SoliTherm® Thermoelectric Coolers from Seifert use the Peltier Effect for closed-loop cooling. The only moving parts are axial fans so there is virtually no maintenance. The Seifert Peltier thermoelectric cooling units can be mounted in nearly every position (except roof mounting) because they don't have a compressor or any moving parts aside from the fans. These thermoelectric cooling units are resistant to extreme ambient conditions and can operate effectively in dusty and oily environments and both indoor and outdoor applications. Cooling capacities range from 170 to 680 BTU/H (50W to 200W); the operating temperature range is -4°F to 149°F (20°C to 65°C). Priced from $649.00, SoliTherm thermoelectric cooling units are CE, RoHS, cURus listed and washdown friendly NEMA 4X, IP 66 rated.