Heating Standard for New Zealand Homes
The World Health Organization (WHO) recommends a minimum indoor temperature of 18˚C. Having a heater that can reach this temperature on the coldest days of the year in New Zealand is critical to meeting heating standards. Landlords must provide one or more fixed heaters that can directly heat the main living room. The heater must be an acceptable type and must meet the minimum heating capacity required for your living room.
You can find out the heating capacity required for a room through an online Heating Assessment Tool that can calculate your heating requirements. Private rental property must comply within 90 days of any new or renewed tenancy after 1 July 2021, with all private rentals complying by 1 July 2024.
What is the heating standard?
You can use our online heating assessment tool to help calculate the minimum heating capacity required for heaters in your rental property. The heating standard includes having a fixed heater(s) that can directly heat the largest room that is used for general, everyday living – for example, a lounge, family room or dining room.
You don’t need to add more heating if you have one or more existing heaters that:
- were installed before 1 July 2019
- each have a heating capacity greater than 2.4kW
- meet the requirements in the standards (for example, not an open fire or an unflued combustion heater)
- are not electric heaters (if the required heating capacity for the main living room is over 2.4 kW), and
- have a total heating capacity that’s at least 90% of what you need to meet the required heating capacity.
If you’re adding a new heater to a room with existing heating, each heater must meet the requirements in the healthy homes standards, with one exception. If your existing heating doesn’t have the required heating capacity, you can add a smaller fixed electric heater to ‘top up’ your heating.
For example, if you have a heat pump with a heating capacity of 3.3 kW, but you need a total heating capacity of 4.5 kW, you can add a fixed 1.5 kW electric heater with a thermostat to meet the standard.
How to find out what size heater you need
You can use our online heating assessment tool to help calculate the minimum heating capacity required for heaters in your rental property. The tool provides a report that sets out the minimum heating capacity required for each property. You can use it to check if your current heating is sufficient to meet the Healthy Homes Standard, or if you need to install a new heater. The report can also help prove a rental home meets the heating requirements in the healthy homes standards.
If you have a complex room layout, or you’re not sure what figures to include, we recommend asking a professional for advice.