Ask each contractor for several references from recent installations. Ask the contractor to provide verification of formal, certified training in design, installation and service of the equipment they are installing. The contractor should recommend a system based on your families' needs and install the equipment to manufacturer and code specifications. Insist on a properly designed and sized system. Comfort, efficiency and dehumidification depend on proper design and installation.
Oversized systems are an unnecessary expense and perform poorly.
We also recommend new ductwork designed specifically for the system. Unit size and efficiency ratings are key factors that impact purchase price, comfort and operating cost. To improve comfort and reduce operating cost, your home should have adequate insulation . All insulation products should be installed to manufacturer and code specifications. Quality ductwork is important.