NFPA 72 2023 edition
NFPA 72 requires differential pressure testing of duct detector sampling tubes. While not often enforced nor fully understood, your team should be equipped to know how to do it when called upon.
Where to find it: NFPA 72 2023 edition, table 14.4.3.2.17.7(e). Test duct smoke detectors that use sampling tubes to ensure that they will properly sample the airstream in the duct using a method acceptable to the manufacturer or in accordance with their published instructions.
Mechanical inspections don’t look the same for every contractor. Residential teams need to move fast, stay consistent, and clearly communicate results to customers. Commercial contractors often need more capabilities—like detailed asset tracking, preventative maintenance, and help staying compliant. Many mechanical businesses sit somewhere in the middle, handling a mix of both. The problem? Most inspection […]
In 2025, commercial contractors faced rising labor constraints, tighter margins, and increasing customer expectations. Growth required more than adding headcount or chasing more work. It required operating smarter at every level of the business. Contractors using ServiceTrade focused on the fundamentals that drive scalable performance: helping technicians spend more time on billable work, giving office […]