Air Conditioning Refrigeration Manufacturing Workers Compensation (class code: 3165) Insurance

Workers' Compensation Insurance under Class Code: 3165, takes into account the specific risks and hazards associated with the air conditioning, refrigeration, or heating equipment manufacturing industry.

Workers in air conditioning and refrigeration manufacturing units may face various hazards due to the nature of their work environment and the tasks they perform.

Common hazards include:

  • Physical Hazards - risks of cuts, crush injuries, and amputations from moving machinery, heavy equipment, and sharp tools during the manufacturing process.
  • Chemical Hazards - exposure to various chemicals, such as refrigerants and cleaning agents, can expose workers to potential health risks, including skin irritation, respiratory issues, and chemical burns.
  • Electrical Hazards - working with electrical components and wiring increases the risk of electric shock, arc flash incidents, and potential fires.
  • Ergonomic Hazards - repetitive movements, heavy lifting, and awkward postures can contribute to musculoskeletal disorders, such as back pain, carpal tunnel syndrome, and strains.
  • Noise exposure - the operation of machinery and equipment in manufacturing units can generate high noise levels, leading to potential hearing damage or loss.
  • Heat and Cold Exposure - the nature of the manufacturing process may expose workers to extreme temperatures, leading to heat stress or cold-related illnesses.
  • Machine Malfunctions - mechanical failures or malfunctions of equipment can lead to unexpected hazards and accidents.
  • Fire and Explosion Risks - certain processes involving flammable materials and refrigerants can pose fire and explosion risks if not managed carefully.

Workers' Compensation covers medical expenses, rehabilitation costs, and a portion of lost wages for employees who suffer work-related injuries or illnesses.

Additionally, it may provide death benefits to the dependents of an employee who dies due to a work-related incident.

What is Air Conditioning Refrigeration Manufacturing Workers Compensation (class code: 3165)?

Class code 3165 is the workers' compensation classification commonly applied to businesses that manufacture air conditioning, refrigeration, or heating equipment. The policy recognizes the specific operational hazards of this industry and provides coverage for workplace injury and occupational illness for employees. Related coverage types manufacturers often consider alongside workers' comp include commercial liability, equipment coverage, and property coverage.

Who needs it

Any employer who manufactures, assembles, or tests air conditioning, refrigeration, or heating equipment should carry this coverage to protect employees and meet state requirements. Typical buyers include manufacturers, production operators, assembly contractors, and factory service teams. Businesses in adjacent manufacturing lines may look to similar class pages for guidance, such as Furnace, Heater, Radiator Manufacturing Workers Compensation (Class Code 3175) and related operations like Workers Compensation — Electrical Appliance Manufacturing (Class 3570).

What it typically covers

Workers' compensation for class code 3165 usually covers:

  • Medical treatment for work-related injuries and illnesses
  • Partial wage replacement during disability
  • Rehabilitation and vocational retraining when needed
  • Death benefits to dependents in fatal cases

Coverage responds to common manufacturing incidents such as equipment accidents, chemical exposures, and electrical shocks. Employers should also consider complementary risk management policies like commercial general liability to address third‑party claims that workers' comp does not cover.

Common exclusions or limitations

Standard exclusions often include deliberate self-harm, injuries sustained while committing a crime, and claims outside the scope of employment. Some policies limit coverage for occupational illnesses related to long-term exposures unless documented and linked to work. Exclusions and limitations vary by insurer and state; underwriting factors and policy forms determine specific language.

Factors that influence cost

Premiums for class code 3165 are influenced by payroll size, employee job duties, claims history (experience modification), safety programs, and the degree of exposure to chemical, electrical, or machine hazards. Operations with higher automation but poor lockout/tagout practices may still see elevated rates. Improvements in workplace safety, training, and equipment maintenance generally help control costs.

Proof of insurance & compliance

Employers typically provide a certificate of insurance to show workers' compensation coverage when contracting or bidding. Requirements vary by state and by contract; always verify local rules. Maintaining clear records, posting required notices, and documenting safety procedures can help with compliance and underwriting reviews.

How to get a quote

To compare options or request a policy, talk to your agent. When requesting a quote, be prepared to provide payroll estimates, a description of operations, safety programs, and any recent loss history. Insurers will use this information to underwrite risk and determine appropriate limits and premiums.

Frequently Asked Questions

Is workers' compensation required for my manufacturing business?

Requirements vary by state and by business size. Most states require employers with employees to carry workers' compensation; check your state agency or consult an insurance professional for specific obligations.

Does workers' comp cover illnesses from refrigerant exposure?

Workers' compensation generally covers occupational illnesses if the condition is shown to be work-related. Coverage and any limitations depend on medical documentation, exposure history, and the policy wording.

How are premiums calculated for class code 3165?

Premiums are based on payroll, the assigned classification code, experience modification (loss history), state rate multipliers, and any credits or debits from safety programs. Each insurer may weigh these factors differently.

Still have questions? Talk to a local insurance expert.

Partners, Programs & Market Access


We maintain relationships with nationally recognized and specialty-focused insurance providers that actively underwrite this class of business. Our network includes both admitted and non-admitted markets, allowing us to match risks—from straightforward accounts to more complex or hard-to-place exposures—with appropriate underwriting partners.


Program availability, coverage terms, and underwriting appetite can vary based on operations, location, and loss history, so access to multiple markets is key to securing the right fit. This approach helps ensure broader coverage options and more competitive placement across a range of risk profiles.



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