Heat Pump Size Calculator
Find the perfect heat pump capacity for your space. Our calculator considers room size, insulation, and NZ climate conditions.
Heat Pump Sizing Guide
Small Rooms (2.5kW)
- Bedrooms up to 20m²
- Small offices/studies
- Well-insulated spaces
Medium Rooms (3.5kW)
- Living rooms 20-35m²
- Master bedrooms
- Kitchen/dining areas
Large Rooms (5.0kW+)
- Open plan living 35-50m²
- High ceilings
- Poor insulation
Multi-Zone (6.0kW+)
- Whole home heating
- Multiple rooms
- Commercial spaces
Frequently Asked Questions
How do I measure my room for a heat pump?
Measure length × width × height in meters. Consider ceiling height, windows, insulation quality, and whether it's an open plan space.
What happens if I choose the wrong size?
Too small = insufficient heating/cooling. Too large = higher costs and inefficient operation. Proper sizing is crucial for efficiency.
Should I oversize for future room additions?
Generally no. It's better to size for current needs. Oversized units cycle on/off frequently, reducing efficiency and comfort.