Sizing InformationBecause a tankless water heater responds directly to your demand for hot water, correct sizing is very important. If you select a small tankless water heater, but have a large hot water demand, you will not be satisfied with the results. Also, because ground water temperatures are lower when you live in a cool/northern climate, you need a more powerful tankless electric water heater than if you lived in a warm/southern climate. It's all about sizing the correct unit for the job—and we're here to help with that.
Use this online sizing guide to help you determine which AquaPower® model is right for your needs. Whole house models need much more power to provde hot water to showers, tubs, etc. Point-of-use models are less powerful and not suited to major applications such as standard-flow showers and tubs.
We encourage you to call us at 800.582.2213 if you are unsure which model is correct for your application or have any sizing related questions.
DHE Series Whole House Sizing Guide
Information to help you size a DHE unit for a whole house application. Sizing info includes 1–4 bathroom sized homes or condos.
AQM Series Point-of-Use Sizing Guide
Information to help you size an AQM unit for a single point-of-use application, usually a lavatory sink for hand washing.
AQC Series Point-of-Use Sizing Guide
Information to help you size an AQC unit for a single point-of-use application, usually a lavatory sink for hand washing, a kitchen sink, or a utility/janitor's sink.
AQE Series Multi- Point-of-Use / Whole House Sizing Guide
Information to help you size an AQE unit for a single/multi- point-of-use application or certain whole house applications. Point-of-use applications include multiple lavatory sinks, a kitchen sink, or janitor's sink. Whole house applications include small cabins, homes in tropical climates, or low-flow showers.