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
Domestic Energy Assessor — Start Stop — Guided Online Learning
Fully online, self-paced Level 3 DEA course. Schedule video or audio calls with your tutor whenever you need them.
Domestic Energy Assessor 3 Day Online Course (Live Session)
Live tutor-led Level 3 DEA training delivered over 3 consecutive days via Microsoft Teams.
Domestic Energy Assessor Weekend 2 Day Fast Track (Live Session)
Two-day weekend fast-track Level 3 DEA course — live online via Zoom for busy professionals.
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 course materials and assessment
- Real-world tips, not just exam-pass content
- Lifetime tutor support after qualification
- 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
How long does the DEA course take?+
The classroom course is 5 days, plus your own pace for the portfolio (typically 2–4 weeks).
Do I need prior experience?+
No prior experience required. You need good literacy/numeracy and basic IT skills.
Can I pay in instalments?+
Yes — interest-free instalments available at checkout. No credit checks.
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.