Free HVAC Gas Line Pressure Test Report Template

No, and this is the requirement almost every gas test form omits. IFGC 406.4 says mechanical gauges used to measure test pressures "shall have a range such that the highest end of the scale is not greater than 5 times the test pressure." Turn that around and it is a floor on where your reading sits: the test pressure has to land at or above one fifth of full scale. A 3 psig test therefore needs a gauge reading to 15 psi or less — the 0-30 psi gauge most people reach for is already non-compliant for it, and a 0-100 psi gauge puts a 3 psig test at 3 percent of span, inside the width of the needle. The pipe can bleed down measurably and the needle will not visibly move. That is the whole point of the clause: it forces the test onto an instrument where a drop is legible. This report asks for the gauge's full-scale range and scores it against the pressure you actually pulled, so a test read on the wrong instrument is called out instead of being recorded as a pass. The rule is written against mechanical gauges, so a manometer — which 406.4 expressly permits — is not judged by it, and a digital gauge gets an advisory rather than a failure.

Usually in practice, but that is not what the code says, and knowing the difference matters when an inspector asks what you tested to. IFGC 406.4.1 sets a floor, not a fixed value: "not less than 1.5 times the proposed maximum working pressure, but not less than 3 psig, irrespective of design pressure." For an ordinary 7 in. w.c. system, 1.5 times working pressure is about 0.38 psig, so the absolute minimum governs and the code answer is 3 psig. Duration is a floor too, and it is the one place the two model codes genuinely disagree: IFGC 406.4.2 scales with the system — half an hour per 500 cubic feet of pipe volume or fraction thereof, 10 minutes minimum under 10 cubic feet, never required to exceed 24 hours — while IRC G2417.4.2 drops the volume term and says a flat 10 minutes. So where does 10 psi for 15 minutes come from? Local amendments. Denver amends 406.4.1 to 10 psig, Minnesota to 25 psig, Mountain Village CO to 15 psi for 20 minutes — all amendments to the same sentence. Every one of them is enforceable where it is adopted. This report scores against the code by default and lets you enter your AHJ's figure instead, then prints both so the reader can see which number the verdict used.

Where you altered the piping, yes — IFGC 406.1 requires piping to be tested after installation and before use, and 406.1.2 extends it to repairs and additions. A straight swap that reuses the existing connection with only the appliance connector disturbed is a different case, and your AHJ decides where the line falls. When you do test, the requirement is derived from working pressure: 3 psig for a 7 in. w.c. system under IFGC 406.4.1, unless your jurisdiction amended it. Denver requires 10 psig, Minnesota 25 psig.

No. The combination gas valve on a furnace and the gas train on a rooftop unit are rated in inches of water column, not psig, and test pressure will damage them. IFGC 406.3.3 requires equipment "designed for operating pressures of less than the test pressure" to be isolated by disconnecting it and capping the outlet — closing the appliance shutoff is not enough, because the valve seat is not what fails, the downstream components are. IFGC 406.3.4 covers the opposite case, where equipment rated at or above the test pressure may be isolated by closing its shutoff valve. The pre-test isolation list on this report carries both, with the citations, and prints anything you did not confirm.

One whose full scale is no more than 5 times the test pressure — that is IFGC 406.4, and it is the requirement almost every gas test form omits. For a 3 psig test that means a gauge reading to 15 psi or less; a 0-30 psi gauge does not qualify, and a 0-100 psi gauge puts the reading at 3 percent of span where a leak is invisible. A manometer is expressly permitted by 406.4 and is not judged by the scale rule, because the rule is written against mechanical gauges. Enter your gauge's range in this report and it tells you whether the instrument was legal for the test you ran.

Under IFGC 406.4.2, half an hour for each 500 cubic feet of pipe volume or fraction thereof, with a 10 minute minimum below 10 cubic feet and no requirement to exceed 24 hours. A roof header of a few hundred feet is still one block, so 30 minutes; a large distribution system crosses into 60 minutes and beyond. Under the IRC, which applies to one- and two-family dwellings rather than commercial roofs, it is a flat 10 minutes. Enter the pipe volume and pick the code basis and the report derives the requirement and prints the reasoning.

Air, nitrogen, carbon dioxide or an inert gas. IFGC 406.2 names those four and states that oxygen shall never be used — oxygen in a line with hydrocarbon residue is an ignition source. Nitrogen is the usual choice on larger commercial work because it is dry and will not carry moisture into the gas train. The report records the medium and flags oxygen as an error.

IFGC 406.5 treats any reduction in gauge pressure as a leak unless it can be readily attributed to another cause, and requires the affected piping to be repaired or replaced and retested. So every section here carries a repairs note and a complete retest row. When a retest is entered it becomes the deciding result, while the original failure and the repair stay on the record — which is what an inspector wants to see, rather than a form that was quietly re-filled after the leak was fixed.