1. What is Heat Pump Sizing?

Heat pump sizing determines the appropriate capacity (in BTUs) needed to efficiently heat or cool a space. Proper sizing is crucial for energy efficiency, comfort, and system longevity.

2. How Does the Calculator Work?

The calculator uses the standard sizing formula:

Where:

• \( Area \) — Square footage of the space (sq ft)
• \( Factor \) — BTU per square foot (typically 20-40 BTU/sq ft)
• \( Insulation\ Adjustment \) — Multiplier based on insulation quality (0.8-1.2)

Explanation: The calculation accounts for space size, climate factor, and insulation quality to determine the optimal heat pump capacity.

3. Importance of Proper Sizing

Details: An oversized unit will short-cycle (turn on/off frequently), reducing efficiency and lifespan. An undersized unit will run constantly, struggling to maintain temperature.

4. Using the Calculator

Tips: Measure your space accurately. Choose higher BTU factors for colder climates. Select insulation quality honestly for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical BTU factor range?
A: 20-40 BTU/sq ft. Use 20-25 for warm climates, 30-35 for moderate, and 35-40 for cold climates.

Q2: How do I assess my insulation?
A: Poor insulation = drafty, uneven temps. Good insulation = consistent temps, low energy bills.

Q3: Should I round up the BTU result?
A: Choose the nearest standard size (typically in 6,000 BTU increments), but don't oversize by more than 15%.

Q4: What about ceiling height?
A: For ceilings over 8 ft, add 10% BTU for each additional foot.

Q5: Does window count matter?
A: Yes, add 1,000 BTU for each window if they're not energy efficient.