Reznor UDX 400,000 BTU Natural Gas Unit Heater

Customer reviews
Rating:
4.9 out of 5
Out of stock
By

Reznor

Out of stock
Model

UDX-400

ID

55762

Reznor model UDX gas-fired unit heaters are great for space heating applications. These units are power vented to eliminate heat losses up the flue pipe. Each heater features a two-tone black and white powder coated, scratch-resistant paint scheme and has clean rounded corners and edges with no visible screws or fasteners. For air circulation, the UDX series utilize an axial propellor fan.


Included

  • Reznor UDX 400,000 BTU Natural Gas Unit Heater; Model UDX-400

Standard Features

  • 83% AFUE Efficiency
  • TCORE2 Titanium-Stabilized Aluminized Steel Heat Exchanger
  • Multi-Try Direct Spark Ignition with Time Lockout
  • Low Noise Operation with Vibration-Isolated Fan and Venter Motors
  • Status-Indicating LED Light
  • 7-Segment Display Board for Simple Troubleshooting
  • Optional Integrated Downturn Nozzle and Integrated Vertical Louvers
  • 2- and 4-Point Suspension Options
  • External Gas Connection for Ease of Maintenance and Installation
  • Includes 3 Horizontal Louvers
  • ETL Approved

Product Note

Reznor UDAP is the legacy model of the Reznor UDX

More Information
Reznor UDX 400,000 BTU Natural Gas Unit Heater
FeatureSpec
SKUUDX-400
Weight (in lbs)360
Brand/ManufacturerReznor
ReplacesUDXC-400
UPC663132434596
Additional InformationAir Throw: 113 Feet
Furnace Efficiency / AFUE 80-85%
Heating BTU400,000 BTU
Maximum CFM5123
Decibel Level (dBA)62dB at 15ft
Flue Outlet5"
Watt1086 Watts
Efficiency83%
Electrical115 Volt 1 Phase 60 Hertz
Amperage Requirement11 Amps
Connection3/4" NG/LP Connection to Gas Valve
Fuel TypeNatural Gas
Height34 1/8"
Width41"
Depth48 29/32"
Warranty9 Year Heat Exchanger, Burner, and Flue Collection Box Assembly; 4 Year All Electrical and Mechanical Components
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING

Customers Say

Owners report reliable heating performance across multiple shop sizes, including a 150,000 BTU model heating a 46x60x16 ft space quickly, a unit raising a 60x40x16 shop from 58°F to 70°F in 35 minutes, and a UDX 100 warming a 950 sq ft garage from 35°F to 70°F in 15–20 minutes, with one unit maintaining 60°F in -11°F conditions and another running flawlessly for three seasons in Northern Michigan. Installation is frequently described as straightforward, sometimes taking about four hours with a lift or requiring only minor venting modifications when replacing older Reznor models, though one buyer received an incorrect conversion kit that was promptly corrected and another cited poor delivery placement despite good packaging.

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Top reviews
  1. Reznor UDX 60K
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    The unit was packaged well, and the installation was straightforward. It’s heated my workshop in Northern Michigan for three seasons now, and it’s been flawless.

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  2. UDX200
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    Great looking heaters, and performs wells. great service.

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  3. Great support easy transaction
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    Great support and quality product will buy fromagain

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  4. Reznor 60K BTU
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    HVAC Direct delivered on time and unit was incredibly packaged for freight. The unit itself is performing quite well in an uninsulated garage. Keeps everything from freezing. I could not be happier with this purchase and my purchase experience. I will definitely purchase from HVAC Direct when its time to heat my 30x40 barn.

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  5. Outstanding product
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    Got a 46x60 shop with 16ft ceilings the reznor 150,000 btu heats it up fast runs quiet totally surprised how this unit performs

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  6. Fast delivery, great price, excellent packaging with zero damage. Easy to install.
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    Ordered to replace an old UDAP 45. Basically the same but taller. Fit fine as a hanging unit in the garage. Quieter and warmer output than the old one. Pretty much just unhooked the old one, unmounted it and mounted the new one with the same bolts, reattached connections with a slight modification to the venting. Free shipping and it still got here in less than a week. Overall, great experience with HVACDirect and the price was the lowest I could find.

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  7. Great heater
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    Easy installation, quiet and works very well!

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  8. Great purchase
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    We just installed this unit today and it heated my shop up from 58degs. To 70degs. In 35 minutes. The shop is 60x40x16 high.

    Review by

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