New Construction vs. Service Work: Why Carriers Care What Kind of HVAC Jobs You Do

HVAC new construction insurance is not a separate product. It is the same general liability (GL) policy you already carry, rated and endorsed for a riskier job: work on homes that do not exist yet. Carriers ask for a reason. A bad install can surface as a claim years after you finish. Tract and condo work also draws class-action defect suits.

For an established shop changing its work mix, that one application question carries weight. It moves your price, your endorsements, and sometimes whether a carrier quotes you at all. New construction is often delivered design-build, a model that hands the HVAC contractor design responsibility and professional liability exposure a service shop never faces.

Does HVAC new construction insurance change your coverage?

Yes. HVAC new construction insurance uses the same coverage lines as your service policy, but underwriters rate it for higher exposure and often attach a residential exclusion. Service calls, maintenance, and equipment replacement are preferred business for most contractor carriers. New residential work, especially tract homes and condos, lands in a restricted appetite class that draws surcharges, tighter endorsements, or a flat decline.

The difference comes down to the tail on your work. A technician who swaps a failed compressor creates a short window of risk. An installer who ducts and commissions a system in a brand-new home creates completed operations exposure: claims from your finished work. That exposure can stay open for a decade under some state defect laws. New construction also means crane lifts to set rooftop units, which adds riggers liability exposure while the equipment hangs in the air.

That is why a carrier prices the two kinds of work differently. An HVAC company insurance program gets a fresh look at renewal whenever the job mix shifts toward new construction.

Why do carriers treat new residential construction as higher risk?

Carriers treat new residential construction as higher risk because defect claims cluster there and arrive late. A faulty install on a new home can trigger a lawsuit years after move-in. Completed operations is the coverage on the hook. Multifamily and tract developments add the threat of one defect repeating across every unit, which is how a single mistake becomes a class action.

Much of the construction-defect fight has played out in residential work, especially condos and townhomes, according to IRMI. Some insurers have withdrawn from residential construction entirely, primarily in California, with Arizona, Colorado, Florida, Nevada, Texas, and Washington ranking among the hardest-hit defect states.

The claim tail runs long because state repose laws keep the window open. Texas allows defect suits for 10 years after substantial completion. A 2023 law (HB 2024) drops that to 6 years if the contractor writes minimum warranties into the contract, including a two-year HVAC warranty. Maryland holds an HVAC contractor's window at 10 years under its contractor statute of repose (Md. Cts. & Jud. Proc. §5-108(b)); the longer 20-year Maryland repose applies to the improvement itself, not the trade that installed the work. A builder's insurer that pays a defect claim can then pursue the trade that did the work. Your policy stays reachable long after the job closed.

What is the residential new construction exclusion?

The residential new construction exclusion is an endorsement that strips coverage for bodily injury and property damage arising from covered residential projects. One common form is the Multi-Unit and Tract Housing Residential Exclusion (CG 77 44). It applies to buildings over four residential units, and to housing tracts over eight dwellings under one developer.

The exclusion often reaches routine maintenance and repair too, which is where service contractors get caught. Sign a service contract on a 40-unit condo complex, and a resulting claim can fall outside your policy. You never touched new construction, but the endorsement still applies. Broader versions wipe out all residential work, including apartments; narrower ones cap the number of new home starts a builder can have, per Amwins.

How carrier appetite shifts by the kind of HVAC work you do

HVAC carrier appetite runs on a spectrum from preferred to nearly uninsurable, set by how much of your revenue comes from new residential construction. A shop doing service and light-commercial replacement sits in preferred territory. Add custom homes and you invite surcharges and new-start caps. Move into tract and multifamily work and you may need a surplus-lines carrier that specializes in it.

The real split between service and installation insurance comes down to the tail on the work and who else a claim can pull in. The table shows how a typical contractor carrier reads each kind of job.

None of this is a line you get to pick. The class code and the endorsements a carrier attaches when it sees new residential do the work. For the coverage detail behind each line, our HVAC contractor insurance guide breaks down what a full program includes.

What happens if you misrepresent your HVAC work mix?

Misrepresenting your HVAC work mix can void the entire policy, even when the mistake is honest. Your answers on the application set the classification code that prices the policy. Say you check 'service and repair,' then start new-construction installs without telling the carrier. A claim from that work can be denied and the policy rescinded. The risk the carrier priced never matched the risk it insured.

Courts allow rescission for material misrepresentation with no proof of fraud. An insurer only has to show it would not have written the policy, or would have priced it differently, had it known the truth, per FindLaw. Misclassifying your operations is exactly the kind of fact that clears that bar.

A broker who knows the market handles this in two moves. They disclose the full scope of work on the application, and place the shop with a carrier whose appetite includes new residential. The classification holds when a claim lands. Coverwatch shops the account across carriers that want construction exposure instead of forcing new residential work into a service-only program.

New residential work is not off-limits for an established HVAC company, but it has to be underwritten as what it is. Coverwatch runs work-mix reviews for HVAC contractors as part of its flat-fee contractor insurance practice, so the policy matches the jobs you actually bid.