When a fire repair estimate misses electrical or HVAC damage

Quick answer

Fire estimates frequently focus on what is visible, so wiring, panels, ducts, and equipment hidden in walls and attics can be missing or underscoped. Ask for inspections by qualified, licensed professionals, such as an electrician and an HVAC contractor, get their findings in writing, and compare them line by line with the carrier’s estimate. Submit the gaps as a documented supplement, and keep every report, photograph, and permit record together.

A fire repair estimate can look thorough and still leave out the parts of the house that make it work. Wiring, the electrical panel, ducts, furnaces, air handlers, and plumbing are often hidden behind walls, above ceilings, and in attics and crawl spaces, so they are easy to miss on a walk-through. When they are missed, the shortfall usually appears later, in the middle of repairs, when it is harder to fix. This guide explains why these gaps happen and how to document and raise them in an organized way.

Why estimates miss what is behind the walls

An initial estimate is usually built from what an estimator can see and measure on a site visit: burned framing, charred surfaces, damaged drywall, and visible soot. Systems that run through walls and ceilings are not visible, and unless someone tests them, they are treated as intact. Time pressure, a large claim with many rooms, and the carrier’s preference for a faster settlement can all contribute. The result is an estimate that prices the visible repair but leaves little or nothing for rewiring, system replacement, or testing. The difficulty is not necessarily bad faith. A visual estimate simply cannot answer questions that require instruments and trade expertise. Recognizing this limitation at the outset helps you plan: request a specialist inspection early, ask that findings be written down, and treat the first estimate as a starting point that may need to be supplemented as more information is gathered about hidden conditions.

What fire, heat, smoke, and water do to electrical systems

Electrical systems can be affected in several ways even when they are not directly burned. Heat can degrade the insulation on wires, making them brittle or damaged in ways that are not visible and that may create a safety risk later. Smoke and soot can settle in outlets, switches, junction boxes, and the electrical panel, and some residues can be corrosive. Water used to fight the fire, or water that enters the building afterward, can reach devices and connections and cause corrosion or short circuits. Panels, meters, breakers, fixtures, and low-voltage wiring for alarms, security, and data can all be affected. Because the effects may not show up until the power is restored or until corrosion develops over time, a visual check is not enough. A licensed electrician can test circuits, inspect panels and boxes, and recommend what must be repaired or replaced for the system to be safe, which is information the estimate needs to reflect.

Qualified inspections and what the report should say

When the estimate is missing electrical work, request an inspection from a licensed electrician who is qualified to evaluate fire-affected systems. Ask that the findings be provided in writing. A useful report identifies the areas inspected, what was tested and how, what conditions were found, and what work is recommended, with enough detail that someone else can price it. Ask the electrician to note any conditions that would require work under local code when the area is repaired. Keep photographs the inspector takes, as well as your own. Do not rely on a verbal statement or a short note. Share the report with the insurer and ask the carrier to review it and respond in writing. If the company has its own electrical consultant, request a copy of that report and the basis for any differences. Qualified inspections are inexpensive relative to the risk of closing walls over conditions that were never examined.

HVAC damage: ducts, equipment, and contamination

Heating and cooling systems face several kinds of exposure. Equipment located near the fire can be damaged directly by heat. Ductwork can be contaminated with smoke and soot because the system draws in and circulates air, and a system running during or after the fire can spread contamination well beyond the fire area. Air handlers, coils, blowers, filters, insulation on ducts, and controls can all be affected, and the outdoor unit can be damaged by heat, falling debris, or water. Whether components can be cleaned or must be replaced depends on the type of system, the extent of contamination, and the manufacturer’s guidance, so ask a qualified HVAC contractor to inspect and give a written recommendation for each component. If ducts are cleaned, ask what method was used and whether the work was verified afterward. If the estimate includes only a general duct cleaning allowance, ask how that amount was determined and whether it matches the contractor’s scope.

A single-family home exterior
Photo: Unsplash

Other systems that are easy to overlook

Beyond wiring and air systems, other building systems may need attention after a fire. Plumbing supply and drain lines can be damaged by heat, particularly plastic piping and fittings in walls and attics. Gas lines, valves, and appliances require inspection by a qualified professional before they are used again. Water heaters, furnaces, and other appliances may have been exposed to heat, smoke, or water. Smoke and carbon monoxide detectors, security systems, doorbells, thermostats, garage door openers, and similar low-voltage devices are often forgotten but can be damaged and are part of the property. Solar equipment, outdoor lighting, and detached structures may also be involved. Create a simple room-by-room and system-by-system checklist and compare it with the estimate. Each item that is not addressed is a question to ask, and each answer, whether the item was found sound or in need of repair, should be recorded in writing.

Repairing fire damage often triggers requirements that were not part of the original construction. When walls are opened and systems are repaired or replaced, local building departments may require that work meet current codes, which can add cost for items such as wiring methods, protection devices, or equipment standards. Some policies include coverage for increased costs from enforcement of building ordinances, sometimes through an optional endorsement or an additional coverage with its own limit, and the wording determines when it applies. Ask your insurer in writing whether ordinance or law coverage is part of your policy and how it is calculated. Permits and inspections may also carry fees, and the contractor should be able to explain which are required. Keep copies of permits, inspection results, and any notices from the building department, since they show why additional work was necessary and support a request to include it in the claim.

Presenting the gap as a documented supplement

When a qualified inspector finds work that the estimate omitted, present it as a supplement rather than a complaint. Assemble the inspector’s written report, photographs, a contractor estimate for the additional work, and any code or manufacturer references. Prepare a short cover letter that identifies each missing item, shows where it appears in the estimate or that it does not, and explains what evidence supports it. Ask the carrier to review the supplement and respond in writing, and keep track of the date it was sent. Request a reinspection if the company wants to verify conditions, and be available to open walls or access attics when that is practical. Keep the supplement organized by system so the reviewer can follow it. Where the carrier declines an item, ask for the specific reason and the policy provision it relies on, and respond to that reason with additional evidence. Deadlines and handling requirements vary by state, so confirm them with your state’s department of insurance.

How a public adjuster helps with missing systems

A licensed public adjuster works for you, not the insurer, and a claim with hidden systems is well suited to careful review. They can compare the carrier’s estimate against inspection findings, identify omitted systems, help you gather the right specialist reports, price the additional work, and prepare the supplement in a form that is easy for the carrier to evaluate. They can also keep the process moving through repeated rounds of correspondence. A public adjuster cannot guarantee that every item will be accepted, perform trade inspections, or change what the policy covers, and they are paid under a written contract you should read carefully. Licensing and fees vary by state, so confirm the details with your state’s department of insurance and verify the license before you sign. If your contractor and the carrier are far apart, a neutral second review of the scope may help.

Frequently asked questions

Why would an insurance estimate leave out electrical damage after a fire?

Estimates are often written from a visual walk-through, and wiring inside walls, junction boxes, and panels cannot be judged by sight alone. Heat, smoke, and firefighting water can affect systems that look fine. An inspection by a licensed electrician can identify what needs testing, repair, or replacement, and give you written findings to submit.

Can smoke damage an HVAC system that was not near the fire?

Yes, it can. The system moves air through the whole house, so smoke and soot can enter the return, travel through ducts, and settle in the equipment and in rooms far from the fire. A qualified HVAC professional can inspect the system and state whether cleaning or replacement of components is recommended.

What if the carrier says my contractor is overscoping?

Ask the carrier to identify the specific line items it disputes and why, in writing. Then respond with evidence for each one: the inspector’s report, photographs, manufacturer guidance, and any permit or code requirement. A clear item-by-item response is more effective than a general disagreement, and it keeps the discussion focused.

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Reviewed by the Adjusterio editorial team. Last reviewed October 2026.

Sources: National Association of Insurance Commissioners (NAIC); Your policy and state department of insurance.

Educational information only, not legal, financial, or insurance advice, and not a coverage determination. Confirm current rules and any credential with your state’s department of insurance. See what verification means.