Battery-Powered Zero-Emission Parking AC
Vethy zero-emission parking air conditioners eliminate engine idling for cabin cooling — cutting diesel use, exhaust emissions and engine wear. Battery-powered 12V and 24V rooftop and split AC units are deployed by long-haul fleets, RV builders and anti-idle compliance programs worldwide.
Why Zero-Emission Parking AC
Idling a Class 8 truck overnight burns 3–4 liters of diesel per hour. A battery-powered Vethy parking AC eliminates that idle — saving fuel, DEF, exhaust emissions and engine hours.
Explore →24V Sleeper Cab AC
Vethy 24V rooftop parking AC pairs with a 200–400 Ah lithium auxiliary battery for 8–10 hours of overnight zero-idle cooling.
Explore →12V Light-Duty AC
Vethy VS02 PRO 12V rooftop parking AC — anti-idle cabin cooling for vans, pickups, service vehicles and light trucks.
Explore →Full Rooftop Range
Compare every Vethy rooftop parking AC model — 12V, 24V and OEM variants — in one place.
Explore →products
Vethy VX3000SP split 24v truck air conditioner for rv in USA
R134A system High-power split parking air conditioner
R134A system High-power split parking air conditioner
R410a refrigerant system 4000w cooling capacity, 45A
Vethy R410A system and Twin rotor compressor
R410A system and Twin rotor compressor
R410A system and Twin rotor compressor
Frequently Asked Questions
What is anti-idle parking AC?
Anti-idle parking AC keeps the cabin cool while the engine is off, drawing power from the vehicle’s auxiliary batteries instead of running the main engine. This eliminates idle fuel use, exhaust emissions and engine wear during driver rest periods.
Does a battery-powered parking AC really last all night?
Yes. With a properly sized lithium battery bank — typically 200 Ah at 24V or 100–200 Ah at 12V dedicated to the AC — a Vethy parking AC sustains 6–10 hours of cabin cooling overnight, depending on ambient temperature.
How much fuel and CO₂ does anti-idle parking AC save?
A long-haul Class 8 truck idling 8 hours overnight burns roughly 24–32 liters of diesel and emits ~70–85 kg of CO₂. Replacing that idle with a battery-powered parking AC eliminates almost all of it. Multiplied across a fleet, the savings are significant.
Do Vethy zero-emission AC units help with CARB and anti-idle compliance?
Yes. Battery-powered parking AC is widely accepted under CARB and EU anti-idle frameworks because it provides cabin comfort without engine operation. We work with fleet buyers and upfitters on documentation and bulk-order programs.
Can I add solar to extend runtime?
Yes. Many Vethy customers add a roof-mounted solar panel (100–300 W) to top up the auxiliary battery during the day, which can extend usable cooling runtime significantly in summer.