The HVAC sub touches your schedule at rough-in, trim and final. Picking the wrong one shows up as missed dates and failed inspections. Ask these six questions before you award the scope. 1. Are you licensed in Utah for this work? Ask for the DOPL license classifications (for example, S350 HVAC) and verify them on the Utah DOPL website. 2. Do you self-perform, or subcontract the labor? Ask who will actually install the work, and whether the company that bid the job is the company building it....

Plan reviewers and inspectors increasingly ask for load calculations with HVAC submittals. Here is what each report does and why it matters to your schedule and your buyer. Manual J: how much heating and cooling the house needs Manual J calculates heat loss and heat gain room by room, using the home's orientation, windows, insulation, air tightness and local design temperatures. It is the foundation for everything else. Manual S: which equipment to install Manual S matches real equipment...

A failed rough-in inspection costs more than a re-trip fee. It holds up insulation, drywall and every trade behind them. Here is what should be right before you call for inspection on a new home. 1. Load calculations on site Utah follows the International Residential Code, which requires heating and cooling equipment to be sized using ACCA Manual J and Manual S, and ducts designed with Manual D. Have the reports with the approved plans. 2. Duct supports and sealing Ducts must be supported at...