A virtually unlimited range of components and options are available with Mainstream’s custom air handling units. Whether you are looking for a unit with standard fan, coil and filter components or a complex unit with dual airstreams, desiccant dehumidification and energy recovery options, Mainstream will provide a unit that will exactly meet your need.

Mainstream has established relationships with manufacturers to supply components that will meet our requirements for quality while providing excellent product support and flexibility.

Mainstream can easily adapt to work with our client’s vendor of choice for many different types of components. Customer-supplied controls are commonly factory-mounted by Mainstream according to specific customer requirements.

Custom AHU

Fans

  • Belt-Drive or Direct-Drive Plenum
  • Centrifugal DWDI Scroll Housing
  • Dual or multiple fan configurations
  • Protective screens and OSHA belt guards
  • Extended lubrication lines
  • Isolation bases w/seismic restraint
  • Premium efficiency ODP, TEFC, or XP motors
  • Factory mounted and wired VFD’s

Control Dampers

  • DWDI Centrifugal, SWSI Plenum, Vaneaxial
  • Ultra-low leakage, aluminum airfoil blade dampers
  • Electric or pneumatic actuators, factory or field installed
  • Outside air hoods with integral moisture eliminators
  • Airflow measuring devices
  • Multi-zone discharge configurations

Coils

  • Water, steam and direct-expansion coils
  • Optional coatings for corrosion protection
  • Stainless steel, triple-sloped drain pan under cooling coils
  • Stacked coils mounted on racks to allow individual removal

Humidifiers

  • Stainless steel multiple-tube dispersion
  • Optional short-absorption distance design

Heat Recovery

  • Heat pipe coils
  • Runaround coils
  • Air-to-air plate heat exchangers
  • Enthalpy wheels
  • Bypass dampers

Controls

  • Variable Frequency Drives
  • Disconnect Switches and Enclosures
  • Sensors
  • Single-point power connection

Filters

  • Pleated panel pre-filters
  • Pocket or cartridge type hi-efficiency filters
  • HEPA filters with gel-seal frames
  • Galvanized, st. st., and aluminum frames
  • Optional stainless steel frames
  • Dial or digital type filter gauges