Repair or Replace My HVAC? Free 5-Question Quiz
Five questions, two minutes, and a clear answer on whether to repair or replace hvac equipment in your Pittsburgh home. The quiz applies the industry-standard 5,000-Mile Rule to your system’s age, the repair quote in your hand, your efficiency tier, and your repair history, then adjusts for Pittsburgh’s heavy heating load. Call (866) 962-7160 to talk it through.
Take the Quiz: Repair or Replace?
Repair or Replace? The 5-Question Quiz
Two minutes. Uses the industry-standard 5,000-Mile Rule plus Pittsburgh-specific factors.
How the Repair-or-Replace Math Actually Works.
The standard formula is the 5,000-Mile Rule: multiply your equipment’s age in years by the repair cost in dollars. Over $5,000, replacement is typically the smarter money. A 14-year-old furnace needing a $400 repair scores $5,600: replace. A 6-year-old furnace needing $600 scores $3,600: repair.
The rule is a guide, not a law, which is why the quiz layers on three adjustments. Efficiency tier: replacing pre-2023 equipment (80% AFUE or 13 SEER) unlocks $200 to $500 per year in Pittsburgh utility savings that accelerate the payback. Repair history: two or more repairs in three years marks the nickel-and-dime phase where replacement usually wins. Sale plans: new HVAC returns 60% to 80% of its cost in home value and removes a common buyer-inspection objection.
Pittsburgh’s climate compresses lifespans slightly against national averages: roughly 6,000 heating degree days a year work equipment hard. Age benchmarks that hold up here: under 7 years, repair almost always; 8 to 12, run the math; 13 to 17, replacement often wins on larger repairs; 18 and older, replacement is usually the correct call. New high-efficiency equipment also qualifies for federal tax credits through 2032, listed at ENERGY STAR.
Keep Running Your Numbers.
Each tool answers one question Pittsburgh homeowners ask before calling a contractor.
HVAC Cost Calculator | Furnace Age Checker | Energy Savings Calculator
Backed by the Brands Pittsburgh Trusts.
Machi Mechanical is an authorized dealer for the industry’s leading equipment manufacturers — meaning your warranty stays fully intact, and your installation meets factory standards.
Repair or Replace Quiz FAQs.
Questions we hear before every first service call. Can’t find yours? Call (866) 962-7160 — a live dispatcher answers 24/7.
Is it worth repairing a 15-year-old furnace?
Rarely. At 15 years the furnace has consumed most of its useful life and runs at reduced efficiency, so unless the repair is very minor (under $150), the 5,000-Mile Rule almost always favors replacement, and new high-efficiency equipment qualifies for federal tax credits through 2032.
What HVAC parts are not worth replacing?
Compressors in AC and heat pump systems, heat exchangers in furnaces, and evaporator coils. On systems over 10 years old these repairs cost enough that the math rarely favors them over replacement.
What is the 5,000-Mile Rule for HVAC?
Multiply the equipment’s age in years by the repair cost in dollars; results over $5,000 typically favor replacement. It is the industry-standard starting point, which this quiz then adjusts for efficiency tier, repair history, and home-sale plans.
Does Machi Mechanical offer free estimates for replacements?
Yes. Call (866) 962-7160 or request a free estimate online. We assess the existing equipment, review any repair quotes you already have, and give an honest recommendation either way, including a written replacement quote with a Manual J load calculation.
What should I do if the quiz says repair?
Schedule a same-day diagnostic and fix it, then protect the remaining lifespan with seasonal tune-ups. A repaired system on a maintenance plan routinely reaches the upper end of its lifespan range.
GET A FREE ESTIMATE
The calculator gives you a range; a free in-home estimate gives you the number. Call (866) 962-7160 or request a free estimate online and a Machi Mechanical comfort advisor will verify everything against your actual home, with a written quote and no obligation.