HDD & VDD Direct Drive Horizontal and Vertical Blower Coil Units

Highly efficient commercial HVAC solution

Need reliable heating and cooling for your commercial space? Keep building occupants comfortable with our efficient direct drive horizontal and vertical blower coil units.

  • CFM: 250 to 5,000 CFM
  • Piping packages with 2-way or 3-way on/off, modulating, or proportional control valves, and fixed or adjustable PICV flow control devices
  • Single speed, 0-10VDC proportional, or four speed adjustable motor control options
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Product Overview

When it comes to your business, we know you want only the best—and that starts with making sure your commercial space is comfortable. That’s why we created this top-of-the-line commercial HVAC system, equipped with direct drive EC motor technology, best-in-class airflow and coil capacity, and a single-point power connection. And we know your commercial space requires a custom approach to heating and cooling—that’s why our blower coil units are factory set to your design point, and include flexible design options for sound control, size, and other specifications.
Product Overview


Excellent Indoor Air Quality (Iaq)
Excellent Indoor Air Quality (IAQ)

Sloped drain pans, high performance filters and cabinets that can be insulated improve indoor air quality (IAQ) and reduce sound levels.

Design Flexibility
Design Flexibility

An extensive range of options include chilled-water or direct expansion coil for cooling, hot water, steam, or electric coil for heating.

Optimized Performance
Optimized Performance

ENVIRO-TEC fan and blower coil units are manufactured from galvanized steel and designed to meet the highest standards of quality to maximize performance.

Convenient Installation
Convenient Installation

Component flexibility and units that can ship fully assembled reduce installation time, labor, and cost.


  • Horizontal and vertical direct drive units available with highly efficient EC motor technology.
  • Piping packages with 2-way or 3-way on/off, modulating, or proportional control valves, and fixed or adjustable PICV flow control devices.
  • Foil-faced fiberglass or closed cell foam insulation options
  • 18 month Limited Warranty
  • Flexible design: chilled-water or direct-expansion coil for cooling and hot-water, steam, or electric coil for heating; 2- or 4-pipe
  • Excellent indoor air quality: low-leak dampers, 2" pre-filters and 4" final filters available
  • Class-leading airflow, coil capacity, and pressure capabilities with multiple motor-control options.

Technical Resources

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