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When to Repair vs. Replace Your Furnace

Is your furnace on its last legs? Here's how to decide whether a repair or full replacement makes more financial sense.

Buying Guide

Pro-Tech Team

November 5, 2025
7 min read
(616) 303-7436

Is your furnace on its last legs? Here's how to decide whether a repair or full replacement makes more financial sense.

When your furnace breaks down, the first question is always: should I repair it or replace it? Here's a practical guide to help you decide.

The 50% Rule

If the repair costs more than 50% of the price of a new furnace, replacement usually makes more sense financially.

Age Matters

Most furnaces last 15-20 years. If yours is approaching that range and needing frequent repairs, it's time to start planning for a replacement.

Efficiency Gains

Modern furnaces are significantly more efficient. Upgrading from an 80% efficiency furnace to a 96% model can save hundreds per year on heating costs.

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