Sidwal is an ISO 9001 certified company promoted by NRI technocrat Mr S S Sidhu, a mechnical engineer from the University of Michigan.

Sidwal entered the air conditioning and refrigeration industry in 1974. Through extensive inhouse research and development, Sidwal has become known for the excellent performance and quality of its products.

In 1991, Sidwal pioneered the all-indigenous development of roof mounted package air conditioners for passenger rail coaches. Since then Sidwal has supplied more than 6000 air conditioners – duly tested and approved by the Research and Standards Organisation (RDSO) – to the Indian rail coach factories. The famous Indian luxury tourist trains such as the 'Palace on Wheels', 'Royal Rajasthan on Wheels' or the 'Maharaja's Express' are all air conditioned by Sidwal.

Sidwal was the first company to have developed Roof Mounted HVAC for diesel and electric loco driver's cabin. Sidwal is the only company to have exported HVAC units and has converted 4 Non-AC coaches into AC coaches. The entire project involved replacing the windows with sealed ones, providing new interiors including seats and wall panels, providing ducting and modification of the coach roof for mounting the AC units. The Project was done jointly with RITES. Sidwal provided 4 year operation and maintenance of these coaches in Bangladesh and trained staff of Bangladesh Railways to finally take over. 

SIDWAL has service centres in Metropolitan cities rendering services to air-conditioning system of the Railway coaches under AMC since 1997.

SIDWAL has more than 315 technicians and staff to provide maintenance to the air-conditioning units a round-the-clock in the rail coaches during on-line operation. SIDWAL undertakes Annual Maintenance Contracts for Preventive as well as Corrective Maintenance with all Railways.

Sidwal has manufactured and supplied 248 Metro Saloon Car Air-conditioners under a manufacturing contract from Air International Transit, Australia for Phase I coaches.

DMRC had desired to increase the cooling capacity of HVAC system and also to add Heating for winter and De-humidification for rainy season. Sidwal designed and supplied its own Saloon air conditioner Model SID-3300 developed under a developmental order from DMRC and supplied two prototype HVACs which were tested in revenue service for more than one year. After successful service trials, DMRC placed additional order for 32 HVACs for 4 Trainsets. These are in successful service since January 2007 fitted in Rotem Coaches made by MRM at Bangalore.

The SID-3300 Saloon car Air-conditioner was tested jointly by DMRC and Sidwal. And thus, DMRC given Sidwal the status of an approved vendor.

BEML has placed the order in 2009 for 16 Saloon Air Conditioners on Sidwal on a single tender basis for the 8 Car prototypes for 6 car per Train set extension project of 70 Trainset of Phase-1, RS-1. The ducting in these 8 cars has also been provided by Sidwal.

The Electric Energy Efficiency has improved significantly by the use of state-of-the art HVAC design using scroll compressors. As a result the air -conditioner is delivering 52kw cooling with 34.6kVA power consumption. This is same power consumption as consumed by AIT air conditioner delivering 41KW cooling in RS-1.

Filters were provided on the fresh air openings to cope up with the dust-laden atmosphere of New Delhi. As a result, service life and maintenance intervals of the mixed air (fresh air and re-circulated air) filters has significantly improved (6000 kms observed by DMRC).

900 RPM condenser fan motors have been used to reduce the noice emissions to the outside of the rail car.

Mitsubishi Rotem Melco BEML (MRMB) consortium has been given the order for 188 Cars for Phase II (RS3). Based on the experience gained by Sidwal, they have placed an order for 376 Saloon Car AC and 94 Driver's Cab AC on Sidwal.

Sidwal exported 1 trainset HVACs to Rotem, Korea, which passed all tests and returned to India. Deliveries of 20 Trainset HVACs have already been made.

Sidwal also has developed and supplied 800 HVAC units for the newly introduced LHB ALSTOM designed passenger coach for Indian Railways.

Through a comprehensive technical support network Sidwal provides round-the-clock 24x7 service under Maintenance Contracts throughout the 63,465 kms of Indian Railway track length. 315 Sidwal's technicial are stationed at major rail heads throughout India.

Sidwal has received contracts from Siemens and ICF to provide Ventilation Systems to 1446 EMU coaches of MRVC Mumbai. 100% supply order has been given to Sidwal due to excellent performance experience at Western Railway in the Millennium 12 Coach rake provided with Ventilation system by Sidwal under the Indo- German project.--------

SIDWAL is also registered with Director General of Quality Assurance (DGQA), Ministry of Defence, Govt. of India, Directorate General of Aeronautics Quality Assurance (DGAQA), Ministry of Defence, Govt. of India for the supply of air-conditioners of Military Ambulances and have supplied these air-conditioners for TATA (4 X 4) 2.5 Ton Chassis and also to Swaraj Mazda 4 X 4 Ambulances.

Sidwal has a large range of air conditioners for luxury buses having seating capacity of 9, 14, 21, 29, 35, 42 and 52. Compressor is mounted on the vehicle engine as well as powered by a separate Diesel engine as a power pack. Sidwal has over 5000 buses in satisfactory service all over India.

SIDWAL has also supplied Air-Conditioning Unit (ACU) and Thermal Cooling Unit (TCU) after thorough testing by Design Research & Development Organization (DRDO), Ministry of Defence, Government of India for Mobile Autonomous Launcher System of BrahMos supersonic missile. This missile was handed over to Indian Army by the President of India on 21st June, 2007.

SIDWAL has supplied 7 ton and 10 ton Packaged Air-conditioning Units complete with electrical control panels and installation duly tested and approved by DGAQA for Air Force Radar Communication Shelters at various locations.

SIDWAL is one of the six suppliers of High Sensible Heat Ratio 7 & 10 Ton Packaged Aircons for Department of Telecom’s telephone switch gear rooms. These are equipped with microprocessor based controllers for precision control of temperature, humidity and dust.

Among other products, SIDWAL has a largest range of ISI marked Drinking Water Coolers (8 to 800 ltrs.) duly approved by Directorate General of Supplies & Disposals (DGS&D), Ministry of Supply, Govt. of India.

SIDWAL products are designed using man-machine interactive type techniques. Reliability is assured with stringent testing under controlled temperature and humidity conditions in highly equipped test rooms. Through extensive research & development, SIDWAL has produced excellent products acclaimed for their distinguished quality for more than 33 years.

SIDWAL has one of the most advanced and modern factories at Faridabad (Haryana) and Kala-Amb (Himachal Pradesh) having young and dynamic team of engineers and technicians equipped with the latest Computer Aided Design Systems and Computer Aided Manufacturing with CNC Sheet Metal Presses, Folding Machines and Brake Presses. Cooling Coils, Condenser Coils, Blowers, Motors, PCB’s, FRP moulding, Electrical Panels produced in-house provide the cutting edge benefit over the competition.

Ruggedness and longevity of our products through a strict quality control and 100% testing in controlled climate test chambers has been key strength of SIDWAL. Repeat orders are placed on us due to products backed up by a strong and prompt service team. We have been able to create an undisputed reputation in the competitive market.