1. What is Heat Pump Sizing?

Heat pump sizing involves determining the appropriate capacity (measured in BTUs or tons) needed to efficiently heat and cool a space based on square footage, climate, and insulation factors. Yard size is not directly relevant to heat pump sizing calculations.

2. How Does the Calculator Work?

The calculator uses square footage multiplied by BTU factors based on:

Where:

• Square Footage — Area to be heated/cooled
• Climate Factor — BTU per sq ft based on regional climate
• Insulation Factor — Adjustment for insulation quality

Note: 12,000 BTU = 1 ton of cooling capacity

3. Importance of Proper Sizing

Details: Correct sizing ensures energy efficiency, proper dehumidification, and system longevity. Oversized units short-cycle, while undersized units run constantly.

4. Using the Calculator

Tips: Measure your home's square footage (excluding garages), select your climate zone, and rate your insulation quality for best results.

5. Frequently Asked Questions (FAQ)

Q1: Why isn't yard size used in calculations?
A: Heat pumps condition indoor air; yard size doesn't affect heating/cooling loads. Only conditioned space matters.

Q2: What's the average BTU per square foot?
A: Typically 20-45 BTU/sq ft depending on climate and insulation. Hot climates need less, cold climates need more.

Q3: Should I get the exact size recommended?
A: Consult an HVAC professional. Other factors (windows, ceiling height, etc.) may require adjustments.

Q4: What about multi-zone systems?
A: This calculator provides whole-house estimates. Multi-zone systems require room-by-room calculations.

Q5: How accurate is this estimate?
A: It's a general guideline. Manual J calculations by professionals provide precise sizing.