Qualtiy HVAC Systems

The goal for S&E Cataldi Heating and Air Conditioning (HVAC) system is to provide proper air flow, heating, and cooling to each room. This page sets out key criteria that describe a quality system, and key design and installation considerations that should be met to achieve this goal. The information below contains our approach on design, fabrication, installation, and performance testing.

Criteria for a Quality HVAC System

  • Be Properly sized to provide correct air flow, and meet room-by-room calculate dheating and cooling loads.
  • Be installed so that the static air pressure drop across the handler is within manufacturer and design specifications to have the capacity to meet the calculated loads.
  • Have sealed supply ductwork that will provide proper air flow.
  • Be installed with a return system sized to provide correct return air flow.
  • Have sealed return ductwork that will provide proper air flow to the fan, and avoid air entering the HVAC system from plluted zones (e.g., fumes from autos and stored chemicals, and attic particulates).
  • Have balanced air flows between supply and return systems to maintain neutral pressure in the home.
  • Minimize duct air temperature gain or loss between the air handler and room registers, and between return registers and the air handler.
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S&E Cataldi Heating & Air Conditioning
33 English Range Road
Derry, NH, 03038