1.866.433.8335 info@ventilationdirect.com
1.866.433.8335 info@ventilationdirect.com
Custom Orders or Expert Advice: 1.866.433.8335

HVAC Unit

Also called a Rooftop Unit (RTU) or a Dedicated Outdoor Air System (DOAS)

VXRTU HVAC Unit Series

Free shipping in continental US
We ship to Canada! Contact us

Fast Lead times on VXRTU!  Standard units can ship in as fast as 1-2 weeks.
Please contact us with your specific requirements and location for a price and lead time quote.

Ventilation Direct's Dedicated Outdoor Air System (DOAS) is the ideal HVAC solution, offering exceptional energy savings and precise comfort and humidity control in applications handling up to 100% outdoor air.

Ventilation Direct's DOAS is designed from its core to conserve energy and reduce operating costs. Its rare earth magnet inverter scroll compressor eliminates excessive cycling, premature system aging, inefficient hard starts, and unnecessary energy consumption. Modulating technologies allow it to deliver high efficiencies at part-load conditions.

Ventilation Direct's Rooftop Unit (RTU) contains fully modulating refrigeration and optional hot gas reheat components that deliver the exact amount of air required at the desired temperature and humidity. Variable speed components allow the system to adjust heating and cooling capacity to match the required load. This provides consistent temperatures throughout the space and avoids large swings often associated with single-stage equipment.

Ventilation Direct's DOAS achieves an impressive 21.3 IEER rating (Integrated Energy Efficiency Ratio), exceeding the ASHRAE 90.1-2016 IEER standard by more than 1.5x. Designed with the future in mind, the system is positioned to exceed rising IEER requirements for years to come.

Every Ventilation Direct DOAS is equipped with 24/7 remote system monitoring at no monthly subscription cost. This allows users to make remote adjustments, diagnose potential faults, and access system analytics from any internet-connected device.

Ventilation Direct offers unmatched factory service and technical support through its rapidly expanding nationwide service team. Each local service technician undergoes extensive in-house training to ensure needs are quickly met and issues are thoroughly addressed. Since the Rooftop Unit is a fully standardized equipment line, service technicians are able to stock most replacement parts on their trucks, eliminating long lead times commonly associated with service visits. Additionally, Ventilation Direct's DOAS is designed with serviceability in mind, incorporating multiple convenience features to make support visits smooth and efficient.

DOAS is a fully standardized equipment line, service techs are able to stock most replacement parts on their trucks, eliminating long lead times often associated with service visits. Additionally, Ventilation Direct's HVAC Unit is designed with service in mind, incorporating several convenience features to make support visits as smooth and efficient as possible.

Description SKU Price

Ventilation Direct's DOAS Features

  • Conserve Energy
  • Precise Control
  • Superior Efficiency
  • Industry Best Warranty

Ventilation Direct's Dedicated Outdoor Air System (DOAS) is designed from its core to conserve energy and reduce operating costs. Its rare earth magnet inverter scroll compressor eliminates excessive cycling, premature unit aging, inefficient hard starts, and unnecessary energy consumption. Modulating technologies allow it to deliver high efficiencies at part-load conditions.

Ventilation Direct's Rooftop Unit (RTU) features fully modulating refrigeration and optional hot gas reheat components that deliver the exact amount of air required at the desired temperature and humidity. Variable speed components allow the system to adjust heating and cooling capacity to match the required load, providing consistent temperatures and avoiding the large swings common with single-stage equipment.

This DOAS rooftop unit achieves an impressive 21.3 IEER rating (Integrated Energy Efficiency Ratio), exceeding the ASHRAE 90.1-2016 IEER standard by more than 1.5x. Designed with the future in mind, the system is positioned to exceed rising IEER requirements for years to come.

Ventilation Direct's DOAS comes standard with a 5-year parts warranty. An extended 10-year full unit warranty is included at no additional cost when units are maintained through a Ventilation Direct Preventative Maintenance subscription (terms and conditions apply). Designed with sustainability in mind, this rooftop system is built to last up to 25 years.

Quick Ship Emergency Rooftop Units


Emergency rooftop units ship in 2-3 days.

Factory provided curb adaptors are pre-gasketed and come with an integrated electrical chase as well as power and communication whips for quick and easy replacement of any RTU brand.

Contact your local sales engineer today to order!

Features & Benefits

View complete list of features
  • Mixed Air Temperature / Humidity Sensor
    • Monitors mixed air temperature / humidity
    • Available outdoor, return, mixed, discharge, and space air temperature / humidity measurements
  • Up to Three Layers of Outdoor Air Filtration
    • Standard 2" metal mesh outdoor air filters
    • Up to 4" additional filtration - MERV-8, 13, 15 & HEPA
  • Low-Leakage Outdoor Air Damper
    • Modulates to accurately meet variable outdoor air requirements
    • Integrated louver and bird screen assembly included
    • Exceeds AMCA Class 1A Leakage Standards
  • Wide Indoor Coil Design
    • Up to 10-row coil allows for optimal compressor efficiencies, full conditioning of outdoor air, and moisture control
    • Staggered coil design reduces supply air bypass
    • Chilled Water options available
  • Electronic Expansion Valve
    • Provides automated superheat control and monitoring by modulating from 0-100%
    • Precise position control prevents liquid migration during off-duty cycles
  • Fully Modulating Hot Gas Reheat Coil (Optional)
    • Provides highly accurate humidity control
    • Electronic reheat valve allows for precise capacity control
  • Stainless Steel Sloped Condensate Drain Pan
    • Removable insulated drain pan allows for easy maintenance and serviceability
    • Float switch monitors water level and protects against condensate overflow
    • Exceeds ASHRAE 62.1 Standards
  • Modular Heating
    • Natural gas indirect fired furnace with constant 80% efficiency throughout modulation (90% high efficiency option available)
    • Propane, Heat Pump, Hot water, and Electric Heat options available
  • Variable Speed Direct Drive Supply Fan
    • High efficiency Variable Frequency Drive (VFD) or Electronically Commutated Motor (ECM) options available
    • Low maintenance – no belts to adjust
  • Variable Speed Outdoor Fans with EC Motors
    • 10:1 turndown maintains peak efficiency for all outdoor air conditions
    • Aerodynamically designed bionic blades drastically reduce noise emissions
  • Double Wall, Galvanized Steel Construction
    • Insulated with 2" thick, foil-faced, R13 closed cell foam or 1" thick, R4.3 fiberglass board
    • Corrosion resistant, heavy gauge, G-90 galvanized steel
  • Removable Hinged Access Doors
    • Allow for easier maintenance and serviceability
  • Human Machine Interface (HMI)
    • User friendly interface allows for simple programming of temperature, humidity and scheduling settings
    • Access to real time temperature / humidity data and refrigerant temperature / pressure measurements
  • Integrated Controls
    • Multiple PID loops maximize energy efficiency
    • Several control offerings – full integration to BAS/DDC
    • Fully insulated controls cabinet reduces condensation, avoiding damage to controls
  • Danfoss Variable Speed Inverter Scroll Compressor
    • Modulates capacity to provide precise load matching with reduced energy consumption
    • Protective operating envelope minimizes risk of damage and premature failure
    • Variable frequency drive provides phase and over-amp protection to maximize life of unit
  • Mixed Air Temperature / Humidity Sensor

    • Monitors mixed air temperature / humidity
    • Available outdoor, return, mixed, discharge, and space air temperature / humidity measurements
  • Up to Three Layers of Outdoor Air Filtration

    • Standard 2" metal mesh outdoor air filters
    • Up to 4" additional filtration - MERV-8, 13, 15 & HEPA
  • Low-Leakage Outdoor Air Damper

    • Modulates to accurately meet variable outdoor air requirements
    • Integrated louver and bird screen assembly included
    • Exceeds AMCA Class 1A Leakage Standards
  • Wide Indoor Coil Design

    • Up to 10-row coil allows for optimal compressor efficiencies, full conditioning of outdoor air, and moisture control
    • Staggered coil design reduces supply air bypass
    • Chilled Water options available
  • Electronic Expansion Valve

    • Provides automated superheat control and monitoring by modulating from 0-100%
    • Precise position control prevents liquid migration during off-duty cycles
  • Fully Modulating Hot Gas Reheat Coil (Optional)

    • Provides highly accurate humidity control
    • Electronic reheat valve allows for precise capacity control
  • Stainless Steel Sloped Condensate Drain Pan

    • Removable insulated drain pan allows for easy maintenance and serviceability
    • Float switch monitors water level and protects against condensate overflow
    • Exceeds ASHRAE 62.1 Standards
  • Modular Heating

    • Natural gas indirect fired furnace with constant 80% efficiency throughout modulation (90% high efficiency option available)
    • Propane, Heat Pump, Hot water, and Electric Heat options available
  • Variable Speed Direct Drive Supply Fan

    • High efficiency Variable Frequency Drive (VFD) or Electronically Commutated Motor (ECM) options available
    • Low maintenance – no belts to adjust
  • Variable Speed Outdoor Fans with EC Motors

    • 10:1 turndown maintains peak efficiency for all outdoor air conditions
    • Aerodynamically designed bionic blades drastically reduce noise emissions
  • Double Wall, Galvanized Steel Construction

    • Insulated with 2" thick, foil-faced, R13 closed cell foam or 1" thick, R4.3 fiberglass board
    • Corrosion resistant, heavy gauge, G-90 galvanized steel
  • Removable Hinged Access Doors

    • Allow for easier maintenance and serviceability
  • Human Machine Interface (HMI)

    • User friendly interface allows for simple programming of temperature, humidity and scheduling settings
    • Access to real time temperature / humidity data and refrigerant temperature / pressure measurements
  • Integrated Controls

    • Multiple PID loops maximize energy efficiency
    • Several control offerings – full integration to BAS/DDC
    • Fully insulated controls cabinet reduces condensation, avoiding damage to controls
  • Danfoss Variable Speed Inverter Scroll Compressor

    • Modulates capacity to provide precise load matching with reduced energy consumption
    • Protective operating envelope minimizes risk of damage and premature failure
    • Variable frequency drive provides phase and over-amp protection to maximize life of unit

Ventilation Direct HVAC unit

The Superior Solution
for Your Space

Perfect for the following applications and many more!

Restaurants

Grocery

Schools

Senior Living /
Apartments

Grow Facilities

Laboratories /
Clean Rooms

Hotels

Warehouses

Natatoriums

System Sizing & Specifications

Enclosure Size 1 2 3 4
Nominal Tonnage 3 4 5 6 7.5 10 8 10 13 12.5 15 17.5 20 25 30 22.5 25 30 40 50 60
Min Airflow (CFM) 500 500 500 600 750 1000 800 1000 1300 1250 1500 1750 2000 2500 3000 2200 2500 3000 4000 5000 6000
Max Airflow (CFM) 1200 1600 2000 2400 3000 3400 3200 4000 4000 5000 6000 7000 8000 8000 8000 8800 10000 12000 15000 15000 15000
Indoor Coil Rows 4 4 4 4 5 6 5 7 6 6 7 7 7 7 5 5 6 6 8 8
Max Cooling Turndown Ratio 5:1 6:1 7:1 7:1 7:1 7:1 7:1 7:1 7:1 6:1 7:1 6:1 7:1 7:1 7:1 7:1 14:1 17.5:1 14:1
IEER 17.9 17.9 17.9 19.5 18.6 20.2 18.6 21.3 18.8 18.2 18.2 14.9 14.9 18.1 17.9 17.8 16.6 17.1 17.0
Max Heating Turndown Ratio* 20:1 20:1 20:1 17:1 14:1 12:1 21:1 16:1 13:1 25:1 16:1 16:1 16:1 16:1 16:1 18:1
Furnace Input Capacity (MBH) 50 - 260 50 - 440 150 - 685 200 - 1100
Electric Coil Capacity (kW) 10 - 60 15 - 60 15 - 100 30 - 240
Curb Size (L x W) 71" x 41" 75" x   49.5" 91" x 59.5" 111" x   80"
Unit Dimensions (L x W x H) 77.25" x 62" x 47.5" 81.75" x 80.75" x 60.75" 99" x 89.75" x 69" 174" x 89.75" x 94"
Approximate Weight (lbs) 1000 - 1250 1650 - 1800 2400 - 3600 4250 - 7500
*Contingent upon heat source

Certifications

Ventilation Direct's HVAC Unit is ETL-listed to the following standards: Standard for Safety Heating and Cooling Equipment ANSI/UL 1995, CSA 22.2 no. 236; American National Standard/CSA Standard for Gas Unit Heaters and Gas-Fired Duct Furnaces ANSI Z83.8-2013, CSA 2.6-2013.

Ventilation Direct's HVAC Unit has been tested in accordance with the following standards: ANSI/AHRI Standard 340/360 - 2007, ANSI/ASHRAE Standard ANSI/ASHRAE 37 2009.

Close