Blower Door Testing
A Blower door is a diagnostic tool designed to measure the airtightness of buildings and to help identify air leakage locations. A blower door consists of a calibrated fan for measuring an airflow rate, and a pressure-sensing device to measure the air pressure created by the fan flow. Knowing the airtightness of buildings helps us predict energy usage and anticipate ventilation needs to ensure adequate air exchange rates.
Home Energy Raters recommends using test smoke and/or an infrared thermal imager to locate the otherwise invisible drafts and exfiltration points that can create problems in buildings. We also recommend testing and sizing of ventilation systems and bath exhaust fans to avoid air quality problems
Duct Testing and Training
Home Energy Raters provides duct testing services help HVAC contractors and builders comply with the new energy codes.
Our field staff is highly experienced at testing, troubleshooting, and fixing duct leakage and has provided duct training services for contractors throughout Massachusetts.
Using a dust blaster and test smoke our technicians pressurize the system to locate any remaining leaks. The calibrated fan provides the CFM flow needed to determine if the system meets code, based on the size of the home. If for any reason the system is not in compliance we can work with your crews or subcontractor to rectify the problem areas.
Infrared Thermal Inspections
Infrared imagers when used in conjunction with a bower door fan can reveal otherwise hidden air leaks, insulation problems and bypasses. Home Energy Raters has Certified Infrared field staff with over twenty years of experience in troubleshooting and diagnosing heat loss and comfort issues in homes.
In some new construction scenarios we can use this technology to inspect for air leakage prior to wallboard and in all cases prior to finish trim detail. This pre-emptive approach is an easy way to ensure project goals are meet.
The old adage “you can’t manage what you don’t measure” is particularly true in regards to building performance. Heat, air, and moisture flows are not necessarily intuitive or recognizable without the use of specialized diagnostic equipment. These same buildingdynamics can cause comfort problems and waste energy, all of which is easily avoided if the guess work is eliminated.
Contract us to schedule a building performance test. If the home is being constructed under the Massachusetts New Homes program there are incentives available.