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What Is An Energy Audit?

An energy inspection or audit is designed to assess various aspects of a property, in order to save the customer money on the household energy bill. The efficiency of appliances, mechanical systems, the structure’s envelope and the home’s orientation are evaluated to design the best plan for creating a more energy efficient home.  Audits are typically more comprehensive than energy inspections as they incorporate infrared technology, a blower door test and computer analysis, in order to accurately pinpoint problem areas in a home. Short and/or long term plans can be designed. The use of the client’s yearly energy bill is helpful in creating such a plan.

Household appliances and fixtures are assessed by examining their input/output ratio. Typically, Energy Star upgrades are recommended where appropriate (an upgrade can reduce energy usage by 40%) and compact fluorescent light bulbs (CFLs—these convert about 20% of the electricity flowing through them to light vs. the 5% that incandescent bulbs convert).  These decisions are based on the short and long term needs of the homeowner. In addition, the mechanical systems such as the heating/cooling, ventilation and thermostat are also assessed.

One of the most important concerns of the energy inspection or audit is to assess the structure’s envelope. This refers to the barrier between the interior and exterior environment. The quality of the structure and its ability to maintain temperature efficiently and regulate moisture and air flow are key areas of concern. The energy audit includes inspection of the foundation, roof, walls, doors and windows. The specific condition of the components and the types of materials used is assessed as related to air leakage and to determine the R-factor of these components. (The R-factor refers to the component’s thermal resistance.) Recommendations are then made as to how to improve on the quality of the envelope’s components. These recommendations might include adding insulation, energy efficient windows, sealing doors and windows, insulating the hot water heater and water lines, and sealing and insulating ducts transporting hot and cold air.

The results of the audit include a report of the findings as well as recommendations on how to improve the energy efficiency of the home.  Reports generated by an audit normally include infrared photos which document the report findings. Short and long term recommendations are made and yearly follow-up assessments scheduled according to the homeowner’s needs.

About the Author

Owner Peter Ottowitz, MSEE, MBA is a certified energy auditor, level one thermographer, trained certified master home inspector, licensed construction supervisor and household environmental testing specialist. Visit www.newworldenergyaudits and www.advancelookma.com for more info.
800-781-7130.

Easy multiple choice biology.?

Easy multiple choice questions for easy points!

D and A.
Question 1. a and b show some special structures. c shows really small structure.
But D is how it is done. Hemotoxlyn and eosin stains will do it.
question 2.
A is how is it done. As difficult as it is to interpret.
Already commented on b and c. Green fluorescent protein technology shows special things about proteins.

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