A standard commercial property policy will not pay when your equipment fails from the inside — a boiler cracks, a compressor burns out, an electrical surge fries a control panel — because property forms specifically exclude mechanical and electrical breakdown. Equipment breakdown coverage (historically called boiler and machinery insurance) is the separate coverage that fills that exact gap, paying to repair or replace the failed equipment plus the spoilage, lost income, and extra expense the breakdown sets off.

Most owners assume “property” insurance covers the building and everything in it, full stop. It does not. Fire, wind, and water are covered; the equipment failing on its own is carved out by an exclusion almost nobody reads. This article explains what the property form actually excludes, what equipment breakdown coverage adds back, how it handles perishable stock spoilage, and why an off-premises power outage — the kind Iowa businesses know well — can trigger it.

• What does a commercial property policy exclude when equipment breaks down?
• What does equipment breakdown coverage actually cover?
• How does equipment breakdown coverage handle spoilage?
• What about off-premises power outages?
• How does Avanti Group make sure the breakdown gap is closed?

What does a commercial property policy exclude when equipment breaks down?

Property policies are built to respond to external causes of loss — something hits the building. They are not built to respond to a machine wearing out or shorting from within, and the policy language says so plainly.

Nearly every commercial property form contains a mechanical breakdown and electrical injury exclusion, meaning a loss caused by the equipment’s own failure — not by a covered peril like fire — is not covered under the base property policy. That single exclusion is why a commercial property insurance policy can be fully paid up and still leave an owner with a five-figure repair bill when a rooftop chiller seizes or a transformer arcs. It is the same category of fine print our guide to policy sublimits, exclusions, and conditions is built to surface — the clauses that quietly decide what actually pays.

The distinction the adjuster draws is cause. If a fire damages a motor, the property policy responds, because fire is a covered peril. If the same motor burns out because a bearing failed or a power surge hit it, that is excluded breakdown — a different cause, a different policy. Knowing which policy owns which cause of loss is exactly the kind of structure a sound commercial insurance program is supposed to make visible before a claim, not after.

What does equipment breakdown coverage actually cover?

Equipment breakdown coverage is the modern successor to boiler and machinery insurance, broadened well past boilers to cover the mechanical, electrical, and pressurized systems a business runs on.

Equipment breakdown coverage pays for the sudden and accidental physical damage that happens when covered equipment fails internally — including the cost to repair or replace the equipment, plus resulting damage, lost business income, extra expense, and in many forms spoiled stock. Covered equipment typically spans HVAC and refrigeration systems, electrical panels and transformers, boilers and pressure vessels, pumps and motors, elevators, and increasingly the computerized controls and production equipment a business depends on.

It usually shows up as an endorsement to the property policy or as part of a businessowners (BOP) package, which is why it is easy to miss — it lives on the same declarations page as the rest of the property coverage, often as a single line item. The valuation basis matters as much here as it does for the building: equipment breakdown can be written to repair or replace at replacement cost or only at depreciated actual cash value, the same fork in the road covered in our piece on replacement cost versus ACV on commercial property. On aging mechanical systems, an ACV settlement on a failed unit can fall far short of the cost to put a new one on the roof.

How does equipment breakdown coverage handle spoilage?

For any business that keeps stock cold, the equipment failing is not the whole loss — it is the trigger for a second, often larger one.

Most equipment breakdown forms include spoilage coverage, which pays for perishable goods that are lost when covered refrigeration or climate-control equipment breaks down — the inventory ruined, not just the compressor that ruined it. A restaurant, grocer, florist, pharmacy, or food processor can lose a walk-in cooler’s entire contents in a single afternoon when a refrigeration unit dies, and the spoiled product frequently costs more than the part that failed.

This is where the coverage earns its keep, because spoilage sits squarely in the gap between policies. The property form excludes the breakdown that caused it, and a general liability policy has nothing to do with it. Without equipment breakdown coverage written to include spoilage, the owner absorbs both the repair and the ruined inventory. Reading the spoilage sublimit and any time-element waiting period is essential — the limit is often well below the value of a full cooler at peak inventory.

What about off-premises power outages?

The most common equipment breakdown trigger in the Midwest is not a machine on your own property at all — it is the power going out somewhere upstream.

Off-premises power, or utility service interruption coverage, extends equipment breakdown to losses caused when a utility’s equipment fails away from your premises — a transformer or substation breakdown that cuts your power and spoils your stock or halts your operation. It is not automatic. Service interruption is typically an optional add-on, and it often carries its own waiting period before business income and spoilage losses begin to count.

Iowa owners have a vivid reference point. The August 2020 derecho knocked out power to hundreds of thousands of utility customers across the state, some for more than a week, and businesses without service interruption coverage on their equipment breakdown form ate the spoilage and downtime themselves. A prolonged outage is also where equipment breakdown overlaps with business income and extra expense coverage — the breakdown form can pick up income lost specifically because covered equipment (yours or the utility’s) failed, which is a narrower and different trigger than the all-perils business interruption coverage on the property side.

How does Avanti Group make sure the breakdown gap is closed?

At Avanti Group, equipment breakdown is never assumed to be “in there somewhere.” Before recommending a property program, the firm runs a Business Risk Diagnostic™ — inventorying the mechanical, electrical, and refrigeration systems a business actually depends on, confirming whether equipment breakdown is on the policy and at what valuation basis, checking the spoilage sublimit against real peak inventory values, and adding off-premises service interruption where an outage would stop the operation cold.

That sequence — find the dependency, confirm the coverage, size the sublimit, then talk about price — is the difference between a commercial property program that funds a failed chiller and a ruined cooler in full and one that looks complete until the compressor quits. It is the same discipline that runs through every commercial insurance program the firm builds: the cheapest gap today is almost always the most expensive surprise tomorrow, which is exactly why we anchor the conversation in total cost of risk rather than premium alone, and pressure-test it against cluster siblings like the 80% coinsurance rule on the same property account.

Frequently Asked Questions

Isn’t equipment breakdown already covered by my property insurance?

No. A standard commercial property policy contains a mechanical breakdown and electrical injury exclusion, so a loss caused by equipment failing on its own — a burned-out motor, a cracked boiler, a surged control panel — is carved out of the base property coverage. The property form responds when an external covered peril like fire or wind damages the equipment; it does not respond when the equipment fails internally. Equipment breakdown coverage is the separate coverage, usually added by endorsement, that fills that specific gap.

What is the difference between equipment breakdown and boiler and machinery insurance?

They are essentially the same line of coverage under two names. “Boiler and machinery” is the older term, dating to when the coverage centered on pressure vessels and boilers. “Equipment breakdown” is the modern name and reflects a much broader scope — HVAC and refrigeration, electrical systems, pumps and motors, elevators, and computerized controls and production equipment. If you see either term on your declarations page, it is the coverage that responds to internal mechanical and electrical failure.

Does equipment breakdown coverage pay for spoiled inventory?

Most forms include spoilage coverage, which pays for perishable goods lost when covered refrigeration or climate-control equipment breaks down — the ruined inventory, not just the unit that failed. This matters most for restaurants, grocers, pharmacies, florists, and food processors, where a single refrigeration failure can destroy a walk-in cooler’s entire contents. Check the spoilage sublimit and any waiting period, because the sublimit is often set well below the value of a full cooler at peak inventory.

Does it cover a power outage caused by the utility company?

Only if you add it. Off-premises power, or utility service interruption coverage, extends equipment breakdown to losses caused when the utility’s equipment fails away from your premises and cuts your power. It is typically an optional add-on with its own waiting period before spoilage and business income losses begin to count. After events like the 2020 Iowa derecho, many owners learned the hard way that without service interruption coverage, an upstream outage leaves the spoilage and downtime on them.

How do I know if equipment breakdown is on my policy?

Look at your declarations page for a line referencing equipment breakdown or boiler and machinery, and check whether it lists a valuation basis (replacement cost vs. actual cash value) and any spoilage or service-interruption sublimits. Because the coverage often appears as a single endorsement line, it is easy to overlook. If you cannot find it, or cannot tell what it covers, that is exactly the kind of gap a coverage review is built to catch before a breakdown does.

Related reading

Other articles in the Commercial Foundations series:

• Business Income and Extra Expense: The Loss Most Policies Quietly Underfund — Business income coverage replaces the net profit and continuing expenses a business loses while a covered physical loss suspends operations, and extra expense pays the added cost of reopening faster; the usual shortfall is not a low premium but a limit and a period of restoration never sized to how long the doors would actually stay closed — fix it with a business income worksheet, a realistic period of restoration, and an extended period of indemnity for the post-reopening revenue ramp.
• Building Ordinance and Law Coverage: What Triggers It and What It Pays — A standard commercial property policy pays only to restore a building to its pre-loss condition, so on an older building the code-driven cost of a rebuild — demolishing undamaged sections the code no longer allows you to keep, and upgrading wiring, sprinklers, accessibility, and structure to current standards — falls on the owner unless ordinance and law coverage is in place; it is written in three parts (Coverage A for the undamaged portion, B for demolition, C for increased cost of construction), and the usual failure is a token Coverage B and C sublimit carried forward year after year while the real code-upgrade cost runs into six figures.
• Replacement Cost vs ACV vs Functional Replacement on Commercial Property — Replacement cost rebuilds with new materials, actual cash value pays the depreciated number, and functional replacement cost rebuilds to an equivalent use — the valuation method on the declarations page, not the limit alone, decides what a property loss actually pays, and post-2021 construction-cost inflation has left many Iowa buildings underinsured against today’s rebuild cost.
• The 80% Coinsurance Rule: How to Avoid the Penalty — The commercial property coinsurance rule requires insuring a building to a set share of replacement cost — usually 80%, sometimes 90% or 100% — and a limit below that threshold triggers a proportional penalty that trims the claim check even on ordinary partial losses; you avoid it by meeting the requirement or attaching an agreed value endorsement, and by revaluing every year as post-2021 construction-cost inflation keeps pushing Iowa building limits below today’s rebuild cost.
• Off-Premises Power Outage and Dependent Business Interruption — Standard business income coverage requires direct physical loss at your own premises, so the outage that starts at the utility or the shutdown at a supplier your revenue depends on closes the business without triggering the policy — off-premises service interruption coverage and dependent (contingent) business interruption coverage answer those losses, subject to waiting periods, sublimits, cause-of-loss alignment, and the commonly excluded overhead transmission lines.