Our Services

Comprehensive energy compliance solutions for residential and commercial properties across Northern Ireland.

Energy Performance Certificate

Energy Performance Certificates (EPCs)

Required by law every time a property is sold or rented. Rates energy efficiency from A (most efficient) to G (least efficient), valid for 10 years. EPCNI has lodged over 100,000 EPCs — more than any other firm in Northern Ireland.


  • Residential & commercial properties
  • Fast turnaround, fully accredited lodgement
  • Valid for 10 years
SAP and SBEM energy assessment

SAP & SBEM Assessments

Government-approved calculation methods to demonstrate new build compliance with Building Regulations Technical Booklets F1 & F2. SAP covers residential properties; SBEM covers all non-domestic new builds.


  • Design stage and as-built assessments
  • Full compliance certification
  • Planning & building control submissions
Air pressure test

Air Permeability / Pressure Tests

Using a calibrated fan in a portable door screen, our surveyor measures your building's airtightness Q value. This forms part of Technical Booklet F1 & F2 compliance and is required for most new build properties.


  • Blower door pressure testing
  • Q value certification
  • Diagnostic use in existing buildings
Display Energy Certificate public building

Display Energy Certificates (DECs)

Prominent A4 certificates legally required at the entrance of all public sector buildings with over 250m² of usable floor area visited by the public. EPCNI has completed over 10,000 DECs.


  • Schools, hospitals, council buildings
  • Annual & 7-year renewals
  • Advisory Report included
Thermal imaging survey

Infrared Thermal Imaging

Specialist thermal cameras produce detailed infrared images identifying hidden problems: heat loss, cold bridging, moisture ingress and structural defects invisible to the naked eye. Full written report provided.


  • Heat loss & insulation defects
  • Moisture and water ingress
  • Electrical fault detection
Energy audit

ESOS Assessments & Energy Audits

Mandatory assessments for large UK organisations. We identify energy saving opportunities across buildings, transport and industrial processes. We also provide holistic energy audits for any size organisation.


  • ESOS Phase compliance
  • Lead assessor reports
  • Actionable energy saving recommendations
Air conditioning inspection

Air Condition Inspections (ACIs / ACRs)

We inspect and report on the energy efficiency of air conditioning systems across all property types. Required for systems with an effective rated output of more than 12kW.


  • ACI & ACR certification
  • All commercial property types
  • Efficiency improvement advice
Book Inspection
Leak detection

Acoustic & Gas Leak Detection

Inert gas and acoustic leak detection, trace and repair services. We locate hidden leaks quickly and efficiently, minimising disruption to your property with non-invasive detection methods.


  • Non-invasive detection methods
  • Trace and repair service
  • Residential & commercial
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Damp survey

Damp & Timber Surveys

Specialist surveys identifying damp penetration, rising damp, condensation and timber defects including rot and woodworm. Full written report with recommendations provided after every survey.


  • Rising & penetrating damp
  • Timber rot and woodworm
  • Full written report included
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Ready to Book Your Assessment?

Contact Northern Ireland's most experienced energy compliance team today.