The Answer, and the Clause That Undoes It
A home service contract covers the electrical system, and covers it broadly. One national provider's direct-to-consumer contract lists it as "All components and parts." Another enumerates the "main breaker or fuse panel/box receptacles and general line voltage wiring."
That grant is close to irrelevant for the houses where electrical risk actually lives. Every contract sampled also refuses work required to satisfy a building code, and in an older house the electrician's recommendation is almost never "replace this one part." It is rewire, re-terminate, or replace the panel - permitted work that triggers current code. Grant and exclusion point in opposite directions, and the exclusion wins.
What the Contract Grants, and What the Code Clause Takes Back
Read the exclusions beside the grant and the covered scope narrows fast. One widely circulated contract excludes "Fixtures," "Inadequate wiring capacity," "Circuit overload," and "Damages due to power failure or surge, or loads greater than the system's design." Another excludes "exterior wiring and components," anything "servicing a detached structure," "low voltage systems including wiring and relays," and "service entrance cables." What survives is ordinary line-voltage distribution inside the house envelope, failing on its own terms.
Then comes the clause that decides most of these claims. One contract: "We will not contract for services to meet current building or zoning code requirements or to correct for code violations ..., nor will We contract for services when permits cannot be obtained." Another: "This Agreement does not cover any costs associated with any upgrades or modifications to comply with federal, state, and/or local law, code, regulation, or ordinance. All such costs are your responsibility." A third assigns the contract holder "the costs to meet the proper code criteria," including permits.
The second half of the first clause does independent work. Nor will We contract for services when permits cannot be obtained. On a legacy-wired house the permit application summons an inspector who will require the circuit brought to current standards. Where no permit issues, the contract declines to perform at all, and the claim ends before the code exclusion is reached.
One premium tier buys back a slice - up to $1,000 per term toward code-violation correction. A partial offset on one repair, not a rewire.
Aluminum Branch Wiring: What the CPSC Concluded, Precisely
First, the distinction consumers and agents get wrong more than any other. Aluminum branch circuit wiring means solid, single-strand aluminum conductor on 15-amp and 20-amp circuits. It is not stranded aluminum service-entrance cable, and not aluminum feeders to a range, dryer or subpanel - those remain in ordinary use and are generally not reported as a defect.
Second, the regulatory record, misreported in both directions. There has never been a recall of aluminum branch circuit wiring. The 1974 Consumer Product Safety Commission news release is advisory only - have a qualified person identify the wiring, watch for "warm switch or receptacle face plates," the "smell of burning plastic" and unexplained "flickering of lights," and use only devices "labeled CO/ALR." It contains no substantial-product-hazard determination.
Third - the chapter most consumer articles omit - no recall does not mean no federal action. In 1977 the Commission sued 26 manufacturers under Section 12(a) of the Consumer Product Safety Act, 15 U.S.C. section 2061(a), asking a federal court to declare "old technology" aluminum wiring systems imminently hazardous consumer products and to order public notification. In Consumer Product Safety Comm'n v. Anaconda Co., 445 F. Supp. 498 (D.D.C. 1977), the court held those systems were "consumer products" within the agency's jurisdiction, then certified the questions for interlocutory appeal. How the case ended is not established here.
Testifying in 1978, the Commission said "as many as 1 1/2 to 2 million homes" had dangerous conditions requiring repair, that the systems were "manufactured between 1965 and 1973," and that it sought the declaration "rather than pursue a traditional recall." So the accurate summary is neither "it was recalled" nor "the government found it safe": the agency found a hazard, pursued the strongest remedy in its statute, and never obtained a nationwide repair order. Its own publication says "between 1965 and the mid 1970s," so 1973 is no cutoff.
The 55x Figure, and the Repairs the Agency Endorses
CPSC Publication 516, Repairing Aluminum Wiring, states that homes "built before 1972, and wired with aluminum, are 55 times more likely to have one or more wire connections at outlets reach 'Fire Hazard Conditions'" than copper-wired homes. Note what is measured: connections reaching a defined hazard condition. Not fires, not losses, not deaths. The usual misquote - "55 times more likely to burn down" - is not what the agency said.
The metallurgy explains why the statistic attaches to connections rather than to conductors: aluminum oxidises into a less conductive oxide, moves more with temperature, corrodes galvanically against dissimilar metals, and exhibits cold flow - it "will continue to deform or 'flow' even after the tightening has ceased." The termination in the box fails, not the wire in the wall, which is why remediation is connection by connection.
Endorsed repairs, in order: replacing the aluminum branch conductors with copper, which "eliminates the primary cause"; the COPALUM parallel-splice crimp, "a safe and permanent repair of the existing aluminum wiring"; and the AlumiConn set-screw lug, "the next best alternative for a permanent repair." COPALUM needs a special tool and an authorised installer, so the constraint is availability, which is regionally variable. Rejected repairs matter as much: ordinary twist-on connectors, where "substantial numbers of these connectors overheated severely" in testing; non-COPALUM crimps; and CO/ALR devices alone, "at best, an incomplete repair," because they leave splices inside the box untouched. A seller offering to "replace the outlets" is offering what the agency called incomplete.
Knob-and-Tube and Ungrounded Two-Wire Cable
Knob-and-tube is open, single-conductor wiring on porcelain knobs, passed through framing in porcelain tubes, common in North America from roughly the 1880s through the 1940s. It is ungrounded, and designed to shed heat into free air. That assumption is why the method is prohibited from being covered with loose-fill, blown-in or expanding foam insulation. California, Washington, Nebraska and Oregon have conditionally modified the prohibition, permitting insulation where an electrician first certifies the wiring's condition.
That is how most owners find out they have it: an energy retrofit is scheduled, the insulation contractor opens the attic, sees knobs and tubes, and walks away. The retrofit becomes an electrical project, and an electrical project is not a claim. Ungrounded mid-century two-wire cable is the quieter version - not a hazard in itself, but it blocks a compliant three-prong receptacle.
The Inspector's Duty, and the Word "Predominant"
ASHI's Standard of Practice section 7 requires inspection of the service drop and entrance conductors, service equipment and main disconnects, service grounding, "interior components of service panels and subpanels," conductors, overcurrent devices, a representative number of fixtures, switches and receptacles, and ground fault and arc fault interrupters. It requires the inspector to describe the service amperage, the main disconnect and subpanel locations, and "the predominant branch circuit wiring method."
Predominant. Not every circuit. In a house partially rewired in 1988 the predominant method may be copper while a dozen original aluminum circuits remain behind finished walls, and the report is accurate without telling a buyer what they need to know. InterNACHI requires members to "report upon single-strand, solid conductor aluminum branch-circuit wiring, if observed" - the observation qualifier doing considerable work.
Both standards then withdraw a great deal. ASHI does not require measuring "amperage, voltage, and impedance," nor determining compliance "with past and present requirements and guidelines." InterNACHI's inspector need not remove cabinet covers, verify the service ground, or run voltage-drop calculations, and the inspection "will not identify concealed or latent defects." Establishing the extent of legacy wiring is an electrician's scope, commissioned inside the inspection period.
Why These Claims Fail: The Exclusion Stack
A legacy-wiring claim rarely dies to one exclusion. It dies to four at once: the condition is pre-existing and detectable; the remedy is code work; the permit either triggers an upgrade or cannot be obtained; and "inadequate wiring capacity" and "circuit overload" are named exclusions in their own right. What an electrician proposes - rewire, or crimp every connection - is a system upgrade, and no contract sampled funds one.
The pre-existing analysis is where carriers differ, and where a buyer's own report gets turned against them. One contract refuses to pay "if they are inoperable as a result of pre-existing conditions, deficiencies, or defects." Two others are more generous, covering an unknown pre-existing failure that "could not have been detected by visual inspection or simple mechanical test." That test is the hinge: aluminum branch wiring is visible at the panel and at device boxes, and knob-and-tube is visible in an attic. Visible means detectable, detectable means pre-existing, and pre-existing means excluded even under the generous language.
Two limits finish the picture. One contract caps covered systems at $5,000 per system and $15,000 in the aggregate, with "no more than $2,000 ... for any and all covered electrical repairs required due to rust and corrosion." And a deductible "must be paid for each trade on each service call" - electrical being its own trade, which makes a single switch pointless to claim.
Insurability, and the Deadline That Actually Decides It
The controlling deadline is not the warranty's. It is the inspection or option period, running alongside the point at which an insurance carrier will commit to bind. Insurers, not the federal government, are the practical enforcement mechanism on legacy wiring. Reporting from March 2025 quoted a California broker on knob-and-tube: "If we put it on the application, we are going to get declined." The same report noted that the San Francisco Fire Department has "not seen trends in knob and tube electrical wiring residential structure fires" - a genuine conflict between underwriting practice and local fire loss data, and one a buyer cannot win by being right.
Three things belong inside the window, in order. Establish what the wiring is, using an electrician rather than the report's "predominant method" line. Get an insurance quote with the wiring disclosed, because an unbindable policy kills a loan and the discovery has no remedy once the contingency lapses. Then price the remedy, knowing that a service contract bought afterward will not contribute to it.
A report finding obligates nobody by itself. It is a disclosure document, not a repair order. Its force is leverage, conversion of the condition into the buyer's knowledge, and a permanent place in the seller's disclosure file. Three primary documents repay reading: Repairing Aluminum Wiring, the 1978 congressional testimony release, and the ASHI Standard of Practice.
Frequently Asked Questions
Will a home warranty pay to rewire a house with aluminum wiring?
No. Every contract sampled excludes work required to meet code, and a rewire is permitted, inspected work that triggers current code. Two add the further refusal to "contract for services when permits cannot be obtained," which ends the claim before the code exclusion is reached. "Inadequate wiring capacity" and "circuit overload" are separately named exclusions, and the pre-existing-condition provision applies because aluminum branch wiring is visible at the panel and at device boxes.
Was aluminum wiring ever recalled?
No. There has never been a recall of aluminum branch circuit wiring, and the 1974 CPSC release was advisory only, with no substantial-product-hazard determination. That statement is true but misleading on its own.
In 1977 the Commission sued 26 manufacturers under Section 12(a) of the Consumer Product Safety Act, asking a federal court to declare "old technology" aluminum wiring systems imminently hazardous consumer products and to order public notification. The court confirmed jurisdiction and certified questions for interlocutory appeal. The agency told Congress in 1978 that it chose that route "rather than pursue a traditional recall," and no nationwide repair or notification order followed.
Is aluminum wiring 55 times more likely to cause a fire?
That is a misquotation. The agency's publication states that homes "built before 1972, and wired with aluminum, are 55 times more likely to have one or more wire connections at outlets reach 'Fire Hazard Conditions'" than copper-wired homes. The measured outcome is a connection reaching a defined hazard condition - not a fire, not a loss, not a fatality. The distinction is practical as well as pedantic, because a seller's electrician will recognise the misstatement immediately.
Is replacing the outlets with CO/ALR devices a proper fix?
Not by itself. The federal publication describes CO/ALR devices alone as "at best, an incomplete repair," because they address only the terminations at the device and leave splices inside the box untouched. The endorsed permanent repairs are replacing the aluminum branch conductors with copper, the COPALUM parallel-splice crimp, or the AlumiConn set-screw lug as the next best alternative. Ordinary twist-on wire connectors were rejected after testing found that "substantial numbers of these connectors overheated severely."
Can I insulate an attic that has knob-and-tube wiring?
Generally not without addressing the wiring first. Knob-and-tube is prohibited from being covered with loose-fill, blown-in or expanding foam insulation, because the method depends on shedding heat into free air. California, Washington, Nebraska and Oregon have conditionally modified this and permit insulation where an electrician first certifies the wiring's condition. This is frequently how the wiring is discovered at all - the insulation contractor opens the attic, sees the porcelain, and withdraws from the job.
Does the home inspector have to find all of the aluminum wiring?
No. The ASHI standard requires describing "the predominant branch circuit wiring method" - predominant, not exhaustive - so a partially rewired house can be accurately reported as copper while original aluminum circuits remain behind finished walls. InterNACHI requires reporting on "single-strand, solid conductor aluminum branch-circuit wiring, if observed." Neither standard requires dismantling, and neither inspection "will identify concealed or latent defects."