Hvac Duct Pressure Testing Equipment

Smacna hvac air duct leakagg e test manual first edition 1985 ashrae 90 1 proposed.

Hvac duct pressure testing equipment.

A duct leakage tester consists of a calibrated fan for measuring an air flow rate and a pressure sensing device to measure the pressure created by the fan flow. The first step in duct testing is closing all the vents to make sure that the only place that air pressure can go through is via leaks along the ducts. However the blower for the test apparatus would have to produce 24 cfm at 10 to 12 static. A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating ventilating and air conditioning hvac ductwork.

This includes areas like unconditioned attics garages and crawlspaces. Commercial duct leakage pressure testing prospered for decades as a method of verifying one of many factors of hvac system performance. Our duct leakage testers are compliant with the following standards. The only time duct testing is required is when parts of the hvac system are outside of the conditioned envelope.

If any supply or return duct chases flexible lines or air handler units are in these areas by iecc 2015 code a duct leakage test is required. Testing system designed for 2 in h 2o operation at 10 in h 2o. Duct pressure testing is a diagnostic procedure performed by a certified professional that measures the air tightness of a home s duct system. Of course they have the pressure gauges to test refrigerant charge in air conditioners and heat pumps and many more pieces of technical equipment.

Testing includes the use of high technology viewing and recording equipment air pressure tests and an ocular inspection of your hvac equipment to determine the irregularities of your duct system. Testing duct leakage by pressurizing ducts can be traced back to smacna air duct leakage testing standards published in the 1960s. En 1507 ventilation for buildings sheet metal air ducts with rectangular section requirements for strength and leakage. Test pressure higher than duct design i e.

Test equipment personnel witnesses date location personnel. If the test is at 6 static pressure for leakage class 3 compliance i e 9 6 cfm per 100 s f with 6 orifice differential and 6 duct test pressure the meter could only indicate 24 cfm. Pole rd everson wa 98225. One of the things that we do both in upgrades of existing homes as well as in new construction is duct pressure testing of the system s.

En 12237 ventilation for buildings ductwork strength and leakage of circular sheet metal ducts. Retrotec eu hardermaat 12 7244pz barchem netherlands 31 0 522 282941.