Products Unit Heaters UEAS


UEAS Cutaway
UEAS Installation
UEAS Installation
UEAS condensate piping
Installed UEAS
UEAS vent
burner flame
Single Orifice

Unit Heaters Video Overview

Since 1888 Reznor unit heaters have been keeping you warm.

Overview of Reznor HVAC

Reznor is dedicated to providing effective, value-conscious solutions to your Heating Ventilation and Cooling needs.

1988 - Reznor HVAC Brand 100 Year Anniversary Video

Created in 1988, this video celebrates the 100th anniversary of the Reznor HVAC equipment brand - founded in 1888 by George Reznor in Mercer, PA.

Reznor 1930s Factory Video

This film was taken in the early 1930s to show the "modern" Reznor manufacturing facility.


Reznor's UEAS ultra high efficiency, gas-fired separated combustion unit heaters are available in 4 sizes ranging from 130,000 to 310,000 BTUH gas input. Heaters are designed for up to 93% thermal efficiency and are approved for installation in the United States and Canada by ETL.




Heating Range ( MBH )

Airflow Range ( CFM )

Heating Efficiency ( Gross )

Standard Features

  • Up to 93% Thermal efficient
  • 50-60 degree F Rise range
  • Arranged for use with natural gas (propane conversion kit included with unit)
  • NEW Tcore3   409 stainless steel heat exchanger
  • NEW patented Tcore single burner combustion system including a one-piece burner assembly
  • NEW extruded aluminum secondary heat exchanger (patent pending)
  • 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 ignition with 100% lockout
  • Fan relay (included on the circuit board)
  • Single-stage natural gas valve (field adjustable for operation to 10,000 ft. [3,000 meters] elevation)
  • Vibration/noise isolated fan motor
  • Sealed control compartment houses all electrical components
  • 48 frame, ball bearing, PSC venter motor
  • 4-point Suspension
  • Built-in disconnect switch (20A @ 115V Rating)
  • External terminal strip for 24-volt wiring
  • Sealed junction box for supply wiring
  • External gas connection
  • Fully gasketed door panel with safety door switch
  • Full fan guard ~ engineered for safety
  • Improved cabinet design with less visible hardware and a NEW Reznor appearance
Optional Features
  • Totally enclosed fan motor (115 V only)


7 Files


Unit Heater Marketing Catalog
Unit Heater Marketing Catalog
Download File
1.4 MB
Comp Edge: The V3 Series heritage
Competitive Edge: The V3 Series have more innovations and technological advances because they are produced by the Number One manufacutrer in the world
Download File
371.8 kB
Comp Edge: Model UEAS is the most recent generation in high efficiency unit heaters
Competitive Edge: Model UEAS is only the most recent generation in high efficiency unit heaters, with a track record of more than 25 years
Download File
326.5 kB
Comp Edge: With over 70 years of production, Reznor Unit Heaters are the proven leader in the industry
Comp Edge: With over 70 years of production, Reznor Unit Heaters are the proven leader in the industry
Download File
305.1 kB
Energy Edge: The high fuel efficiency, Model UEAS can save the end user on their heating bill and earn LEED points for the Engineer
Energy Edge: Because of the high fuel efficiency, Model UEAS can save the end user on their heating bill and earn LEED points for the Engineer
Download File
365.2 kB
Energy Edge: Condensing Gas Heating (90%+ Efficient)
No matter what region you are in North America, Heating makes up the majority of the average building energy usage. By using Reznor condensing gas heating equipment (over 90% fuel efficient), you can make a big impact on the overall utility bills.
Download File
453.2 kB
General Product Brochure
Overview brochure covering the Reznor product line.
Download File
2.3 MB

Technical Data
4 Files

Technical Data

Catalog - Unit Heater
Unit heater catalog
Download File
4.4 MB
Tech Spec - UEAS
Description, options, & dimensions for Model UEAS
Download File
467.4 kB
Submittal - Options - Unit Heater
Options available for gas fired unit heaters
Download File
1.0 MB
Submittal - Separated Combustion
Separated combustion technical information
Download File
164.7 kB

10 Files


Unit Installation Manual - UEAS
UEAS Installation Manual
Download File
2.4 MB
Parts Manual - Model UEAS
UEAS Parts Manual
Download File
1.8 MB
Conversion Info - UEAS Ignition Conversion
Ignition conversion kit instructions for Model UEAS units built before March 2013
Download File
1.2 MB
Option - Installation - Thermostat Bracket (Unit Mounted) Assembly
Instructions for installing a unit mounted thermostat bracket
Download File
304.1 kB
Option - Installation - Downturn Nozzles - V3
Assembly instructions for downturn nozzles for Models UDAP, UDAS, UDBP, UDBS, & UEAS
Download File
304.7 kB
Option - Installation - Multiple Heater Control Installation
Installation instructions for multiple heater control system
Download File
491.0 kB
Option - Installation - Vent/Combustion Air Kits Installation
Instructions for installing vertical or horizontal vent/combustion air kits for separated combustion
Download File
304.5 kB
Option - Installation - Vertical Louvers - V3 Series
Assembly instructions for vertical louvers for Models UDAP, UDAS, UDBP, & UDBS
Download File
202.6 kB
Parts Manuals - Functional Replacement Fan/Blower Controls and Limit Controls
 Parts manual for functional replacement fan/blower controls and limit controls
Download File
273.6 kB
Field Service - Replacement of Discontinued Relays
Installation for kits designed to replace relays no longer available from suppliers. Applies to all Reznor units using obsolete relays.
Download File
340.4 kB

Other Files
1 File

Other Files

Warranty Statement
Reznor equipment limited warranty statement
Download File
175.7 kB

Case Study : Reznor High Efficiency Unit Heater Cuts Natural Gas Usage 24%

Reznor high efficiency unit heaters saved warehouse owner 24% on their annual heating bill.