A Home Performance Energy Audit- Part 2

January 23, 2012

Please see Home Performance Energy Audit Part 1 for the first part of our Home Performance Energy Audit.


What is a Home Performance Energy Audit? Part 2

As we explained in Part 1, a Home Performance Energy audit is a customized report that identifies the particular needs of your home based on the analysis of an AccuGreen Home Performance Energy Auditor. In the first part of “A Home Performance Energy Audit“, we explained the inspection portion of a Home Performance Energy Audit. In Part 2, we will go over the testing portion of a Home Performance Energy Audit.


Combustion Appliance Zone Inspection

Here at AccuGreen Home Performance, take the Health and Safety of your family and your home very seriously. We always perform a visual inspection of your Combustion Appliance Zone (CAZ) before any testing begins. Our BPI certified Energy Auditors are equipped with Carbon Monoxide (CO) detectors that monitor the Carbon Monoxide levels in your home throughout a Home Performance Energy Audit. If at any time during the Energy Audit CO levels exceed 35 PPM (Parts Per Million), we immediately notify you and stop the Home Performance Energy Audit.

During the Combustion Appliance Zone Inspection, we first look for any gas leaks, or kinked gas lines. At AccuGreen Home Performance, we use a gas leak detector that can detect the smallest leak in your gas lines. If we do detect a gas leak, we then visually verify the leak with gas leak detection fluid. We also check your gas line fittings date stamp, and recommend replacing any fittings stamped prior to 1973.

Once we have inspected for leaks, our Home Performance Energy Auditor then identifys what type of Combustion Appliances you have. Typical Combustion Appliances include (but are not limited too): Furnace, boiler, and domestic hot water heater. We identify what draft type your Combustion Appliances use. Furnaces, boilers and domestic hot water heaters can be natural draft, induced draft, power draft or sealed combustion. In homes that have hydronic (baseboard) or steam heat, we visually inspect your return and supply piping for insulation and leaks in the CAZ. We also check your water heater for a safety valve, a properly installed drip leg, your current temperature setting, and any insulation on the piping. We also check your HVAC filters, and recommend replacing them if they are excessively dirty or are not installed correctly.


Combustion Appliance Zone Testing

Once the inspection of your Combustion Appliance Zone is completed, our Home Performance Energy Auditor will then move on to testing your CAZ for a Worst Case Depressurization test. The purpose of the CAZ Worst Case Depressurization test is to ensure that your home will not create a condition where your Combustion Appliances back-draft harmful exhaust gas into your home. During this test, our Energy Auditor will turn on all exhaust fans in your home to create negative pressure, and open and close doors to create the worst case scenario for your Combustion Appliances.  The test will start with the lowest BTU appliance, then the next largest system, until all the Appliances are tested. If any Appliance fails the Worst Case Depressurization test, then it will be tested in Natural Case, with no exhaust fans on.


Contact Us about a Home Performance Energy Audit

Part 3 of “A Home Performance Energy Audit” will cover our Home Performance Energy Audit Report.

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