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BTU Calculation Formula:
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BTU/h (British Thermal Units per hour) calculation helps determine the appropriate furnace size for Canadian homes. Proper sizing ensures efficient heating, energy savings, and optimal comfort throughout cold Canadian winters.
The calculator uses the Canadian furnace sizing formula:
Where:
Explanation: This formula provides a general estimate for furnace sizing in Canadian climate conditions, accounting for typical insulation standards and temperature requirements.
Details: Correct furnace sizing is crucial for energy efficiency, comfort, and system longevity. An oversized furnace will short-cycle, reducing efficiency and comfort, while an undersized unit will struggle to maintain temperature.
Tips: Enter the total area of your space in square feet. For multi-level homes, calculate the total square footage of all heated areas. Ensure accurate measurements for best results.
Q1: Why use 40 as the multiplier for Canadian furnaces?
A: The multiplier 40 accounts for Canadian climate conditions, typical insulation standards, and the need for adequate heating capacity during extreme winter temperatures.
Q2: What factors can affect furnace sizing requirements?
A: Ceiling height, insulation quality, window types, local climate, home orientation, and air leakage all impact heating requirements beyond simple square footage.
Q3: Is this calculator suitable for all Canadian regions?
A: This provides a general estimate. Northern regions may require additional capacity, while milder coastal areas might need less. Professional assessment is recommended.
Q4: How accurate is this calculation for Lennox furnaces?
A: This calculation provides a baseline estimate. Lennox offers various models with different efficiency ratings that should be considered in final selection.
Q5: Should I consider other factors besides BTU/h?
A: Yes, also consider AFUE rating, furnace type (single-stage, two-stage, modulating), home layout, and existing ductwork when selecting a furnace.