When to Replace Your HVAC System: A Real-Life Example from Keystone

Jul 7

At Keystone, we recently completed a full system replacement for a homeowner who made the proactive decision to replace their HVAC unit simply because it had reached 20 years of service. While the system was still functional, the homeowner recognized the value of upgrading before a mid-summer breakdown. This is a smart move—especially in our Southern Coastal Virginia climate, where reliable cooling is essential.

How Old is Too Old?

If your HVAC system is more than 10–15 years old, there are several reasons why replacing it might be the better option:

Energy Efficiency: Modern systems meet much higher SEER ratings and energy standards. An older unit can cost significantly more to operate over time.
Refrigerant Type: Many older systems still use R-22 refrigerant, which is no longer produced. If your system leaks, it could be expensive or impossible to recharge.
Repair Frequency: Frequent repairs on aging systems can add up quickly—and often signal deeper system fatigue.
Warranty Expiration: Once your system is out of warranty, any repair costs come straight out of your pocket.

Simple Math to Guide Your Decision

Use the 5,000 Rule: Multiply the cost of a needed repair by the age of your unit. If the total exceeds $5,000, it’s often more economical to replace the unit.

For example, a $500 repair on a 12-year-old unit equals $6,000—suggesting replacement may be the smarter investment.

Signs It’s Time to Replace

According to ENERGY STAR, consider a replacement if you notice:

Uneven heating or cooling throughout your home
Rising energy bills despite consistent use
Excess humidity or dust
Loud or unusual noises

The Keystone Difference

When it comes to HVAC replacement, Keystone provides clear options, honest advice, and top-tier workmanship. Our recent project included a modern, energy-efficient system designed to deliver year-round comfort and lower monthly energy bills. We removed and disposed of the old unit, installed a new air handler and condenser, and ensured the entire system was tuned, tested, and optimized.

Whether you're facing an emergency or planning ahead, we’re here to help you make the right decision for your home.

Call us today at 757-344-4010 to schedule a system evaluation.