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AC Tonnage Formula:
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The AC Tonnage Calculator estimates the appropriate air conditioning capacity needed for Canadian homes based on square footage. Proper sizing is crucial for energy efficiency and optimal cooling performance.
The calculator uses the standard formula:
Where:
Explanation: This formula provides a general estimate of the AC capacity required to adequately cool a given space in Canadian climate conditions.
Details: Correct AC sizing is essential for energy efficiency, proper humidity control, and optimal comfort. Oversized units short cycle, while undersized units struggle to maintain temperature.
Tips: Enter the total square footage of the space you want to cool. For accurate results, measure the actual living area and exclude garages, unfinished basements, and other unconditioned spaces.
Q1: Why is this calculator specific to Canada?
A: Canadian climate conditions, particularly in northern regions, require different sizing considerations than warmer climates due to varying temperature ranges and humidity levels.
Q2: What factors can affect AC tonnage requirements?
A: Insulation quality, window types, ceiling height, sun exposure, and local climate can all impact the actual tonnage needed beyond square footage alone.
Q3: Should I round up or down when choosing AC unit size?
A: It's generally recommended to choose the closest standard size rather than rounding up, as slightly undersized units often perform better than oversized ones.
Q4: How accurate is this square footage-based calculation?
A: While useful for initial estimates, a professional Manual J calculation that considers all factors provides the most accurate sizing recommendation.
Q5: Does this calculation work for heat pumps as well?
A: Yes, the same tonnage calculation applies to both air conditioners and heat pumps for cooling capacity.