How heat pump technology turns ambient air into hot water

How to Install a Heat Pump Water Heater | This Old House · 7:05 · Video: This Old House · Watch at the source

In short: Replacing an aging electric water heater with a heat pump model offers significant efficiency gains. This video guides you through the specific plumbing requirements and tools needed to transition to this modern heating technology.

Unlike standard electric heaters, heat pump water heaters extract warmth from the surrounding air to heat the water inside a storage tank. While the installation process mirrors that of a traditional electric unit, it requires a critical addition: a drainage system to collect and discharge condensation, which is a byproduct of the heat pump process.

The project involves replacing old shut-off valves with new ball valves and connecting the unit using copper pipe and fittings. Essential tools for the job include a propane torch for soldering joints, a tubing cutter, and various pliers and wrenches.

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