OK HVAC Contractor case studies
OK HVAC Contractor · Put your knowledge to work in context.
The Oklahoma Mechanical (HVAC) Contractor credential is issued through the state's Construction Industries Board (CIB), the agency whose stated mission is "to protect life and property by licensing and inspection of the related trades for the health, safety, and welfare of the public." It is aimed at people who perform, or offer to perform, mechanical trade work in Oklahoma - the CIB states plainly that trade licenses/registrations are required for that work, even though general contractors are not currently required to hold a state general contracting license. Candidates should also contact local jurisdictions, since cities and counties may impose their own requirements on top of the state license. The OK HVAC Contractor case studies are 5 cases and about 2,725 words.
1Upsizing Without a Load Calculation
A 1,800 ft² 1978 ranch in Oklahoma City has a 3-ton R-22 split system that cannot hold 75°F on a 100°F design day. The owner has already signed a proposal for a 4-ton 16 SEER2 condenser and a 4-ton air handler.
608 words, about 3 min2The Lapsed Qualifying Contractor
Sooner Comfort LLC holds an Oklahoma mechanical contractor license with the owner as qualifying party. The license expired March 31.
569 words, about 3 min3Rooftop Unit Changeout in a Strip Center
A property manager for a 2,500 ft² retail suite in Tulsa authorizes replacement of a 10-ton gas/electric rooftop unit with a 12-ton unit because the suite 'never keeps up' after a new server room was added. The existing curb is 10 feet from a make-up air intake and 4 feet from a plumbing vent.
588 words, about 3 min4Continuing Education Audit
A mechanical contractor submits a renewal application to the Oklahoma Construction Industries Board. The application lists 12 continuing-education hours: 4 hours of a manufacturer's refrigerant-safety webinar (provider not on the CIB approved list), 4 hours of an online 'small-business marketing' course from a national association, 2 hours of an OSHA toolbox-talk series, and 2 hours of a local code-update seminar taught by a licensed engineer but not pre-approved by CIB.
563 words, about 3 min5Rough-In Inspection Failure on a Duplex
During the rough-in inspection of a new duplex in Norman, the city mechanical inspector documents: (1) an 80% AFUE furnace in the attic has a PVC flue pipe connected to the draft hood; (2) the return air for the upstairs unit is drawn through a 24×24 grille in the attached garage wall; (3) the attic air handler's primary condensate drain is trapped and run to a soffit, but there is no secondary drain pan or switch; (4) flexible duct in the garage is supported every 6 feet and sags 4 inches between straps; (5) the gas line to the furnace is CSST bonded only at the manifold. The contractor says the furnace is 'high-efficiency enough' and the garage return is 'sealed.' The drywall is scheduled for Monday.
397 words, about 2 min