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Hot Water System Capacity Formula:
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Hot water system sizing in Australia is calculated based on the number of occupants in a household. The standard calculation uses 45 liters per person to determine the appropriate system capacity for adequate hot water supply.
The calculator uses the standard Australian formula:
Where:
Explanation: This formula provides the minimum recommended hot water system capacity based on typical Australian usage patterns and climate conditions.
Details: Correctly sizing your hot water system is essential for ensuring adequate hot water supply, energy efficiency, and cost-effectiveness. An undersized system will run out of hot water, while an oversized system wastes energy and money.
Tips: Enter the number of occupants in your household. The calculator will provide the recommended minimum hot water system capacity in liters. Consider additional factors like simultaneous usage patterns and climate when making your final decision.
Q1: Is 45L per person sufficient for all households?
A: This is a general guideline. Households with high simultaneous usage (multiple showers at once) may need additional capacity.
Q2: Does climate affect hot water requirements?
A: Yes, colder regions may require slightly larger systems due to greater incoming water temperature differential.
Q3: What about different types of hot water systems?
A: This calculation applies primarily to storage systems. Instantaneous systems require different sizing considerations based on flow rate.
Q4: Should I consider future household changes?
A: Yes, it's wise to consider potential increases in household size when selecting a system to avoid premature replacement.
Q5: Are there rebates available in Australia?
A: Various Australian states offer rebates for energy-efficient hot water systems. Check with local authorities for current programs.