VETHY / EcoMax 3S / PRODUCT AND APPLICATION GUIDE
EcoMax 3S: A Split Cooling and Heating Choice for Changing Seasons
EcoMax 3S is a strong shortlist choice when a vehicle needs documented cooling and heating functions in a split arrangement. It uses R134a and a GMCC twin-rotary compressor with brushless fans. Select the voltage around the engineered supply, keep each function’s references separate and review the actual seasonal use and installation scope.

EcoMax 3S is a strong VETHY shortlist choice when a vehicle project needs both cooling and heating references in a split arrangement. The documented model uses R134a and a GMCC twin-rotary compressor, with brushless indoor and outdoor fan motors. Its appeal is a clearly identified seasonal comfort package that can be arranged around the vehicle’s occupied space and available installation locations.
The buying decision should begin with the functions the operator actually needs. A customer who wants cooling during warm stops and a heating function for a different part of the working season has a broader brief than a cooling-only enquiry. This guide explains how EcoMax 3S addresses that brief, while keeping the cooling and heating ratings separate and avoiding assumptions about an undocumented heating mechanism or operating-temperature envelope.
Choose the seasonal task before the equipment label
A route can create different comfort requests during the year or even within a working schedule. The useful starting point is to describe those requests in ordinary language: when the cab is occupied, what the driver does there and which function is needed under the intended conditions.
For example, an operator may want a comfortable sleeper during warm parked periods and a heating function for cooler seasonal use. That is a reason to consider EcoMax 3S as a complete product candidate. It does not mean every possible winter condition is covered by the listed heating output.
The split arrangement is another part of the decision. Indoor and outdoor assemblies can be considered in relation to their different jobs, with the responsible installer reviewing the complete layout and connections. The customer can discuss cabin placement without assuming that a rooftop housing is the preferred approach.
This gives EcoMax 3S a clear place on the shortlist. It is not being selected merely because its name sounds efficient or because a familiar compressor brand appears on a brochure. It is being considered because the documented heating-and-cooling product, compressor architecture and split format match the customer’s stated priorities. A strong enquiry connects those priorities with a recognizable vehicle and seasonal pattern before a detailed offer is prepared.
A fleet may value this approach because it gives purchasing one defined seasonal candidate to discuss with operations and the workshop. An owner-operator may value the ability to explore both requested functions within a split format before committing to the vehicle layout. An importer may value the clearly named GMCC compressor package and separate function references for a focused product offer. These are different purchasing priorities, but each can be connected to documented EcoMax 3S attributes rather than an unsupported claim that the model is universally best for every truck.
Read the two functions as separate product references
EcoMax 3S has voltage-specific cooling and heating references. Keep each function’s output and electrical fields together instead of treating the whole table as one interchangeable operating point.
| Version and function | Listed output | Rated-power reference | Rated-current reference |
|---|---|---|---|
| 12V cooling | 2200 W | 588 W | 20–49 A |
| 12V heating | 2000 W | 624 W | 22–52 A |
| 24V cooling | 2600 W | 792 W | 10–33 A |
| 24V heating | 2200 W | 840 W | 12–35 A |
The table identifies the selected model’s references. It does not establish a common test condition for deriving efficiency or runtime from the separate fields. Cooling and heating should remain distinct in the vehicle’s power and comfort discussion.
The EcoMax 3S specification data and model specification sheet support the product identity. They are useful companions to the enquiry, especially where several people will review the offer.
For the buyer, this clarity is an advantage. The customer can see what is listed for each function and choose the appropriate nominal-voltage version around the engineered supply arrangement. The seasonal proposition becomes concrete without a fabricated universal result. The owner knows which references belong to cooling, which belong to heating and which questions still need to be resolved for the actual vehicle.
Value the GMCC twin-rotary identity accurately
The documented compressor brand is GMCC and the architecture is twin-rotary. That gives a component-focused buyer a recognizable compressor specification within the EcoMax 3S package. It can be retained in the product card and technical record rather than replaced with a vague statement about a premium compressor.
The benefit is a defined product identity. A purchasing team can understand which model is being proposed, and technical support can begin from the correct configuration. The architecture also gives the buyer a substantive point to discuss alongside the split layout and brushless airflow components.
The brand and architecture should not be treated as a complete prediction of installed performance. The cabin experience includes unit placement, surrounding fittings, the vehicle’s heat load and the supplied controls. A buyer can value the compressor choice while still evaluating the whole arrangement.
The source does not establish inverter control for EcoMax 3S. A DC voltage reference should not be expanded into a claim about compressor-speed modulation or a special energy-saving algorithm. Similarly, the heating function should be discussed through its documented ratings without assuming an undocumented heat-pump architecture.
This precision makes the recommendation stronger. The customer receives a specific GMCC twin-rotary split product with listed cooling and heating functions, rather than an attractive combination of features borrowed from other VETHY models. The documented package is substantial enough to support a serious buying discussion on its own terms.

Use the split format to develop the vehicle layout
A split system has an indoor assembly and an outdoor assembly to place appropriately within the complete installation. For a buyer who wants to preserve roof choices or coordinate equipment elsewhere on the vehicle, that format is worth considering.
The source lists indoor dimensions of 638 × 335 × 187 mm and outdoor dimensions of 799 × 180 × 430 mm. Preserve the full dimensions in that order. The source does not establish axis labels for these overall callouts, so do not assign an unsupported length, width or height interpretation to each number.
The layout should show the occupied cabin, storage, fittings and intended outdoor location. The responsible installer needs to review support, routing, access and the applicable requirements for the actual vehicle. A split format offers a different layout approach; it does not automatically prove compatibility with every available mounting position.
For the customer, the practical opportunity is to consider the indoor unit around the area being used and the outdoor unit around its installation needs. The two placements remain connected parts of one project. A good proposal makes that relationship visible rather than presenting two isolated product photographs.
EcoMax 3S is therefore appealing when the customer wants this seasonal function package and a split arrangement suits the design. The vehicle review turns the product format into a concrete proposal that the buyer can understand and the installer can carry out responsibly.
Define the warm-weather occupied area
The cooling references are 2200 W for the 12V version and 2600 W for 24V. The useful application question is what space the driver expects to occupy and under which normal conditions. Glazing, solar exposure, curtain use and door activity can all shape that task.
An illustrative sleeper project may focus on a rest area with the normal curtain in place. Another customer may spend parked time at the seat doing paperwork. The indoor placement should support the actual activities rather than assume every cab needs identical distribution.
The listed evaporator airflow is 400 m³/h, with a brushless motor. That is a documented cabin-side reference, not a promise of uniform air speed at every point in a furnished interior. Show the normal storage and bedding when evaluating delivery.
A representative demonstration can let the driver experience the initial warm condition and the later occupied period. Describe the conditions and any adjustment without claiming a universal pull-down time. The customer can then judge whether the proposed installation serves the intended use.
This makes the cooling part of the EcoMax 3S recommendation tangible. The buyer is choosing a defined capacity reference within a GMCC twin-rotary split package and placing its cabin interface deliberately. The result is a more persuasive product proposal than a rating table that never reaches the driver’s actual position.
Give heating its own seasonal brief
The listed heating outputs are 2000 W at 12V and 2200 W at 24V. These references make EcoMax 3S relevant to a customer who wants a heating function as part of the seasonal package. The brief should explain the intended conditions and occupied activity for that function separately from cooling.
Do not infer an extreme cold-weather operating limit or a guaranteed result from the output alone. The source does not establish a heating ambient envelope. A customer with a specific operating requirement should raise it directly so the appropriate information can be reviewed.
The heating brief can remain practical. Describe when the driver wants to use the function, how the cab is arranged and what the normal parked period looks like. If the route spans different conditions, identify the relevant variations rather than summarize the requirement as “winter use” without context.
This is a positive way to present the model. EcoMax 3S offers documented heating as well as cooling, so the buyer can consider one defined seasonal candidate. The customer is not asked to accept an unsupported description of how the heat is produced or how far the operating envelope extends.
A clear heating discussion also improves later evaluation. Feedback about heating should be attached to that function and its conditions, rather than blended with a favorable cooling demonstration. The two functions contribute to the same product recommendation while retaining their own application questions.
An illustrative customer might initially ask only whether the product has heating. The more useful follow-up is what the driver wants that function to do in the intended vehicle and conditions. The listed output establishes that heating belongs to the product reference; the application description establishes the project question. This allows the conversation to progress constructively without guessing the heating mechanism or promising an undocumented temperature limit. The buyer receives a concrete next step and can keep the model on the shortlist for reasons that remain clear throughout the enquiry.
Plan electrical use by the requested function
Cooling and heating have different listed electrical references. The selected 12V version lists 588 W rated power for cooling and 624 W for heating, while the 24V version lists 792 W and 840 W respectively. Keep those labels visible in the power review.
The accompanying current ranges also differ by function. They are supplier reference fields, not a complete time-based operating profile. A common condition for calculating efficiency or runtime from the separate values is not established here.
The responsible integration review should consider the actual vehicle supply arrangement, usable energy, other loads and the intended cooling or heating period. Choose the nominal-voltage version around that engineered arrangement, rather than only the larger output figure.
For a seasonal route, the owner should explain whether both functions may be requested on different stops and how charging opportunities fit the work. A power plan developed only around a favorable cooling example may not describe the intended heating use.
The buyer benefits from a complete, reviewable offer. EcoMax 3S supplies a clearly identified function package, while the integration proposal explains how it will be powered in the vehicle. The customer can compare scopes fairly and avoid treating a seasonal product description as an automatic guarantee that any existing auxiliary arrangement will support every requested use.

Make brushless airflow useful through placement
EcoMax 3S lists brushless motors for both evaporator and condenser fans. The airflow references are 400 m³/h on the evaporator side and 1500 m³/h on the condenser side. These are useful specifications to connect with the indoor and outdoor layout.
Inside, assess delivery from the normal occupied positions with furnishings in place. The source does not establish automatic oscillation or a particular temperature-setting range for this model. Explain the controls actually supplied rather than transferring a panel feature from another product.
Outside, show nearby equipment and the normal working arrangement. Obtain the applicable requirements for the actual location and preserve a practical service approach. A fan airflow number does not independently approve a mounting position or quantify an effect on neighboring equipment.
For a comfort-focused buyer, the practical benefit is a defined airflow package that can be arranged deliberately. The brushless description is a documented motor choice; installed sound and the character of delivery still need to be experienced in the actual vehicle. No numeric noise result or model-specific saving percentage is supplied here.
This keeps the proposition useful. The customer can value the product’s hardware while seeing how the installer will make it serve the occupied area. The recommendation reaches beyond a component list and becomes a clear plan for a seasonal split system in a real cabin.
Read complete-set weights without adding the indoor unit again
The source identifies complete-set net and gross weights by voltage version. For 12V, these are 25 kg net and 29 kg gross. For 24V, they are 23 kg net and 27 kg gross. The indoor unit’s separate 6.9 kg net and 10.5 kg gross references should not be added again to those complete-set figures.
This distinction is useful for both purchasing and installation planning. The customer can describe the ordered set accurately, while the responsible installer reviews the support needs of the actual assemblies and locations. A complete-set shipping reference is not a universal mounting approval.
The source also supplies separate indoor and outdoor package dimensions. These can support logistics planning, but they should not be substituted for the dimensions of the units themselves when developing the vehicle layout.
For an importer or fleet, retaining the labels avoids confusion as the offer passes between sales, logistics and the workshop. Each team can use the relevant reference for its own task without silently summing incompatible fields.
The commercial benefit is a more orderly product package. EcoMax 3S is clearly identified by function, voltage and assembly arrangement, with the supplied weight information preserved accurately. The buyer can move from a seasonal comfort enquiry toward a concrete order without turning a simple specification distinction into an avoidable discrepancy later.
Evaluate the seasonal package through separate observations
A useful first vehicle establishes a recognizable installation and operating reference. Record the selected voltage, indoor and outdoor locations and normal cabin arrangement. Let the driver use the controls actually supplied and assess the intended activities.
Cooling feedback should identify the initial condition and occupied position. Heating feedback should identify its own conditions and request. A successful demonstration of one function should not be presented as proof that the other has been evaluated under every relevant circumstance.
The goal can remain modest and concrete: approve the physical arrangement, understand the user interface and identify any remaining application question. If energy is measured, retain the method and scope with the result. Do not derive a universal runtime from the separate catalogue fields after the event.
This supports a confident EcoMax 3S recommendation. The product is selected for documented reasons, and the first vehicle shows how that package fits the customer’s actual operation. The buyer can appreciate the GMCC twin-rotary identity, brushless fans and split seasonal format while keeping project-specific outcomes attached to the evidence that supports them.
A clear reference also helps later support. The next conversation can begin with the exact unit, installation and function involved, instead of a generic statement that the cab is sometimes uncomfortable. The product remains understandable from the first enquiry through ordinary ownership.
Build the offer around the complete seasonal need
The best EcoMax 3S offer identifies the selected voltage, the requested cooling and heating uses and the installation scope. The customer should understand which assemblies and local work are included, with any additional requirements reviewed for the actual vehicle.
A product-only offer and a complete installation proposal may have different scopes. Make that difference visible before comparing prices. The split format, component identity and listed functions provide the product proposition; the vehicle work makes the proposition usable.
The EcoMax 3S product overview introduces the model, while this guide develops the broader seasonal selection logic. For a customer who wants both functions and a split arrangement, the package is worth serious consideration.
The recommendation does not depend on invented inverter control, a heat-pump assertion or a guaranteed cold-weather envelope. It rests on what is documented: R134a, GMCC twin-rotary architecture, brushless airflow hardware and separate voltage-specific cooling and heating references.
A defined vehicle enquiry allows those features to become a concrete proposal. The buyer can review the expected use, physical arrangement and supply scope together, with the seasonal need clearly stated. That is a practical basis for choosing EcoMax 3S as part of a professional vehicle comfort project.
The same clarity helps if the customer later requests another vehicle installation. Bring forward the selected EcoMax 3S version and successful project reference, then identify the new cab, supply or seasonal differences. The preferred product can remain the same candidate while the implementation receives an appropriate review. That is useful standardization: the model identity and purchasing reasons stay consistent, and material application changes remain visible. The customer can build on an earlier decision without assuming every vehicle or seasonal request is identical simply because the same product name appears on the order.
Questions about the EcoMax 3S seasonal choice
Is EcoMax 3S documented with both cooling and heating?
Yes. The source lists separate cooling and heating output, power and current references for 12V and 24V versions. Keep the functions distinct in planning and evaluation.
Is inverter or heat-pump architecture established?
Those architectures are not established by the supplied source. The documented compressor description is GMCC twin-rotary, and the heating function should be discussed through its listed references.
Can the output prove a particular cold-weather result?
No heating ambient envelope is established here. Describe the intended conditions and obtain the appropriate application review for the actual requirement.
Should indoor weight be added to complete-set weight?
No. The 12V and 24V figures are already complete-set net and gross references. Keep the separate indoor-unit weight labelled without adding it again.
Shortlist the split package for a defined seasonal project
Recommend EcoMax 3S when the customer wants a GMCC twin-rotary split product with documented cooling and heating functions and a suitable vehicle installation can be developed. Define the seasonal requests before turning the rating table into an operating expectation.
Prepare the vehicle information through the parking AC technical enquiry guide, then contact VETHY to discuss the selected version and scope. Further model-specific topics are linked from the EcoMax 3S guide hub.
Product sources
VETHY product recommendation and application analysis. Specification references identify the selected model and voltage. Installation examples are planning examples; measured project results are identified explicitly when available.
Discuss your EcoMax 3S application
Send your vehicle, supply voltage, occupied space, parking schedule and installation photographs for a model-specific recommendation.
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