Equipment Breakdown Insurance: What It Covers, Who Needs It, and How to Place It

Equipment breakdown insurance (formerly called boiler and machinery coverage) fills the single most significant structural gap in commercial property insurance: mechanical and electrical breakdown is not a covered peril under any standard ISO property form. When a compressor seizes, a transformer fails, or a refrigeration unit shorts out, the commercial property policy pays nothing — equipment breakdown coverage is the only policy that responds. For any commercial client whose operations depend on mechanical systems, HVAC, refrigeration, production machinery, or electrical infrastructure, the absence of this coverage creates an uninsured exposure that can exceed the cost of a fire loss.

The Coverage Gap Equipment Breakdown Fills

Standard commercial property forms — ISO CP 00 10 (Basic), CP 00 20 (Broad), and CP 00 30 (Special/Open Perils) — cover a long list of physical loss perils, but mechanical and electrical breakdown is not among them. Under named perils vs. open perils property forms, the Special Form covers "risks of direct physical loss" subject to its exclusions — and the exclusions specifically carve out mechanical breakdown, depletion, deterioration, rust, corrosion, and wear and tear.

This means a $2 million industrial chiller that fails catastrophically due to a motor burnout is simply not covered under the property policy — even if the loss is sudden, accidental, and results in significant business income loss. Equipment breakdown coverage under ISO's Equipment Breakdown Protection (EB 00 20, current edition) — or proprietary carrier forms — is the only mechanism that pays to repair or replace the equipment and indemnify the downstream business interruption.

The coverage gap exists by design, not accident. Property underwriters price property risks based on fire, wind, water, and theft — all external physical perils. Mechanical failure is an internal, equipment-specific risk that requires different underwriting (inspection programs, preventive maintenance programs, engineering loss control) and different pricing. Equipment breakdown insurers maintain engineering loss control programs that property carriers do not.

What Equipment Breakdown Insurance Covers

ISO EB 00 20 defines "covered equipment" broadly and "breakdown" specifically. Coverage triggers when covered equipment suffers a sudden and accidental physical breakdown that requires repair or replacement — not gradual deterioration, not wear and tear, not rust or corrosion.

Covered equipment categories under ISO EB 00 20:

• Pressure vessels and boilers: Steam boilers, hot water heating systems, fired pressure vessels, unfired pressure vessels (including compressed air tanks, autoclaves, and steam lines)
• Mechanical equipment: Pumps, compressors, motors, fans, gears, turbines, and engines used in building systems or production processes
• Electrical equipment: Transformers, switchgear, circuit breakers, rectifiers, motor control centers, and electrical panels
• HVAC systems: Chillers, cooling towers, rooftop units, split systems, and refrigeration compressors
• Refrigeration systems: Walk-in coolers, commercial refrigerators, freezers, and process cooling equipment
• Computer and communications equipment: When included by endorsement — servers, phone systems, network equipment (note: standalone cyber policies cover data loss; equipment breakdown covers the physical hardware)
• Production and processing machinery: CNC machines, conveyors, presses, and manufacturing equipment

Coverage components: Equipment breakdown policies are multi-coverage documents, not single-peril policies:

1. Property damage: Repair or replacement of the broken-down equipment itself, including parts, labor, and associated costs to access the equipment
2. Business income and extra expense: Lost net income plus continuing expenses during the period needed to repair or replace covered equipment — the same calculation as property BI, applied specifically to equipment-caused shutdowns. For industries where equipment lead times are long, this is often the largest component of a claim
3. Spoilage: Physical damage to perishable goods (food, pharmaceuticals, biological materials) resulting from a breakdown of refrigeration or temperature control equipment — coverage that neither property nor BI provides
4. Service interruption: Extends coverage to losses caused by a breakdown of equipment owned by a utility, landlord, or third party that supplies power, heat, or cooling to the insured's premises — a critical extension for tenants who do not own the HVAC or electrical systems serving their space
5. Expediting expenses: Extra costs to temporarily replace equipment or expedite delivery of replacement parts, separate from extra expense coverage
6. Contamination: Spoilage caused by refrigerant leakage — relevant for food processing and cold chain operations

Industries Where Equipment Breakdown Is Not Optional

Equipment breakdown is low-cost relative to other commercial lines but essential in any operation with significant mechanical or electrical dependency. The broker's job is identifying which clients carry real exposure versus which carry negligible risk.

High-priority placements:

• Food service and restaurants: Commercial kitchens run on multiple pieces of refrigeration and cooking equipment. A single walk-in cooler failure can trigger $50,000–$200,000 in spoilage and BI before the kitchen is operational. Most restaurant BOPs offer equipment breakdown as a standard endorsement; the broker's job is confirming it is included and the limits are adequate — see the BOP coverage guide for the full BOP placement checklist
• Grocery and food retail: Cold chain dependency makes spoilage limits a primary concern. Large grocery operations typically require standalone equipment breakdown with dedicated spoilage sublimits rather than the BOP endorsement
• Manufacturing: Production shutdowns caused by CNC machine failure, conveyor breakdown, or press malfunction can generate BI losses that dwarf equipment repair costs. For any manufacturer where a single machine is a bottleneck in the production process, equipment breakdown BI limits should be calculated against actual daily production capacity loss — not just equipment repair cost
• Healthcare and medical offices: Sterilization equipment, laboratory instruments, medical imaging systems, and HVAC systems with infection control requirements all carry breakdown risk with significant BI and extra expense exposure. MRI machine failure alone can produce six-figure BI losses during replacement lead times
• Hospitality and hotels: HVAC failure in a hotel produces guest relocation costs, revenue loss, and reputational harm that equipment breakdown BI and extra expense cover
• Technology companies and data centers: UPS systems, generators, CRAC units, and server hardware are all covered equipment. For technology E&O clients, equipment breakdown coverage for physical hardware is complementary to — not a substitute for — standalone cyber coverage
• Contractors with heavy equipment: Construction-phase equipment is typically covered under contractor's inland marine; installed building systems (HVAC, elevators, generators) installed in a completed or partially completed building may fall under equipment breakdown, depending on policy form and project status

BOP Endorsement vs. Standalone ISO EB 00 20

For smaller commercial accounts (typically under $10M annual revenue, single location, standard equipment profile), equipment breakdown is most commonly placed as an endorsement to the BOP or commercial property policy. For larger, more complex accounts, a standalone Equipment Breakdown Protection policy under ISO EB 00 20 or a carrier proprietary form provides more flexibility.

BOP endorsement: Most BOP carriers offer an Equipment Breakdown Protection endorsement that adds mechanical and electrical breakdown as a covered peril to the BOP property and BI coverage. Endorsement limits typically match the BOP building or business personal property limit, with sublimits for spoilage ($25,000–$100,000 is common). For food service clients, confirm whether the endorsement's spoilage sublimit is adequate — it frequently is not.

Standalone policy: Provides dedicated limits, broader covered equipment definitions, and more granular coverage components including service interruption, off-premises power interruption, and higher spoilage limits. Required for manufacturing clients with complex equipment schedules, clients with unusually high BI exposure relative to equipment value, or clients whose equipment profile requires underwriter-specific review. The standalone policy also allows the broker to submit a detailed equipment schedule to negotiate more precise limits and premiums.

Carrier inspection programs: Many equipment breakdown insurers offer engineering loss control services — free boiler inspections, pressure vessel compliance assistance, and predictive maintenance recommendations — as part of the policy. For clients subject to state boiler inspection requirements (most states mandate annual inspection of covered boilers), the insurer's inspection program can satisfy the regulatory requirement while providing underwriting credit for well-maintained equipment.

Setting Limits and Structuring the Equipment Schedule

The two most common equipment breakdown limit errors are (1) using the property policy building limit as a proxy for equipment breakdown limits without analyzing actual equipment values, and (2) setting business income limits without accounting for equipment-specific restoration timelines.

Equipment valuation: For a standalone policy or BOP endorsement with a dedicated equipment limit, the limit should reflect the replacement cost of the highest-value covered equipment — not total building value. A restaurant with $2M in building improvements and $400K in commercial kitchen equipment needs an equipment breakdown limit that covers the kitchen equipment, not the building. For manufacturing clients, a full equipment inventory with replacement cost values should be submitted with the underwriting submission; many equipment breakdown carriers require this for accounts over $5M in equipment values.

Business income limits: Equipment breakdown BI follows the same calculation methodology as property BI — net income plus continuing expenses during the restoration period — but with a restoration period specific to equipment lead times. As noted in the business income limit-setting guide, lead times for specialized commercial equipment have extended materially since 2020. Custom manufacturing equipment, medical imaging systems, and specialized HVAC can require 12–24 months from failure to replacement. The BI limit should be stress-tested against the realistic worst-case restoration period, not a standard 12-month assumption.

Service interruption limits: The service interruption extension typically has a waiting period (commonly 24–72 hours) before coverage triggers. For clients in areas with aging electrical infrastructure or in markets where the hard commercial insurance market has caused utility-owned equipment to defer maintenance, negotiate a shorter waiting period or confirm the default waiting period is acceptable relative to the client's actual exposure.

For complete guidance on building the property portion of an account that includes equipment breakdown, see the commercial property underwriting submission guide.

Key Exclusions to Explain at Placement

Equipment breakdown coverage has several standard exclusions that affect which losses are covered:

• Wear and tear, depletion, deterioration: Gradual failure — a compressor that has been noisy for six months before it finally stops — is not a sudden and accidental breakdown and will be contested. The coverage responds to sudden, unexpected mechanical or electrical failure
• Fire as cause of breakdown: If fire causes the equipment to break down, the property policy responds (fire is a covered peril). If the breakdown causes a fire, the property policy covers the resulting fire damage; the equipment breakdown policy covers the damaged equipment itself
• Combustion explosion: Explosion of gases or fuel inside a combustion chamber (e.g., a gas furnace explosion) is typically excluded from equipment breakdown and covered under property. Explosion of steam or other pressure is covered under equipment breakdown
• Flood and earthquake: Same exclusions as property — neither standard property nor standard equipment breakdown covers these perils; standalone flood and earthquake endorsements or policies are required
• Consequential loss to products: Spoilage caused by a power outage not resulting from equipment breakdown on the insured's premises is generally excluded unless the service interruption extension is in force

FAQ: Equipment Breakdown Insurance

Does commercial property insurance cover equipment breakdown?

No. Standard ISO commercial property forms — including the Special Form (open perils) — explicitly exclude mechanical breakdown, depletion, deterioration, rust, and corrosion. Equipment breakdown insurance is a separate coverage that must be purchased as a policy endorsement or standalone policy.

Is equipment breakdown the same as boiler and machinery insurance?

Yes — "boiler and machinery" is the historical name for the coverage. ISO updated its forms under the "Equipment Breakdown Protection" branding (EB 00 20), and most carriers now use "equipment breakdown" in policy and marketing materials, but the coverage is the same product.

What is a "breakdown" under ISO EB 00 20?

A sudden and accidental physical breakdown — defined as a physical change in the condition of the covered equipment that causes it to fail to function and that necessitates repair or replacement. The key word is "sudden": gradual deterioration, wear and tear, and slowly developing failures do not qualify.

What does the spoilage coverage under equipment breakdown pay?

It pays for physical damage to perishable property (food, pharmaceuticals, biological materials) resulting from a temperature change caused by a covered equipment breakdown. Most endorsements and policies carry a sublimit on spoilage — confirm the sublimit is adequate for the client's actual perishable inventory, especially for food service and pharmaceutical clients.

What is service interruption coverage?

Service interruption extends equipment breakdown coverage to losses caused by breakdown of equipment that the insured does not own — specifically utility-owned or landlord-owned equipment that supplies power, heat, or cooling to the insured premises. For tenants who rely on building HVAC or landlord-provided utilities, this is a critical extension.

Does equipment breakdown cover the cost of the repair or only replacement?

Both. The policy covers the cost to repair the broken-down equipment or, if repair is uneconomical, to replace it at replacement cost value. Associated costs — labor to access equipment, temporary replacement while repair is pending, and expediting expenses for parts — are typically covered within the property damage component.

Which clients can skip equipment breakdown coverage?

Service businesses with no production equipment, refrigeration, or specialized HVAC (e.g., a sole-proprietor consulting firm) carry minimal equipment breakdown exposure. A professional services tenant in a Class A office building with landlord-provided HVAC and no physical production process may need only a service interruption extension rather than a full equipment breakdown policy.

Arvori helps insurance brokers identify coverage gaps — including equipment breakdown exposures — in commercial accounts and connect with CPAs and other advisors who serve the same clients. If you work with commercial accounts where equipment breakdown is underplaced or missing, Arvori's cross-referral network connects you with the advisors already serving those businesses.