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Everett HVAC Energy Codes

If you live in Everett, WA, are you looking to have your airducts and furnaces cleaned or replaced? If you do, then it may be of your interest to inform yourself on the latest city amendments that were updated in 2007. Even if you weren’t thinking about having your furnaces and air ducts serviced, you may now be wondering how often you should have them cleaned or replaced. Not only will this article discuss the new code requirements for air ducts and furnaces for the city of Everett, but it will also help you decide on what you want to look for when selecting new air ducts and furnaces so that you can keep your peace of mind and be confident that you’re heating is going to perform with excellent function.

The city of Everett adopted a new policy for energy codes in 2007 stating that any commercial building over 5,000 square feet must meet the LEED Sliver certification requirements. If the resources are not sufficient enough, the city will strategize to find other cost-effective strategies for green building. The city of Everett will try to incorporate green building strategies in a cheaper and more efficient process through the efforts of code programming and the land’s stipulations and requirements.

Everett’s energy codes appeal to the Washington State Energy Code for all residential and commercial developments and is mandatory to be includes in all other city codes. To determine the air leakage amounts for commercial and residential buildings, refer to Table C402.4.3 of the Washington State Energy Code. The table will also show you the necessary procedures to test the air infiltration for each assembly and its location.

The HVAC equipment’s performance will be based on the procedures of tables C403.2.3(1), C403.2.3(2), C403.2.3(3), C403.2.3(4), C403.2.3(5), C403.2.3(6), C403.2.3(7) and C403.2.3(8). To determine the efficiency of the HVAC system, view the certification program. If it is not listed, then the system must be evaluated from data provided by the maker of the system. If different indoor and outdoor coils are used, then tests and data need to be given by the designer of the efficiency process for the specified components.

Gas and oil operated furnaces that have input ratings greater than or equal to 225,000 Btu/h will need either an interrupted device or an intermittent ignition, while also including a mechanical draft or a flue damper. If you should choose not to use a flu damper, you may resort to using a vent damper, which helps combustion air lead to the conditioned room. These furnaces with input rating of 225,000 Btu/h or greater and even electric furnaces will include jacket losses that must not exceed .75 percent of the input’s rating.

According to C403.2.3.1, Water-cooled centrifugal chilling packages must provide equipment that meet the expectations for the tests at 44 degrees Fahrenheit when leaving cold water and must not exceed 85 degrees Farenheit when entering condensed water at 3 gpm/ton, while the condenser water flow needs to have a maximum full-load kW/ton based on the equations given in tables C4-3 and C4-4 for the Washington State energy code. The adjusted full-load and NPLV values for the centrifugal chillers must not include evaporator fluid that is less than 36 degrees Fahrenheit, leaving condenser fluid that is no more than 115 degrees Farenheit and the LIFT is no less than 20 degrees Farenheit and no more than 80 degrees Farenheit.

Have your air ducts and furnaces cleaned or installed with confidence and know that your air ducts will be clean and have you only breathing in fresh air. The installer or cleaner will do a before and after inspection to make sure that your air circulation is clean as can be, while also providing you with the lowest costs possible. So don’t hesitate any longer and have your air ducts cleaned to give you, your family and co-workers a safe and healthier environment.