Domestic Energy Assessor +
Retrofit Assessor Training

Access discounted training, industry-standard certifications, and employment support to kickstart your career as an Assessor.
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Register for Promo Code

About this training

Self-paced
Discounted Training
Online
No experience required
Accredited certifications

Greenworkx has partnered with Energy Trust to offer a major discount on Domestic Energy Assessor and Retrofit Assessor training. Thanks to funding from the Warm Home Skills Programme – plus an exclusive discount for Greenworkx registrants – you can access a combined 70% discount on your training. This includes a pathway to industry-standard Domestic Energy Assessor and Retrofit Assessor certifications, as well as employment support to kickstart your career.

The Steps

  1. Use the Register for Promo Code button to register with Greenworkx and receive your DEA + RA training promotional code.
  2. Visit Energy Trust to select your preferred Domestic Energy Assessor + Retrofit Assessor training dates, and apply the promotional code at checkout.
  3. Start your training and receive ongoing updates from Greenworkx about employment opportunities, job-search support, and more.

What our learners say


Greenworkx have supported every aspect of this training, right from the beginning to the end, even putting forward job vacancies.
David Pethick
Energy & Retrofit Advisor
"The best part of the academy is the support… We’ve helped each other through it. And I’ve now been able to set up my own freelance company as a DEA Assessor."
Vicky
DEA Academy graduate
"I would definitely recommend the DEA Academy. There are great training arrangements and support so you’re not doing it all alone, and there’s an outcome - they’ll help you look for work!"
Simon
DEA Academy graduate
"It’s a real confidence building experience for anyone who’s thinking of becoming a Domestic Energy Assessor… Greenworkx have supported every aspect of this training, right from the beginning to the end"
David
DEA Academy graduate

What our employers say

Hear from Cian O’flathabhain, Head of Retrofit at CCS, about why he comes to Greenworkx for new retrofit talent.
Working with Greenworkx has made it much easier to find the right candidates. They put ready-made candidates in front of us, so we could pick the best ones for the opportunity.
Cian O’flathabhain
Head of Retrofit at CCS

Frequently asked questions

What kind of person makes a good DEA or RA?
  1. You are passionate about sustainability, and particuarly interested in energy efficiency in the built environment.
  2. You're a people person with good communication skills, who enjoys meeting knew customers and keeping them informed.
  3. You have good attention to detail and organisational skills, that you can apply when gathering building data and creating reports.
  4. You are someone with strong analytical thinking skills, ready to problem-solve.
  5. You are comfortable working at pace with autonomy, and working in different settings and environments.
What do assessors actually do?

Domestic Energy Assessors visit homes to assess their energy efficiency and produce Energy Performance Certificates (EPCs), which rate properties from A to G and suggest basic improvements.

Retrofit Assessors build on this work by conducting more detailed evaluations required for government-backed retrofit projects to improve energy efficiency, including occupancy patterns, building condition, and ventilation risks. Their assessments inform a tailored, whole-house retrofit plan – in line with PAS 2035 retrofit standards.

What does a typical day in the life of an energy or retrofit assessor look like?

A typical day for a Domestic Energy Assessor or Retrofit Assessor blends property visits with meaningful impact. After reviewing building details and prepping for the day, they travel to homes to carry out assessments – inspecting insulation, heating, and ventilation systems. On site, they collect evidence, create floorplans, and input data into specialist software. Back at their desk, they finalise reports and produce Energy Performance Certificates or retrofit recommendations. Their work directly helps households save energy, reduce costs, and improve comfort.

Will I get a job if I do the course?

While this training does not guarantee direct employment, Greenworkx will support you by matching you with suitable job opportunities during and after your training, as well as providing guidance to enhance your job search.

Who is the awarding body for the qualification?

The qualifications earned through this training are accredited by the Awarding Body of the Build Environment (ABBE). They quality assure and certify the qualifications.

Start your assessor journey.

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