Centennial homes from the 1975 to 1995 build era often have original or near-original air conditioning equipment that has been running for 20 to 30 years. These systems are consuming significantly more energy than modern high-efficiency units, losing refrigerant to leaks that have developed over time, and increasingly failing mid-season when demand is highest. When repair costs are climbing and reliability is gone, replacement is the right call, and getting it done correctly means sizing the new system for the home as it exists today, not as it was when the original equipment was installed.

For systems that may still have repair life left, our air conditioning repair team provides an honest assessment of whether repair or replacement makes more financial sense. For keeping a new system running well after installation, our AC maintenance service covers annual tune-ups. See all Centennial HVAC services we offer.

• End-of-life system replacement for AC units that are past 15 years old, have repeated repair needs, or can no longer maintain comfortable temperatures in the home.
• Failed compressor replacement where the compressor has failed completely and the cost of compressor replacement is close enough to full system replacement that the newer system is the better investment.
• Efficiency upgrade replacement for homeowners who want to reduce energy costs and qualify for current efficiency rebates by replacing an older low-efficiency system.
• System resizing when the original equipment was incorrectly sized for the home or when additions, finished basements, or reinsulation have changed the home’s cooling load.
• Full HVAC system replacement when the furnace and AC are both aging and replacing both at the same time is the more cost-effective approach.

Here are the air conditioning replacement situations our Centennial technicians handle most often.

How Do I Know If It Is Time to Replace My AC in Centennial?

The clearest signals are a system that is 15 or more years old with increasing repair frequency, a repair estimate that represents more than half the cost of a new system, a system that is no longer able to keep up with cooling demand in your Centennial home during hot weather, or a system running on refrigerants like R-22 that are no longer manufactured and increasingly expensive to service. If your AC is showing two or more of these signs simultaneously, replacement is the financially sound decision.

WireNut will give you an honest repair-versus-replace assessment when you call for service. If the system has repair life left and the repair cost is reasonable, we say so. If the numbers point clearly to replacement, we say that too and give you a replacement estimate you can compare against the repair cost on the spot.

What Size AC System Does My Centennial Home Need?

Air conditioner sizing is calculated based on the home’s square footage, ceiling heights, insulation quality, window area and orientation, and local climate data. In Centennial, the combination of dry climate, UV exposure at elevation, and older homes with variable insulation conditions means that sizing should be done with an actual load calculation, not a rule of thumb like one ton per 500 square feet. An oversized system will short-cycle, fail to dehumidify properly, and wear out faster than a correctly sized unit. An undersized system will run continuously without reaching the set temperature on hot days.

WireNut performs a proper load calculation before recommending replacement equipment for Centennial homes. You get a system sized for your home as it actually exists, not a guess based on square footage alone.