Rainbow Mechanical Services Limited
Phone: 905.761.9101
Fax: 905.761.9140

Rainbow Mechanical Services Limited

Heating, Air conditioning, sales - service

Industrial, Commercial, Residential

Boiler & HVAC Upgrades

Replacement of existing outdated inefficiency heating and domestic boilers with new high efficiency heating and domestic hot water boiler plants including digital automated controls. Retrofit includes the the replacement of exciting gas fired make up air handlers with new. New make up air handlers provide greater efficiencies and VFD capabilities to control peak and off peak air flow resulting in greater savings.

Heating Plant & HVAC Retrofit

Replacing inefficient heating systems consisting of atmospheric boilers with new high efficiency condensing boilers.

Chiller Replacement

Chiller replacement and cooling tower repairs.

Welcome to
Rainbow Mechanical

Rainbow Mechanical Services Ltd. has been servicing the industry since 1973, serving all of Southern Ontario from London to Ottawa. We have at present over 30 service vehicles on the road. Diversity combined with first class workmanship and "Customer First" attitude, remain the backbone of Rainbow Mechanical's reputation.


Rainbow Mechanical takes pride in the technical depth and experience to service all Hydronic Heating, Chilled Water, Plumbing and HVAC Systems. Our dedication and commitment for excellent customer service has kept our customers loyal and satisfied, we take pride in the business relationships we have established.