Fig 1. SANDA Peltier Air Cooler installed on electrical enclosure
Selecting the right Peltier Air Cooler for your enclosure is critical to maintaining optimal operating temperatures for sensitive electronics. A properly sized solid-state air conditioner prevents overheating, extends equipment life, and reduces unplanned downtime. This guide explains how to calculate enclosure heat load, select the correct supply voltage, match the right SANDA model, and verify installation dimensions.
1. How a Peltier Air Cooler Works
A Peltier Air Cooler (also called a thermoelectric or solid-state air conditioner) cools an enclosure without compressors, refrigerants, or filters. It uses the Peltier effect: when DC current passes through the module, one side absorbs heat and the other side dissipates it. The result is reliable, low-maintenance cooling ideal for electrical cabinets, telecom enclosures, and instrument housings.
Fig 2. SD-Series Peltier Air Cooler — aluminum alloy, solid-state design
2. Calculate Your Enclosure Heat Load
Before selecting a model, calculate the total heat load (W) inside the enclosure:
· Internal electronic equipment wattage (power supplies, drives, PLCs)
· Heat conducted through the enclosure walls from the ambient environment
· Solar load (if installed outdoors)
· Other heat sources (batteries, transformers, etc.)
Selection rule: Cooling capacity ≥ Total heat load × 1.2 (safety factor)
3. Choose the Correct Supply Voltage
SANDA Peltier Air Cooler models are available in three DC voltage ranges:
DC Voltage | Typical Application | Available Models |
12V DC | Vehicle-mounted, compact enclosures | SD-050-12, SD-060-12, SD-080-12, SD-100-12 |
24V DC | Industrial control cabinets | SD-050-24, SD-060-24, SD-080-24, SD-100-24 |
48V DC | Telecom cabinets, data centers | SD-060-48, SD-080-48, SD-100-48, SD-300-48 |
4. Match the Model to Your Cooling Capacity
Once you know the required cooling capacity, select the appropriate SANDA model:
Heat Load (W) | Recommended Model | Cooling Capacity | Weight |
≤ 50 | SD-050-12 / SD-050-24 | 50W | 1.2 kg |
50–60 | SD-060-12/24/48 | 60W | 1.85 kg |
60–80 | SD-080-12/24/48 | 80W | 4.2 kg |
80–100 | SD-100-12/24/48 | 100W | 4.2 kg |
200–300 | SD-300-48 | 300W | 7.7 kg |
Fig 3. Full Peltier Air Cooler product family — SD-050 to SD-300
5. Confirm Installation Dimensions
All SANDA Peltier Air Cooler units are designed for embedded (flush) mounting on the enclosure wall. Before ordering, confirm:
· Cutout dimensions on the enclosure panel
· Clearance space inside the cabinet for air circulation
· Cable entry location and gland size
· Enclosure wall thickness compatibility
Fig 4. Embedded mounting — Peltier Air Cooler flush-mounted on enclosure
6. Technical Specifications
All SANDA Peltier Air Cooler units share these core specifications:
Parameter | Specification |
Construction | Corrosion-resistant aluminum alloy |
Mounting type | Embedded (flush) mount |
Compressor | None (solid-state Peltier modules) |
Refrigerant | None (environment-friendly) |
Filters | None (maintenance-free except fans) |
Indoor / outdoor | Both supported |
Fig 5. Technical specification table — SANDA Peltier Air Cooler series
7. Peltier Air Cooler vs. TEC Air Conditioner
SANDA offers two solid-state cooling product lines. Choose based on your environment:
Need | Choose | Key Difference |
Cooling only, indoor, aluminum | Peltier Air Cooler (SD series) | Lower cost, lightweight aluminum |
Cooling+heating, outdoor/harsh | TEC Air Conditioner (SDC2 series) | IP55, heating mode, stainless steel，Integrated controller |
Frequently Asked Questions
Q: Can I use a Peltier Air Cooler outdoors?
Yes. SANDA units feature corrosion-resistant aluminum alloy and are suitable for both indoor and outdoor use. For coastal or highly corrosive environments, consider the SDC2 (TEC) series with stainless steel housing and IP55 rating.
Q: Do I need to add refrigerant?
No. Peltier Air Coolers use solid-state thermoelectric modules and require no refrigerant, compressor, or cooling filters. Maintenance is limited to periodic fan cleaning.
Q: What is the warranty?
SANDA standard products include a 12-month warranty from the shipment date. Quality-related failures are covered for free repair or replacement.
Q: Can I get a customized voltage or form factor?
Yes. SANDA provides OEM/ODM services, including parameter customization, appearance customization, and function expansion. Contact our sales team for feasibility evaluation.
Need help selecting the right Peltier Air Cooler for your enclosure?
Contact SANDA: info@sandacool.com | (+86) 153 0748 4596
Website: www.peltieraircooler.com