Mechanical contracting has two signature claims and they run in opposite directions. Fire goes up — a brazing torch in a wall cavity, a smolder nobody sees, a building alarm at two in the morning. Water goes down — a condensate line that was never pitched, a pan with no float switch, and a tenant suite on the floor below.
Price follows from your own numbers, not from a rate card. Workers' compensation is payroll × class rate × your experience mod. General liability is usually rated on receipts or payroll. Which is why quoted averages for "HVAC insurance" tell you almost nothing about what your program should cost.
Within a hundred miles of Statesboro there are a lot of mechanical shops: residential change-out and service companies in Statesboro, Glennville, Claxton and Swainsboro; light commercial contractors working Savannah, Pooler, Richmond Hill and Hinesville; plant and process mechanical outfits serving the manufacturing corridor along I-16 and the port; refrigeration companies servicing grocery, food processing and cold storage; and a growing number of shops adding controls, VRF and heat pump work without revisiting how any of it is classified or insured.
They are good accounts — recurring service revenue, real assets, owner-operated. Many of them are also carrying a program assembled around price years ago, with a class split that no longer matches what the crews do and an umbrella that doesn't schedule the policies their subcontracts require.
| Driver | Why it moves the premium | What you can do about it |
|---|---|---|
| Class code split | Installation, service, sheet metal and shop fabrication rate differently | Keep payroll records that can support a split before requesting one |
| Experience mod | Multiplies the whole comp premium, in either direction | Close claims, run light duty, verify the payroll behind the calculation |
| Hot work discipline | Fire is the severity claim — the permit process is the control | Written permit, posted fire watch, documented and retained |
| Water loss frequency | Condensate and piping claims reprice accounts for years | Float switches, pitch and trap standards, start-up checklists |
| Work mix | Residential service, commercial rooftop, boiler, refrigeration and process piping price differently | Describe it precisely — vagueness gets priced as the worst case |
| Contract-required limits | GC and property manager subcontracts drive umbrella and endorsements | Gather your requirements before renewal |
| Fleet and MVRs | Service vans, technicians and driving records drive the auto line | Written driver standard, MVRs pulled on a schedule |
| Subcontracted labor | Uninsured subs get charged back to you at audit at your rate | Collect certificates continuously, not when the auditor calls |
Most HVAC contractors are governed by the plumbing-and-heating class family — commonly 5183 for plumbing, heating and air conditioning installation, with service-and-repair classes such as 5187 and sheet metal and duct classes such as 5538 and 5535 applying depending on how the work is performed and how the state rating authority treats it. Shops doing refrigeration, boiler work, process piping or industrial mechanical installation may pick up further classes, and shop fabrication payroll frequently rates differently than field payroll.
This cuts both ways, which is what makes it worth an hour of your time:
The rule that decides it is unglamorous: you cannot get a split you cannot document. Payroll records have to separate the work before an auditor will. Our class code lookup guide covers the mechanics, and the Georgia contractor comp page covers how the rate gets built. Class assignment is ultimately determined by the carrier and auditor on the facts, under the rules of the applicable rating authority.
Brazing a line set inside a wall. Soldering next to kraft-faced insulation. Cutting with a torch in an occupied building. Welding on a rooftop over a membrane roof. All routine — and occasionally one of them ignites something out of sight that smolders for hours after the truck leaves.
Underwriters do not price the torch. They price the procedure around it, and the questions are specific:
A contractor who can answer those in writing gets schedule credit, gets more carriers willing to look, and — the part nobody thinks about at bind time — has a defense when a property carrier's subrogation unit asks what precautions were taken. Documentation is worth money twice.
Water is the frequency claim in mechanical work. A condensate line never properly pitched or trapped. A secondary pan with no float switch. A coil connection that weeps for weeks. A hydronic line that fails behind finished work. A valve left open at start-up.
When that water damages the building, its contents or a tenant space below, that is resulting property damage — generally the kind of loss general liability is built to address, subject to policy terms. What general liability generally does not pay for is correcting your own defective work. Re-brazing the joint, replacing the badly run condensate line, redoing the piping: that is yours, under the your-work and impaired-property provisions of a standard form.
The practical shape of it is ugly and familiar. A five-hundred-dollar installation mistake produces a covered water claim in a finished space, an uncovered rework bill, a deductible, and a loss on your record that reprices the account for the next three renewals. Read the your-work language as actually issued — it varies by form edition — and treat float switches and a start-up checklist as premium controls rather than jobsite housekeeping.
Environmental exposure in this trade is broader than most shops assume, and much of it sits at the edge of the pollution exclusion:
Contractors pollution liability is the coverage written for that gap, and it is inexpensive relative to the size of the loss it answers. Read your GL's pollution exclusion before assuming any of the above is covered.
Recurring maintenance revenue is the best thing about a mechanical business and the least examined part of its risk. Three issues recur:
Agreements also dictate limits, additional insured status, primary and non-contributory wording, waiver of subrogation and notice provisions. Gather those before renewal, not when a certificate gets rejected the week you're supposed to mobilize.
Two cautions that apply to every trade and get ignored in all of them: the endorsement is the coverage, the certificate is a receipt; and if school, municipal or DOT mechanical work is in your future, bonding capacity becomes its own conversation — see BettrBonds and the bid, performance and payment bond explainer.
Subcontractor certificates. If you hire out crane work, insulation, electrical tie-in, sheet metal, or a helper working through his own LLC and can't produce a certificate at audit, that payroll is typically charged back to you at your rate. Our certificate tracking page covers the process, and the 1099 subcontractor question is live in every trade right now. Watch for subs carrying a ghost policy — it satisfies a certificate request and covers none of their employees.
Overtime records. In many jurisdictions the excess portion of overtime pay may be excluded from comp payroll if the records show it separately. Emergency service and after-hours calls make this a bigger number in HVAC than in most trades. The same payroll discipline that supports an overtime deduction supports a class split — one clean system pays for itself twice.
Bettr Coverage is an independent commercial insurance agency serving Georgia and the wider Southeast. Mechanical work is a trade where the gap between a cheap program and a sound one lives entirely in details nobody reads: the classification split, the your-work language, the completed-operations aggregate, whether the umbrella schedules what your service agreements demand. On a mechanical review we read the class split against what the crews actually do, check whether hot work and water controls are getting you credit, look at what your maintenance agreements obligate you to versus what any policy will pay, and price the whole program together instead of one line at a time. One agency, one relationship, all of it read at once.
Send your declarations pages, your comp classification breakdown and one service agreement. We'll tell you where your payroll is misclassified, what your policy will and won't pay after a water loss, and whether your umbrella satisfies the contracts you've already signed.
Get a free coverage reviewNo single credible number. Comp is payroll × class rate × experience mod; GL is usually rated on receipts or payroll. Class split, mod, work mix, contract-required limits, subcontracted labor, fleet, tool values and loss history all move it. Price your actual figures rather than comparing averages.
Usually the plumbing-and-heating family — commonly 5183 for installation, with service classes such as 5187 and sheet metal/duct classes such as 5538 and 5535 depending on the work and the state. Refrigeration, boiler and process piping can add classes, and shop payroll often rates differently than field payroll. You can't get a split you can't document.
Because fire is the severity claim and it usually starts at a torch. Carriers price the procedure: written permit, authorized issuer, posted fire watch after work stops, staged extinguishers, cleared combustibles, retained documentation. That paperwork earns credit at renewal and defends the subrogation claim later.
Generally yes for resulting damage to the building, contents or the space below, subject to policy terms — and generally no for correcting your own defective work. Re-brazing the joint or redoing the condensate line falls under your-work and impaired-property provisions. Read the language as actually issued.
Indemnity broader than any policy will pay; monitoring, diagnostics, IAQ assurance or design recommendations that trigger the professional services exclusion; and guaranteed-uptime clauses that create consequential-loss exposure with no coverage behind them. Contract wording controls — review before signing.
Refrigerant release, ammonia at refrigeration and food processing sites, fuel and oil spills, asbestos disturbance on old pipe and duct, mold following a system failure, and carbon monoxide from combustion equipment. Much of that sits inside or at the edge of the GL pollution exclusion; contractors pollution liability is the coverage written for it.
Tools and equipment floater, installation floater, hired and non-owned auto, an adequately scheduled umbrella, contractors pollution, and cyber. Add professional liability where design, controls or performance guarantees are involved, and rented equipment coverage for lifts and cranes.
For general information only. Not legal advice and not a quote or contract of insurance. Policy forms, endorsements, sublimits and exclusions vary by carrier and form edition — your-work and impaired-property provisions, products-completed operations aggregates, pollution exclusions, professional services exclusions, additional insured endorsement scope on an ongoing versus completed operations basis, primary and non-contributory and waiver of subrogation wording, and umbrella scheduling must all be read as actually issued. Workers' compensation classifications, rates, experience rating and payroll rules including any overtime treatment are set by NCCI or the applicable state rating authority and by carrier filings, and are amended; class assignment is determined by the carrier and auditor on the facts of the operation. Mechanical and HVAC licensing, permitting, code, refrigerant handling and workplace safety requirements are set by federal, state and local authority and are amended; confirm your obligations with the applicable authorities. Coverage subject to policy terms, conditions, exclusions and carrier appetite.