- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 24 Jan 2022
BREEAM NOx emissions
 When to consider
 Stage 2
Mechanical Engineer calculates that their concept achieves credits. They tell BREEAM assessor to target 3 credits. This should then gets written into the ERs, ideally in an M&E document and in a BREEAM document.
 Stage 3
Mechanical Engineer doing Stage 3 design should calculate their design still achieves 3 credits. This may be the contractor's engineer, or could still be the client side engineer, depending on how the project is being tendered.
 Stage 4
The technical submission to the client team regarding the design change, the POL 02 credits should have been recalculated by the contractor side mechanical engineer and approved by the client side engineer,
 Stage 5
The contractor's Mechanical Sub Contractor should submit a technical submittal for the kit they propose is procured including updated POL 02 calculations. The AP and/or M&E designers should approve the technical submittal having checked the proposed kit meets POL 02 (among other) requirements.
 Questions to ask while seeking compliance
Be wary under BREEAM UK New Construction as the NOx emissions for electric heating are so high, that a couple of electric heaters (over the door? small quantity of office areas in an otherwise unheated building?) can make it nearly impossible to achieve many credits.
DHW heating can be excluded from the calculation where designer can demonstrate it is less than 10% of the building's total energy consumption (e.g. via Building's Energy Performance Certificate). Point of use water heaters are excluded by default.
The reason to ask this is because the NOx for the CHP system will have to be calculated separately, and under BREEAM 2014 UK New Construction schemes and earlier, the methodology is very favourable to CHP leading to more available credits. Note: under BREEAM 2018 UK New Construction this is not the case.
 Tips and best practice
District heating system:
For project connected to the district heating system which is not under the developer's control and mandated by a local authority (or other statutory body) maximum number of credits to be awarded. Where this is not mandatory the NOx emissions calculation to be provided. (see KBCN0979) Where a district heating system also generates electricity, this can be used to off-set NOx emissions from grid electricity, the calculation methodology for CHP systems can be used. (see KBCN0857)
 Typical evidence
Typical design stage evidence may include:
- Boiler/CHP/Heat Emitter/Cooling/Heater schedules
- Drawings showing quantity of each item of heating/hot water/cooling equipment
- Datasheets and/or manufacturer emails confirming NOx emissions for each piece of equipment
- Letter or calculation sheet (be careful that a calc sheet is robust - signed? dated?) calculating the NOx emissions for the development.
 Applicable Schemes
The guidelines collated in this ISD aim to support sustainable best practice in the topic described. This issue may apply in multiple BREEAM schemes covering different stages in the life of a building, different building types and different year versions. Some content may be generic but scheme nuances should also be taken into account. Refer to the comments below and related articles to this one to understand these nuances. See this document for further guidelines.
- UK New Construction 2014
 Find out more
--Sandra Turcaniova 15:11, 03 Jan 2018 (BST)
- Air Quality Taskforce.
- Air quality.
- At a glance - Indoor air quality.
- BREEAM and air quality.
- BREEAM Indoor air quality plan.
- BREEAM Indoor air quality Ventilation.
- BREEAM Indoor pollutants VOCs.
- Bringing a breath of fresh air to the design of indoor environments.
- BSRIA responds to UK Air Pollution Report.
- Ensuring good indoor air quality in buildings.
- Fresh air.
- High pollution location.
- Indoor air quality.
- Indoor environmental quality.
- Locating ventilation inlets to reduce ingress of external pollutants into buildings: A new methodology IP 9 14.
- Sources of external pollution.
- Ultra Low Emission Zone.
Featured articles and news
And CIOB's response.
Presidential update from CIAT's Eddie Weir PCIAT.
Rates freeze, NI cuts, full expensing; early election?
Could this be a remedy for condensation, damp or mould?
Unlocking a Healthier Tomorrow
Call for ministerial group and National Retrofit Delivery Plan.
The Great Transformation 1860–1920. Book review.
Including the devolved governments, CIOB, ECA, APM and IHBC.
AT awards small to medium size project category winner.
Formal and informal adaptive re-use or new use of buildings.
Temperatures hit new highs, yet world fails to cut emissions (again).
No longer enforcing certain waste transfer documentation.
Winners reactions during the event at the Park Plaza Hotel.
An exciting opportunity for stakeholders to collaborate.
Report from the BSRIA Briefing 2023, Cleaner Air, Better Tomorrow.