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Repair or replace

Decision guides

Repair or replace?

Structured decision tables instead of generic advice — matched to the age, failure mode and cost of the system you actually have.

Verified August 2026

Repair or Replace Your Roof?Replace once repairs pass ~30% of replacement cost, or the roof is past 75% of its rated life.Repair or Replace Your Air Conditioner?Multiply repair cost by equipment age in years. Above the price of a new system, replace.Repair or Replace Your Water Heater?A leaking tank body is never repairable. Past 10 years, replace rather than repair.Repair or Replace Your Windows?Fogged glass in more than a third of the house usually makes whole-unit replacement cheaper per opening.Repair or Replace Your Garage Door?Springs and openers are repairs. Panel and track damage on an older door is a replacement.
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Costs, permits, rules and calculators for home projects — organized by project and location.

Cost figures are modeled estimates, not quotes. Permit rules change; always confirm with your local building department before starting work.

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Roof ReplacementAC ReplacementFence InstallationWater Heater ReplacementPool InstallationWindow ReplacementElectrical Panel ReplacementGenerator Installation

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