ComfortSite Login

Trane ComfortSite is an extranet site designed to save you time. With your secure login, you can:

  • Order Equipment, Parts, Literature and track Order Status
  • View product literature
  • Register for Training programs
  • Complete Warranty requirements online
  • Search for specific Product Information
  • Use interactive Product Support functions
  • View and print invoices through Account Track Online
  • and More
Log In

Trane Connect

This is the login for Trane® Connect™ and other Trane® commercial applications. Trane® Connect™ is our secure, cloud-based customer portal to access your building systems to remotely monitor and manage building systems, and conduct routine maintenance.

Log In

VariTrane® Low-Height Fan-Powered Terminal Units

FP_LH 1.jpg

VariTrane® Low-Height Fan-Powered Terminal Units

VariTrane® variable-air-volume (VAV) units lead the industry in quality and reliability and are designed to meet the specific needs of today’s applications. VariTrane low-height fan-powered terminal units are specifically designed for the applications where available height is restricted. The compact height design does not negatively influence the valuable features. These terminal units reduce energy use and operating costs with Electronically Commutated Motor (ECM) and modulating airflow control algorithms. Additionally, VariTrane low-height fan-powered terminal units are universally handed and optionally equipped with factory mounted and commissioned unit controllers, which reduce installation effort and startup time. This generation of VariTrane units builds upon history and expands the products into the most complete VAV offering in the industry.

Low-height parallel fan-powered units provide the benefit of a 10.5 inches casing height and offer energy savings due to intermittent fan control. The fan energizes only in heating mode when space needs heat. When energized, the fan can be controlled for constant-speed or variable-speed operation. Additional energy savings are obtained by using warm plenum air for free reheat. Motor heat is never wasted in parallel units. They are an excellent choice when plenum spaces are tight and minimal zone heating is needed.

Low-height series fan-powered units provide the benefit of a 10.5 and 12 inches casing height. The fan in series of fan-powered units is always energized in occupied mode. When energized, the fan can be controlled for constant-speed or variable-speed operation. They are common in applications such as conference rooms, cafeterias, etc., that desire higher supply airflow rates at all conditions.


  • Available Primary Air Inlet Sizes: 4 in. to 10 in. round and 8 in. x 14 in. rectangular
  • Airflow Range: 0 - 1,950 cfm
  • Available parallel and series configuration with optional hot water and electric reheat
  • Standard IAQ metal encapsulated insulation edges and top/bottom access panels
  • Optional Electronically Commutated Motor (ECM) and modulating airflow control algorithms
  • Optional Thinline Suppressor induction air inlet sound attenuator
  • Optional LEED wrap for preventing contamination during the construction phase
  • Optional factory mounted, wired, tested, and commissioned pressure independent controls
    • DDC (Comm3 or Comm 4), LonTalk, BACnet Communication
    • Trane® Air-Fi® Wireless Communication
  • Additional factory mounted, wired, tested options
    • Modulating actuator
    • Power fuse
    • Control power transformer
    • Toggle on/off switch
    • Duct temperature sensor
    • Modulating hot water control valves and piping packages


Product Literature


Installation Operation Maintenance (IOMs)

Related Offerings


Building Systems Upgrades

Technology continues to evolve - as do cyber-security defenses, and IT compatibility requirements, and customers’ productivity expectations.  Trane, as a leading BAS Controls provider, remains current with latest technology trends by innovating to deliver our customers secure, compatible, and feature-rich systems. By the time a typical building is a few years old, its systems are already falling behind. Trane can maintain a high performing building by keeping building automation, HVAC, lighting and central plants up to date with the latest BAS innovations.