NatHERS Assessment

Nationwide House Energy Rating Scheme (Australia)

NatHERS Assessments – Boosting Energy Efficiency in Aussie Homes

Transform your home’s comfort and savings with a NatHERS assessment, Australia’s official energy rating system for residential buildings. Whether you’re building, renovating, or upgrading, NatHERS helps you design, certify, and improve homes to be warmer, cooler, and far more energy-smart.

What is NatHERS?

The Nationwide House Energy Rating Scheme (NatHERS) rates Australian homes by awarding a score out of 10 stars, based on hundreds of factors:

  • Home construction, insulation, design, and material choices
  • Local climate, terrain, exposure, and orientation
  • Walls, floors, windows, ceilings, and roofs
  • Shading, eaves, and major fixed appliances

A higher star rating means lower energy bills and better comfort all year round. NatHERS supports Australia’s energy transition, helping reduce emissions and achieve targets for net zero by 2050.

NatHERS Assessment Benefits

  • Reduces heating/cooling costs, saves money for years
  • Delivers a more comfortable, healthy living environment
  • Supports environmental goals and lower carbon footprint
  • Streamlines compliance for building applications and renovations
  • Opens opportunities for finance, rebates, and energy upgrades
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New Build Assessment

Why is NatHERS Compliance Important?

  • Building Code Compliance: NatHERS is the benchmark for meeting the National Construction Code (NCC) energy efficiency requirements. New homes must achieve at least 7 stars on the NatHERS scale as of NCC 2022 updates.
  • Renovations and Extensions: Homes undergoing significant upgrades or additions must also meet NatHERS standards for compliance and permit approvals.
  • Existing Homes: NatHERS expansion allows rating for existing homes, giving Australian households practical advice on upgrades that can cut energy bills and boost comfort.
  • Finance and Green Loans: Banks increasingly use NatHERS ratings to verify green lending and provide finance for home energy upgrades.

What Does a NatHERS Star Rating Mean?

  • 0 stars: No insulation or protection from external temperatures
  • 6–7 stars: Minimum for new homes; much greater energy savings and comfort
  • 8–10 stars: Highest efficiency, lowest energy bills, ideal living conditions
  • Every extra star can save up to 25–30% on energy spending each year.

Who Needs a NatHERS Assessment?

  • Builders, architects, and designers: To certify plans meet compliance and get building permits.
  • Homeowners (new builds or renovations): To achieve top comfort, meet legal requirements, and increase resale value.
  • Existing homes: To identify upgrade opportunities, access green finance, and future-proof energy performance.

NatHERS Assessment Process – What to Expect

Step-by-Step Overview

Design & Documentation Review
  • Assessor collects plans, specifications, and design details for your home.
  • Factors considered include room sizes, insulation levels, window specs, and building orientation.
Thermal Performance Simulation
  • Accredited software simulates year-round heating/cooling needs using the Chenath engine.
  • Evaluates how well your home stays comfortable naturally, saving on artificial heating/cooling.
Whole of Home Assessment
  • Assessor examines energy use from fixed appliances (heating/cooling, hot water, lighting, solar generation).
  • Provides a performance rating from 0 to 100 or higher (for net-positive energy homes).
Suggestion & Reporting
  • Recommendations for improving design or retrofit are provided, aiming for higher star ratings.
  • You’ll receive a detailed NatHERS certificate with your home’s score, key findings, and actionable advice.
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Book Your NatHERS Assessment Today

Talk to the local experts at Home Energy Rating Australia. Our accredited assessors guide you through every step—tailoring advice for your local climate, building style, and energy needs.

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The Benefits of Energy Efficiency

Energy Assessment

50M+

Reduce energy consumption across millions of Australian homes through comprehensive thermal performance assessments and targeted insulation upgrades that improve comfort year-round.

100M+

Lower annual heating and cooling costs by up to 40% for homeowners who implement NatHERS assessment recommendations, including ceiling insulation, underfloor retrofits, and heat pump installations.

Home Energy Compliance

30%

Average reduction in energy bills achieved when homeowners follow NatHERS assessment recommendations, with ceiling insulation upgrades (R4.0-R6.0) delivering the most significant immediate savings.

Energy Efficiency

60+

Certified NatHERS assessors and energy compliance specialists available nationwide to conduct thermal performance evaluations, EE-04 compliance checks, and heat pump pre-assessments for rebate eligibility.

0402 159 252