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Pump Sizing · Free Tool

Condensate Pump
Sizing Calculator

Calculate the right condensate pump size for your AC or furnace based on system tonnage, lift height, and drain distance.

Condensate Pump Sizing Guide

AC systems produce 1-5 gallons of condensate per hour depending on tonnage and humidity. When gravity drain isn't possible (basement, attic installations), a condensate pump lifts the water to a drain point. Undersized pumps overflow, causing water damage.

FAQ

How much condensate does AC produce?
About 0.5 GPH per ton in moderate humidity. A 3-ton system produces roughly 1.5 GPH. In high humidity (Houston, Florida), output can double.

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