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Reznor UDX 75,000 BTU Natural Gas Unit Heater

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Reznor

In stock

Model

UDX-75

55752

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Suggested Retail $1,909.00 Your Low Price Special Price $1,199.00

Product Features

Ideal for smaller residential garages, workshops, and workspaces
Built with corrosion-resistant materials for enhanced durability
Suitable for ceiling or wall mounting with multiple venting options
Advanced fan design ensures quiet and efficient heating

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Thermostats

Mounting Brackets

Downturn Nozzles & Vertical Louvers

Vent Kits

Qty

Accessories for this product

Description

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 75,000 BTU Natural Gas Unit Heater; Model UDX-75

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

Product Specifications

More Information
Reznor UDX 75,000 BTU Natural Gas Unit Heater
SKU	UDX-75
Weight (in lbs)	81.000000
Brand/Manufacturer	Reznor
Replaces	UDX-75
Additional Information	Air Throw: 57 Feet
Furnace Efficiency / AFUE	80-85%
Heating BTU	70,000-79,999
Maximum CFM	961
Decibel Level (dBA)	49dB at 15ft
Flue Outlet	4"
Watt	217 Watts
Efficiency	83%
Electrical	115 Volt 1 Phase 60 Hertz
Amperage Requirement	3.7 Amps
Connection	1/2" NG/LP Connection to Gas Valve
Fuel Type	Natural Gas
Height	16 3/4"
Width	27"
Depth	31 29/32"
Warranty	9 Year Heat Exchanger, Burner, and Flue Collection Box Assembly; 4 Year All Electrical and Mechanical Components
Resources	Reznor UDX Installation Guide Reznor UDX Venting Guide Reznor UDX Gas Conversion Guide Reznor Conversion Kit Installation Manual Reznor UDX Replacement Parts List Reznor UDX Downturn Nozzle Instructions Reznor Unit Heater Catalog Reznor Unit Heater Brochure Reznor Warranty Info You will need AdobeÂ® AcrobatÂ® Reader to view PDF documents.
Safety Information	PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here.

Reviews 48

Questions and Answers

Customer Questions

Does this unit have a wireless thermostat?

This model currently does not have an applicable wireless thermostat. If you have any further questions, please call us and we will be happy to assist you.

Does the unit come with the Reznor specific vent cap?

The Reznor vent cap will not come with this unit when ordered but can be bought as a separate accessory. If you have any further questions we recommend that you give us a call. Thanks!

Can this UDX 75,000 BTU heater come with the LP gas conversion already installed?

Hello, thanks for your question. Unfortunately, with Reznor units the liquid propane conversion will not come pre-installed and will have to be manually installed. If you have any further questions, we recommend that you give us a call. Thanks!

Can this heater be used to heat a home?

These heaters can be used in a garage, but they are not approved for use in indoor living spaces. If you have any further questions, please feel free to give us a call! Thanks.

Why Choose Reznor Unit Heaters?

Reznor unit heaters are engineered for powerful, energy-efficient heating in commercial, industrial, and residential spaces. With durable construction and advanced technology, these heaters deliver reliable warmth, even heat distribution, and flexible installation options—making them ideal for warehouses, garages, workshops, and more.

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