Variable Frequency Drive (VFD) Replacement

A variable-frequency drive (VFD) controls the speed of an electric motor. They are often used in ventilation systems, pumps and machine tool drives. The VFDs in your facility's HVAC system may be 10 to 25 years old. These old VFDs are becoming less reliable and less efficient, and they need to be replaced before they fail.

Contact us to schedule your VFD replacement today. We will provide a new Danfoss VFD to replace all brands of aging and failing drives. We will assist in the interface with your existing building automation.

Schedule your replacement now, when you don't have a crisis on your hands. You can eliminate downtime and save money for your company by proactively replacing your VFDs. Why spend extra time and money on repairs? A brand new drive comes with a warranty and a $30/hp rebate.

We will match the original utility rebate of $30.00 per horsepower on all installed replacement VFDs of all manufacturers' drives, running or broken.

Danfoss VFDs

The Danfoss series of variable frequency drives is specially designed for the unique requirements of HVAC applications.

Danfoss drives:

• are the most reliable drives on the market today
• are the most repairable drives on the market today
• have the longest life expectancy
• are the easiest to monitor
• are the easiest to operate

Standard features include:

• PID control
• DC link reactor for harmonics control
• Energy optimizing capabilities
• Low motor noise
• High efficiency

Danfoss Graham is the specialist in applying AC drives to HVAC applications, and they supply pre-engineered bypass panels and other controls as required.

A variable-frequency drive is also known as:

• adjustable-frequency drive (AFD)
• variable-speed drive (VSD)
• AC drive
• microdrive
• inverter drive
• variable voltage variable frequency drive (VVVF)