• Reznor UDX 100,000 BTU Propane Unit - NUDX100,N1036538R
  • Reznor UDX 100,000 BTU Propane Unit - NUDX100,N1036538R
  • Reznor UDX 100,000 BTU Propane Unit - NUDX100,N1036538R
  • Reznor UDX 100,000 BTU Propane Unit - NUDX100,N1036538R
  • Reznor UDX 100,000 BTU Propane Unit - NUDX100,N1036538R
  • Reznor UDX 100,000 BTU Propane Unit - NUDX100,N1036538R
  • Reznor UDX 100,000 BTU Propane Unit - NUDX100,N1036538R
  • Reznor UDX 100,000 BTU Propane Unit - NUDX100,N1036538R
  • Reznor UDX 100,000 BTU Propane Unit - NUDX100,N1036538R
  • Reznor UDX 100,000 BTU Propane Unit - NUDX100,N1036538R

Reznor UDX 100,000 BTU Propane Unit - NUDX100,N1036538R

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  • Full Interior Kit
  • Since 2009

Reznor UDX 100,000 BTU Propane Unit  - NUDX100,N1036538R

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.

Features
  • 83% AFUE Efficiency
  • TCORE2 titanium stabilized aluminized steel heat exchanger
  • Multi-try, direct spark ignition with time lockout
  • Vibration/noise isolated fan and venter motors designed for low noise operation
  • External status indicating LED that blinks if there is a problem that needs service
  • 7-segment display board that shows fault code for quick and easy troubleshooting
  • Optional integrated downturn nozzle and integrated vertical louvers
What our Experts Think
  • Right‑sized power for larger spaces
    With 100,000 BTU and ~83 % AFUE efficiency, this propane UDX heater delivers strong, consistent heat for large workshops, garages, and light commercial areas without excess fuel waste.
  • Pro‑grade durability you can count on
    Built with a TCORE2® titanium‑stabilized aluminized steel heat exchanger, it resists corrosion and wear—ensuring longevity in tough job‑site or industrial conditions.
  • Power‑vent design reduces heat loss
    The unit’s power vented configuration helps eliminate wasted heat up the flue, improving performance and reducing operating costs.
  • User‑friendly service & diagnostics
    Features like LED status indicators, easy access panels, and external gas connections simplify installation and maintenance—saving time and headaches for technicians.
  • Balanced airflow & comfort
    The axial propeller fan with vibration isolation delivers wide air circulation quietly and effectively, helping maintain even heat distribution across larger spaces.
  • Flexible mounting & application
    Designed for 2‑ or 4‑point suspension mounts, it adapts to both ceiling and wall installations depending on your space layout.

Q&A

Q: What is the heating capacity of this unit?
A: The UDX100 delivers ~105,000 BTU input (~87,000 BTU output), ideal for medium garages, workshops, and commercial spaces requiring reliable heat.

Q: What fuel type does the NUDX100 use?
A: Factory‑configured for propane (LP) operation with ETL approval for indoor commercial/industrial installations.

Q: How efficient is this propane unit heater?
A: It achieves ~83 % AFUE thermal efficiency, maximizing heat output while minimizing fuel usage.

Q: What heat exchanger technology does it include?
A: Features a TCORE2® titanium‑stabilized aluminized steel heat exchanger for durability and corrosion resistance.

Q: How does it handle ventilation and airflow?
A: Power‑vented design reduces heat losses up the flue, and an axial propeller fan circulates warm air evenly.

Q: Is the operation quiet?
A: Yes — built with vibration‑isolated fan and venter motors for reduced noise during heating cycles.

Q: Is installation and service easy?
A: Includes external gas connection and is designed for 2‑ or 4‑point suspension mounting, simplifying installation and maintenance.


Maintenance Tips
  • Annual heat exchanger inspection: Check the TCORE2® titanium‑stabilized aluminized steel exchanger for soot, corrosion, cracks or buildup — clean lightly to maintain ~83 % AFUE and safe operation.
  • Burner & flame check: Clean burner tubes and inspect flame quality (mostly blue, steady) to ensure efficient propane combustion.
  • Clear venting & intake paths: Ensure power‑vent flue and combustion air openings are free of debris to maintain proper draft and avoid backdrafting.
  • Fan & motor care: Remove dust from the axial propeller fan and check for balance, noise or looseness that can reduce airflow.
  • Electrical & ignition checks: Tighten wiring, inspect direct spark ignition and clean flame sensor/LED diagnostics for reliable starts.
  • Gas supply inspection: Check propane line fittings for leaks and proper regulator operation before each season.
  • Keep exterior clean: Dust and debris on the cabinet and louvers restrict airflow and heat transfer.
  • Professional annual service: Have an HVAC technician perform combustion tests and safety control checks to maximize efficiency and lifespan.

  • DIY Install

  • OEM-Inspired Fit

  • Air Bag Friendly

  • 3 Year Warranty

  • Custom Colors

  • Work Gear & Pet Friendly

  • Since 2009

Why Truck Owners Choose Seat Covers Over Reupholstery

Traditional Reupholstery TruckLeather Seat Covers
Upfront Cost

$2500-$4000+

$399-$999

Vehicle Downtime

Days or Weeks

None

Risk Level

Permanent, No Undo

Fully Reversible

Best Use Case

Full Restorations

Restoration or Prevention

Resale Value Impact

High Cost to Recover

High ROI

TruckLeather gives you 90% of the visual and comfort upgrade at a fraction of the cost of reupholstery without giving up your truck.

WHEN YOUR TRUCK DESERVES THE BEST. UPGRADE YOUR TRUCK'S INTERIOR WITH THE INDUSTRY DEFINING TRUCK SEAT COVERS WE HAVE REFINED OVER 15 YEARS.

  • Will these work if my seats are already damaged?

    Yes. TruckLeather seat covers are commonly used to cover cracked, faded, or worn-out truck seats while preventing further deterioration.

  • How do these compare to cheaper seat covers?

    Universal covers focus on price. TruckLeather focuses on fit, durability, and long-term protection.

  • Are these permanent?

    No. They’re fully removable and won’t alter your factory seats.

Slip on leather seat covers
Slip on leather seat covers

Easy At-Home Installation

No special tools. No upholstery shop. No risk.

Our seat covers are designed for DIY installation, with step-by-step instructions and support available if you need it. Most customers complete installation in a few hours.

STEP BY STEP INSTRUCTIONS
Red and Black Custom Leather Seat Covers for Ford F150

Your Truck.Your Style.

Custom orders are our jam. Our custom program makes for a truly bespoke experience leaving only your imagination for the thousands of possibilities. If you're looking for the best truck seat covers then look no further!

Clazzio seat cover

Airbag Safe

Our seat cover construction has a high priority for allowing the OEM seat airbags to properly deploy when needed.

The proprietary thread design allows for the SRS systems to continue to function in a collision situation.

Clazzio Leather Covers

Made for your truck.For life.

Our seat covers are made exactly for your interior setup, perfect every time.

We offer most color setups in stock such as all black and all dark gray, however our custom color program is ready for your creative setups.

FAQ

Learn more about our truck seat covers with the frequently asked questions below.

DIY installation instructions are included for your specific application and takes around 2-3 hours for full interior installation.

The specific application specific instructions provided have step by step photos of how to install your new seat covers as well as tips and tricks. 

If you don't feel comfortable installing the seat covers yourself, then any local upholstery shop should be able to install them no problem.

Some vehicles do require cutting in certain spots like the power seat control panel, but nothing too major.

These leather seat covers are 100% slip on seat covers and do not require removal of your existing seat material.

Yes, our seat covers are fully compatible with factory heated and cooled seats.

Clazzio (our manufacturer) offers a 3 year warranty that is honored on any manufacturer defects.  This does not include normal wear and tear that comes with use on these seat covers.

You will receive the full interior seat cover set which includes bottom cushion covers, top cushion covers, head rest covers, and depending on the vehicle, arm rest covers.  It is a total makeover.

They are made by 11i-USA who manufactures these under the name Clazzio. They operate a large dealer system and we are a top nationwide dealer for them.

It depends if you ordered a custom set or not.


If you ordered a set that is in stock, then it will reach you in approximately 5-6 days via UPS ground (continental U.S.). Most all black or all dark gray sets are in stock, but we will let you know upon your order.


If you ordered a custom set, then it will take 8-10 weeks (occasionally longer) to arrive from Japan due to custom manufacturing, freight time, and US customs holding time.

Maybe! Contact us to see if your specific vehicle isn't listed on our site, or if you have any questions about the application.

We do have other applications such as passenger vehicles and two door cars as well. Just contact us!

Need just a bottom cushion replacement or another single piece? Contact us for pricing.

We can also supply just the front or rear seats if that is all you need.

Since our seat covers are manufactured for every application specifically, they account for features like these in your interior. Our development team uses a laser guided measuring system to ensure the best fitment for our seat covers.

For straps to fold down seats, they will include a cutout for those to loop through.  For bottom plastic trim on your front seats, the covers are meant to tuck in to those for a great, OEM+ fitment.

Yes, our seat covers are made with special stitching construction on our per application basis (not universal). The design allow for our covers to break at the specific points where the side airbags will detonate.

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