Backup Power Made Simple
Choosing the right backup generator for your home in Rockwall and nearby areas doesn’t have to be complicated. At D-N-D Services, we make the process seamless from start to finish. As a certified Generac dealer, we specialize in helping homeowners select and install the ideal standby generator based on their property size, energy usage, and budget.
From selecting the fuel type to ensuring code-compliant placement and sizing, our knowledgeable team is here to guide you every step of the way. With a Generac generator professionally installed by D-N-D Services, you’ll gain peace of mind knowing your home is protected — no matter the weather. For personalized service and expert advice, call us at (972) 771-9898.
As an authorized Generac dealer, D-N-D Services delivers generator installations that meet the highest factory standards. Our technicians are trained specifically on Generac products to ensure each system is installed safely, efficiently, and in compliance with all local codes.
We handle everything — from site evaluation and permitting to final inspection and system testing. Our attention to detail ensures your generator runs flawlessly and engages automatically the moment your power goes out.
Generac generators are built to last — and that confidence is backed by strong warranty options. Every new Generac home standby system includes a 5-Year Limited Warranty, with extended coverage available for up to 10 years on select models.
We also help with proper registration to make sure you receive full benefits. With coverage for parts and labor, you’ll have reliable support for years to come — no surprises, just dependable power.
Since 1959, Generac has led the way in backup power technology. As the first company to develop affordable home standby generators, they’ve continued to innovate with features like automatic transfer switches, remote mobile monitoring, and fuel flexibility.
Today, Generac systems are known for their quiet operation, energy efficiency, and seamless integration with modern homes. Backed by over 60 years of engineering expertise, Generac is the trusted name in home energy resilience.
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Schedule Your Free Appointment Now.Have Questions? Check Out Our Knowledge Base!
D-N-D Services Heating & Air Conditioning offers unparalleled expertise in HVAC systems, making us a trusted resource for credible and precise information in Rockwall and the surrounding areas. Our team of certified technicians has developed an extensive knowledge base covering every aspect of heating, ventilation, and air conditioning systems. With over 25 years of industry experience, we prioritize customer satisfaction by providing competitive pricing and flexible financing options. Choose D-N-D Services Heating & Air Conditioning for all your HVAC needs.
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Feel free to ask about our Indoor Air Quality products.
We want you to have the healthiest indoor air possible. For healthy indoor air quality you may need your ac systems duct cleaned , repaired, or replaced. Infilterents can get in leaking or damaged duct and into the air you breathe.If your air conditioning system isn't functioning correctly, whether it's due to a broken A/F or condenser unit, an outdoor overflow valve leak, or simply not cooling, D-N-D Services Heating & Air Conditioning is here to help. Our team possesses the skills, expertise, and integrity needed to promptly resolve any A/C issues you may encounter.
Air Conditioning Repair
A/C Maintenance
Duct Cleaning
Thermostat Installation
At D-N-D Services Heating & Air Conditioning, we know heating problems can be a major inconvenience. Our experts are adept at quickly identifying and diagnosing nearly any issue with your heating system. We provide detailed quotes to help you make informed decisions about repairing your furnace and getting it back up and running efficiently.
Furnace Repair
Heat Pumps
New Installation
Furnace Tune Up
At D-N-D Services Heating & Air Conditioning, the health and well-being of our customers is our top priority. We offer a wide range of indoor air quality products to help ensure your family remains healthy and comfortable.
Air Purification
Humidity Control
Ventilation
Filters
Regular Maintenance: The Key To Preserving The Life Of AC And Heating Systems
At D-n-D Services, we want to ensure that your home and/or business is always cool in the summer and warm in the winter – and that your heating and air conditioning systems are safe. Proper and regular maintenance is the key to extending the life of heating and air conditioning systems – and you can depend on our trained, professional technicians to take excellent care of all your heating and ac needs.
