1. What is a Heat Pump BTU Calculator?

Definition: This calculator estimates the required heat pump capacity in BTUs based on the area to be heated/cooled and the BTU per square foot requirement.

Purpose: It helps HVAC professionals and homeowners determine the appropriate heat pump size for optimal efficiency and comfort.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Total heat pump capacity (BTU/h)
• \( A \) — Area to be conditioned (square feet)
• \( \text{BTU/ft}^2 \) — BTU requirement per square foot (typically 20 BTU/h·ft²)

Explanation: The area is multiplied by the BTU requirement per square foot to determine the total heat pump capacity needed.

3. Importance of Proper Sizing

Details: Correct heat pump sizing ensures energy efficiency, proper humidity control, and prevents short-cycling or inadequate heating/cooling.

4. Using the Calculator

Tips: Enter the area in square feet and BTU per square foot (default 20 BTU/h·ft²). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical BTU per square foot value?
A: Most homes require 20 BTU/h per square foot, but this can vary based on climate, insulation, and other factors.

Q2: When would I use a different BTU/ft² value?
A: Use higher values (25-30) for colder climates, poor insulation, or rooms with high ceilings. Use lower values (15-18) for well-insulated homes in mild climates.

Q3: Does this include both heating and cooling?
A: Yes, heat pumps provide both functions, though cooling capacity is typically slightly less than heating capacity.

Q4: How do I measure the area accurately?
A: Measure length × width for each room and sum all areas to be conditioned by the heat pump.

Q5: Should I round up the calculated BTU value?
A: Yes, choose the nearest standard heat pump size (typically in 6,000 or 12,000 BTU increments).