Why HVAC Systems Use Variable Frequency Drives

Traditional HVAC motors often run at full speed even when full airflow or
pumping capacity is not needed. A Variable Frequency Drive adjusts motor
speed based on demand, helping reduce energy usage while improving system
performance.

• Lower electrical usage
• Softer motor starts
• Reduced inrush current
• Less stress on belts, bearings, and gearboxes
• Better airflow and pressure control
• Quieter operation
• Longer equipment life

Common HVAC Applications

Air Handling Units – Control blower motor speed based on occupancy, pressure, or temperature demand.
Condenser Fan Motors – Reduce cycling and improve efficiency on rooftop units and condensers.
Cooling Towers – Maintain precise temperature control while lowering energy usage.
Exhaust & Ventilation Fans – Adjust airflow dynamically for warehouses, commercial kitchens, shops, and industrial spaces.
Chilled Water & Hydronic Pumps – Match pump speed to real system demand instead of running at 100% continuously.
Dust Collection Systems – Improve airflow management while reducing startup shock and power consumption.

Why Choose Invertek Optidrive™ Drives?

• Simple Setup: Many HVAC applications can be configured quickly.
• Energy Savings: Variable-speed operation helps reduce unnecessary motor power consumption.
• Smooth Soft Starting: Reduce startup current and eliminate harsh motor starts.
• Compact & Reliable: Industrial-grade construction with flexible mounting options.
• Indoor & Outdoor Models Available: Choose IP20 panel-mount or IP66 outdoor-rated configurations.
• Excellent for Retrofit Projects: Upgrade existing HVAC equipment without replacing motors.

Recommended HVAC VFD Series

Invertek Optidrive E3

Ideal for fans, blowers, pumps, and general HVAC motor control.

Best for simple commissioning, cost-effective retrofits, and light-to-medium
duty applications.

Invertek Optidrive P2

Ideal for larger commercial systems, industrial HVAC, and more demanding applications.

Best for advanced control, heavy-duty operation, and larger horsepower motors.

What Size HVAC VFD Do I Need?

To properly size a VFD, you typically need the motor horsepower, motor voltage, full-load amps, available input power, and application type.

The most accurate sizing method uses the motor’s nameplate amperage.

Complete HVAC VFD Solutions

We can also help with:

• Outdoor enclosures
• Disconnects
• Line reactors
• Remote keypads
• Pre-configured packages
• Installer support
• Replacement VFD cross-references

Why Buy From Inverters R US?

Technical Expertise – We help customers size and configure VFDs correctly the first time.
Fast Shipping – Stocking inventory and rapid fulfillment.
Real Support – Talk to knowledgeable staff that understands motors, HVAC systems, and drive applications.
Trusted Since 2003 – Serving contractors, installers, OEMs, facilities, and industrial customers nationwide.