When Should You Replace Your HVAC System? McKinney Guide

When to Replace Your HVAC System in McKinney

Knowing when to replace your HVAC system can save you from unexpected breakdowns during a sweltering McKinney summer or a rare North Texas freeze. Most systems last 15 to 20 years, but several warning signs suggest it is time to start planning for a new installation.

Top Signs Your System Needs Replacing

• Age over 15 years: Efficiency drops significantly, and parts become harder to source.
• Rising energy bills: If your Oncor bill keeps climbing despite normal usage, your unit is working too hard.
• Frequent repairs: Spending more than half the cost of a new system on repairs in a single year is a clear signal.
• R-22 refrigerant: This refrigerant was phased out nationally. Refills are extremely expensive and increasingly scarce.
• Low SEER rating: Older units may be rated SEER 8-10. Modern systems start at SEER 15, cutting cooling costs dramatically in Collin County summers.

What to Do Next

Get a professional load calculation before choosing a replacement. An oversized or undersized unit wastes energy and shortens equipment life. Connect with vetted McKinney HVAC contractors who can assess your home and recommend the right system for your square footage and budget.