Hvac Duct Pressure Testing Equipment

Testing duct leakage by pressurizing ducts can be traced back to smacna air duct leakage testing standards published in the 1960s.

Hvac duct pressure testing 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. This includes areas like unconditioned attics garages and crawlspaces. 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. En 1507 ventilation for buildings sheet metal air ducts with rectangular section requirements for strength and leakage.

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. Eurovent 2 2 leakage rate in sheet metal air distribution systems. Duct pressure testing is a diagnostic procedure performed by a certified professional that measures the air tightness of a home s duct system. 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. 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. En 12237 ventilation for buildings ductwork strength and leakage of circular sheet metal ducts.

Hvac contractors own a lot of equipment. Testing system designed for 2 in h 2o operation at 10 in h 2o. Of course they have the pressure gauges to test refrigerant charge in air conditioners and heat pumps and many more pieces of technical equipment. The only time duct testing is required is when parts of the hvac system are outside of the conditioned envelope.

However the blower for the test apparatus would have to produce 24 cfm at 10 to 12 static. One piece that few contractors own however is a duct leakage tester. Test equipment personnel witnesses date location personnel. Smacna hvac air duct leakagg e test manual first edition 1985 ashrae 90 1 proposed.

A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating ventilating and air conditioning hvac ductwork. Retrotec eu hardermaat 12 7244pz barchem netherlands 31 0 522 282941.