What Sidwal does

Sidwal Refrigeration Industries Pvt. Ltd. (Sidwal) is an Indian manufacturer of HVAC systems and railway subsystems for mobile applications, operating as a subsidiary of the publicly listed Amber Group (CIN U74899HR1965PTC112468) and headquartered in Faridabad, Haryana. The company builds roof-mounted and saloon air conditioning units for mainline railways, metros, monorails, RRTS, EMUs, and locomotive cabs, and has supplied 35,000+ HVAC units approved by India's RDSO and deployed 3,600+ metro units across Delhi, Kolkata, Jaipur, Mumbai, Bangalore, and Chennai. Through a Joint Venture with Yujin Korea and a Technology Transfer with Ultimate Europe, Sidwal has extended its portfolio into integrated railway subsystems including brakes, couplers, pantographs, driving gear, doors, and gangways, positioning it as one of the few Indian suppliers offering multi-system rolling stock packages.

Beyond mobility HVAC, Sidwal manufactures bus air conditioning (including 7–12m electric bus AC), heavy equipment HVAC (mining dump trucks, harvesters, rail tamping machines), defence vehicle and equipment climate control (battlefield surveillance, missile launcher TCUs, ATVs, mine-protected vehicles, ambulances), and a precision cooling line covering data center perimeter, in-rack, in-row, panel, telecom shelter, and battery/UPS room air conditioning. Core technology rests on in-house R&D with automatic psychrometric laboratories, microprocessor and PLC-based smart control architecture with MODBUS, Ethernet, and CAN integration, and durable stainless steel and aluminum structures designed for demanding Indian operating conditions. Products comply with global railway standards including EN 45545 HL2/HL3, IEC 61373, ISO 9000, and IEEE 50128.

Sidwal operates 9 ISO 14001:2015 and ISO 45001:2018 certified manufacturing sites and 30+ service centres across India, employs between 1,001 and 5,000 people, and reaches customers through a direct enterprise sales motion targeting Indian Railways, metro authorities, state transport corporations, defence organizations, and heavy equipment OEMs. Revenue is generated primarily through one-time hardware sales of HVAC systems and railway subsystems, with pricing not publicly disclosed; recurring aftermarket service across the installed base provides a secondary revenue stream. Marketing is minimal, limited to LinkedIn presence and the corporate website, reflecting a relationship-driven B2B enterprise go-to-market rather than a consumer or SMB model.

Name

Sidwal

Legal name

Sidwal Refrigeration Industries Pvt. Ltd.

Website

https://sidwal.com

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Sidwal is an Indian manufacturer of HVAC systems and integrated railway subsystems for railways, metros, buses, defence vehicles, and data centers, supplying Indian Railways, metro authorities, and defence as a subsidiary of Amber Group.

Ownership category

akta.pro rank

Product category

Railway and Mobility HVAC Systems

NAICS

Transportation Equipment Manufacturing (336), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Railroad Equipment (3743), Steam & Air-Conditioning Supply (4961)

akta.pro primary industry

Commercial Vehicle Cooling, HVAC & Thermal Management Manufacturing (IMACABAN)

akta.pro secondary industries

Bus HVAC & Thermal Systems Manufacturing (IMACADAL), Automotive HVAC Modules & Integrated Climate Units (IMACALAA)

Keywords

• Railway HVAC systems
• Metro cooling solutions
• Bus air conditioning
• Precision cooling systems
• Defence vehicle HVAC

Headquarters

HQ city

New Delhi

HQ country

India

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. HVAC Systems Sales: One-time hardware sales of HVAC systems for railways, metros, buses, defence vehicles, and heavy equipment. Products include roof-mounted ACs, saloon HVAC, cab HVAC, bus ACs, and precision cooling units.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Sidwal designs, manufactures, and supplies HVAC systems and integrated subsystems for mobility applications, primarily serving railways, metro rail, buses, defence vehicles, heavy equipment, and data centers. The product portfolio spans railway and metro coach HVAC, bus and electric bus air conditioning, defence vehicle climate control, and precision cooling for data centers, complemented by railway subsystems such as doors, gangways, brakes, couplers, pantographs, and pantry systems sourced through joint ventures and technology transfer partnerships.

Product overview

Sidwal is a leading provider of mobility HVAC solutions and railway subsystems, operating as a subsidiary of Amber Group. The product portfolio consists of three main categories: (1) Railway & Metro HVAC Systems including coach HVAC, metro saloon HVAC, EMU cab HVAC, locomotive cab HVAC, RRTS saloon HVAC, and monorail saloon HVAC for various rail applications; (2) Bus and Heavy Equipment HVAC including conventional and electric bus AC, mining equipment AC, defence vehicle AC, and specialized applications like ambulance AC; (3) Precision Cooling Solutions for data centers including perimeter cooling, in-rack cooling, in-row cooling, panel cooling, telecom shelter AC, and precision split AC. Additionally, through joint ventures with Yujin Korea and technology transfer partnerships with Ultimate Europe, Sidwal offers integrated railway subsystems including doors, gangways, brakes, couplers, pantographs, and driving gears. Sidwal specializes in end-to-end in-house manufacturing with in-house R&D capabilities including automatic psychrometric laboratories, and smart control architecture with microprocessor and PLC systems featuring MODBUS, Ethernet, and CAN network integration. Since pioneering India's first roof-mounted AC for rail coaches in 1991, over 35,000+ HVAC units have been supplied to Indian Railways and 3,600+ units deployed across metro projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Railway Coach HVAC
• Metro Saloon HVAC
• MonoRail Saloon HVAC
• RRTS Saloon HVAC
• EMU Cab HVAC
• EMU Cab HVAC (Vertical)
• Loco Cab HVAC
• Metro Driver Cab HVAC
• 5-13m Conventional Bus AC
• 7-12m Electric Bus AC
• Mining Dump Truck AC
• Rail Track Maintenance Machines AC
• Harvester Cabin AC
• Battlefield Surveillance System (BSS) AC
• Defence Split AC
• Temperature Control Unit (TCU) for Missile Launchers
• Vertical Slip On AC (Defence)
• Defence Window AC
• Wall Mount Slip On AC (Defence)
• ATV AC
• Mine Protected Vehicle AC
• Ambulance AC
• Gangways
• Doors (Railway Rolling Stock)
• Pantry Systems
• Brakes (Railway Rolling Stock)
• Coupler (Railway Rolling Stock)
• Pantograph
• Driving Gear
• Switchboard Cabinet
• Cab Booster Units
• Feeder Junction Box
• MicroController HVAC Controller
• Data Center Perimeter Cooling
• In-Rack Cooling
• In-Row Cooling
• Panel Cooling
• Battery & UPS Room AC
• Precision Split AC
• Telecom Shelter 2in1 AC
• Ductable ACs

Quantifiable outcome

• 35,000+ HVAC units supplied and approved by RDSO
• +2 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Three partnerships are on record, tiered core and flagship.

• Yujin KoreacoreStrategic or Co-development PartnerJoint Venture with Yujin Korea for Brakes, Couplers, Driving Gear, and Pantographs. This partnership extends Sidwal's railway subsystems portfolio beyond HVAC, making it one of the few companies offering integrated, high-value systems for the rolling stock industry.
• Ultimate EuropecoreTechnology or IntegrationTechnology Transfer partnership with Ultimate Europe for Doors and Gangways. This enables Sidwal to offer comprehensive railway subsystem solutions including doors and gangways alongside their existing HVAC offerings.
• Amber GroupflagshipOthersParent company (Amber Group) provides strategic direction, ESG framework, and corporate governance. Sidwal operates as a subsidiary of Amber Group (CIN: U74899HR1965PTC112468).

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Subros Limited: India's largest automotive air conditioning manufacturer, supplying HVAC to passenger vehicles, commercial vehicles, and buses. Most direct domestic peer to Sidwal in Indian mobility HVAC, particularly in the bus AC and commercial vehicle segments.
• Thermo King (Trane Technologies): Global leader in transport temperature control for buses, trucks, and rail. Directly comparable to Sidwal's bus AC and rail HVAC product lines and competes on Indian transport refrigeration tenders.
• Knorr-Bremse: Global rail braking systems and rolling stock subsystems supplier with HVAC capabilities. Sidwal is partnered with Knorr-Bremse's Korean affiliate (Yujin Korea), making Knorr-Bremse both a partner and a competing rolling stock integrator.
• Wabtec Corporation (formerly Faiveley Transport): Global rail equipment supplier offering HVAC, doors, and gangways via Faiveley. Directly competes with Sidwal in Indian metro and mainline rail subsystems tenders, including the door/gangway category where Sidwal partners with Ultimate Europe.
• Liebherr: Supplies HVAC and thermal management systems for rail vehicles and buses globally. Competes with Sidwal on premium railway and metro HVAC platforms in India and internationally.
• Vertiv Holdings: Global leader in data center precision cooling (in-row, in-rack, perimeter). Directly comparable to Sidwal's emerging precision cooling business that leverages its railway-grade control architecture.
• Stulz Group: Specialist in precision air conditioning for data centers and telecom infrastructure. Comparable to Sidwal's data center and telecom shelter cooling product line.

Broad incumbents

• Valeo: Global automotive thermal management supplier with bus and commercial vehicle HVAC offerings. Overlaps with Sidwal's bus and commercial mobility HVAC but as part of a much broader automotive portfolio.
• Denso Corporation: Major automotive HVAC and thermal management supplier with global bus AC exposure. Comparable to Sidwal on technology and product category, but operates at significantly larger scale across all vehicle segments.
• Mahle Group: Global automotive thermal management supplier with bus and commercial vehicle HVAC products. Competes with Sidwal in commercial vehicle thermal management, though Mahle's portfolio extends across all vehicle powertrain cooling.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks4 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/sidwal

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sidwal