Vertical Stack Water Source Heat Pumps - Withair® Heating and Cooling, Air Conditioning, Heat Pump, Chiller, Industrial Process Cooling & Heating Systems, and Indoor Air Quality

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Withair® Chassis vertical stack heat pump

Replacement Chassis Unit

Capacity Range: 0.75 to 3.0 tons, 50 and 60 Hz
Refrigerant: R32, R-454B, R-410A
Compressor Type: Hermetic Rotary & Scroll

Superior comfort
Low life cycle costs
Better sustainability
Improve Indoor Air Quality
Outstanding energy efficiency
Ultra-low noise, integrated controls
Multiple options to customize the system
Microprocessor controls with optional BMS interfaces
Reliable compressor maximizes performance & reliability
Connectivity, flexibility and serviceability enabled by smart controller
Variable Speed Control and Inverter Model Compressor version for option

Overview

Excellent Performance

With superior efficiency, integrated controls, flexible sound attenuation options and easy maintenance accessibility, Withair® High Efficiency water source heat pump is the ideal comfort solution. Whether horizontal or vertical, the unit is easy to service, meets indoor air quality standards & provides excellent noise reduction.
Advanced Water Source Comfort Solution

Designed to meet the most stringent efficiency demands, the Variable Speed model is Withair's most advanced water source comfort solution. Its reliable variable speed compressors and ECM motor fans vary compressor and fan motor operation for more energy efficiency, reduced sound levels, improved reliability and superior indoor comfort. Translation: industry-leading part load efficiency and up to 40% reduction in power consumption.
Let Withair® Help You Find the Most Efficient Solution

Our water source heat pump product line is fully compatible with geothermal technology to help you maximize efficiency and sustainability while minimizing operating costs of the system. And our experts can help design, engineer, install and maintain a system uniquely tailored to meet your exacting needs.
Backed by Exceptional Quality, Reliability and Services

The outstanding quality of Withair's products is a reflection of the commitment we have to customers, a commitment that lasts the lifetime of the product. Reliable comfort, durable quality, long-term value.
Deliver High-performance Heating and Cooling for Any Building Application

Withair’s premier line of water source heat pumps deliver exceptional energy efficiency – up to 40 EER on select systems – with advanced technology to making them easy to operate using factory-installed and commissioned controls.

Models

Specifications	W01R2-026VSC	W01R2-035VSC	W01R2-045VSC	W01R2-058VSC	W01R2-072VSC	W01R2-086VSC	W01R2-105VSC
Capacity (Ton)	0.75	1.0	1.28	1.65	2.0	2.5	3.0
Compressor	Rotary	Rotary	Rotary	Rotary	Rotary	Rotary	Scroll
Evaporator	Co-axial	Co-axial	Co-axial	Co-axial	Co-axial	Co-axial	Co-axial
Condenser	High Efficiency	High Efficiency	High Efficiency	High Efficiency	High Efficiency	High Efficiency	High Efficiency
Voltage	230, 208, 115	230, 208, 115	230, 208, 115	230, 208, 115	230, 208, 115	230, 208, 115	380/415, 230
Frequency	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60	50 and 60
Refrigerant	R-410A, R-454B, R32	R-410A, R-454B, R32	R-410A, R-454B, R32	R-410A, R-454B, R32	R-410A, R-454B, R32	R-410A, R-454B, R32	R-410A, R-454B, R32
ECM fan	Option	Option	Option	Option	Option	Option	Option
Inverter Compressor	Option	Option	Option	Option	Option	Option	Option

Factory Installed Options

Unit Options

ECM Fan
Inverter Compressor
Wide Ambient Operation
Frost Prevention Kit
Electric Heaters
Expansion Tank
Vibration Isolators
Sound Attenuation
Suction Shutoff Valves
Liquid Line Solenoid Valve
Evaporator Inlet Strainer
Double Evaporator Insulation
Complete Coat Condenser Coil
Corrosion Protected Condenser Coil
Metal Mesh for Condenser Coil Protection
Partial Heat Recovery or Total Heat Recovery
Integrated Pump Packages
Condensate Overflow Switch
High Efficiency Inverter Compressor
High Efficiency EC Fan
High Fault Short Circuit Current Rating
Microchannel Condenser Coil
Stainless Steel Heat Exchanger
Stainless Steel Frame
Flanged Water Connection Kit

Controls Options

Modbus, BACnet Communications Interface
Withair® Wireless Components
Door Mounted User Display
Remote User Interface
Fault Detection & Diagnostics
Flow Switch
Remote Input
Remote Output

Electrical Options

Quick Start and Fast Loading
Circuit Breaker
High Short Circuit Current Rating
Ground Fault Protection
115V Convenience Outlet
Power Connections
Multi-Point Power with Disconnect Switch

Resources

Name	Size	Download
Withair® Packaged Rooftop & Split DX Systems-Line-Card.pdf	550KB	Download
Withair® Solutions Offering-Line-Card.pdf	4.00MB	Download
Withair® HVACR SYSTEM SOLUTIONS OFFERING_2025 Version.pdf	3.54MB	Download
Withair® Water-Cooled-Chillers-Line-Card.pdf	483KB	Download
Withair® Air-Cooled-Chillers-Line-Card.pdf	679KB	Download
Withair® Air-Cooled-Heat Pumps-Line-Card.pdf	721KB	Download
Withair® Ground(Water)-Source-Heat Pumps-Line-Card.pdf	502KB	Download
Withair® Industrial Process Cooling & Heating Systems-Line-Card.pdf	506KB	Download
Withair® Air-Side-Products-Line-Card.pdf	1.69MB	Download