Massive heat loss/gain from ductwork in n unconditioned space) Minimizing energy loss in commercial buildings is a national energy imperative. According to a recently released study by, the consulting firm McKinsey retrofitting improvements to reduce energy loss could potentially reduce energy consumption by 29% by 2020. The study forecasts that this reduction would provide an annual savings of $290 billion in energy costs and eliminate 360 million tons of GHG emissions.
Proper air sealing duct work has less than a 3 year payback. Despite its name duct tape should never be used on duct work. Quality air filters changed frequently increases the efficiency and extends the life of any HVAC system.