1. What is a House Size Heat Pump Sizing Calculator?

Definition: This calculator estimates the required heat pump capacity based on house area, heating factor, and coefficient of performance (COP).

Purpose: It helps homeowners and HVAC professionals determine the appropriate heat pump size for efficient heating.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{Size} \) — Required heat pump capacity (kW)
• \( \text{House Area} \) — Total floor area (m²)
• \( \text{Factor} \) — Heating load per square meter (kW/m²)
• \( \text{COP} \) — Coefficient of Performance (dimensionless)

Explanation: The house area multiplied by heating factor gives the heating load, which is then divided by COP to account for heat pump efficiency.

3. Importance of Proper Heat Pump Sizing

Details: Correct sizing ensures energy efficiency, proper heating capacity, and prevents short cycling or insufficient heating.

4. Using the Calculator

Tips: Enter the house area in square meters, heating factor (default 0.1 kW/m²), and COP (default 3.5). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical heating factor value?
A: For well-insulated homes, 0.08-0.1 kW/m² is common. Poor insulation may require 0.12-0.15 kW/m².

Q2: How do I determine the COP?
A: Check manufacturer specifications. Modern heat pumps typically have COPs between 3.0-4.0.

Q3: Should I adjust for climate?
A: Yes, colder climates may need a higher factor. Consult an HVAC professional for climate-specific adjustments.

Q4: Does this include domestic hot water?
A: No, this calculates space heating only. Add 1-2 kW if the heat pump will also provide hot water.

Q5: How accurate is this calculation?
A: This provides a rough estimate. For precise sizing, conduct a Manual J calculation or consult an HVAC professional.