Wattage Formula:
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Definition: This calculator estimates the wattage needed for a panel heater based on room size and heating requirements.
Purpose: It helps homeowners and professionals determine the appropriate panel heater size for efficient room heating.
The calculator uses the formula:
Where:
Explanation: The room area is multiplied by the heating requirement per square foot to determine total wattage needed.
Details: Correct heater sizing ensures energy efficiency, proper heating, and prevents overloading electrical circuits.
Tips: Enter the room square footage and watts per square foot (default 10 W/sq ft). All values must be > 0.
Q1: What's the typical WPSF value?
A: Most rooms need 10 W/sq ft, but use 15 W/sq ft for poorly insulated spaces or colder climates.
Q2: How do I measure square footage?
A: Multiply room length by width. For irregular rooms, divide into rectangles and sum the areas.
Q3: Should I round up the wattage?
A: Yes, choose the next available panel heater size above your calculated wattage.
Q4: Does ceiling height matter?
A: Standard calculations assume 8-9 ft ceilings. For higher ceilings, increase WPSF by 10-20%.
Q5: Can I use this for multiple rooms?
A: Calculate each room separately as heating needs may vary by room type and insulation.