In order to effectively improve the energy efficiency of a home, an assessment must be made to determine just how inefficient the home is. This assessment is known as a home energy audit.
A clipboard audit is a simple one-page assessment of well-known causes for energy loss, such as lack of insulation, obviously leaky window/door frames, and poor usage habits. Typically, they do not include a blower-door test, and may even be as simple as a visual inspection of your home. While this type of audit tends to be cheaper, it is a much less effective way of determining the energy efficiency of your home, and a full home energy audit will pay back greater in the end.
We do not do not do clipboard audits. We perform a whole house assessment treating the building as one large mechanical system, each component of the home looked at as interacting and codependent.
First, we review your energy bills. This helps us get an idea of where you're losing energy and why. Next, we measure your home to assess its general area and volume, followed by a blower-door test. This test tells us how much air is being allowed to travel through your home via various penetrations in the building shell (ie: plumbing/electrical penetrations, duct chases, light fixtures, etc.). During this test, we will conduct a series of inspections, including, but not limited to, infrared scans, insulation inspections, and attic inspections. We also perform a combustion analysis of all combustion appliances present (ie: boilers, furnaces, gas ovens/ranges, etc.) to determine their efficiency and ensure that they are all firing and venting properly. This includes, but is not limited to, carbon monoxide testing, combustion draft testing, combustion efficiency testing, flue pipe exhaust inspection, duct air flow testing, duct leakage testing, visual inspections of the condition of the equipment, exhaust fan inspection, clothing dryer vent inspection, and a well pump analysis.
Back at our office, we use the information garnered from these tests to draw up a Rating Report. This report tells you, the customer, how efficient your home is, what work we propose to perform to improve your home's efficiency, and how efficient your home will be upon completion. Also included in this report are drawings of your home, defining its dimensions and thermal boundary. This extensive audit is much more accurate than a clipboard audit, providing greater potential for savings.