25 Years Serving St. Louis•Home of the $55 Service Charge•Available 24/7 for Emergencies•Family-Owned & Operated by Kim Manson•All Major Brands Serviced•25 Years Serving St. Louis•Home of the $55 Service Charge•Available 24/7 for Emergencies•Family-Owned & Operated by Kim Manson•All Major Brands Serviced•
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Savings• June 10, 2026• 5 min read

Repair or Replace? A St. Louis Homeowner's Guide

A new system is a big decision. Use this simple framework to know when a repair makes sense — and when it's time to upgrade.

By Kim Manson · Manson's Heating & Cooling

Repair or Replace? A St. Louis Homeowner's Guide

One of the most common questions we hear is: 'Should I repair this or replace it?' It's a fair question, and the answer depends on three things: the age of your system, the cost of the repair, and your energy bills.

Start with age. A well-maintained air conditioner typically lasts 12–15 years; a furnace, 15–20. If your system is past that window and needs a major repair, replacement is usually the smarter long-term call — newer systems are dramatically more efficient.

Next, apply the $5,000 rule. Multiply the age of the unit (in years) by the repair cost (in dollars). If that number exceeds $5,000, replacement is generally the better investment. If it's well under, a repair will keep you comfortable for years more.

Finally, look at your energy bills. If they've crept up steadily even though your usage hasn't, your system is losing efficiency. A new high-efficiency system can cut cooling and heating costs significantly — and often pays for itself over its lifetime.

The right answer is different for every home, and you shouldn't have to figure it out alone. Call (314) 210-6487 for a flat $55 diagnostic and an honest recommendation. We'll tell you straight — even if that means a repair instead of a sale. That's how a family business earns 25 years of trust.

Need help right now?

Book a complete $55 HVAC checkup online, or call Kim and the family directly.