Optimum Maintenance Systems Ltd.
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Air Conditioning Solutions

Optimum Maintenance Systems Ltd (OMS) has established a reputation for expertise in the servicing, maintenance, and repair of large chillers. We have some of the most experienced engineers in the industry. Our services range from the installation of split and VRF systems to the turnkey replacement of complete chiller systems. We maintain some of the largest chillers in the country.
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History of Optimum Maintenance Systems ::..


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OMS (originally trading as Olympic Group), began trading in the air conditioning industry in 1978 quickly establishing a solid reputation as a provider of quality design, installation and service of all types of air conditioning equipment.

In 2005 OMS was purchased by United Technologies Corporation (UTC), a diversified company whose products include Carrier heating and air conditioning, Hamilton Sundstrand aerospace systems and industrial products, Otis elevators and escalators, Pratt & Whitney aircraft engines, Sikorsky helicopters, UTC Fire & Security systems and UTC Power fuel cells.

As experienced specialists working on equipment from all major manufacturers, we can provide objective and impartial advice while building on the long-term financial reassurance that our parent company offers.



Air conditioning systems containing more than 3kg of HFC refrigerants require mandatory leak inspections by qualified technicians.

Larger systems require installation of automatic refrigerant leak detection systems.

Documentation must be available on-site, for inspection at any time by the authorities. This is the responsibility of the operator.