Product Categories
PWS 3000 SERIES
PWS air to water heat exchanger
Air / Water Heat Exchangers

Air To Water Heat Exchangers

Efficient Cooling when Ambient Conditions are at their Worst

The use of Pfannenberg Air/Water Heat Exchangers is particularly suitable where ambient temperatures are high or the atmosphere proves to be particularly oily or aggressive – washdown areas of the plant or areas with high amounts of particulate. Ideal areas of use for air/water heat exchangers are wherever machines or production processes are cooled by tempered water and water is thus already provided.

The sealed cabinet provides contaminant-free component cooling without adding heat to the local environment.

For applications which require local enclosure cooling using a remotely located source of refrigeration, PWS Series Air/Water Heat Exchangers provide the perfect, energy efficient solution.

Pfannenberg Air to Water Heat Exchangers specifications:

  • UL  Listed, category ACVS, UL file #SA10300, CE approved for European use
  • Maintains a UL Tested NEMA Type 12/3R/4 seal against enclosure (NEMA Type 4X with stainless option)
  • Easy to mount seal, no elaborate reworking of the mounting cut-out
  • Integrated thermostat and solenoid valve for temperature control
  • Integrated temperature monitoring with alarm contact
  • Casing available with powder coat (RAL 7035) or stainless steel (with #3 polish)

Why Choose Pfannenberg PWS Air/Water Heat Exchangers?

Maintenance-Free Design

Easy to service and maintain, PWS Air/Water Heat Exchangers can be installed internally or externally.

Energy Efficient

A supplied water source is used to remove the heat from the enclosure which is the most efficient mean of removing process heat.

Adapted to Extreme Conditions

Particularly suitable where ambient temperatures are high or the atmosphere proves to be particularly oily or aggressive.

High Cooling Capacity

With cooling capacities ranging from 2,218 BTU (650 W) to 34,121 BTU (10,000 W) these units are specifically engineered to allow safe, efficient use of liquid coolant to cool enclosure electronics.

PWS Air to Water Heat Exchangers Models

PWS 3000 SERIES


2218 – 34121 Btu/h
Wide range of cooling capacity. Ideal for harsh ambient conditions.

PWS 7000 SERIES


7102 – 7332 Btu/h
Pfannenberg’s legacy models. Installation is service friendly requiring no elaborate reworking of the mounting cutout.

Efficient Cooling when Ambient Conditions are at their Worst

The use of Pfannenberg Air/Water Heat Exchangers is particularly suitable where ambient temperatures are high or the atmosphere proves to be particularly oily or aggressive. Maintenance-free operation and extremely low noise emission. Ideal application areas wherever machines or production processes are cooled by tempered water and water is thus already provided.

Rugged Design

Powder coated steel or stainless steel cover designed for manufacturing environments. Easily painted to match enclosure or machine.

Condensation Management

Physical barriers allow for condensation to be collected and drained from the system with zero intrusion into the cabinet.

Closed Loop Design

Designed to isolate the external ambient air from the internal air circuit eliminating the risk of contaminants entering the cabinet.

Push to Connect Fittings

Hydronic connectors that supports quick connection to 1/2 inch O.D. hose or 1/2 inch I.D. hose with included adapter. Unlike other units that have rigid permanent connections.

Optimized Internal Design

Smart engineered solution, easy to service and maintain.

Intelligent Control of Water Flow

The adjustable electronic thermostat permits precise control of the electrical enclosure temperature by regulating the coolant flow by activating a solenoid valve. This regulates the coolant flow to minimize coolant waste and increase energy-efficiency.

Washdown Roof Design

Metal covers are designed with a sloped top which sheds water away from the electrical enclosure as well as eliminates potential water pooling, corrosion and ice buildup.

Long Airflow Path

Heat exchangers are designed to draw hot air from the top of the enclosure and deliver cool air below the components.