Running an HVAC company in Florida means working in attics in August, on rooftops, around refrigerant and live power, and inside other people’s homes and buildings every day. Your insurance has to follow that work, and so do the contracts you sign with builders, property managers and commercial owners.

This page explains the insurance issues HVAC owners run into most: what the contracts ask for, what a certificate has to show, how workers’ comp and your experience mod work, and what to check before you renew. It’s written for owners of residential, commercial and service HVAC businesses in North Central and Northeast Florida.

What HVAC owners deal with day to day

  • Water damage from your work. A condensate line that wasn’t secured, a clogged drain pan or a cracked fitting can leak into ceilings, walls and floors, sometimes for weeks before anyone notices.
  • Fire and electrical issues. Your technicians work on power wiring and controls for HVAC circuits, and furnaces and heat strips add heat sources.
  • Damage to the customer’s property. Dropped equipment, a foot through a drywall ceiling in the attic or a scratched floor during a changeout.
  • Injuries to your crew. Falls from ladders and roofs, heat illness in attics, cuts from sheet metal, back injuries from lifting condensers and air handlers, and electrical contact.
  • Refrigerant handling. Federal rules require technicians who work on refrigerant systems to be certified and restrict venting refrigerant.
  • Vans full of tools and stock. Service vans, gauges, recovery machines and parts on the truck are exposed to theft and accidents every day.

Typical claims in HVAC work

Without quoting statistics, here is how claims usually show up for HVAC businesses. Water damage from a drain line or a fitting is a common property damage claim, and it often comes months after the job, which is why completed operations coverage matters. Injuries to technicians, especially falls and strains, drive workers’ comp costs. Vehicle accidents with service vans are frequent because your people spend much of the day driving. Theft of tools and equipment from vans and job sites is a regular loss for service companies.

Coverage at a glance

Coverage Why it matters here Learn more
General liability, including completed operations Damage or injury your work causes, during the job and after you leave, such as a leak from a line you installed General liability
Contractors pollution liability Pollution claims from your work, such as a refrigerant release or a fuel spill at a job site, which general liability may exclude or limit Pollution coverage
Workers’ compensation Medical care and lost wages for injured employees, required in construction with one employee Workers’ comp
Commercial auto Service vans and trucks, plus hired and non-owned auto for the business’s liability when employees drive their own vehicles for work Commercial auto
Inland marine (tools and equipment) Gauges, recovery machines, tools and stock on vans or at job sites, which a building policy usually doesn’t reach Ask us about tool and equipment coverage
Commercial umbrella Extra limits above auto, general liability and employer’s liability, often required by commercial contracts Umbrella
Bonds License, permit or contract bonds some jobs and local governments require Bonds
Employment practices liability Claims from employees about hiring, firing, discrimination or harassment EPLI
Cyber Customer payment data and the scheduling and billing systems you depend on Cyber

Pollution exposures and contractors pollution liability

HVAC work touches things an insurance policy may treat as pollution. A few exposures come up often:

  • Refrigerant releases. A leak or accidental release during service, recovery or a changeout. EPA Section 608 rules prohibit intentionally venting refrigerants while maintaining, servicing, repairing or disposing of air conditioning or refrigeration equipment.
  • Mold tied to moisture. Condensation, a clogged drain line or leaky ductwork can let moisture build up, and mold can follow. A customer may blame your work, sometimes long after the job.
  • Older buildings. Some materials in older buildings, such as certain insulation, pipe wrap or floor tiles, may contain asbestos. Cutting, removing or otherwise disturbing them can release fibers into the air.
  • Fuel and oil. Spills from equipment, generators or older oil-fired heating systems, or from your vans, where your commercial auto policy also comes into play.

Standard commercial general liability policies include a pollution exclusion. The wording varies, and it can remove coverage for many claims involving the release of pollutants. The standard exclusion has a few narrow exceptions, but some policies use broader pollution wording that removes most or all of them. Some policies also exclude or limit mold. How a specific claim is handled depends on the policy issued and the facts of the loss.

Contractors pollution liability (CPL) is coverage designed for pollution claims arising from your work. Depending on the policy, it can include bodily injury, property damage, cleanup costs and defense. Depending on the insurance company, it may be written on an occurrence or a claims-made basis, as a separate policy, or combined with general liability or professional liability coverage. Limits, deductibles and coverage for mold, asbestos, lead and finished work vary by policy, and some policies exclude or limit them. General contractors and property owners sometimes require CPL in their contracts.

Questions to ask your agent:

  • What does the pollution exclusion on my general liability say, and does my policy exclude or limit mold?
  • How would a refrigerant release, a mold claim or disturbed asbestos be handled under what I have now?
  • If I add CPL, is it occurrence or claims-made, and if claims-made, what is the retroactive date?
  • Do any of my contracts require pollution coverage, or additional insured status on it?

For more on how pollution policies work, see contractors pollution liability insurance.

What your contracts ask for, in plain words

Most of the insurance questions HVAC contractors face start in a contract, not a policy. Before you sign, read the insurance section and the indemnity section together, because one tells you what you promised to pay for and the other tells you what insurance has to back it up. These are the terms you’ll see most:

  • Minimum limits. The contract lists dollar amounts for general liability, auto, workers’ comp employer’s liability and often an umbrella. Your limits have to meet or beat those numbers on the day you start work.
  • Additional insured. The general contractor or owner wants to be covered under your policy for claims that come out of your work. Many contracts ask for this both while you’re working (ongoing operations) and after the job is done (completed operations), and the endorsement on your policy has to match what the contract says.
  • Waiver of subrogation. After your insurance company pays a claim, it normally has the right to go after whoever caused the loss. A waiver gives up that right against the party named in the contract. It usually takes an endorsement, sometimes on several policies including workers’ comp.
  • Primary and noncontributory. If the contract asks for it and your policy has an endorsement that provides it, your policy pays first for the other party’s covered claim and doesn’t ask their own insurance to share the loss. It isn’t automatic; it takes endorsement wording.
  • Per project aggregate. Some contracts want your general liability aggregate limit to apply separately to each job, so a large claim on one project doesn’t use up the limit for the others.
  • Service agreements. Property managers and commercial owners often use their own maintenance contracts, with indemnity language that can be broader than a builder’s. Read them as carefully as a construction subcontract.

If a contract asks for something your policy can’t do, the time to find out is before you sign. Send us the insurance pages of the contract and we’ll tell you how they line up with your policy and what may need an endorsement. For indemnity and other legal terms, talk with your attorney.

Certificates of insurance: what you’ll be asked for

A certificate of insurance is the one-page summary a GC, owner or property manager asks to see before your crew can start. A certificate is for information only. It doesn’t change or add coverage, which is why careful GCs also ask for copies of the endorsements behind it. Expect requests to show:

  • Policy numbers, dates and limits for general liability, auto, workers’ comp and umbrella
  • The certificate holder’s exact legal name and address
  • Additional insured, waiver of subrogation and primary and noncontributory wording, with the endorsement forms attached when the contract calls for them
  • Workers’ comp coverage, or a copy of the exemption certificate for a qualifying corporate officer or LLC member

Keep one person in your office in charge of certificates, and keep a list of which jobs need updated ones at renewal. You can send requests through our certificate request form.

Workers’ comp for your crew and your subs

Florida treats HVAC installation and repair as construction for workers’ comp. That changes the rules in three ways owners feel directly.

  • One employee is enough. In construction, a business with even one employee has to carry workers’ comp, and an owner who is a corporate officer or LLC member counts unless they’ve filed an exemption. Most non-construction businesses don’t have to until they have four or more employees, full- or part-time.
  • Officer exemptions are narrower. Up to three corporate officers or LLC members who each own at least 10% of the business (three total across affiliated companies) can apply for an exemption through the Division of Workers’ Compensation. It costs $50, lasts two years and is renewed online. An exempt officer or member isn’t covered for their own injuries, so think about health and disability coverage too.
  • You’re responsible for uninsured subs. Under Florida law, if a sub doesn’t have coverage, the contractor above them is treated as the employer of that sub’s workers for comp purposes. That’s why you have to collect each sub’s certificate or exemption before they start, and why it has to stay current for the whole job.

Why audits bring surprise charges

Comp premium starts as an estimate based on the payroll you expect. After the policy ends, the insurance company audits the real numbers. Florida’s audit rules tell auditors to review every source of payment to employees, subcontractors and independent contractors, and to look at the certificates your subs gave you. If a sub can’t show workers’ comp coverage or a valid exemption, Florida law counts the people you paid through that sub as your employees for comp purposes, so the auditor can add those payments to your payroll and charge premium on them. Construction employers large enough to have an experience mod must be audited at least once a year.

Being uninsured is expensive too. The state can issue a stop-work order, and the penalty is two times what the employer would have paid in premium over the prior 12 months, or $1,000, whichever is more.

Report every injury to us or your insurance company right away. Florida requires the employer to report an injury to its carrier within 7 days after learning of it. Read more on our workers’ compensation page.

Your experience mod (EMR): what it is and why GCs ask

If your workers’ comp premium is large enough, your business gets an experience modification factor, often called the mod or EMR. It compares your company’s actual workers’ comp losses with what’s expected for a business of your size doing the same type of work. A mod of 1.00 is average. Below 1.00 is a credit, and above 1.00 is a debit that raises your premium. Small or new businesses that don’t meet the size threshold don’t have one.

Who calculates it in Florida

Florida uses the experience rating plan run by NCCI, the National Council on Compensation Insurance. NCCI calculates the mod, not your agent and not your insurance company. It normally uses three years of payroll and claims, and it leaves out the most recent year before the mod takes effect, because those claims are still too new to judge.

Why it matters when you bid

General contractors, owners and bid packages often ask for your mod, and some use it to prequalify mechanical subs before you’re allowed to bid. A mod above 1.00 can keep you off a bid list even when your price is right, because the GC reads it as a sign of how safely you work.

Why frequency usually moves it more than one big claim

The formula weighs the first part of every claim heavily and only part of the cost above that. So a string of small injuries usually raises a mod more than one large one. Under NCCI’s experience rating plan, a medical-only claim (one with no lost-time benefits) generally counts at only 30% of its cost in your mod where NCCI’s Experience Rating Adjustment applies. Report every injury, even small ones. Florida requires employers to report an injury to their insurance company within 7 days of learning of it, and paying a claim yourself instead of reporting it can put you out of compliance and leave the worker without benefits the law gives them. Where the ERA applies, medical-only claims already count at a reduced value in the mod, so there’s little reason to pay them yourself.

What you can do about your mod

  • Run a written safety program that fits your actual work, and hold short, regular crew talks, for example on ladder and roof safety, heat illness and lifting
  • Report every injury the same day, so the claim is handled before costs grow
  • Offer light or modified duty so injured workers can come back sooner, since lost-time claims usually cost more than medical-only ones
  • Ask us for your mod worksheet each year and check it: wrong payroll, a claim that isn’t yours or a closed claim still showing reserves can all push the number up
  • Make sure each employee is in the right class code and your payroll is reported correctly, because the mod is built on those numbers

Want to go deeper? Our experience mod guide explains which years count, why small claims add up and how to read your mod worksheet.

Vans, tools and equipment

Your vans need commercial auto coverage in the business name, and the policy should list every vehicle and every driver who uses one. If employees drive their own vehicles for work, hired and non-owned auto coverage can respond, subject to the policy’s terms and limits, if your business is held responsible for an accident they cause. The employee’s own auto policy usually pays first, and this coverage doesn’t pay for damage to the employee’s car or protect the employee personally. We explain more in our post on employees driving personal vehicles.

Tools, gauges and parts on a van are not usually covered by a building or business property policy once they leave your shop. An inland marine policy, sometimes called a tool floater or contractor’s equipment policy, is built for property that moves. Keep a current list with serial numbers and photos, and set the limit to what it would cost to replace everything on your worst day.

Florida licensing and bonds

Florida licenses air-conditioning contractors through the Construction Industry Licensing Board. A Class A license has no size limit. A Class B license is limited to 25 tons of cooling and 500,000 Btu of heating in any one system. Class C, a servicing license, hasn’t been issued to new applicants since 1988. The board also licenses mechanical contractors. Air-conditioning licenses don’t cover gas fuel lines inside buildings, other than disconnecting and reconnecting gas appliances during a changeout, and they don’t cover potable water lines, sewer lines or pool piping. Check your exact scope before you bid work at the edge of it.

Certified and registered contractors have to carry general liability and property damage insurance in minimum amounts set by board rule, and show workers’ comp coverage or an exemption. Some cities, counties and project owners also require license or permit bonds.

See Florida contractor license insurance and bond rules for the minimum amounts, audits and bond rules.

Practical risk management steps

  • Photograph the attic, ceiling and drain path before and after every install, and note anything that was already damaged
  • Use float switches or secondary drain pans where the code or the equipment calls for them, and document it on the ticket
  • Train crews on heat illness: water, rest, shade and acclimatizing new workers
  • Inspect ladders before use and set them up the way the manufacturer intends
  • Lock out and tag out circuits before working on them
  • Keep refrigerant certifications on file for each technician
  • Run motor vehicle record checks on every driver before they get keys, and again each year

Questions to ask before you renew

  • Does my general liability include completed operations, and does it have any exclusion for water damage or mold that would affect HVAC work?
  • Do my additional insured endorsements cover both ongoing and completed operations, the way my contracts require?
  • Is every van and every driver listed correctly, and do I have hired and non-owned auto?
  • Does my tool and equipment limit match what’s on the trucks today?
  • What is my experience mod for the coming year, and does the worksheet look right?
  • Are my class codes and payroll estimates correct for the work we actually do?
  • Do my umbrella limits meet what my largest customers are asking for?

Frequently asked questions

Does my general liability cover water damage from a leak after we finish a job?

Usually that’s a completed operations claim, which most contractor general liability policies include. Some policies have exclusions or limits for certain kinds of water damage or mold, so check yours before you need it.

Do I need workers’ comp if I only have one technician?

Yes, in most cases. Florida treats HVAC work as construction, and construction businesses have to carry workers’ comp with one or more employees. Corporate officers or LLC members who qualify can apply for an exemption for themselves.

What is an experience mod and why does a GC want mine?

It’s a number NCCI calculates from about three years of your workers’ comp payroll and claims, leaving out the most recent year. 1.00 is average. GCs use it to judge how safely you work, and some won’t let subs bid above a set number.

Are tools on my service vans covered by my auto policy?

Usually not. Auto insurance covers the vehicle. Tools and equipment are normally covered under an inland marine or tool and equipment policy.

What does additional insured mean on my certificate?

It means the GC or owner can get coverage under your policy for claims caused by your work, within the limits of the endorsement. The endorsement on your policy, not the certificate, decides what that coverage is.

Do my technicians need refrigerant certification?

Under EPA Section 608, technicians who maintain, service, repair or dispose of equipment that could release refrigerants have to be certified.

What happens if a sub I hire doesn’t have workers’ comp?

Under Florida law, the people you paid through that sub count as your employees for comp purposes, and the auditor can add those payments to your payroll and charge premium on them. Get a current certificate or exemption before they start.

Sources

General information, not legal or coverage advice. Coverage depends on the policy issued, its terms and underwriting, and contract requirements depend on the contract you sign. Check licensing and safety rules with the agency that enforces them.

McGriff-Williams Insurance is an independent insurance agency in Gainesville, in business since 1983 and licensed in Florida. We’re at 3501 W University Ave, Gainesville, FL 32607. Questions: (352) 371-7977, Monday to Friday, 9 a.m. to 5 p.m.

Last updated October 31, 2026