From our measurement & verification experience combined with our commissioning efforts, we discovered that as buildings progress over time, components tend to drift. The drift is caused from normal use, or in instances where adjustments are made because of a component failure. Sometimes temporary adjustments to systems aremade, but then left in place after repairs, causing increase in energy cost.
Using our integration tool we developed for measurement & verification, we found that we could observe key points in a system and get forewarned of the possible drift. Additionally for some clients, we have semiannual commissioning service contracts where routine appointments are scheduled in order to detect failing systems and make repairs.
The concept of ongoing commissioning might be new for many owners, but the return on investment will speak for itself. We have found that the cost for our ongoing commissioning services pay dividends not only in energy cost, but in performance and comfort for building occupants as well.