VETHY / FLEET AND OEM BUYER GUIDANCE
Specify parking AC for your commercial vehicle program.
Start with the occupied space and the vehicle’s duty, then define voltage, mounting, cooling or heating needs and project responsibilities. A truck sleeper unit, a passenger-bus HVAC system and a refrigerated cargo system solve different problems.
Define which space needs conditioning
A parked tractor cab needs a comfort system for the occupied cab or sleeper. A full passenger bus has different occupancy, ventilation, air-distribution and electrical requirements. A refrigerated load requires a separate cargo-temperature specification; cab cooling is not a substitute for cargo refrigeration.
For a VETHY project, explore vehicle HVAC engineering, engineering and design, or the current parking AC range. For a bus application, discuss your project requirements.
Keep model and voltage decisions explicit
| Model | Layout and function | Cooling output | Cooling current | Refrigerant |
|---|---|---|---|---|
| VX3000SP | Split, cooling | 7,000 BTU/h | 20–45 A | R134a |
| EcoMax 3S | Split, heating and cooling | 2,200 W | 20–49 A | R134a |
| VS02-PRO | Rooftop, cooling | 2,200 W / 7,500 BTU/h | 25–50 A | R410A |
Cooling output is heat removed from the cabin; it is not electrical consumption. These published values do not establish continuous current, vehicle fit or overnight runtime. Request test conditions and installation documents with the quotation.
Use a rooftop or split layout according to the installation envelope and approved mounting arrangement. Treat each voltage and heating configuration as a distinct specification. Do not transfer current, refrigerant, weight or installation details between similar-looking products.
Separate responsibilities in the quotation
A fleet needs installation consistency and a defined maintenance route. A distributor needs accurate product literature, configuration traceability, market documentation and spare-parts planning. An OEM needs agreement on interfaces, design responsibility, validation, drawings and change control.
State which party supplies mounts, wiring, charging hardware, installation labour, commissioning and after-sales support. Confirm packing, shipment scope and the documents needed at the destination before accepting the commercial offer.
Review evidence for the proposed configuration
Request the current specification sheet, installation drawing and test conditions for the exact model. Ask whether a certificate lists that product, configuration and entity, and check its validity. An unrelated certificate or a partner’s historical customer reference does not certify a new vehicle application.
Agree which items require additional evaluation: thermal performance, electrical integration, installation integrity, noise, drainage, service access and applicable market documentation. Avoid treating a marketing statement as an acceptance criterion.
Use a pilot to define the repeat order
Run the proposed configuration on a representative vehicle with an agreed inspection and operating plan. Document the environment, cabin conditions, power use, installation details and issues found. Close those issues before fixing the configuration for repeat orders.
Provide model mix, initial quantities, forecast demand and the intended support arrangement through the wholesale enquiry route or technical RFQ checklist. No minimum order, delivery date or warranty extension is established by this guide.
Sources and specification records
Updated October 30, 2026. Model ratings follow the linked VETHY specification graphics. General technical sources explain principles; they are not certifications or tests of VETHY products.
FROM SELECTION TO A DEFINED PROJECT
Bring the vehicle brief.
Share the truck model, voltage, operating climate, installation photos and intended quantities. VETHY can review the proposed configuration and the evidence needed for your application.