LA HVAC case studies
LA HVAC · Put your knowledge to work in context.
The Louisiana HVAC Contractor licensing exam is the trade and business assessment that Louisiana uses to qualify individuals who want to contract for heating, ventilation, air conditioning, and refrigeration work in the state. It is aimed at people moving from technician or installer roles into ownership or qualifying-party status, and at established shops adding a mechanical classification. Expect a multiple-choice exam that mixes trade knowledge with the business and regulatory side of contracting: refrigeration theory and components, load calculation and duct design, heating and combustion, cooling equipment and refrigerant charging, electrical controls and motors, installation and piping, and the Louisiana code, permit, and licensing framework, plus estimating, contracts, and project management. Trade questions tend to be applied rather than definitional, so prepare by working problems, not just reading. The LA HVAC case studies are 5 cases and about 3,932 words.
1The Draft Hood That Won't Hold: CO Call on an 80% Furnace
January, 46°F outside. You are sent on a 'no heat, smells funny' call to a raised cottage in Metairie.
752 words, about 4 min2The 4-Ton Swap in Baton Rouge: Load vs. Duct Reality
Single-story 2,650 sq ft slab house in Baton Rouge, built 1978, 8-ft ceilings, original single-pane windows, ducts entirely in a vented attic that hits 140°F in July. The 4-ton condenser failed and the homeowner wants it swapped, same size, by Friday.
789 words, about 4 min3Subcooling 4°F After a 55-ft Line Set
Three weeks ago your company set a new 3-ton R-410A condenser on an existing line set: 3/8 in. vapor, 55 ft total, with the condenser 30 ft above the evaporator.
798 words, about 4 min4The Chattering Contactor and the 26-Volt Drop
Callback on a 2.5-ton split in a Slidell condo. Complaint: it cools for five to seven minutes, then nothing, and the breaker in the outdoor panel trips.
782 words, about 4 min5The Strip-Mall Rooftop and the Borrowed License
A general contractor you have subbed for twice asks you to set a 5-ton rooftop package unit and connect the ductwork for a tenant build-out in a strip mall in unincorporated Jefferson Parish. Contract value is $28,000.
811 words, about 4 min