Water heaters

Apply for product acceptance

This information is for manufacturers, ACPs and other applicants. It details how to apply for water heater acceptance. 

If accepted, we add your product to our public list. This means you can install it to get energy savings and create certificates. 

Technical requirements

All heat pumps must comply with relevant testing, energy efficiency, and safety standards.

Typically, you submit the following evidence to meet our requirements: 

  • TRNSYS model and modelling reports (modelled in accordance with AS/NZS 4234:2021)
  • AS/NZS 2712 accreditation certificates
  • user manuals
  • test reports and other product performance evidence, including tanks and collectors (as required)
  • pump and controller specifications
  • system schematic and bill of materials
  • dimensioned tank diagram
  • data plate(s) photographs
  • application declaration forms.

Before you apply, we recommend you review the relevant application guide to understand the technical requirements under that calculation method. See the Relevant documentation section below.

Install multiple heat pumps (IHEAB Only)

Install identical heat pumps

You can install multiple identical units of any heat pump listed on the Accepted Products List under the IHEAB method. 

The resulting group of heat pumps must meet the following criteria: 

  • each individual heat pump is accepted for use in Activity Definitions F16, F17
  • the individual units are identical models
  • they are joined in parallel
  • they have balanced water flow to each unit.

If the group of heat pumps meet these requirements, you do not need to apply for acceptance separately. Refer to Notice 03/2023 for more information.

Install different heat pumps

If you plan to install several different models of heat pumps in parallel or series, you must apply for acceptance for each specific combination. 

Products must always be modelled how you intend to install them. 

You can only use one-for-one water heater replacements under the HEER method.

Activity Definitions D17 and D19 for heat pumps don’t allow replacements with more than 1 heat pump. 

Ineligible water heaters

Heat pumps for PDRS are suspended

PDRS Activity Definition WH1 (Replace One or More Existing Hot Water Boilers or Water Heaters with One or More Air Source Heat Pump Water Heater Systems) is suspended from 19 December 2024 until further notice. See the PDRS Rule page for details. 

We will process any applications lodged in the VEU registry before 19 December 2024 for acceptance for use under WH1. However, we will not process any new applications until further notice.

Duplicates cannot be submitted

You cannot apply for duplicate models in TESSA. The system will automatically reject your application.

We do not process products that are already accepted. For example, if your product was already accepted under an earlier version of AS/NZS 4234, we will not accept a new application with different values.

However, if your product requires acceptance across different calculation methods, please contact our team to discuss the next steps.

Please note that there are different requirements and values to submit for HEER and IHEAB calculation methods. These cannot be submitted jointly.

Enquiries

Email your product enquiries to our Product Applications Team.

A document page
Relevant documentation