About Air Conditioner Cooling Capacity
More
About Liquid Chillers
More
Thermoelectric Modules

Cool down enclosures, laser and optical equipment, and other small devices to maintain their ideal temperature. An electrical current transfers heat from one side of these modules—also known as Peltier modules—to the other. This means the side closest to your equipment stays cold.
Unlike fans and other coolers, these modules don’t have moving parts that require maintenance. They also don’t rely on moving air for cooling, so you can use them in sealed areas, like refrigerators. Compact, they fit in crowded enclosures and other tight spaces. Their flat sides mean you can attach an adhesive-mount heat sink to draw excess heat away from them.
To control these modules, connect their wire leads to a power source and thermostat or switch. You can even alter them for use in heating applications—just reverse the polarity of the DC voltage to switch their hot and cold sides.
Qmax describes the maximum thermal energy these modules can transfer. Delta Tmax refers to the maximum temperature difference between the hot and cold sides. Change the input voltage to adjust this difference in temperature.
For technical drawings and 3-D models, click on a part number.
Maximum Input | Overall | Wire Lead | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Qmax @ Th | Delta Tmax @ Th | Voltage | Current, A | Maximum Temperature, °F | Length | Width | Thickness | Material | Length | Gauge | Each | |
3.7 W @ 80° F 4.2 W @ 122° F | 154° F @ 80° F 167° F @ 122° F | 8.8V DC | 0.8 | 175° | 7/16" | 7/16" | 0.12" | Ceramic | 4" | 28 | 0000000 | 000000 |
7.1 W @ 80° F 7.9 W @ 122° F | 154° F @ 80° F 167° F @ 122° F | 2.1V DC | 6 | 175° | 5/8" | 5/8" | 0.16" | Ceramic | 4" | 20 | 0000000 | 00000 |
13 W @ 80° F 14.5 W @ 122° F | 154° F @ 80° F 167° F @ 122° F | 3.8V DC | 6 | 175° | 13/16" | 13/16" | 0.16" | Ceramic | 4" | 20 | 0000000 | 00000 |
42 W @ 80° F 46.9 W @ 122° F | 154° F @ 80° F 167° F @ 122° F | 8.6V DC | 8.5 | 175° | 1 3/16" | 1 3/16" | 0.15" | Ceramic | 4" | 20 | 0000000 | 00000 |
75 W @ 80° F 83.9 W @ 122° F | 154° F @ 80° F 167° F @ 122° F | 15.4V DC | 8.5 | 175° | 1 5/8" | 1 5/8" | 0.15" | Ceramic | 4" | 20 | 0000000 | 00000 |
200 W @ 80° F 224 W @ 122° F | 154° F @ 80° F 167° F @ 122° F | 24.1V DC | 13 | 175° | 2" | 2" | 0.13" | Ceramic | 4" | 18 | 0000000 | 00000 |
Benchtop Liquid Chillers

Send cool water to equipment right from your bench top without compromising precision. These chillers maintain constant, uniform temperatures within 0.2° F where other chillers only keep liquid cool within a few full degrees. This makes them ideal for equipment where small temperature changes could cause an issue, such as microscope cooling plates.
Fill these chillers with water or glycol solutions, and an internal pump moves the liquid through a cooling system and out to your equipment. Use the built-in keypad to manually set the temperature, or connect an external controller of your own to automate temperature changes. View the set temperature, alerts, and other information from the LED display.
Chillers rated for 500 Btu/hr. are also known as Peltier chillers. They cool liquid using electricity—no need for compressors or refrigerants. Because they don’t use a compressor, you’ll hardly hear them when they’re on. To check fluid levels at a glance, their tank inlet is semi-clear.
For technical drawings and 3-D models, click on a part number.
Overall | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cooling Capacity, Btu/hr. | Wire Connection Type | Voltage (Electrical Phase) | Current | Max. Flow Rate | Max. Pressure, psi | Temp. Control Range, °F | Ht. | Wd. | Dp. | Accuracy | Tank Cap., fl. oz. | Features | Each | |
For Closed-Loop Systems | ||||||||||||||
Thermoelectric Cooling | ||||||||||||||
500 | Wire Leads | 24V DC | 12.5A | 1 gpm @ 10 psi | 20 | 50° to 140° | 9 1/16" | 5 1/8" | 6 5/16" | ±0.2% | 4 | Semi-Clear Tank Inlet | 0000000 | 000000000 |
Rack-Mount Liquid Chillers

Save floor space—these chillers mount to standard 19" electronics racks, enclosures, and cabinets. Because they're so compact, you can even fit multiple chillers on the same rack. Where other chillers only keep liquid cool within a few full degrees, these chillers are highly precise, maintaining constant, uniform temperatures within 0.18° F. This makes them ideal for equipment where small temperature changes could cause an issue for your process. Also called Peltier chillers, they cool using only electricity, so there's no compressors or refrigerants. Without a compressor, you'll hardly hear them when they're running.
Fill these chillers with water or glycol solutions, and an internal pump moves the liquid through a cooling system and out to your equipment. There are multiple ways to control these chillers. Use the built-in keypad to manually set the temperature, or connect an external controller of your own to automate temperature changes. View the set temperature, pressure, and flow rate from the digital display. It will also display maintenance reminders and alarms.
A port on the front lets you quickly check fluid levels and fill the chiller with fluid without removing it from the rack or disconnecting it from your system.
For technical drawings and 3-D models, click on a part number.
Temp. Control | Overall | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Rack Wd. | Cooling Cap., Btu/hr. | Voltage (Electrical Phase) | Current | Max. Flow Rate | Max. Pressure, psi | Range, °F | Method | Ht. | Wd. | Dp. | Tank Cap., gal. | Each | |
For Closed-Loop Systems | |||||||||||||
Thermoelectric Cooling | |||||||||||||
19" | 600 | 100-240V AC (Single) | 2.5A | 0.8 gpm @ 5 psi | 10 | 50° to 140° | Keypad, External Controller | 7" | 19" | 13 1/2" | 0.3 | 0000000 | 000000000 |
Thermoelectric Coolers for Enclosures




Also known as Peltier coolers, these coolers use electrical current to transfer heat away from your enclosure while sealing out contaminants. They cool the enclosure to below the ambient temperature. The solid-state thermoelectric components require no maintenance and take up less space than an air conditioner or heat exchanger.
Rated IP66 and NEMA 4X, these coolers withstand weather, washdowns, and corrosive environments. They meet American and European safety standards.
Coolers without a thermostat run continuously when powered. Add a thermostat, timer, or switch to turn them on and off.
An optional extension bracket holds the cooler away from the enclosure wall for more space inside the enclosure.
Add a drain kit to remove moisture when condensation is likely, such as in humid environments and enclosures exposed to rapid temperature changes. The included hose directs water away from electrical components.
For technical drawings and 3-D models, click on a part number.
Coolers | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | For Opening | Extension Brackets | Drain Kits | |||||||||||||
Cooling Capacity, Btu/hr. | Airflow, cfm | Wattage, W | Current, A | Height | Width | Depth | Height | Width | Environment | Mounting Fasteners Included | Each | Each | Each | |||
Without Thermostat | ||||||||||||||||
12V DC—Terminal Block | ||||||||||||||||
100 | 10 | 30 | 2.9 | 4 5/16" | 6 1/8" | 5" | 3 9/16" | 4 13/16" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 0000000 | 0000000 | 000000 | 0000000 | 0000000 |
24V DC—Terminal Block | ||||||||||||||||
170 | 10 | 50 | 2.5 | 8 1/8" | 6 1/8" | 5 5/16" | 6 11/16" | 4 3/4" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 |
340 | 25 | 100 | 4.9 | 7 7/8" | 12" | 5 3/8" | 6 5/16" | 10 1/4" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 00000000 | 0000000 | 00000 | 0000000 | 000000 |
510 | 35 | 150 | 7.5 | 15 3/4" | 7 1/8" | 6 11/16" | 14 5/8" | 6 1/8" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 00000000 | 0000000 | 000000 | 0000000 | 000000 |
680 | 70 | 200 | 11.6 | 15 3/4" | 7 1/8" | 6 11/16" | 14 5/8" | 6 1/8" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 00000000 | 0000000 | 000000 | 0000000 | 000000 |
48V DC—Terminal Block | ||||||||||||||||
850 | 70 | 250 | 9.3 | 15 3/4" | 7 1/8" | 6 11/16" | 14 5/8" | 6 1/8" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 00000000 | 0000000 | 000000 | 0000000 | 000000 |
With Adjustable Thermostat (68° to 122° F) | ||||||||||||||||
120-230V AC, Single Phase, 50Hz/60Hz—Terminal Block | ||||||||||||||||
510 | 35 | 150 | 1.5 | 19 11/16" | 13" | 7 11/16" | 13 3/4" | 11 1/4" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 00000000 | 0000000 | 000000 | 0000000 | 000000 |
680 | 90 | 200 | 2 | 19 11/16" | 13" | 7 11/16" | 18 9/16" | 11 7/8" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 00000000 | 0000000 | 000000 | 0000000 | 000000 |
2,730 | 280 | 800 | 8 | 38 1/4" | 20 1/4" | 8 5/16" | 36 5/16" | 18 5/16" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 000000000 | 0000000 | 000000 | 0000000 | 000000 |
120V AC—Single Phase, 60Hz—Terminal Block | ||||||||||||||||
340 | 25 | 100 | 1 | 11" | 13 13/16" | 6 1/2" | 11" | 13 13/16" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 00000000 | 0000000 | 000000 | 0000000 | 000000 |
1,370 | 140 | 400 | 4 | 23 11/16" | 17" | 8" | 21 5/8" | 15" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 00000000 | 0000000 | 000000 | 0000000 | 000000 |
230V AC—Single Phase, 50Hz/60Hz—Terminal Block | ||||||||||||||||
1,370 | 140 | 400 | 2 | 23 11/16" | 17" | 8" | 21 5/8" | 15" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 00000000 | 0000000 | 000000 | 0000000 | 000000 |
230V AC—Single Phase, 60Hz—Terminal Block | ||||||||||||||||
340 | 25 | 100 | 0.5 | 11" | 13 13/16" | 6 1/2" | 11" | 13 13/16" | Corrosive, Outdoor, Washdown, Wet Location | Yes | 0000000 | 00000000 | 0000000 | 000000 | 0000000 | 000000 |