Enclosure Thermal Management

The internal temperature of an electrical enclosure must be closely monitored and controlled in order to protect sensitive equipment housed inside. The changing temperature outside of an enclosure can require heating or cooling applications for the inside of an enclosure to prevent components from freezing or overheating and to prevent condensation from forming. 

Enclosure air conditioners use chemical refrigerants, compressors, evaporators, condensers and fans to cool the inside of an enclosure. They create a closed loop system for cooling, which circulates the air inside the enclosure without mixing with outside air. Thermoelectric coolers have a cold side that is placed inside the enclosure and a hot side placed outside the enclosure with fans that circulate the cool air throughout the enclosure.

Enclosure fans draw filtered, ambient air into the enclosure at the same time as internal, heated air is blown out as exhaust. An exhaust filter can be used with a filter fan to aid in pressurization of the enclosure, reducing the chance of unfiltered air entering back into the enclosure. A filter fan should be located in the bottom third of the enclosure and the filtered exhaust grill placed as high as possible on the opposite side of the fan.

Enclosure heaters are necessary when an outdoor enclosure is located where temperatures dip well below freezing and heating is required to keep the internal temperature of the enclosure within an optimal operating range for the electrical components. Heaters also help to reduce condensation, with relative humidity inside the enclosure ideally kept below 65 percent. A heater should be placed near the bottom of the enclosure to allow natural convection of heat distribution, but some larger enclosures could require a fan to distribute heat. 

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$1515.80
Thermal filter boxes are high volume air movers that require minimal enclosure space. Fans can be mounted internally or externally, and used for either intake or exhaust. Inlet Guard, Outlet Guard, Power Cord, 5-15 plug available on catalog numbers ending with “M” only. Permanently lubricated ball bearing motors.
$1348.10
Thermal filter boxes are high volume air movers that require minimal enclosure space. Fans can be mounted internally or externally, and used for either intake or exhaust. Inlet Guard, Outlet Guard, Power Cord, 5-15 plug available on catalog numbers ending with “M” only. Permanently lubricated ball bearing motors.
$1160.90
Thermal filter boxes are high volume air movers that require minimal enclosure space. Fans can be mounted internally or externally, and used for either intake or exhaust. Inlet Guard, Outlet Guard, Power Cord, 5-15 plug available on catalog numbers ending with “M” only. Permanently lubricated ball bearing motors.
$1112.80
Thermal filter boxes are high volume air movers that require minimal enclosure space. Fans can be mounted internally or externally, and used for either intake or exhaust. Inlet Guard, Outlet Guard, Power Cord, 5-15 plug available on catalog numbers ending with “M” only. Permanently lubricated ball bearing motors.
$1037.40
Thermal filter boxes are high volume air movers that require minimal enclosure space. Fans can be mounted internally or externally, and used for either intake or exhaust. Inlet Guard, Outlet Guard, Power Cord, 5-15 plug available on catalog numbers ending with “M” only. Permanently lubricated ball bearing motors.
$995.80
Thermal filter boxes are high volume air movers that require minimal enclosure space. Fans can be mounted internally or externally, and used for either intake or exhaust. Inlet Guard, Outlet Guard, Power Cord, 5-15 plug available on catalog numbers ending with “M” only. Permanently lubricated ball bearing motors.
$465.40
Hoffman 89139592R HR16 Replacement Filters
$1383.20
HR Top-Mount Filter Fans Bolt in place to ensure a tight seal. Terminal block connections.
$1383.20
HR Top-Mount Filter Fans Bolt in place to ensure a tight seal. Terminal block connections.
$1289.60
HR Top-Mount Filter Fans Bolt in place to ensure a tight seal. Terminal block connections.
$1289.60
HR Top-Mount Filter Fans Bolt in place to ensure a tight seal. Terminal block connections.
$1289.60
HR Top-Mount Filter Fans Bolt in place to ensure a tight seal. Terminal block connections.
$1289.60
HR Top-Mount Filter Fans Bolt in place to ensure a tight seal. Terminal block connections.
$1383.20
HR Top-Mount Filter Fans Bolt in place to ensure a tight seal. Terminal block connections.
$1241.50
Filter Fan Package Side-Mount Filter Fan Click-Fit design quickly installs into enclosure wall; no tools or screws required. Opens with the flick of a finger for easy filter replacement. Reverse airflow option on HF13 models available to push/pull air through higher static pressure. Terminal block connections, Optional thermostat available to save energy and extend service life.
$1241.50
Filter Fan Package Side-Mount Filter Fan Click-Fit design quickly installs into enclosure wall; no tools or screws required. Opens with the flick of a finger for easy filter replacement. Reverse airflow option on HF13 models available to push/pull air through higher static pressure. Terminal block connections, Optional thermostat available to save energy and extend service life.
$1137.50
Filter Fan Package Side-Mount Filter Fan Click-Fit design quickly installs into enclosure wall; no tools or screws required. Opens with the flick of a finger for easy filter replacement. Reverse airflow option on HF13 models available to push/pull air through higher static pressure. Terminal block connections, Optional thermostat available to save energy and extend service life.
$1137.50
Filter Fan Package Side-Mount Filter Fan Click-Fit design quickly installs into enclosure wall; no tools or screws required. Opens with the flick of a finger for easy filter replacement. Reverse airflow option on HF13 models available to push/pull air through higher static pressure. Terminal block connections, Optional thermostat available to save energy and extend service life.
$822.90
Filter Fan Package Side-Mount Filter Fan Click-Fit design quickly installs into enclosure wall; no tools or screws required. Opens with the flick of a finger for easy filter replacement. Reverse airflow option on HF13 models available to push/pull air through higher static pressure. Terminal block connections, Optional thermostat available to save energy and extend service life.
$471.90
Filter Fan Package Side-Mount Filter Fan Click-Fit design quickly installs into enclosure wall; no tools or screws required. Opens with the flick of a finger for easy filter replacement. Reverse airflow option on HF13 models available to push/pull air through higher static pressure. Terminal block connections, Optional thermostat available to save energy and extend service life.
$822.90
Filter Fan Package Side-Mount Filter Fan Click-Fit design quickly installs into enclosure wall; no tools or screws required. Opens with the flick of a finger for easy filter replacement. Reverse airflow option on HF13 models available to push/pull air through higher static pressure. Terminal block connections, Optional thermostat available to save energy and extend service life.
$822.90
Filter Fan Package Side-Mount Filter Fan Click-Fit design quickly installs into enclosure wall; no tools or screws required. Opens with the flick of a finger for easy filter replacement. Reverse airflow option on HF13 models available to push/pull air through higher static pressure. Terminal block connections, Optional thermostat available to save energy and extend service life.
$1103.20
Fan Shroud Kit for protection of outdoor enclosure openings from rain, sleet and snow. Two fan shrouds per package, Perforated ventilation screen, and Pressure-sensitive adhesive-backed gasket and mounting hardware. 16 gauge Type 304 stainless steel smooth #4 brushed finish.
$886.20
Fan Shroud Kit for protection of outdoor enclosure openings from rain, sleet and snow. Two fan shrouds per package, Perforated ventilation screen, and Pressure-sensitive adhesive-backed gasket and mounting hardware. 16 gauge Type 304 stainless steel smooth #4 brushed finish.
$666.40
Fan Shroud Kit for protection of outdoor enclosure openings from rain, sleet and snow. Two fan shrouds per package, Perforated ventilation screen, and Pressure-sensitive adhesive-backed gasket and mounting hardware. 16 gauge Type 304 stainless steel smooth #4 brushed finish.
$446.60
Fan Shroud Kit for protection of outdoor enclosure openings from rain, sleet and snow. Two fan shrouds per package, Perforated ventilation screen, and Pressure-sensitive adhesive-backed gasket and mounting hardware. 16 gauge mild steel with ANSI 61 gray polyester powder coating.
$393.40
Fan Shroud Kit for protection of outdoor enclosure openings from rain, sleet and snow. Two fan shrouds per package, Perforated ventilation screen, and Pressure-sensitive adhesive-backed gasket and mounting hardware. 16 gauge mild steel with ANSI 61 gray polyester powder coating.
$334.60
Fan Shroud Kit for protection of outdoor enclosure openings from rain, sleet and snow. Two fan shrouds per package, Perforated ventilation screen, and Pressure-sensitive adhesive-backed gasket and mounting hardware. 16 gauge mild steel with ANSI 61 gray polyester powder coating.
$34.58
Hoffman 89134427R Replacement IP54 Filter NEMA 12 for HF13 Models Includes 6 filters.
$490.00
Hoffman HH13SS04001 Filter Fan Shroud for HF13,ST13 and TFP10 filter fans and HG13 and TFP10 exhaust grills. Stainless Steel Shroud protects filter fan and exhaust grill 17.62" x 16.0" x 4.75" (HxWxD)
$368.20
Hoffman HH13GS61001 Filter Fan Shroud for HF13,ST13 and TFP10 filter fans and HG13 and TFP10 exhaust grills. Gray Galvanized metal Shroud protects filter fan and exhaust grill 17.62" x 16.0" x 4.75" (HxWxD)
$368.20
Hoffman HH13GS35001 Filter Fan Shroud for HF13,ST13 and TFP10 filter fans and HG13 and TFP10 exhaust grills. Light Gray Galvanized metal Shroud protects filter fan and exhaust grill 17.62" x 16.0" x 4.75" (HxWxD)
$418.60
Hoffman HH10SS04001 Filter Fan Shroud for HF10,ST10 and TFP6 filter fans and HG10 and TFP6 exhaust grills. Stainless Steel Shroud protects filter fan and exhaust grill 14.74" x 12.0" x 3.5" (HxWxD)
$302.40
Hoffman HH10GS61001 Filter Fan Shroud for HF10,ST10 and TFP6 filter fans and HG10 and TFP6 exhaust grills. Gray Galvanized metal Shroud protects filter fan and exhaust grill 14.74" x 12.0" x 3.5" (HxWxD)
$302.40
Hoffman HH10GS35001 Filter Fan Shroud for HF10,ST10 and TFP6 filter fans and HG10 and TFP6 exhaust grills. Light Gray Galvanized metal Shroud protects filter fan and exhaust grill 14.74" x 12.0" x 3.5" (HxWxD)
$343.00
Hoffman HH05SS04001 Filter Fan Shroud for HF04 and SF05 filter fans and HG04 and HG05 exhaust grills. Stainless Steel Shroud protects filter fan and exhaust grill 10.25" x 8.0" x 2.25" (HxWxD)
$261.80
Hoffman HH05GS61001 Filter Fan Shroud for HF04 and SF05 filter fans and HG04 and HG05 exhaust grills. Gray Galvanized metal Shroud protects filter fan and exhaust grill 10.25" x 8.0" x 2.25" (HxWxD)
$261.80
Hoffman HH05GS35001 Filter Fan Shroud for HF04 and SF05 filter fans and HG04 and HG05 exhaust grills. Light Gray Galvanized metal Shroud protects filter fan and exhaust grill 10.25" x 8.0" x 2.25" (HxWxD)
$211.90
Hoffman HG1300503 IP55 13" Black Exhaust Grille 9011 Fits Fan Package All HF13 IP55 RAL 9011 Models
$211.90
Hoffman HG1300504 IP55 13" Light Gray Exhaust Grille 7035 Fits Fan Package All HF13 IP55 RAL 7035 Models
$137.80
Hoffman HG1300403 IP 54 13" Black Exhaust Grille 9011 Fits Fan Package All HF13 IP54 RAL 9011 Models
$137.80
Hoffman HG1300404 IP 54 13" Light Gray Exhaust Grille 7035 Fits Fan Package All HF13 IP54 RAL 7035 Models
$185.90
Hoffman HG1000503 IP55 10" Black Exhaust Grille 9011 Fits Fan Package All HF10 IP55 RAL 9011 Models
$185.90
Hoffman HG1000504 IP55 10" Light Gray Exhaust Grille 7035 Fits Fan Package All HF10 IP55 RAL 7035 Models
$116.74
Hoffman HG1000403 IP 54 10" Black Exhaust Grille 9011 Fits Fan Package All HF10 IP54 RAL 9011 Models
$116.74
Hoffman HG1000404 IP55 9" Black Exhaust Grille 9011 Fits Fan Package All HF10 IP54 RAL 7035 Models
$161.20
Hoffman HG0900503 IP55 9" Black Exhaust Grille 9011 Fits Fan Package All HF09 IP55 RAL 9011 Models
$161.20
Hoffman HG0900504 IP55 9" Light Gray Exhaust Grille 7035 Fits Fan Package All HF09 IP55 RAL 7035 Models