PVC (polyvinyl chloride) pipe is a rigid plastic tubing commonly used for drain, waste, and vent lines in HVAC systems, as well as cold water applications. PVC is one of the most widely used plastics in construction due to its affordability, ease of installation, and chemical resistance. It is not recommended for hot water applications above 140°F.
Technical Characteristics
PVC operates safely between 40°F and 140°F, limiting it to cold water and drainage applications. It meets ASTM D1784 standards for potable water use. Standard PVC has Schedule 40 (standard thickness) and Schedule 80 (extra-heavy) ratings, with Schedule 40 sufficient for most HVAC drainage.
HVAC Applications
PVC is extensively used for condensate drain lines from air handlers and heat pumps. It also handles ductwork supports, refrigerant line protection, and cold water supply lines in some regions. Its corrosion resistance makes it ideal for humid environments.
Installation Benefits
PVC connections use solvent cement, creating reliable bonds without special equipment or skills. Installation is fast and cost-effective. PVC is lightweight and easily transportable compared to metal pipes, reducing labor expenses for contractors and homeowners alike.