About Us
Keystone Mechanical Services, established in 2005, provides solutions to mechanical & air conditioning projects of all sizes. We focus on the small works sector of industry across NSW.
We believe in a team approach to getting the job done, with experienced personnel and quality subcontractors working for Keystone. And, because we are part of the Hastie Group, we can service the smaller end of the market whilst having access the Group’s extensive resources when required.