They are also offering comprehensive solutions for contractors who specialize in retrofitting controls systems in older buildings. This is a special hvac challenge. According to commercial contractors and engineers, buildings constructed in the 1970s and 80s — and those older buildings that had early digital systems retrofitted over pneumatics — may now have a hodgepodge of what was once state-of-the-art climate control systems.
Some unitary-commercial equipment manufacturers are providing contractors control solutions that are optimally applied to their own equipment, but that can also be applied to other hvac brands. The Lennox L Connection Network, for instance, is a commercial control system that offers remote monitoring, diagnostics, system setup, and alarm reset.