Heat Pump Coverage Formula:
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Definition: This calculator estimates the required heat pump capacity based on area and BTU per square foot requirements.
Purpose: It helps HVAC professionals and homeowners determine the appropriate heat pump size for a given space.
The calculator uses the formula:
Where:
Explanation: The area is multiplied by the BTU requirement per square foot to determine the total heat pump capacity needed.
Details: Correct heat pump sizing ensures energy efficiency, proper temperature control, and system longevity.
Tips: Enter the area in square feet and BTU per square foot (default 30 BTU/h·ft²). All values must be > 0.
Q1: What's the typical BTU/ft² requirement?
A: Most homes need 20-30 BTU per square foot, depending on climate and insulation.
Q2: How does this relate to a 30,000 BTU heat pump?
A: A 30,000 BTU unit would cover about 1,000-1,500 sq ft at 20-30 BTU/sq ft.
Q3: When would I need a higher BTU/ft² value?
A: For older homes, poor insulation, or colder climates, you may need 30-40 BTU/sq ft.
Q4: What other factors affect heat pump sizing?
A: Ceiling height, window quality, and local climate are important considerations.
Q5: Should I round up the calculated capacity?
A: Yes, it's recommended to round up to the nearest standard heat pump size.