Videos

Videos

Short videos from our energy assessors: why new homes fail Part O, how EPCs and Display Energy Certificates work, and what we check on site. Newest first. We add new videos from our YouTube, Facebook and Instagram channels every week.

The EPC and DEC series were first published in 2012 and 2013. The basics still hold. For the latest rules, see our industry updates.

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October 2026: 3 reasons new homes fail Part O (and how to fix them)

Too much glass on one side, no cross-ventilation, and bedroom windows that can't stay open at night because of noise. Related: our full guide and Part O overheating assessments. Watch on YouTube.

March 2013: EPC recommendations to improve a building's energy efficiency. Part 5 of 5

What the recommendations on an EPC mean, and the rating the building could reach if they are carried out. Related: EPC B upgrade plans. Watch on YouTube.

March 2013: What we check for an Energy Performance Certificate (EPC). Part 4 of 5

Walls, roof, floor, glazing, heating, hot water, controls, lighting and renewables: what we record on site, and why more evidence means a fairer rating. Related: SAP calculations and EPCs and commercial EPCs. Watch on YouTube.

March 2013: Commercial Energy Performance Certificates (EPC) explained. Part 3 of 5

How commercial EPCs are produced with SBEM, and what the rating means when you let a building. Related: commercial EPCs and SBEM calculations. Watch on YouTube.

March 2013: Domestic Energy Performance Certificates (EPC) explained. Part 2 of 5

EPCs for houses and flats, and how new builds and conversions get theirs from the SAP calculation. Related: SAP calculations and EPCs. Watch on YouTube.

February 2013: What is an Energy Performance Certificate (EPC)? Part 1 of 5

What an EPC is, the A to G scale, and when a building needs one. Related: SAP calculations and EPCs and commercial EPCs. Watch on YouTube.

October 2012: Display Energy Certificates (DEC) explained. Part 5 of 5

The last part of our DEC series. Related: Display Energy Certificates. Watch on YouTube.

October 2012: Display Energy Certificates (DEC) explained. Part 4 of 5

Part 4 of our DEC series. Related: Display Energy Certificates. Watch on YouTube.

October 2012: Display Energy Certificates (DEC) explained. Part 3 of 5

Part 3 of our DEC series. Related: Display Energy Certificates. Watch on YouTube.

October 2012: Display Energy Certificates (DEC) explained. Part 2 of 5

Part 2 of our DEC series. Related: Display Energy Certificates. Watch on YouTube.

October 2012: Display Energy Certificates (DEC) explained. Part 1 of 5

Part 1 of our DEC series. Related: Display Energy Certificates. Watch on YouTube.

October 2012: Display Energy Certificates (DEC): introduction

What a DEC shows: the actual energy use of a public building, and which buildings need one. Related: Display Energy Certificates. Watch on YouTube.

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