Energy Assessments
EPCs and all-in-one residential surveying
Nine assessment, testing and calculation services under one roof, accredited to deliver PAS 2035-compliant retrofit assessments for single homes and whole portfolios across England.
Assessments we carry out
EPCs
Accredited Energy Performance Certificates rating a property's energy efficiency for sales, lettings and compliance.
Retrofit assessments
PAS 2035 whole-property assessments of fabric, services and condition, used to plan safe and effective retrofit measures.
Pulse air tightness testing
Low-pressure Pulse testing that measures uncontrolled air leakage so heat loss can be quantified and reduced.
Blower door air tightness testing
Fan pressurisation testing to Part L standards, measuring building leakage rates and locating the exact draught paths.
Background ventilation surveys
Part F ventilation checks of trickle vents, extract fans and flow rates, confirming homes ventilate safely after upgrades.
Retrofit coordination
PAS 2035 coordination of the whole project, from assessment and design through installation to final handover evidence.
U value calculations
Element by element heat loss calculations for walls, roofs and floors, confirming build-ups meet regulation targets.
OCDEA assessments
OCDEA modelling for new-build homes, producing compliance reports and final EPCs at design and as-built stage.
Overheating calculations
Part O and TM59 overheating risk analysis, showing how solar gains and ventilation keep homes comfortable.
How No C, No Fee works
Following an initial review, Atlas Energy will confirm whether your property can be accepted into our No C, No Fee service. We will assess the property and provide a written improvement strategy designed to achieve an EPC rating of C. Once the agreed improvement works have been completed as specified, a new EPC assessment will establish the property's final rating. If the property still does not achieve an EPC rating of C, Atlas Energy will waive or refund the assessment fee.
Terms and conditions apply.
EPC rating
No C, No Fee
- 01
Property review
Atlas Energy confirms whether the property can be accepted into the service.
- 02
Assessment
We assess the property's current energy performance.
- 03
Improvement plan
We agree the measures intended to achieve an EPC rating of C.
- 04
Works completed
The agreed improvements are carried out as specified.
- 05
Final EPC
If the property remains below C, the assessment fee is waived or refunded.