Workers' comp class code · Construction & Trades
Class code 5537 — HVAC Installation
Installation, service, and repair of heating, ventilation, and air conditioning systems.
This classification covers HVAC contractors who install, service, and repair heating, ventilation, and air conditioning systems in homes and commercial buildings. Crews set furnaces, air handlers, condensing units, and ductwork, run refrigerant lines, and perform seasonal maintenance and repair calls. The mix of new installation and repair service means techs regularly move between attics, rooftops, mechanical rooms, and crawlspaces.
Payroll includes installers, service technicians, and helpers who load and haul equipment such as rooftop condensers and furnaces. Many HVAC companies also employ techs who do light electrical or sheet metal work as part of a full install, and that labor generally stays under this code when it's incidental to the HVAC job.
Injury drivers include musculoskeletal strain from carrying heavy units up ladders or onto rooftops, cuts from sheet metal ductwork edges, and burns or frostbite from refrigerant handling. Rooftop and attic work adds fall and heat-stress exposure, and confined mechanical spaces increase the chance of awkward-posture injuries.
What code 5537 typically includes
- Furnace, air handler, and condenser installation
- Ductwork installation tied to HVAC systems
- Refrigerant line and charge service
- Seasonal maintenance and tune-up calls
- Rooftop and attic equipment placement
Codes this one gets confused with
5538 — Sheet Metal HVAC Duct Work
Standalone duct fabrication and installation shops are rated separately from full-service HVAC contractors who also install the mechanical equipment.
See code 55385479 — Sheet Metal Work
General sheet metal fabrication not tied to HVAC ductwork, such as flashing or trim, falls under the broader sheet metal code.
See code 54795190 — Electrical Wiring
Wiring a new circuit to power the equipment is electrical work; connecting and running the unit itself is HVAC.
See code 5190What this code means for your premium
HVAC work is priced in the moderate band for the trades, reflecting frequent ladder and rooftop access along with equipment handling, generally above indoor finish trades but below high-fall exposures like roofing.
Estimate your premiumClassification is not final until a carrier assigns it. Code numbers, wording and exceptions vary by state and rating bureau — several states run their own bureaus. This page is general reference written in our own words; your carrier's underwriter assigns the code based on your actual operations and payroll records.
Questions about code 5537
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