Room Sanitizer - Doubl-Kold

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High Output Ozone Generator

Room Sanitizer

The  Air-Zone XT-28000 features 12 permanently mounted ozone elements inside  the unit that produce pure ozone with no measurable nitrogen oxides.   The elements are easy to clean and easy to replace.  It has 6 power  transformers that are individually selectable. Each unit comes with a  filter in place to protect the internal components from dust & dirt  and a package of 2 additional filters.  The Air-Zone XT-28000 has an  optional industry standard double output 4 inch duct hose adapter,  making it possible to direct ozone into two spaces without exposing the  machine to the ozone.  This also allows the machine to have a clean air  draw so more ozone can be generated into the space.

They  are designed for continuous or timed high ozone shock treatments.  Ozone  output is variable at 9300, 18600, or 28000 mg/hr.  The internal  countdown timer allows the unit to be run from 1 hour up to 24 hours.   The machine can also be set to continuous mode if the countdown timer is  not used.

The XT-28000 is powerful enough to shock treat up to 7,000 square feet.

Each unit comes with a factory only 5-year warranty.


  • Rated Ozone Output Per Hour: Variable 9300 mg/hr., 18600 mg/hr., 28000 mg/hr.
    MAX. ACTUAL OZONE OUTPUT: 29,000 mg/hr (ozone output verified by SGS)
  • Built in Electronic Timer: 1 hour to 24 hours, or continuous
  • Generation Method: Corona Discharge, US Patented Xetin ozone
  • Stainless Steel Heavy Duty Industrial Case
  • Optional Double 4” Industry Standard Output Vent
  • Available in 220 Volts as a special order
  • High Voltage Transformer Output: 8,000V, 12 transformers
  • Ozone Air Flow Rate: 180 CFM per fan; two heavy duty precision ball bearing fans
  • Electrical Source: AC 115V, 60 Hz
  • Electrical Consumption: 1.9 – 4.6 Amps, 228 – 552 Watts
  • Dimensions: 26.27″ X 21.25″ X 9.05”
  • Weight: 50 lb.

Note: Cannot be shipped to California

The XT-28000 is designed to be serviced by the owner.   Air-Zone, Inc. will provide the necessary information to troubleshoot  the unit.  If the unit is still under warranty, Air-Zone, Inc. will  assemble a repair kit at no charge to the owner other than shipping cost  (Remember that elements are warranted for 6 months only).  If the unit  is no longer under warranty, Air-Zone, Inc. will assemble a repair kit  and charge for the parts & shipping.  A complete set of instructions  to perform the necessary repairs will be included in every repair kit.
© Copyright 2000-2018 Northwest Refrigeration Contractors, Inc.     All rights reserved.
3401 Ahtanum Rd. Yakima, WA 98903
Phone: (509) 248-9588 Toll Free: (877) 210-3208 Fax: (509) 453-6538
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