What Is Residential HVAC?

Definition

• HVAC stands for heating, ventilation and air conditioning. National codes and installation guidelines ensure that your ventilation, heating or air conditioning systems are installed properly and safely. Hundreds of residential codes are in place, all of which must be followed by HVAC installation technicians and construction companies. One of the most common sources for HVAC regulations for residential use is the International Code Council.

Purpose

• The purpose of HVAC codes in residential construction is to conserve energy and provide the safest, cleanest home environments possible. For example, IRC Chapter 11 covers insulation requirements based on the types of materials or components found in that insulation. Your insulation requirements will be different based on your geographical location and climate zone. Special energy-compliance forms are filled out and registered by contractors prior to building permit approval and for final inspection by building inspectors upon completion of construction.

Fundamentals

• HVAC-certified technicians working with air-conditioning, heating or ventilation units or systems for residential use must know the basics of installing, maintaining, servicing and repairing them. National guidelines require that every technician know and follow national codes in this field. In this way, safety and quality standards are continually met. Ventilation hoses, ductwork, insulation and correct methods of attaching units to ductwork throughout the residence ensures optimal operating function, safe ventilation of air and exhaust, and energy conservation. American Society of Heating, Refrigerating and Air-Conditioning Engineers or ASHRAE standards, guidelines, and the IRC offers detailed instructions for installation of HVAC systems.

Residential Codes

• Residential HVAC codes guide HVAC technicians and builders in the proper installation and placement of a variety of heating and air-conditioning systems. The 2009 International Residential Codes M1601.3 and M1601.4 cover the materials and insulation required in residential ductwork systems, as well as the types of joints and seams used in such installations. For example, the beginning of M1601.4.1 Joints and Seams states how joints and seams are to be made airtight using acceptable mastics, gasketing, tapes and other approved measures. Compliance of UL ratings and proper attachment and sealing of joints are also offered within this code. Hundreds of similar codes cover most design and installation scenarios.