Energy Code Design

Changes in energy code dont have to be painful. HCG and our partners have developed code summaries and design guides to help you get the job done.

The State of Texas is currently under IECC 2015 as the adopted energy code for use in the state for all residential, commercial, and industrial construction that is not single-family residential construction under Rule §19.53(a).
Code History
Effective Nov. 1, 2016, SECO adopted the 2015 International Energy Conservation Code (IECC) for commercial, industrial and residential buildings taller than three stories. The code applies to R2, R3 and R4 residential buildings and excludes single and two-family residences of three stories or fewer above grade.
Several municipalities within the state of Texas have moved ahead and adopted IECC 2018 as their minimum energy code.
A municipality or county may establish procedures to adopt local amendments to the code. Such amendments may not result in less stringent energy efficiency requirements in non-attainment and affected counties.
Design Guides
All
Crestron
nLight
ETC
IECC 2021
Offices
Offices
IECC 2021
Healthcare
Healthcare
IECC 2021
Education
Education
IECC 2021
Hospitality
Hospitality
IECC 2021
Restaurants
Restaurants
IECC 2021
Retail
Retail
Applications Guide
IECC 2015
IECC 2015
Applications Guide
IECC 2018
IECC 2018
Applications Guide
Ashrae 2019
Ashrae 2019
Applications Guide
Ashrae 2016
Ashrae 2016
ETC Echo Design Guide
ETC Echo Design Guide
Distributed Controls Design Guide
Distributed Controls Design Guide
DMX Guide
DMX Guide

Key energy code changes

IECC 2018
  • Lighting Controls (Mandatory)
  • C405.1
  • Lighting systems shall be provided with controls that comply with one of the following.
  • Lighting controls as specified in Sections C405.2.1through C405.2.6
  • Luminaire level lighting controls (LLLC) and lighting controls as specified in Sections C405.2.1, C405.2.4 and C405.2.5.
  • New
  • Luminaire Level Lighting Controls
  • C405.2.2
  • Luminaire level lighting controls (LLLC) and lighting controls as specified in Sections C405.2.1, C405.2.4 and C405.2.5. The LLLC luminaire shall be independently capable of:
  • Monitering Occupant Activity
  • Monitering ambient light, and adjust as needed
  • Configuration and Reconfiguration of performance parameters
  • Example
  • New
  • Occupancy Sensor Controls
  • C405.2.1
  • Occupant sensor controls shall be installed to control lights in the following space types:
  • Classrooms/lecture/training rooms
  • Conference/meeting/multipurpose rooms.
  • Copy/print rooms.
  • Lounges/breakrooms.
  • Enclosed Offices
  • Open Plan Offices
  • Restrooms
  • Storage Rooms
  • Locker Rooms
  • Spaces 300 square feet or ess
  • Warehouse Storage Areas
  • New
  • Sensor control in open plan office
  • C405.2.1.3
  • . Occupant sensor controls in open plan office spaces less than 300 square feet (28 m2) in area shall comply with Section C405.2.1.1. Occupant sensor controls in all other open plan office spaces shall comply with all of the following:
  • 600 square foot control zones
  • All open office off when vacant
  • Zones power reduced to 80% when zone is vacant
  • Daylight cannot activate vacant zone
  • Example