Micro DC Aircon

RIGID Micro DC Aircon is a compact vapor-compression air conditioning system designed for battery-powered equipment, electronics enclosures, telecom cabinets, EV systems, drone stations, mobile equipment, medical devices and other confined spaces.

Unlike an AC air conditioner powered through an inverter, the Micro DC Aircon operates directly from a 12V, 24V or 48V DC power source. Depending on the model, available cooling capacity ranges from 450W to 900W, with airflow from 28.3 CFM to 87 CFM.

The system integrates a miniature variable-speed BLDC compressor, condenser, evaporator, blower/fans, refrigerant circuit and compressor control electronics into a compact refrigeration package.

For equipment powered by a DC battery or DC bus, a direct-DC vapor-compression air conditioner eliminates the need to convert DC battery power to AC before operating the refrigeration compressor. RIGID Micro DC Aircon operates directly from:

• 12V DC
• 24V DC
• 48V DC

The product family provides approximately 450W to 900W of cooling capacity, depending on model.

For applications requiring the smallest package, the DV1910E-AC, DV1920E-AC, DV1930E-AC and DV3220E-AC use a 350 × 260 × 180 mm enclosure and provide 28.3 CFM evaporator airflow.

For higher heat loads, the DV3820E-AC and DV3830E-AC provide up to 900W cooling capacity with 87 CFM airflow.

This architecture is suitable for battery systems, electronics, telecom equipment, mobile platforms and other installations where DC power, size and weight are important design constraints.

It uses ~/< 180w under normal running conditions. Max power is ~/<550w.

• For micro a/c models DV1910E-AC / DV1920E-AC / DV1930E-AC / DV3220E-AC: The airflow rate at the cold air outlet: 28.3CFM.
• For powerful a/c DV3820E-AC (24V): The cold air outlet: 87.0CFM.

It has nominal capacity of 450W~550W (1,876Btu) under normal running conditions.

Firstly we need to specify the battery. The 12V aircon nominal 1-8 amps. If we assume about 8 amps continuous. A car battery is usually 35 amp-hours. A prismatic lithium battery from battle born or a 190 amp hour battery from EVE would be a longer run time, just divide the battery by the 8 amps. For example, 100/8=12.5hrs (100 amp hour battery divide by 8).

Technically, it is easy to find 200-300 amp hour batteries and 400-800 or more watts of solar panels, it runs this micro dc air conditioner unit all day.

There are 4 ways to adjust compressor speeds.

1. PWM Speed Control
2. Potentiometer speed control(Included)
3. 0-5V Speed control
4. TTL communication port

If you want this Micro DC Aircon for your trailer or RV SMALL room cooling, you have to make sure more capacity battery. Plus, you'll need to get an inverter at least 1000 watts in case you want to run more things later. Furthermore, if possible, it is cool to add solar panels as power supply backup, that you can run your air conditioner all day long.

RIGID has another design dc aircon with both Heating and Cooling, they are:

• DV1910E-AC/H (12V)
• DV1920E-AC/H (24V)
• DV1930E-AC/H (48V)
• DV3220E-AC/H (24V)

In heating mode, it’s an electric resistance heater, not a reversible heat pump that does both heating and cooling.

The Micro dc aircon units also work as dehumidifiers and have an internal tray that collects condensate water, as well as a drainage pipe. Also, it still requires ventilation, but usually, only the heat part (condenser) needs to exhaust.

Yes, this micro dc aircon can work in a crane cab if you can provide enough DC power supply. Plus, we also recommend you a better fit - Portable Air Conditioner. It is ready-to-go and plug-and-play, including a user interface and remote controller. Product details: https://www.rigidhvac.com/portable-air-conditioner

All our products are made in China and delivered from China. For online orders, we choose DHL/UPS/FedEx Express door-to-door shipping.

It usually takes 9 ~ 15 days to reach your place. Online-store: https://www.rigidhvac.com/online-order

We also supply ducting hoses, 1-meter length. You can place an order directly from our online store: https://www.rigidhvac.com/store/products/rigidhvac-micro-air-conditioner-dv1910e-ac-12v-pro

There are two product models: 1) 12V Portable Air Conditioner (plug and play); 2) 12V Micro DC Aircon .

1. Portable Air Conditioner: USD1400
2. Micro DC Aircon: USD580

It is a compact portable battery-driven a/c, only enough for a driver cab or small space of no more than 2 cubic meters.

It is about 1,800Btu of output, and input power is about 300~600Btu.

Thermostat is gonna act as a switch. So you connect it to the two white wires and thermostat is gonna have an external source of power and is gonna turn on and off your ac!

Maximum 5℃/41℉, or 15℃ lower than ambient temp.

There are two models (450W and 550W) You can get different cooling capacities by adjusting compressor speeds.

There are two models (450W and 550W) You can get different cooling capacities by adjusting compressor speeds.

Pirce is USD580 ~ USD650 for different models, feel free to purchase online, https://www.rigidhvac.com/online-order

The temperature Delta is 15℃ (inlet and outlet). The maximum outlet temperature can reach 5℃ (41℉).

The temperature Delta is 15℃ (inlet and outlet). The maximum outlet temperature can reach 5℃ (41℉).

A thermostat is gonna act as a switch. So you connect it to the two white wires and the thermostat is gonna have an extern source of power and is gonna turn on and off your ac!

Yes — your cabinet or enclosure must have a heat exhaust hole. Use flexible tubes to direct hot air out. Or install the A/C outside to make sure better ventilation.

All wiring comes pre-prepared. You only need to connect:

1. DC power supply
2. Driver board to compressor
3. On/Off switch

Yes — RIGID ships all DC Aircon units fully charged with refrigerant and oil.

A drone station or battery enclosure requires active cooling when internal heat generation and solar/ambient heat gain exceed what passive ventilation can remove.

RIGID Micro DC Aircon uses a closed vapor-compression refrigeration circuit to remove heat from recirculating enclosure air.

For moderate thermal loads, the DV3220E-AC provides:

• Cooling capacity: 550W / 1,876 BTU/h
• Power supply: 24V DC
• Airflow: 28.3 CFM
• Dimensions: 350 × 260 × 180 mm
• Weight: 5.3 kg
• Refrigerant: R134a
• Working current: 1–10.3A
• Maximum current: 12.5A

The variable-speed BLDC compressor allows cooling output to be adjusted according to the thermal demand rather than relying only on fixed-speed ON/OFF compressor operation.

For a drone dock or battery enclosure, the required model should be selected from the actual heat load, maximum ambient temperature, enclosure insulation, solar load, target internal temperature and available battery power.

The RIGID Micro DC Aircon range provides cooling capacities from 450W to a maximum of 900W.

• DV1910E-AC, 12V, 450W / 1,535 BTU/h, 28.3 CFM, 350 × 260 × 180 mm;
• DV1920E-AC, 24V, 450W / 1,535 BTU/h, 28.3 CFM, 350 × 260 × 180 mm;
• DV1930E-AC, 48V, 450W / 1,535 BTU/h, 28.3 CFM, 350 × 260 × 180 mm;
• DV3220E-AC, 24V, 550W / 1,876 BTU/h, 28.3 CFM, 350 × 260 × 180 mm;

More Powerful series:

• DV2820E-AC, 24V, Up to 700W / 2,388 BTU/h, 28.3 CFM, 350 × 260 × 180 mm;
• DV2820E-AC-T, 24V, Up to 700W / 2,388 BTU/h, 28.3 CFM, 350 × 260 × 180 mm;
• DV3820E-AC, 24V, Up to 900W / 3,071 BTU/h, 87 CFM, 500 × 350 × 230 mm;
• DV3830E-AC, 48V, Up to 900W / 3,071 BTU/h, 87 CFM, 500 × 350 × 230 mm.

Cooling capacity should not be selected from enclosure volume alone. Engineers should calculate the total thermal load and account for ambient conditions before choosing a model.

Model selection can begin with the available DC bus voltage and required cooling capacity.

For a 12V system, the DV1910E-AC provides 450W cooling capacity, 28.3 CFM airflow and a 350 × 260 × 180 mm package.

For a 24V system, available options include:

• DV1920E-AC — 450W
• DV3220E-AC — 550W
• DV2820E-AC / AC-T — up to 700W
• DV3820E-AC — up to 900W

For a 48V system, the DV1930E-AC provides 450W cooling capacity, while the DV3830E-AC provides up to 900W.

Final selection should also consider heat load, airflow requirement, ambient temperature, refrigerant, allowable current, installation space and operating duty cycle.

Use an all-DC vapor-compression air conditioner matched directly to the equipment's DC power bus.

RIGID Micro DC Aircon uses a miniature BLDC rotary compressor and operates from 12V, 24V or 48V DC, depending on model. This allows the refrigeration system to run from a battery or DC power supply without adding a separate DC-to-AC inverter solely for the compressor.

For example, the DV3830E-AC combines:

• 48V DC input
• Up to 900W cooling capacity
• 87 CFM evaporator airflow
• 500 × 350 × 230 mm dimensions
• 11 kg system weight
• Twin-cylinder BLDC compressor

This makes direct-DC cooling practical for telecom cabinets, communications equipment, electronics enclosures, battery-backed systems and off-grid installations.

Several RIGID Micro DC Aircon models use a package measuring only 350 × 260 × 180 mm.

These include:

• DV1910E-AC — 12V, 450W, 4.5 kg
• DV1920E-AC — 24V, 450W, 5 kg
• DV1930E-AC — 48V, 450W, 5 kg
• DV3220E-AC — 24V, 550W, 5.3 kg
• DV2820E-AC / AC-T — 24V, up to 700W, 6 kg

The 450W models provide 28.3 CFM airflow while keeping the complete refrigeration package compact enough for integration into mobile equipment and small enclosures.

For applications requiring higher airflow and up to 900W cooling capacity, the larger DV3820E-AC and DV3830E-AC measure 500 × 350 × 230 mm.

Yes. The DV3820E-AC is the 24V high-capacity model and the DV3830E-AC is the 48V version.

Both provide:

• Maximum cooling capacity: 900W / approximately 3,071 BTU/h
• Evaporator airflow: 87 CFM
• Dimensions: 500 × 350 × 230 mm
• Weight: 11 kg
• Twin-cylinder BLDC compressor
• R134a or R290 refrigerant options

These models are intended for applications where the thermal load exceeds the capability of the smaller 450–700W systems but conventional air-conditioning equipment is too large for the available installation envelope.

Actual cooling performance depends on operating conditions, including ambient temperature and evaporator conditions.

RIGID Micro DC Aircon models are available with R134a and, on selected configurations, R290.

The standard compact DV1910E-AC, DV1920E-AC, DV1930E-AC and DV3220E-AC models listed here use R134a.

The DV2820E-AC-T uses R290.

The higher-capacity DV3820E-AC and DV3830E-AC platforms are available in R134a or R290 configurations.

R290 is a hydrocarbon refrigerant and is flammable. System design, refrigerant charge, ventilation, electrical components, installation and applicable safety requirements therefore need to be evaluated for the intended application and market.

Refrigerant selection should be confirmed during system design rather than treated as a direct field substitution.

RIGID Micro DC Aircon uses a variable-speed miniature BLDC compressor.

Instead of operating only at a single compressor speed, compressor output can be adjusted according to cooling demand. This gives the system integrator greater control over refrigeration capacity and power consumption.

• Variable-speed operation is useful when:
• Electronic heat load changes during operation
• Battery power is limited
• Stable enclosure temperature is required
• Full cooling capacity is not continuously necessary
• Noise and energy consumption need to be reduced during low-load operation

RIGID also provides compressor drive electronics for system integration.

For OEM applications, control strategy should be developed around the customer's temperature sensors, thermal load, required setpoint, compressor operating limits and overall equipment control logic.

Yes. RIGID supports OEM and application-specific DC air-conditioning development when a standard Micro DC Aircon does not meet the mechanical, thermal or electrical requirements of the project.

Typical engineering inputs include:

• Required cooling capacity in watts
• Maximum ambient temperature
• Target air or enclosure temperature
• Internal heat generation
• Available 12V, 24V or 48V DC power
• Maximum allowable current
• Required airflow
• Available installation envelope
• Weight limitation
• Refrigerant preference
• Compressor orientation
• Air inlet and outlet arrangement
• Condenser airflow conditions
• Noise requirement
• Communication and control requirements
• Expected annual production volume

RIGID can work with the customer's engineering team through specification definition, system design, prototype development, testing, validation and volume manufacturing.

For an OEM project, provide the maximum ambient temperature, target temperature, estimated heat load, DC supply voltage, available dimensions and operating conditions. These parameters allow RIGID engineers to determine whether a standard Micro DC Aircon is suitable or whether a customized refrigeration system is required.