacement within 90 minutes of service calls.
Chaz
Installation Technician
Expert in system installations and diagnostics, providing efficient solutions during extreme weather conditions with clear customer communication.
Questions
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency service with holiday availability for urgent heating and cooling repairs.
What HVAC brands do you service?
We work on all major brands including Carrier, Trane, Lennox, Goodman, and Generac equipment.
How often should duct cleaning be performed?
Recommended every 3-5 years or when experiencing allergy symptoms, visible dust buildup, or reduced system efficiency.
Do you provide indoor air quality testing?
Yes, we offer comprehensive IAQ assessments including mold detection and contaminant analysis using specialized diagnostic tools.
What maintenance plans are available?
We offer seasonal and annual maintenance agreements with priority service, discounted repairs, and system longevity benefits.
Are financing options available?
We provide flexible financing solutions for new system installations and major HVAC upgrades.
