Danfoss Drives: Advanced Motor Control for Commercial HVAC
Powering Efficiency and Reliability in the Southeast U.S.
For contractors, engineers, and project managers across the Southeast, commercial HVAC projects demand energy efficiency, reliability, and compliance with evolving standards. With motors accounting for 50–70% of a building’s energy use, choosing the right motor control technology can mean significant savings and longer system life for building owners.
That’s why Danfoss—a global leader in HVAC and building technology—offers a complete line of Variable Frequency Drives (VFDs). Together, these solutions deliver smarter motor control, reduced downtime, and superior building performance. By optimizing motor speed, ensuring smooth start-ups, and protecting systems from electrical stress, Danfoss solutions deliver the efficiency and durability that Southeast facilities need.
At CIS Industries, we’re proud to distribute Danfoss products across the Southeast U.S., providing the HVAC supplies and mechanical solutions needed to keep buildings efficient, sustainable, and comfortable.
What is a Variable Frequency Drive (VFD)?
A VFD is an electronic device that controls the speed and torque of electric motors by varying input frequency and voltage. In HVAC, this means fans, pumps, and compressors run only as fast as needed to meet demand—rather than at full speed all the time.
This precision results in major energy savings, reduced wear, and better comfort.
Benefits of VFDs
- Energy Savings: Because motor power demand is proportional to the cube of speed, even small reductions in speed deliver exponentially greater energy savings. VFDs commonly cut HVAC fan and pump energy consumption by 30–60%, and in some cases up to 90%.
- Lower Operating Costs: Lower utility bills and fewer maintenance calls.
- Extended Equipment Life: Smooth operation reduces wear and tear.
- Improved Comfort: More consistent airflow and climate control.
- Sustainability & Compliance: Meet ASHRAE standards, LEED points, and local codes.
- Flexibility: Seamless integration with Building Management Systems (BMS).
Systems That Benefit from VFDs
Air Handling Units (AHUs)
Chilled Water and Hot Water Pumps
Cooling Towers
Exhaust Fans and Ventilation Systems
Refrigeration Compressors
Danfoss VFD Product Lines
Danfoss has built one of the most comprehensive drive portfolios in the industry. At CIS, we focus on providing the drives that deliver maximum value, reliability, and availability for commercial HVAC applications.
VLT® HVAC Drive FC 102 – The Premier Drive
The VLT® HVAC Drive FC 102 is the flagship solution for pumps, fans, and compressors in commercial HVAC. It is engineered specifically for building systems, offering energy optimization, fire mode operation, and seamless integration with Building Management Systems (BMS).
- Dual Motor Output option available for cost-effective multi-fan/pump applications.
- NEMA 4X Enclosure Options – available with or without disconnect.
- Stocked locally at CIS in many sizes – plus 1-week stock availability through our Danfoss partners.
- Engineered for smooth start-ups, reduced wear, and compliance with ASHRAE and LEED standards.
VLT® Micro Drive (FC 51)
Compact, reliable, and ideal for retrofits or space-limited panels where simple yet effective motor control is needed.
VACON® 100X
Rugged, IP66/UL Type 4X rated drives built for harsh or outdoor environments. Perfect for cooling towers, rooftop units, and industrial HVAC applications that demand maximum durability.
VLT® PHD-102 Preferred Harmonic Design
The VLT® PHD-102 Preferred Harmonic Design drive offers ultra-low harmonic performance superior to 18-pulse solutions. It provides clean power, reliable operation, and enhanced system compatibility.
Harmonic Performance Solutions
Electrical harmonics are a growing concern in modern HVAC systems. At CIS Industries, we provide advanced tools and solutions:
- System harmonic analysis powered by Danfoss MyDrive® Harmonics Software
- Ultra Low Harmonic Danfoss PHD Drives, superior to traditional 18-pulse drives.
- MTE Harmonic Filters for flexible, cost-effective harmonic mitigation – including the Matrix AP line and Matrix Air EC line.
Danfoss DrivePro® Services – Extended Lifecycle Support
CIS Industries is proud to offer the full suite of Danfoss DrivePro® lifecycle services, providing extended protection and support for your drive systems:
- DrivePro Start-up & Commissioning
- DrivePro Extended Warranty
- DrivePro Remote Monitoring
- DrivePro Spare Parts & Exchange
- DrivePro Retrofit
- DrivePro Preventive Maintenance
- DrivePro Lifecycle Services
- DrivePro Site Assessment
Facility VFD Audits & Upgrade Planning
Beyond supplying drives, CIS Industries provides comprehensive audits of facility VFD installations. Our team evaluates every installed drive, documenting system condition, risks, and upgrade opportunities. We then deliver a professional report and phased upgrade plan that helps customers maximize efficiency, reliability, and long-term budget planning.
Mechanical Applications Across the Southeast U.S.
- Healthcare: Reliable air handling and chilled water systems in hospitals and labs.
- Hospitality & Resorts: Quiet, efficient systems for hotels and entertainment venues.
- Universities & Schools: Cost savings across multiple HVAC units in campus buildings.
- Industrial & Manufacturing: Cooling towers, pumps, and fans operating under heavy loads.
- Data Centers: Precision cooling with redundancy and uptime protection.
Partner with CIS Industries for Danfoss HVAC Solutions
As a trusted distributor of HVAC , CIS Industries connects engineers, contractors, and architects with the best in commercial HVAC motor control technology. Whether you’re designing a new system or upgrading an existing one, our team provides local stock, fast partner fulfillment, and expert engineering support.
We don’t just deliver drives – we deliver complete motor control solutions, backed by harmonic analysis, low-harmonic options, DrivePro lifecycle support, and professional VFD audit services.
