1. What is an Air Source Heat Pump Cost Calculator?

Definition: This calculator estimates the running cost of an air source heat pump based on heat output, coefficient of performance, and electricity cost.

Purpose: It helps homeowners and HVAC professionals estimate operating costs for heat pump systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C \) — Running cost ($ per hour)
• \( Q \) — Heat output (BTU/h)
• \( COP \) — Coefficient of performance (typically 3–5)
• \( P_{kwh} \) — Electricity cost ($ per kWh)

Explanation: The heat output is divided by COP to get electrical input, then multiplied by electricity cost to get running cost.

3. Importance of Heat Pump Cost Calculation

Details: Accurate cost estimation helps in budgeting, comparing systems, and understanding energy efficiency benefits.

4. Using the Calculator

Tips: Enter the heat pump's heat output in BTU/h, its COP (default 3.5), and your electricity cost (default $0.15/kWh). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical COP value?
A: Most air source heat pumps have COP between 3-5, with higher values indicating better efficiency.

Q2: How do I find my heat pump's heat output?
A: Check the manufacturer's specifications or nameplate on your unit.

Q3: Does this include installation or maintenance costs?
A: No, this only calculates the running cost based on energy consumption.

Q4: Why convert BTU to kWh in the calculation?
A: Electricity is billed per kWh, so we need to convert the heat output to equivalent electrical input.

Q5: How can I reduce my heat pump running costs?
A: Improve insulation, maintain your system, and consider a heat pump with higher COP.