Build Your Career inEnergy Assessment & Building Compliance
City & Guilds approved training in Domestic EPCs, Retrofit, SAP, Non-Domestic Energy Assessment and more. Flexible learning. Expert tutors. Real-world support.
Featured Courses
Our most popular Energy Assessor qualifications

Self-Paced Domestic Energy Assessor Course | Guided Online Level 3 DEA Training

3-Day Online Domestic Energy Assessor Course | Live Level 3 DEA Training

2-Day Weekend Domestic Energy Assessor Course | Live Online Level 3 DEA Training
Upcoming Course Dates
Live availability across all our courses

Why Choose Ozone Training
We're working Energy Assessors who train new assessors — not a generic training company.
- Run by practising DEAs since 2011
- City & Guilds approved courses
- Real-world tips, not just exam-pass content
- Spread cost in interest-free instalments
- 100% pass guarantee with free re-sits
What Our Learners Say
Real reviews from our Google profile
Frequently Asked Questions
Will you help me secure work after I qualify?+
Yes. While we cannot guarantee employment, we're committed to helping you take the next step in your career after you qualify.
Our tutors and team will provide guidance on becoming a working Energy Assessor, including choosing an accreditation scheme, selecting equipment, understanding the EPC process and getting started in the industry.
We'll also share advice on the different ways you can find work, whether that's working for an established EPC company, estate agent, housing association, local authority or building consultancy, or becoming self-employed and building your own client base.
As part of our ongoing support, we regularly receive enquiries from companies looking for qualified Energy Assessors. Wherever possible, we're happy to introduce our successful learners to employers and businesses looking to recruit. We also provide guidance on setting up your own business, marketing your services and growing your client base if you choose to work independently.
Our goal is not only to help you gain your qualification, but also to give you the knowledge, confidence and support to build a successful career as a Domestic Energy Assessor.
What is the process from enrolling on the course to receiving my qualification?+
We've designed our training process to be straightforward and supportive, guiding you from enrolment through to becoming a qualified Energy Assessor.
First, you'll complete your chosen training course. This may be through Classroom Training, Online Live Training or Self-Study (Start Stop Learning), depending on the option you've selected.
After your training, you'll complete the required assignments and portfolio as part of your qualification. Your dedicated tutor will review each submission and provide feedback if any amendments are needed. Once an assignment meets the required standard, it will be signed off by your tutor.
When all of your assignments have been successfully completed and signed off, your portfolio is passed to our Internal Quality Assurer (IQA). The IQA carries out quality assurance checks to ensure your work meets the awarding body's requirements and that the assessment process has been completed correctly.
Once the IQA has completed the quality assurance process and your portfolio has been fully signed off, your qualification is claimed from the awarding organisation. Your certificate is typically issued within two weeks of the final sign-off.
Throughout the entire process, our tutors are available to support you, answer your questions and help you progress towards successfully achieving your qualification.
Do I need prior experience?+
Ready to start your DEA career?
Speak to our team or book your course today. We'll guide you from enrolment to your first paid EPC.
