CPVC vs PVC Pipes: Complete Comparison for Homeowners

PVC (Polyvinyl Chloride) pipes are used for cold water supply and drainage. CPVC (Chlorinated Polyvinyl Chloride) pipes can handle both hot and cold water, making them essential for internal plumbing lines where geysers and hot water connections exist. Using PVC for hot water lines is a common mistake that leads to pipe warping and leaks within months.

CPVC is the standard for all internal water supply lines in modern homes — both hot and cold. It can handle temperatures up to 93°C, making it safe for geyser connections, kitchen hot water lines, and bathroom mixing valves. Top brands include Astral CPVC Pro, Supreme CPVC, and Ashirvad CPVC. CPVC uses solvent cement jointing, which creates a permanent, leak-proof bond.

PVC pipes are used for drainage, waste, and vent (DWV) systems — toilet drainage, kitchen waste lines, rainwater pipes, and underground sewage. PVC is also used for electrical conduit. It's cheaper than CPVC and perfectly suited for non-pressurised and cold water applications. SWR (Soil, Waste, and Rainwater) PVC pipes from Astral and Supreme are the most common in Gurgaon construction.

For internal water supply (CPVC): 15mm (half inch) for individual tap connections, 20mm (three-quarter inch) for branch lines, 25mm (one inch) for main supply lines. For drainage (PVC): 75mm for wash basin and sink waste, 110mm for toilet connections, 160mm for main soil stacks. Your plumber will specify exact sizes, but knowing the basics helps you verify.

CPVC pipes cost roughly 40-60% more than PVC, but this is justified by their hot water capability and longer lifespan in pressurised systems. For a typical 2-3 BHK flat's complete plumbing, the difference amounts to Rs 5,000-10,000 — a small price for reliability. HandyPanda delivers CPVC and PVC pipes from Astral, Supreme, and Prince across Gurgaon in under 60 minutes.