Showers & DHW — water-heating energy and CO₂
Flow rate ({{volume}}/min US gal or L), shower minutes, ΔT, and efficiency—resistance vs heat-pump water heater US home.
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Frequently asked questions
- What does Showers & DHW — water-heating energy and CO₂ do?
- It runs the calculation model from the form. The result appears after you click Calculate.
- What formula does it use?
- The logic shown under “How the results are calculated” below the form.
- What inputs do I need?
- Values from field labels; units and currency (if any) from the page header.
- Is the result exact or an estimate?
- Depends on the model — formulas are exact within their assumptions; simplified models are indicative only.