Hvac Duct Pressure Testing Equipment

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.

Hvac duct pressure testing equipment.

Smacna hvac air duct leakagg e test manual first edition 1985 ashrae 90 1 proposed. 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. 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. En 1507 ventilation for buildings sheet metal air ducts with rectangular section requirements for strength and leakage. Pole rd everson wa 98225. One piece that few contractors own however is a duct leakage tester.

This includes areas like unconditioned attics garages and crawlspaces. Testing duct leakage by pressurizing ducts can be traced back to smacna air duct leakage testing standards published in the 1960s. The only time duct testing is required is when parts of the hvac system are outside of the conditioned envelope. Test pressure higher than duct design i e.

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. 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. Test equipment personnel witnesses date location personnel. 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.

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. A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating ventilating and air conditioning hvac ductwork. However the blower for the test apparatus would have to produce 24 cfm at 10 to 12 static. Hvac contractors own a lot of equipment.

Commercial duct leakage pressure testing prospered for decades as a method of verifying one of many factors of hvac system performance. 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.