Buying from one of the RECD manufacturers in India is an important decision for any facility operating diesel generator sets. Before approving a purchase order, it is worth checking more than the quoted price. The exact RECD model, engine compatibility, technical documentation, certification records, installation scope, warranty, and service support should all be clear before the equipment reaches your site.
An RECD purchase can involve both engineering and regulatory considerations. A well-prepared buyer therefore treats the procurement as a technical evaluation rather than simply ordering an emission-control product based on generator capacity or a supplier's promotional claim.
Know Your DG Set Before Contacting a Manufacturer
The first item on the buying checklist should actually be information about the generator. Keep the DG-set manufacturer, engine manufacturer, exact engine model, rated speed, generator rating, gross mechanical power, manufacturing information, and existing exhaust configuration available when requesting quotations. These details allow the supplier to recommend an appropriate product rather than making a generic selection based only on kVA.
This distinction is important because two generators with similar electrical ratings may use different engines and have different technical characteristics. An RECD should therefore be evaluated according to the actual engine application. CPCB's published RECD procedure covers emission-compliance testing for diesel power-generating set engines up to 800 kW gross mechanical power and provides a framework for Type Approval and related testing. The procedure also addresses parameters including emissions, regeneration characteristics, durability, and exhaust back pressure.
Verify the Exact RECD Model
A quotation that says only “RECD – 1 unit” does not provide enough information for a proper purchase decision. The supplier should identify the manufacturer, RECD family or series, exact type/model, identifying part number, applicable engine or power range, and other relevant product information. This creates a traceable connection between the quotation, technical datasheet, certification documents, and the equipment ultimately delivered.
CPCB's published test-report format includes fields for the manufacturer, manufacturing plant, base-engine details, RECD family, RECD type/model, identifying part numbers, RECD serial number, rated power, rated speed, and application range. Before approving the purchase, make sure those details are available and consistent.
Ask for the Relevant Certification Documents
Certification should be one of the most carefully reviewed parts of the buying process. Do not rely on a supplier's statement that a product is “CPCB approved” without asking which documentation supports the claim. Request the relevant Type Approval or test records and check whether they identify the product being proposed for your generator.
CPCB's current procedure explains the certification framework and lists currently approved testing agencies including ARAI, ICAT, IIP and VRDE, as well as qualifying NABL-accredited testing and certification agencies meeting the specified requirements. A buyer does not necessarily need to interpret every laboratory measurement independently. However, the documents should be available and sufficiently detailed to establish what was tested, by whom, and for which application.
Match the Documents to Your Engine
Receiving a genuine certificate is not the end of the verification process. The next question should be whether the documentation applies to your DG-set engine. CPCB's test-report format specifically includes a description of the base engine and an enclosure identifying engine types for which the RECD is qualified within its application range.
For example, suppose your facility has a 500 kVA generator. A manufacturer may offer an RECD marketed for “500 kVA DG sets,” but your engine model may not be the same engine used for the documented test. That difference should be addressed before purchase. Ask the supplier to explain the relationship between your engine and the RECD's documented application range in writing.
Check Performance Information Carefully
Emission-reduction percentages are useful, but they should be read in context. Different manufacturers may publish figures for PM, HC, CO, NOx, smoke, or other parameters. Those figures can relate to particular products, engines, test cycles, and conditions. A percentage published for one configuration should not automatically be treated as a universal result for every DG set.
CPCB's test-report format includes baseline emissions, emissions with the RECD fitted, PM calculations, smoke, specific fuel consumption, regeneration-related information, exhaust back pressure, and other performance checks. For this reason, ask for technical information relevant to the particular model and application rather than comparing one headline percentage against another.
Understand What Is Included in the Quotation
A low quotation can become expensive when important items are excluded. Before placing the order, review whether the quoted price includes the RECD itself, controller and sensors where applicable, mounting arrangements, exhaust modifications, wiring, installation, commissioning, transportation, testing, and training.
The commercial document should make exclusions clear. This is especially important for industrial facilities where installation may require mechanical or electrical work around an existing generator. Comparing complete quotations rather than equipment prices alone gives a more realistic picture of the project cost.
Examine Exhaust and Installation Requirements
The physical installation deserves attention before the order is finalized. The manufacturer should understand the existing exhaust arrangement and determine whether modifications are necessary. Available space, mounting requirements, sensor positions, controller location, access for maintenance, and exhaust-line configuration can all influence the installation.
Exhaust back pressure is specifically addressed in CPCB's RECD testing framework, making it an important engineering parameter to discuss with the supplier. A site survey can therefore be particularly useful for larger generators or installations with limited space.
Review Warranty and Maintenance Terms
Warranty should never be left as an informal promise. Check when the warranty begins, which components are covered, what exclusions apply, whether labour is included, and how replacement or service requests will be handled. Maintenance recommendations should also be documented so the facility's operating team understands its responsibilities.
Aceget's published product information, for example, specifies a one-year standard warranty and on-site service for certain RECD models. Its 125 kVA product page also recommends maintenance at 2,000-hour intervals. These are manufacturer-published terms and should be confirmed for the exact model quoted. The same verification approach should be applied to any supplier.
Consider After-Sales Service Before You Buy
An RECD is expected to operate alongside the DG set, so after-sales support matters. Ask the manufacturer about technician availability, spare-parts support, troubleshooting, preventive maintenance, AMC options, and expected response procedures. For a facility with critical backup power, technical support can have significant operational value.
Aceget states that it offers pan-India service and dedicated technical support, while its Delhi service operation describes site inspection, professional installation, after-sales maintenance, and AMC options. A buyer should nevertheless confirm the actual service arrangements available at the specific installation location.
Check the Meaning of “CPCB Approved RECD”
The phrase CPCB approved RECD should be treated as a starting point for verification. Ask the supplier to identify the exact RECD model, the relevant Type Approval or test documentation, the testing agency, and the application covered. Then compare those records with your DG-set information. CPCB's published documentation makes clear that RECD evaluation involves the RECD and engine application together, rather than treating an emission-control device as a completely generic product.
It is also important not to confuse product-level certification with complete site-level compliance. The applicable requirements for a particular DG set may depend on current regulations, the equipment, facility, location, and directions issued by competent authorities. Buyers should therefore verify current CPCB and applicable State Pollution Control Board requirements directly.
Review the Manufacturer's Actual Capabilities
The supplier's manufacturing and service capabilities can tell you a great deal about what to expect after the purchase. Look at whether the company provides product-specific technical information, maintains identifiable manufacturing facilities, offers installation assistance, and supports customers after commissioning.
Aceget states that its RECD systems are designed and manufactured at its Noida facility, and its certification page publishes Type Approval information for ranges including 15.03–119 kW, 110.7–250 kW, and 300.3–797 kW. For a buyer, this type of published information provides useful material for supplier evaluation. The final selection should still be based on the particular generator application and supporting documentation.
Keep Every Document After Installation
The procurement checklist should continue after delivery. Maintain copies of the quotation, purchase order, technical datasheet, model and part-number information, relevant certification or test documents, installation report, commissioning records, warranty, and maintenance information.
This documentation can become valuable later when equipment is serviced, transferred between departments, audited, or evaluated against updated regulatory requirements. A clear record also makes it easier to establish exactly which RECD was installed on which generator.
Frequently Asked Questions
What information should I collect before ordering an RECD?
Keep the DG-set manufacturer, engine manufacturer, exact engine model, rated speed, generator rating, gross mechanical power where available, manufacturing details, and existing exhaust information ready for the supplier.
Should I compare RECD prices before checking certification?
No. First establish that the proposed products are technically suitable and adequately documented. Price comparisons become meaningful only when the technical and commercial scope is comparable.
What certification information should an RECD supplier provide?
Request the relevant Type Approval or test documentation and verify the manufacturer, RECD model, identifying information, testing agency, engine application, and applicable technical results.
Does a CPCB-related certificate automatically prove site compliance?
No. Product certification and site-level compliance are not necessarily the same. Current requirements applicable to the specific DG set and facility should be independently verified.
Should installation be included in the RECD quotation?
The quotation should clearly state whether site inspection, installation, exhaust modifications, commissioning, transportation, and other associated work are included or charged separately.
Conclusion
A careful buyer should never treat an RECD order as a simple equipment purchase. The right decision starts with accurate DG-set information and continues through model selection, application matching, documentation verification, installation planning, warranty review, and after-sales support. For businesses evaluating RECD manufacturers in India, a well-structured buying checklist can prevent many avoidable problems. It helps distinguish between a product that merely sounds suitable in a sales conversation and one that can be properly identified, technically evaluated, installed, maintained, and documented. Aceget provides published certification information, product specifications, manufacturing details, and service information that prospective customers can review as part of their supplier evaluation. Before signing the purchase order, verify the exact RECD model against the actual engine application, obtain the relevant supporting documentation, define the complete installation and service scope, and confirm current regulatory requirements from official sources. This approach gives procurement teams a stronger technical basis for selecting an RECD and maintaining a reliable record throughout the product's operating life.
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