Residential mechanical ventilation systems will not reach their performance potential if components are poorly manufactured or installed improperly. Several factors contribute to poor performance including long duct lengths and compression in flexible ducts, resulting in a loss of ventilation rate and a significant increase in power and energy consumption by HVAC systems.
The distribution system is an integral part of many mechanical ventilation systems. It can have a significant effect on the ventilation rate and efficiency of a building. Duct leakage is a source of energy loss, ventilation rate loss, and a source of indoor pollution (in return ducts).
High performance lighting with optional controls is a key element for a more comfortable and energy efficient home. There are several technologies beginning to be available today that could have the same transformative effect on energy efficiency in homes. LED, or light emitting diode, lighting systems are currently being developed that could reduce the energy use dramatically.
HVAC systems need to be properly sized so the home will be comfortable amid the harshest outdoor conditions. If a unit is oversized, energy costs may increase and the home may experience high temperature swings during milder weather.
Consumers face many considerations when selecting a new water heater for their home. There are several types of high efficiency water heaters, each with different advantages and payback periods.
Dramatic improvements in fenestration technologies in recent years have revolutionized performance. A good example of this change is the adoption of Low-E window technology in the 1990s, a period when almost all windows installed in homes were clear glass. By 1995, the first national standard for measuring solar heat gain co-efficient (SHGC) for windows was developed. When minimum SHGC ratings were first incorporated into energy codes in the year 2000, most manufacturers were no longer making clear glass windows. Technology had transformed the market faster than national codes could incorporate the new standards.
The building envelope is one of the most critical features of an energy efficient home. Heating and cooling account for 50% to 70% of the total energy used in the average American home, in which air leakage can be a significant cause of energy waste.
Insulation is a key element for a more comfortable and energy efficient home. It is important to have a continuous boundary of insulation between the conditioned, indoor spaces and the unconditioned, outdoor spaces. This boundary is referred to as the “building envelope” and consists of the walls, floor, and ceiling or roof and it provides the thermal barrier between the indoor and outdoor environment. Insulating ceilings, walls, and floors decreases the heating or cooling needed by providing an effective resistance to the flow of heat.
Residential Compliance Using REScheck™
Residential Energy Code News
- Northern Nevada Welcomes a New Compliance Path September 28, 2016
- New Energy Efficiency and Green Appraisal Resource for REALTORS® June 21, 2016
- The Energy Rating Index: What does the future hold? March 17, 2016
- Do Energy Codes Work? December 15, 2015
- Homebuyer Demand for Energy Codes December 4, 2015
- Appraised Value and Energy Efficiency: Getting It Right November 10, 2015
- DOE Issues Final Determination On The 2015 IECC June 11, 2015
- My View: Utah Needs New Energy Codes That Make Buildings, Homes More Efficient June 7, 2015
- New Homes Must Meet 2009 IECC to Qualify For Federal Mortgage Insurance May 12, 2015
- DOE’s Three Year Residential Energy Code Field Study May 12, 2015
- Energy Codes Preserve Homeowner Health And Comfort May 12, 2015
- Highlights of the 2015 IECC Residential Code Changes January 28, 2015
- Energy Codes Get It Done December 1, 2014
- A note from Sam Rashkin: It’s the Window Stupid… November 5, 2014
- The Growth Of DET Verifier Programs July 31, 2014
- HERS and the IECC Performance Path July 25, 2014
- High-R Wall Construction Strategies: Reducing Costs And Risk While Increasing Energy Performance April 17, 2014
- Code Officials Defeat Proposals To Rollback Historic Efficiency Gains In America’s Model Energy Code October 8, 2013
- 2013 Mayors Resolution Supports Stronger 2015 IECC July 15, 2013
- Why Energy Codes Matter: Resources for Advocates, Consumers, and Policymakers June 1, 2012
- New Online Guides Teach Consumers How Building Codes Make Homes More Energy Efficient October 12, 2011
Residential Energy Code Resources
This page was last modified on: August 12, 2016