Walk-in environmental chamber
The Russells Technical Products W-Series is your solution for your most demanding temperature and humidity testing requirements. Available in walk-in, drive-in, or environmental room designs, the W-Series offers maximum flexibility in both chamber size and performance.
The welded, one-piece construction of the W-Series chambers allows for rapid thermal change rates, ultra-low temperature cooling, and prolonged soaks at extreme temperatures. Our modular construction WM-Series chambers provide flexibility and can also be manufactured as a dynamometer room or environmental room for long-term stability, accelerated testing, humidity, and forced long-term stability testing.
Walk-in and drive-in chambers can be configured for temperature, temperature-humidity, or altitude testing, depending on your specific needs.

- Overview
- Features
- Optional Add-Ons
- Refrigeration
- Electrical Get Quote
Solid Construction
About Solid Construction Walk-in Temperature & Humidity Chambers
Moisture buildup can be destructive to products, especially electronics, causing corrosion and oxidation. Russells’ solid construction W-Series temperature and humidity test chambers afford maximum durability and performance for your most demanding simulation test requirements.
Controlled Testing Environment Capabilities
- Steady-state or cyclical temperature and temperature/humidity tests
- Rapid-rate temperature/humidity cycling tests (>9°F/5°C/min.)
- Elevated temperature heat aging (>356°F/180°C)
- Ultra low temperature cryogenic tests to -180°C/-292°F
- Temperature range for single stage refrigeration:
- -32°C/-25°F to 180°C/356°F
- Temperature range for cascade refrigeration:
- -73°C/-100°F to 180°C/356°F
- Humidity Range:
- 10% to 95% RH within the bounds of a 185°F/85°C max. dry bulb and a 40°F/4°C min. dewpoint
- Brushed 304 series stainless steel liner, hermetically welded and dye checked
- Welded steel frame
- Durable blue enamel finishes (custom colors available)
- Capable of handling extreme temperature and humidity
- Full opening chamber door with dual gaskets (many door configurations available)
- Fiberglass insulation, .25k factor
- Removable access panels to serviceable components
- Can be equipped with battery testing safety features according to EUCAR hazard safety level
- Through‐wall access ports with foam plugs
- Viewing windows
- Refrigeration gauges
- Refrigeration sound deadening package
- Remote refrigeration systems
- LN2 boost cooling
- Humidity water demineralizer
- Dry air purge system
- Desiccant dehumidifier
- Personnel entrance airlock
- Entry ramp
- Running time meter
- Electrical disconnect switch
- Product safeguard redundant over/under temperature limit
- Circular or electronic chart recorders
- Computer communications, networking, data‐logging software
- Free standing remote instrument console
- Additional safeguards for battery testing
- Low or zero ozone depletion refrigerants
- Energy-saving refrigeration bypass capacity control
- Low stage desuperheater
- Oil pressure switches
- Compressor suction and discharge pressure switches
- Air or Water cooled condenser
- Vapor tank and condenser ASME certified
- Compressor overload protection
- High-stage compressor crankcase heater
- Compressor head fans
- Low-stage oil separator
- All piping joints silfos or silver soldered
- Stainless steel compressor condensate pans
- All wiring meets NEC/NFPA standards
- 120v control circuit transformer
- Fully enclosed electrical panel
- All circuits fused or circuit breaker protected
- Full system function switches with system status pilot lights
- Incandescent interior lighting
- All wiring numbered or color coded
- High Temperature limit safety
- Master heating circuit contactor
- Air circulator/heater interlock
- Balanced load on 3 phase power
- 3rd party NRTL/CSA/CE marking available
- Overview
- Features
- Optional Add-Ons
- Refrigeration
- Electrical Get Quote
Modular Construction
About Modular Construction Walk-In Temperature & Humidity Chambers
Russells WM-Series, walk-in environmental test chambers can provide the following combination of controlled testing environments:
- Steady state temperature and temperature/ humidity tests
- Moderate temp./humidity cycling test (< 9°F/5°C/min.)
- Moderate temperature heat aging (<185°F/85°C)
- Economical cost
- Ease of move in and install
- Wide range of size and performance
- Engineered cooling modules
- Temperature range for single stage refrigeration:
- -13°F/-25°C to 185°F/85°C
- Temperature range for cascade refrigeration:
- -100°F/-73°C to 185°F/85°C.
- Humidity Range: 10% to 95 RH within the bounds of a 158°F/70°C max. dry bulb and a 40°F/4°C min. dewpoint.
- Through‐wall access ports with foam plugs
- Viewing windows
- Refrigeration gauges
- Refrigeration sound deadening package
- Remote refrigeration systems
- LN2 boost cooling
- Humidity water demineralizer
- Dry air purge system
- Desiccant dehumidifier
- Personnel entrance airlock
- Entry ramp
- Running time meter
- Electrical disconnect switch
- Product safeguard redundant over/under temperature limit
- Circular or electronic chart recorders
- Computer communications, networking, data‐logging software
- Free standing remote instrument console
- Additional safeguards for battery testing
- Low or zero ozone depletion refrigerants
- Energy-saving refrigeration bypass capacity control
- Low stage desuperheater
- Oil pressure switches
- Compressor suction and discharge pressure switches
- Air or Water cooled condenser
- Vapor tank and condenser ASME certified
- Compressor overload protection
- High-stage compressor crankcase heater
- Compressor head fans
- Low-stage oil separator
- All piping joints silfos or silver soldered
- Stainless steel compressor condensate pans
- All wiring meets NEC/NFPA standards
- 120v control circuit transformer
- Fully enclosed electrical panel
- All circuits fused or circuit breaker protected
- Full system function switches with system status pilot lights
- Incandescent interior lighting
- All wiring numbered or color coded
- High Temperature limit safety
- Master heating circuit contactor
- Air circulator/heater interlock
- Balanced load on 3 phase power
- 3rd party NRTL/CSA/CE marking available
- Overview
- Features
- Optional Add-Ons
- Refrigeration
- Electrical Get Quote
Environmental Rooms
About Walk-In Environmental Rooms
Our environmental test rooms are climate controlled and allow testing for long-term stability, accelerated testing, humidity, and forced long-term stability. We offer the widest range and selection of customizable sizes in environmental rooms used in a variety of industries including pharmaceutical, cold storage, cultivation rooms, incubation, concrete curing, film/photography storage, and more. Our environmental rooms are compliant with NIH, USDA, and other common industry standards.
- Modular panelized construction with polyurethane foam insulation core (R-value 31+)
- Wall thickness: 4” (100mm)
- Available wall panel finishes: galvanized steel, steel with baked enamel, embossed aluminum, stainless steel
- Floor loading to 600 lbs/ft₂ (2900 kg/m₂) evenly distributed
- Available door sizes from 34” to 60” in multiple configurations
- Hardware hinges and latches are heavy duty polished castings
- Microprocessor temperature/humidity programmer controller mounted in console with acrylic cover
- Temperature range: -30˚C (-22˚F) to +60˚C (+140˚F)
- Humidity Range: 5% to 95% RH
- Through-wall access ports with foam plugs
- Viewing windows
- Refrigeration gauges
- Refrigeration sound deadening package
- Water cooled condenser
- Humidity water demineralizer
- Dry air purge system
- Desiccant dehumidifier
- Ante rooms
- Entry ramp
- Running time meter
- Electrical disconnect switch
- Floor screeds for attachment of floorless chamber to existing building floor
- Key locked instrumentation console
- Outdoor refrigeration units
- Circular or electronic chart recorders
- Low or zero ozone depletion refrigerants
- Air cooled condenser
- Compressor overload protection
- All piping joints silfos or silver soldered
- Refrigeration/condenser skid
- UL 508A compliant control panel
- All wiring meets National Electric Code (NEC) standards
- System branch circuits individually fused
- 120v control circuitry
- Full system function switches and indicator lights
- System fault status indicators
- All wiring color coded and labeled
- High temperature failsafe limit