1. What is the Healthy Homes Heating Calculator?

Definition: This calculator determines the minimum required heating capacity for a dwelling according to New Zealand's Healthy Homes Standards.

Purpose: It helps landlords, homeowners, and property managers comply with NZ heating requirements for rental properties.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Capacity — Required heating output in kilowatts (kW)
• Floor Area — Living area of the dwelling in square meters (m²)
• 0.12 — The heating factor specified in NZ Healthy Homes Standards

Explanation: The standard requires fixed heating devices capable of maintaining 18°C in the main living area, calculated as 1.2 kW per 10 m².

3. Importance of Heating Capacity Calculation

Details: Proper heating capacity ensures compliance with NZ rental property standards, tenant comfort, and energy efficiency.

4. Using the Calculator

Tips: Enter the total floor area (m²) of the living space. The calculator will determine the minimum required heating capacity in kW.

5. Frequently Asked Questions (FAQ)

Q1: What areas should be included in the floor area?
A: Include all living areas (living room, dining, kitchen, bedrooms) but exclude bathrooms, hallways, and storage areas.

Q2: Does this apply to all of New Zealand?
A: Yes, the 0.12 kW/m² standard applies nationwide, though some regions may need additional heating for colder climates.

Q3: What types of heaters comply with these standards?
A: Fixed heaters like heat pumps, wood burners, flued gas heaters, or electric heaters that meet the kW requirement.

Q4: How is ceiling height factored in?
A: The standard assumes typical ceiling heights (2.4m-2.7m). For higher ceilings, additional capacity may be needed.

Q5: When did these standards come into effect?
A: The Healthy Homes Standards became mandatory for all rental properties from July 1, 2021.