Rotary R410A Compressor
Reliable industry-standard compressor with EU-friendly R410A refrigerant.
Essential · Rooftop Integrated
VETHY VS01
Essential single-fan rooftop AC — the no-frills, fleet-friendly cooling workhorse.
Best for:
SPECIFICATIONS
Compatible vehicles: light/medium trucks, vans, day cabs, rental fleets
KEY FEATURES
Reliable industry-standard compressor with EU-friendly R410A refrigerant.
Streamlined fleet-grade build — fewer parts, easier service, lower TCO over the unit’s life.
Standard mounting cut-out and gasket fit most truck and van roofs in under 2 hours.
Operates from -20°C to +52°C ambient with stable cooling performance.
≤52 dB(A) at low fan; comfortable for overnight rest stops.
Available with custom badge, voltage and harness for fleet operators and upfitters.
APPLICATION SCENARIOS
Eight hours of overnight cab cooling on a dual-battery system — drivers wake rested without burning a drop of fuel.
Meet US (CARB) and EU anti-idling rules without sacrificing driver comfort. Dry-contact outputs integrate with Geotab, Samsara, and standard fleet telematics.
Off-grid camping with battery + solar — no generator drone, no campsite hookup needed.
Operator climate control during long shifts in the field; rugged build survives vibration and dust.
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FREQUENTLY ASKED
FAQ
Common questions about the Vethy VS01 12V/24V R410A rooftop parking air conditioner from fleet buyers, distributors and upfitters.
The Vethy VS01 is a 12V or 24V DC rooftop parking air conditioner that cools a truck, RV or van cabin with R410A refrigerant while the engine is off. It belongs to the Vethy rooftop family, which means the condenser and evaporator live in a single roof-mounted housing, freeing interior space and keeping the wiring run short. R410A gives it about 20% higher cooling than an R134a system and 25% lower power draw.
As part of the Vethy DC range, the VS01 runs from the battery bank rather than the engine, so it fits the same duty cycle as the rest of the line: 6 hours during the day and 12 hours at night, with overnight cooling that keeps the cab comfortable without idling. The twin-rotor compressor contributes 2x cooling efficiency over single-rotor designs.
Q: Is the VS01 available in both voltages?
A: Yes, the VS01 is offered in 12V and 24V DC to match the vehicle electrical system.
Q: Why choose R410A?
A: R410A delivers about 20% more cooling than R134a with 25% less power, extending runtime on the same battery bank.
Updated: 2026-05-19 · By Vethy Technical Team
The VS01 ships in two voltages, and 12V versus 24V is decided by the vehicle, not by preference. A 12V unit matches light trucks, vans and most RVs and is straightforward to wire to a standard alternator and battery. The 24V alternative matches heavy trucks, buses and construction equipment, and because it runs at double the voltage it draws half the current for the same cooling work, which means thinner cabling and less voltage drop over a long run.
Within the Vethy rooftop range, the VS01 vs VS02 Pro choice is about duty cycle. The VS01 is the 12V/24V R410A entry into the twin-rotor family; the VS02 Pro steps up to 2800 W of cooling and up to 18 hours of runtime. Both use R410A for about 20% higher cooling than R134a with 25% less power, and both ride on the twin-rotor compressor's 2x cooling efficiency. Pick the VS01 for standard overnight cooling on a 200 Ah to 250 Ah bank; step up to the VS02 Pro when the cab or the climate demands the extra capacity.