{"id":1464,"date":"2020-01-01T19:06:58","date_gmt":"2020-01-01T19:06:58","guid":{"rendered":"https:\/\/www.energycodehelp.com\/?p=1464"},"modified":"2021-01-27T09:49:32","modified_gmt":"2021-01-27T14:49:32","slug":"building-performance-testing","status":"publish","type":"post","link":"https:\/\/www.energycodehelp.com\/building-performance-testing\/","title":{"rendered":"Building Performance Testing"},"content":{"rendered":"<h1>Building Performance Testing<\/h1>\n<hr \/>\n<p>Performance testing is integral to the HERS Rating process.\u00a0 This suite of tests allows us to quantify the performance characteristics of your home.<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #333333;\"><strong>Blower Door Test<\/strong><\/span><\/p>\n<p>A blower door test evaluates how \u201cleaky\u201d the house is and the test looks just like it sounds.\u00a0 A frame and cloth panel are compression fit in an exterior door and a large calibrated fan is mounted in the frame. The fan depressurizes the interior of the house to a target pressure of 50 pascals and a computer measures how many cubic feet per minute (CFM) of air have to be removed from the house to hold that pressure.\u00a0 The results can be expressed as CFM of leakage or more commonly as air changes per hour (ACH), how many times in one hour is the entire volume of the house exchanged.\u00a0 Typically, energy codes require a maximum ACH allowed in residential construction; here is Massachusetts that maximum is 3.<\/p>\n<p>Check out our article\u00a0\u00a0<a href=\"https:\/\/www.energycodehelp.com\/air-sealing-with-aerobarrier\/\">&#8220;Air Sealing With AeroBarrier\u2122&#8221;<\/a>\u00a0to learn about a new and innovative air sealing technology that allows you to reach any level of air tightness, worry free. Never worry about failing a blower door test again!<\/p>\n<p><span style=\"color: #333333;\"><strong>Duct Test<\/strong><\/span><\/p>\n<p>A duct test will determine the much how leakage there is in the ductwork that delivers heated or cooled air to the living space.\u00a0 The mechanical system is turned off and all the registers, both supplies and returns, are sealed off with a low-tack adhesive plastic.\u00a0 A small calibrated fan is attached to the air handler and the duct system is either pressurized or depressurize to a target pressure of 25 pascals while a computer measures how many cubic feet per minute (CFM) of air have to be added or removed from the ducts to hold that pressure. The results can be expressed as CFM of leakage or more commonly as CFM per square foot (SF) of floor area.\u00a0 Leaky ductwork is a large contributing factor to excessive utility costs.<\/p>\n<p><span style=\"color: #333333;\"><strong>Ventilation Test<\/strong><\/span><\/p>\n<p>Building codes require a specified amount of ventilation for homes which is calculated by the formulas in ASHREA 62.1 and 62.2.\u00a0 We will compute the amount of required ventilation for your home and test your ventilation system to ensure that it will meet the building code.\u00a0 Ventilation systems can take many forms and are typically comprised of exhaust only or balanced ventilation systems.\u00a0 Exhaust only systems are tested by using a flow hood to measure the cubic feet per minute (CFM) of air being extracted by the fan.\u00a0 Balanced systems can be tested with a flow hood, or more commonly with pressure probes in the incoming and outgoing air streams which measure static pressure.\u00a0 The manufactures of the system have a chart which shows a CFM rate for a given static pressure.\u00a0 Balanced ventilation systems should have an equal amount of incoming and outgoing air.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Performance testing is integral to the HERS Rating process.\u00a0 Learn how this suite of tests allows us to quantify the performance characteristics of your home.<\/p>\n","protected":false},"author":2,"featured_media":1621,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Building Performance Testing | Home Energy Raters<\/title>\n<meta name=\"description\" content=\"Learn about what goes into building performance testing and how these tests allow us to quantify 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