The Dwelling Energy Assessment Procedure is Ireland's official method for calculating the Building Energy Rating of new and existing dwellings.
Dwelling Energy Assessment Procedure (DEAP) is a software and manual which calculates energy consumption and carbon dioxide emissions. It considers space heating, ventilation, water heating, and lighting in a dwelling. DEAP is free to download but be sure to view the terms and conditions below before downloading.
DEAP is used by registered BER Assessors to calculate the BER of new and existing dwellings and to demonstrate compliance with aspects of the Building Regulations. You can learn how to use DEAP by undertaking a training course and registering as a BER assessor.
Launch of DEAP4
The launch of the new DEAP4 software has commenced, with access being given to assessors in a phased manner over the coming weeks. This new web-based technology will enable greater scope for future developments benefiting both assessors and homeowners.
There will be a transition period when both DEAP4 and DEAP3 will operate simultaneously. The goal here is to reduce any disruption to the BER assessor community. DEAP3 will remain available to download until the end of the transition period. It will also be possible to publish from DEAP3 to the National Administrative System (NAS) during this time. Support for DEAP3 will end when DEAP4 has been rolled out.
If you are not a registered BER Assessor, but use DEAP3 for purposes other than the production of a BER, please register your details with our helpdesk and we will include you in all future communications relating to the roll out of DEAP4.
DEAP tools and information
Introduction to DEAP
This document describes the principles of DEAP for those involved in the research, design, construction or retrofit of dwellings. It is also useful for anyone wishing to understand the technical basis for BER certificates and Advisory Reports.
The tool below is a calculator that accepts inputs from DEAP and the heat pump system designer/installer, and then produces outputs to include in DEAP.
The methodology to assess heat pumps in DEAP was updated based on the Ecodesign (2009/125/EC) and Labelling (2010/30/EU) European directives. The guidance here supersedes Appendix G of DEAP Manual (v3.2.1) - July 2012.
The sign off form is be completed by the heating system designer/installer for the dwelling being assessed.
DEAP Survey (v2.1) - January 2012
This guidance and survey form is designed to assist BER Assessors record the survey information necessary for input into the DEAP software.
Solar Space Heating - Group Systems
This guidance and calculator helps BER assessors determine the solar contribution from a group solar space heating system that applies to an individual dwelling linked to that system.
Solar Space Heating - Individual Systems
This guidance and calculator helps BER assessors account for the contribution of active solar thermal systems to both domestic hot water and space heating requirements of a dwelling.
This guidance and application helps BER assessors to calculate a non-default Thermal Bridging Factor for use in DEAP.
- DEAP Electricity Factors provides current and historical electricity primary energy and carbon dioxide factors for inclusion in DEAP calculations.
- Domestic Fuel Cost Comparison provides information on the comparison of energy costs and the comparison of useful energy costs for space heating.
- National BER Research Tool gives researchers access to statistical data from the BER scheme.
- Domestic BER Statistics are updated monthly and show the total number of BERs published in Ireland.
- Request for SEAI Property Reference Number
- Direct Debit Mandate
- BER Insurance Form
- BER Domestic Assessor Videos
We recommend that you consult the DEAP Technical Bulletins before contacting us.