Most people perceive energy efficiency as alternative sources for heat, cooling or electrical services. Which it does, however its primary focus is on the conservation of energy usage.

New Homes: While energy star homes have been around for years. Builders on the most part have failed to embrace the concept. Due of course to market demand.

Yet this may change as the new building codes for Maine and New Hampshire have started to change. Several code enforcement officers have stated that in 2010 and 2011 you are going to see towns implementing standards with respect to higher energy efficiency standards. .

Existing Homes: Existing housing will be somewhat different. The demand need to change primarily through educating the home buyer as to the advantages of energy efficiency.

To determine the energy efficiency of a property typically will require an energy auditor that will utilize a blower door. Energy efficient experts utilize blower doors to establish where the energy loss is and how repairs and changes the cost and what changes are the most cost effective.

Several banks have started to implement programs to help finance energy efficiency upgrades since they find that a more energy efficient homes is less likely to go in default.

Investors in multi-family properties in which heating cost are a major factor in annual expenses, and the reduction of those expenses increase the value of their property, have been finding that making their property more energy efficient is a logical business decision.