When something fails on a job, reviewing contract language is rarely the first priority – fixing the problem is. But when things go wrong, whether it’s a refrigerant leak or a system failure, the contract is what decides who owns the problem.

Most contracts look similar, which makes them easy to skim or rush through. That’s where risk creeps in. Small wording differences can have outsized consequences. Contractors are highly detail-oriented when it comes to diagnosing system issues, but that same discipline does not always carry over to contract review. Too often agreements get signed without a full understanding of the exposure they create.

Consider a familiar scenario. An HVAC system is installed and commissioned without issue. Weeks later, humidity levels spike and damage tenant equipment. The property owner files a claim. Part of the work was subcontracted, and responsibility is no longer clear. What follows is often a slow, costly dispute.

At that point, the contract either holds up, or it doesn’t.

A well-structured contract creates clarity upfront. It defines roles, aligns expectations, and allocates risk before anything goes wrong. Most contractors want that protection but aren’t always sure where to focus.

There are five areas that deserve specific attention:

1. Defining A Clear Scope of Work

If the scope is vague, expectations can become negotiable after the fact.

The scope of work should clearly define what is included and what is not. That means outlining timelines, pricing, payment terms, and materials. Just as important, it should identify exclusions. Electrical upgrades or existing ductwork issues, for example, should not be left open to interpretation.

Clarity on the front end helps avoid disputes later, particularly around assumed responsibilities or claims of incomplete performance.

2. Indemnification Provisions

Indemnification is one of the most important risk allocation tools in a contract.

It determines who bears the financial responsibility when something fails due to error, omission, or negligence. If a subcontractor causes a system issue, a well-drafted indemnification clause should make it clear that responsibility stays with them.

Without it, liability can shift in unexpected ways, often after the damage has already occurred.

3. ‘Hold harmless’ Language

Hold harmless provisions are closely related to indemnification, but they are not always interpreted the same way.

At a high level, these clauses are intended to protect one party from the downstream impact of a claim, including legal costs and damages. However, definitions and enforceability can vary by state.

Because of that variability, it is important not to assume these provisions provide full protection without confirming how they are treated in the relevant jurisdiction.

4. Limitation of liability

A limitation of liability clause sets a cap on financial exposure.

Without one, relatively small errors can result in disproportionately large losses. For example, a contractor performing routine maintenance on a modest contract could otherwise be exposed to a much larger property damage claim.

This clause helps ensure that financial responsibility remains proportionate to the scope and value of the work performed.

5. Change order procedures

Projects rarely proceed exactly as planned. Unforeseen conditions and evolving requirements are common, particularly in HVACR work. Without a formal process for managing changes, scope creep can occur quickly, leading to disputes over additional work, cost, and timing.

Clear, agreed-upon change order procedures create transparency and reduce the likelihood of disagreements as the project evolves.

Contracts and Insurance Work Together

HVACR work carries inherent risk, and appropriate insurance coverage is essential. General liability and professional liability policies are foundational protections against property damage, injury, and claims of negligence or design error.

But insurance alone is not enough.

Contracts serve as another key form of risk management. A clearly defined scope of work, effective indemnification and hold harmless provisions, appropriate liability limits, and structured change management all help reduce exposure before a claim arises.

In practice, negotiating contract terms upfront is far simpler than resolving disputes after the fact.

Setting clear terms at the outset supports stronger partnerships, reduces the likelihood of conflict, and provides a more predictable path forward when issues arise.

For specific legal considerations, contractors should always consult qualified counsel before finalizing agreements.

Nick Sinkus is the chief underwriting officer at Hiscox USA, a leading insurer for more than 600,000 small businesses. With more than 20 years of experience in personal and commercial underwriting — ranging from small commercial to middle market — he leads all aspects of underwriting and product strategy. 

Legal Disclaimer: The following content is for general informational purposes only and is not intended to convey legal advice. If you have any legal questions regarding contract negotiations, you should consult an attorney.