HTS Ottawa is conveniently located on Campbell Avenue close to the Queensway. HTS is the largest independent built-to-order commercial and industrial full-service HVAC manufacturer representative in North America. We are committed to the individual success of all those involved in a project’s HVAC system selection, design, purchase, installation, and maintenance. Architects, engineers, building owners, general contractors, mechanical contractors and facilities maintenance teams routinely turn to us for HVAC solutions.