Don't sacrifice your system's efficiency...

Read the studies below about how important it is to have an efficient system that is installed by a quality contractor such as Doornbos!

North Carolina Alternative Energy Corp. This non-profit organization examined air conditioning manufacturers' efficiencies versus actual efficiencies that resulted after installation:

• 90% of the units tested exhibited some sort of energy-wasting problem.

• 50% had an improper refrigerant charge.

• 40% failed to meet minimum air flow criterion. 20% were barely inside the range specified by manufacturers.

• A deficiency of 20% in air flow reduces the SEER rating by 17%.

• A 15% return air leak from a 120 degree attic could reduce a 12 SEER to 6!
  
  Texas A & M University found a 23% refrigerant undercharge could result in a 52% efficiency loss.
  
  Pacific Gas & Electric found the average heating energy savings for (1) repair of disconnected ducts was 15% (2) repair of diffuser leakage 7.5% (3) correcting low air flow 5.6% (4) repairing leaks and correcting refrigerant charge 18.4%.
  
  Lakeland Electric & Water researchers found that by repairing leaking duct work, cooling energy was reduced by an average of 17.4%.
  
  Honeywell found that heat pumps lost almost 50% of their efficiency after 20 years, even if typical "dust stop filters were installed. In 20 years, a 12 SEER unit could degrade to a 6 SEER. This would DOUBLE the energy cost.
  
  Louisiana State University and Gulf States Utility found consumers could save about $30 per month just by making sure their air conditioning system was cleaned and serviced regularly.
  
  HVAC's Manufacturer's data shows a condensing unit with a SEER of 13 matched with an old air handler would decrease the SEER to 9.2, resulting in 30% less efficiency.