Controls Residential Contractors
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The Online Code Environment and Advocacy Network Navigating the World of Energy Codes | www.bcap-ocean.org
Controls | Residential | Contractors Summary The IECC requires that homes have a programmable thermostat for forced-air (HVAC) systems. It also requires that heat pumps not provide supplemental heat when the heat pump is capable of meeting demand. Automatic snowmelt control requirements ensure snowmelt systems do not run when the outside surface temperature is 50°F or higher and there is no precipitation.
Current Code The 2009 IECC covers temperature controls in Section 403.1. and snowmelt in Section 403.8.
QUICK FACTS Thermostat Controls – Section 403.1 2009 IECC Snowmelt Controls – Section 403.8 2009 IECC Minimum of R-2 insulation covering pipes Mandatory for all climate zones (where applicable) Detailed information can be found at:
Previous Code
Programmable thermostats from Energy Star
Previous editions of the IECC required a thermostat for each HVAC system. The 2009 takes this requirement one step further by mandating that it be programmable. The heat pump supplementary heat requirements have not changed. Snowmelt controls are new to the 2009 IECC.
Programmable thermostats from EERE (pg. 4) Thermostats and control systems from EERE Snowmelt system basic info
Exemptions Temperature controls are mandatory for all climate zones. Snowmelt controls apply only to buildings with snowmelt systems.
Requirements Contractors and sub-contractors must be aware of the requirements covered in the 2009 IECC and need to ensure that: Programmable thermostats are installed for each HVAC system Homeowners know the advantages of programmable controls and are knowledgeable about their use
Typical Problems
Figure 1: Programmable Thermostat
Standard issues/concerns that arise include: Installing standard (non-programmable) thermostats Builders do not inform clients of the energy saving features of controls
BCAP
OCEAN is an online resource of the Building Codes Assistance Project 1850 M St. NW Suite 1050 | Washington, DC 20036 | www.bcap-ocean.org
Controls | Residential | Contractors Summary The IECC requires that homes have a programmable thermostat for forced-air (HVAC) systems. It also requires that heat pumps not provide supplemental heat when the heat pump is capable of meeting demand. Automatic snowmelt control requirements ensure snowmelt systems do not run when the outside surface temperature is 50°F or higher and there is no precipitation.
Current Code The 2009 IECC covers temperature controls in Section 403.1. and snowmelt in Section 403.8.
QUICK FACTS Thermostat Controls – Section 403.1 2009 IECC Snowmelt Controls – Section 403.8 2009 IECC Minimum of R-2 insulation covering pipes Mandatory for all climate zones (where applicable) Detailed information can be found at:
Previous Code
Programmable thermostats from Energy Star
Previous editions of the IECC required a thermostat for each HVAC system. The 2009 takes this requirement one step further by mandating that it be programmable. The heat pump supplementary heat requirements have not changed. Snowmelt controls are new to the 2009 IECC.
Programmable thermostats from EERE (pg. 4) Thermostats and control systems from EERE Snowmelt system basic info
Exemptions Temperature controls are mandatory for all climate zones. Snowmelt controls apply only to buildings with snowmelt systems.
Requirements Contractors and sub-contractors must be aware of the requirements covered in the 2009 IECC and need to ensure that: Programmable thermostats are installed for each HVAC system Homeowners know the advantages of programmable controls and are knowledgeable about their use
Typical Problems
Figure 1: Programmable Thermostat
Standard issues/concerns that arise include: Installing standard (non-programmable) thermostats Builders do not inform clients of the energy saving features of controls
BCAP
OCEAN is an online resource of the Building Codes Assistance Project 1850 M St. NW Suite 1050 | Washington, DC 20036 | www.bcap-ocean.org
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