Condensation and Drain Piping Services in Mumbai for HVAC Systems

Air-Cooled Chiller

Condensation and Drain Piping

Condensate piping refers to the system of pipes designed to collect and transport condensate—water formed from the cooling process in air conditioning, refrigeration, and HVAC systems—to an appropriate drainage or disposal point. Efficient condensate piping is essential to prevent water accumulation, leakage, or potential damage to building structures and HVAC equipment.

In the HVAC industry, PVC (Polyvinyl Chloride) and CPVC (Chlorinated Polyvinyl Chloride) are the most commonly used materials for condensate piping. PVC is widely preferred for its corrosion resistance, durability, and ease of installation, making it suitable for standard temperature applications. CPVC, on the other hand, is specifically engineered to withstand higher temperatures, making it ideal for systems that produce hot condensate. Both materials are cost-effective, readily available, and offer reliable performance in a variety of HVAC setups.

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Frequently Asked Question

Condensate (or drain) piping refers to the network of pipes that collect and carry away moisture (water) produced in HVAC systems—especially from cooling coils, air handlers, chillers, and refrigeration units. Without proper drainage, condensate can leak, cause mould, damage structural elements, or degrade HVAC performance.

Why is condensate piping important?

Without properly designed and installed drain piping, water from cooled air or chiller coils can build up, leak, cause mould, structural damage, or hamper system efficiency.

What material should I choose: PVC or CPVC?

Use PVC for standard, cooler condensate lines. Choose CPVC for lines where condensate is warm or exposed to higher temperatures, or where extra durability is needed.

What slope is recommended for condensate piping?

For horizontal piping, a slope of at least 1/8 inch per foot (~1%) is typical to ensure gravity-driven flow. Exact slope may vary based on capacity and piping run.

How often should I clean or inspect the condensate piping?

At least annually for standard installations. More frequently in systems with heavy load, or where air quality or environmental conditions contribute to higher debris or biological growth.

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