BIS Certification for Thermal Storage Room Heaters in India: Complete Compliance Guide

BIS Certification for Thermal Storage Room Heaters in India products are subject to mandatory BIS Compulsory Registration Scheme (CRS) requirements in India. Every manufacturer and importer must obtain a valid BIS CRS registration for each model before the product can be manufactured, imported, or sold in the Indian market. Non-compliance attracts penalties including product seizure, market withdrawal, and prosecution under the BIS Act 2016.

This guide covers the applicable Indian Standards, mandatory safety testing requirements, the step-by-step CRS registration process, documentary requirements, and the most critical compliance pitfalls for this product category in 2026.

📜 Applicable Indian Standards

The following Indian Standards apply to this product category under the BIS CRS framework:

• IS/IEC 60335-2-61 — Particular requirements for thermal storage room heaters
• IS/IEC 60335-1 — General requirements for safety of household and similar electrical appliances
• IS 13252 (Part 1) — Indian adaptation of IEC 60335-1

🔬 Mandatory Safety Tests

BIS-approved laboratories evaluate the following key areas during safety testing for this product category:

📋 Step-by-Step BIS CRS Registration Process

1. Standard IdentificationConfirm the product maps to IS/IEC 60335-2-61. Heaters with fan-assisted discharge must also verify compliance with relevant fan-safety clauses within the standard.
2. Appoint AIRForeign manufacturers must appoint an Authorised Indian Representative (AIR) before filing the BIS CRS application.
3. Sample Testing at BIS-Approved LaboratoryTesting is time-intensive due to full charge-discharge cycle endurance requirements. Allow 6-8 weeks for laboratory evaluation.
4. Online Application via BIS Manak PortalSubmit Form VI, test report, factory documents, photographs, trademark certificate, and AIR appointment letter.
5. BIS Query ResolutionCommon BIS queries involve thermal cut-out actuation data, core temperature documentation, and factory-level quality control records.
6. CRS Registration and R-Number GrantBIS issues the R-number upon approval, to be marked on the appliance, packaging, and user manual.
7. Renewal and Change ManagementValid for 2 years. Changes to storage brick material, charging element, or thermal cut-out specification require re-testing.

📄 Documents Required

• Completed BIS Form VI and signed declaration of conformity
• Full test report as per IS/IEC 60335-2-61 and IS 13252 (Part 1) from BIS-approved laboratory
• Factory address and registration proof
• Trademark registration certificate or application
• AIR appointment letter (for foreign manufacturers)
• Product photographs with R-number label placement
• Technical specification sheet (rated voltage, wattage, storage capacity, discharge rate)
• Thermal cut-out calibration certificate
• User and installation manual in English and/or Hindi

☠ Common Rejection Reasons

Common rejection causes include thermal cut-out failing to actuate within the temperature range specified by the standard, surface temperature on accessible panels exceeding permissible limits during the discharge phase, incomplete endurance cycle test documentation, and inconsistencies between the model number in the test report and the product submitted for registration.

🏭 Special Considerations for Importers

Thermal storage room heaters are typically imported for high-end residential and commercial projects. Importers must ensure each model has a valid BIS CRS R-number before customs clearance. As these are high-wattage fixed appliances, customs authorities treat non-compliance with particular seriousness.