Heater Wattage Formula:
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Definition: This calculator estimates the wattage needed for a panel heater based on room area in square feet.
Purpose: It helps homeowners and professionals determine the appropriate heater size for efficient room heating.
The calculator uses the formula:
Where:
Explanation: The standard rule of thumb is that 10 watts of heating power is needed for each square foot of space.
Details: Correct wattage calculation ensures efficient heating, energy savings, and prevents overloading circuits.
Tips: Simply enter the room area in square feet. The value must be > 0.
Q1: Why 10 watts per square foot?
A: This is a general guideline for well-insulated rooms in moderate climates. Adjustments may be needed for different conditions.
Q2: When would I need more than 10 watts/sq ft?
A: In colder climates, poorly insulated spaces, or rooms with high ceilings, you might need 12-15 watts per square foot.
Q3: Can I use multiple smaller heaters?
A: Yes, you can divide the total wattage among multiple heaters for better heat distribution.
Q4: Does this account for windows and doors?
A: The 10 watts/sq ft estimate includes average heat loss. For many windows or exterior walls, consider increasing wattage by 10-20%.
Q5: How accurate is this calculation?
A: It provides a good starting point, but for precise calculations, consider room insulation, ceiling height, and local climate.