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AprilAire 8120X Ventilation Controller
AprilAire

AprilAire 8120X Ventilation Controller

The AprilAire 8120X is designed to meet modern ventilation requirements and comply with the latest building and energy codes, offering quick installation and setup to save time and money. It delivers superior comfort and energy efficiency compared to other economical ventilation options, with flexible configurations to fit virtually any application.

Features:

• Easy-to-read LCD screen
• Simple setup with three-button interface
• Can be set for Code or Comfort (factory default setting)
• 24-volt control
• Measures outdoor temperature to stop ventilation at
adjustable high and low outdoor temperature lockouts
• Measures indoor humidity to stop ventilation at adjustable
high and low humidity lockouts*
• Patented control programming maintains ASHRAE
62.2 even during high and low temperature
limit lockouts
• Installation flexibility—ability to override humidity and
temperature control
• Easy access to rater information (amount of CFM brought
into the home, etc.)
• Duct board bracket included for accurate indoor
humidity sensing

Specification
      • Overall Controller Dimensions: 4.11” W x 3.60” H x 1.59” D
      • Duct Opening Dimensions (for humidity sensor): 0.63” dia. in sheet metal; 5.75” x 5.25” for duct board (bracket included)
      • Input Power for Control: 24VAC, 2VA (from HVAC system transformer)
      • Damper Output (Vent and GH): 10VA @ 30VAC max
      • Input Voltage: 18–30VAC
      • Controller Power Consumption: 2.0VA
      • HVAC Equipment Terminals: R, C, W, Y, O, GS, GH
      • Equipment Compatibility: Furnace and AC or Heat Pump
      • Outdoor Temperature Sensor Inputs: Thermistor (provided)
      • Compliance: ASHRAE 62.2
      • Installation Temperature Limits: 20°F–140°F
Technical specification
  • Unique ref.aprilaire-8120x-ventilation-controller
  • Product familyTemperature Controls
  • Product groupThermostat
  • TypeObject (single object)
  • Date of publishing2025-11-07
  • Edition number1
Related
  • Material mainMetal
  • Designed inUnited States
  • Manufactured inUnited States
Classification
  • BIMobject CategoryHVAC - Control Panels
  • Uniclass 2015 CodePr_75_50_18_17
  • Uniclass 2015 DescriptionControl panels
  • CSI MasterFormat 2014 Code40 74 00
  • CSI MasterFormat 2014 TitleTemperature Measurement
  • OmniClass Number23-27 11 11 15 11
  • OmniClass TitleDigital Temperature Controllers

Region availability

North America
Anguilla
Antigua and Barbuda
Aruba
Barbados
Belize
Bermuda
British Virgin Islands
Canada
Caribbean Netherlands
Cayman Islands
Collectivity of Saint Martin
Costa Rica
Cuba
Curaçao
Dominica
Dominican Republic
El Salvador
Greenland
Grenada
Guadeloupe
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Montserrat
Nicaragua
Panama
Puerto Rico
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and the Grenadines
Saint-Barthélemy
Sint Maarten
The Bahamas
Trinidad and Tobago
Turks and Caicos Islands
U.S. Virgin Islands
United States
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