Commercial Equipment > Commercial | Industrial Heat > Gas Unit Heaters > Reznor UDAP-125 125,000 BTU V3 Power Vented Gas Fired Unit Heater

Reznor UDAP-125 125,000 BTU V3 Power Vented Gas Fired Unit Heater

Reznor Reznor
Product Code:REZNOR-UDAP125
Price: $1,359.95 Sale Price: $1,068.00
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  • Description

    Reznor heaters have a long-established reputation for quality heat in a variety of applications. The V3 Series unit heaters were built to improve upon Reznor’s already excellent technology, and feature better efficiency, easier installation, and a new design both in and out.

    Boasting an impressive 83% thermal efficiency, Reznor’s UDAP heaters provide a high-quality heat performance and are available in 14 sizes to suit a range of heating needs. The 30,000 - 125,000 BTU models are all approved for use in commercial settings as well as attached residential garages, including this unit, the UDAP-125 (125,000 BTU), which is ideal for mid-size to larger spaces.

    The V3 Series heaters are easy to install, secured in place from 2 or 4 suspension points or by an optional hanger kit that allows for ceiling mounting. Electrical set-up is easy as well, with a low-voltage terminal strip on the outside of the cabinet that makes connecting control wiring simple with no panels to remove. All units also have a factory installed gas line nipple to the exterior of the cabinet, for easy gas service connection.

    Reznor has made improvements to both the ins and outs of their UDAP heaters, for better performance and quality of use. New features include Reznor’s patented TCore2 titanium stabilized aluminized steel heat exchanger, as well as the addition of a "G" terminal to the strip and a newly designed circuit board, which allows for fan-only operation without adding relays. Externally, Reznor has developed a sleeker design that shows no front or bottom hardware -- look for the unique white unit with deep red louvers, black side handle, and angled corner to know you have a genuine Reznor unit by Thomas & Betts.

    Optional Accessories

    Our most popular optional accessories (shown in the add to cart box at the top of the page) are available with this unit. Please visit the links below to see the full details for each of these items. Optional accessories should be added to the cart on this page to receive a discounted package price on that accessory.


    • Certified for commercial/industrial heating application
    • Has an additional approval for use in residential garage/workshop heating applications
    • 82% Thermal efficient ~ TOP in its class!
    • 50-60°F Rise range
    • Tcore2 titanium stabilized aluminized steel heat exchanger
    • Patented single burner combustion system including a one-piece burner assembly
    • 115/1/60 Supply voltage
    • 115 Volt open fan motor with internal overload protection
    • Transformer for 24-volt controls
    • Integrated circuit board with diagnostic indicator lights
    • Multi-try direct spark ignition with timed lockout
    • Fan relay (included on the circuit board)
    • Single-stage natural gas valve (field adjustable for operation to 9,000 ft. elevation*)
    • Vibration/noise isolated fan and venter motors ~ designed for low noise operation
    • 2-pt and 4-pt Suspension ~ standard on all sizes
    • External terminal strip for 24-volt wiring
    • External gas connection
    • Full fan guard ~ engineered for safety
    • Improved cabinet design with less visible hardware

    *Standard altitude up to 2000 feet requires no adjustments. 2001 to 6000 feet require adjusting the valve outlet pressure. Over 6000 feet require High Altitude Kit. (Please Call Customer Service at (877) 847-0050 for High Altitude Kit Pricing and Availability.)
  • Tech Specs

    Separated Combustion Chamber
    Heating BTUs (Input)
    Thermal Efficiency
    Heating BTUs (Output)
    Gas Connection Size
    Vent Connection Size (in.)
    4 "
    Control Amps (24 Volt)
    Full Load Amps (115 Volt)
    Circuit Breaker Size (Amps)
    Normal Watts Consumption
    Discharge Air Temperature Rise
    Discharge Air Opening Area
    Output Velocity (FPMs)
    Noise Level (dBA)
    Width (in.)
    25.625 "
    Depth (in.)
    21.563 "
    Height (in.)
    23.125 "
    Net Weight (lbs.)
    Parts Warranty
    1 Year
    Labor Warranty
    Warranty Detail
    Extended nine (9)-year, non-prorated warranty on the heat exchanger, burners, and flue collection box assembly. Extended four (4)-year, non-prorated warranty on all electrical and mechanical operating components

  • Manuals and Guides