The 5000 Dollar Rule Reveals When Your Furnace Operating Costs Demand Professional Assessment

https://precisionhvacrepaircorner.huicopper.com/voiding-your-furnace-warranty-costs-thousands-when-the-five-thousand-dollar-rule-applies

The $5,000 rule is an efficiency-based decision framework: if your furnace's annual operating cost (calculated by multiplying its AFUE rating against your heating load and local energy prices) plus any repair bill exceeds $5,000, replacement becomes