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Common Mistakes to Avoid When Replacing Your AC System

As a homeowner, replacing an air conditioning system is a significant investment that impacts comfort, energy efficiency, and long-term costs. Air conditioners are critical for staying safe and comfortable at home during the warmer months.
There are a handful of common mistakes homeowners make when replacing an AC. Avoiding these mistakes helps you maximize the value of your new system. We’re going to cover these common mistakes so you can replace your AC with confidence.
What Are the Problems to Avoid When You Replace an AC?
There are a wide variety of mistakes homeowners often make when replacing their old AC systems. Let’s dive into the top problems to avoid as a homeowner.
Choosing the Wrong Size AC Unit
AC system sizing is extremely important when replacing your unit. An improperly sized AC system can result in major performance issues. If your AC unit is oversized, it may short cycle, or turn on and off frequently, and fail to dehumidify the air.
An undersized unit may struggle to keep up with your home’s cooling demand and run non-stop, leading to increased strain and high energy bills.
A professional HVAC technician can help you determine the right size of AC for your home’s cooling needs. AC sizing depends on your home’s square footage, layout, insulation quality, and local climate.
Just Going for the Cheapest One
Many homeowners think, “I’ll just buy the cheapest option and make it work” when they replace an AC unit. This mindset is not the smartest move when replacing an AC.
You should evaluate the options available to you to determine which system will offer the most benefits and falls within your budget. By just buying the cheapest option, you may end up with a system with a shorter lifespan or known issues.
Ignoring Energy Efficiency Ratings
SEER2 (Seasonal Energy Efficiency Ratio) is the standard efficiency metric for central air conditioning. The minimum standard baseline is 13.4 to 14.3 SEER2, while higher efficiency models offer 16 to 18 SEER2 ratings. An AC with a higher SEER2 rating will provide the same cooling for less money.
Not Updating the Ductwork
If your ductwork is outdated, leaky, or improperly sized, even a brand-new AC system won’t perform as expected. Poorly sealed ductwork with leaks causes significantly energy loss and forces your system to work harder to reach desired temperatures. Improperly sized ductwork can also lead to uneven cooling, strange noises, or strain.
Not Considering Thermostat Compatibility
Some thermostats, especially smart thermostats, are only compatible with certain AC models. It’s important to consider thermostat compatibility when replacing your AC to avoid purchasing an incompatible system. A professional HVAC technician can help you find a compatible model that fits your needs.
Hiring the Wrong Air Conditioner Contractor
It’s crucial to work with the right air conditioner contractor for professional installation. You should work with a licensed and insured HVAC technician to ensure safe and accurate AC installation. Work with a reputable heating and cooling company, like G&G Heating & Air Conditioning for reliable AC replacement.
Waiting Until the System Completely Fails
Often, homeowners wait to replace their AC until their current system completely fails. This method leads to rash decision-making to get a replacement AC installed as quickly as possible. It may also require emergency AC replacement services, which can be more expensive than if you had scheduled in advance. Overall, it's much better to replace your aging AC before it breaks down.
Not Doing Maintenance Post Installation
Even brand-new air conditioners require routine maintenance. Ignoring regular maintenance post installation can cause your system to age and fail prematurely. It’s recommended to schedule an annual AC tune-up to keep your system operating optimally.
Why Professional Installation is a Must
You should never try to install a replacement AC yourself, but instead, call a professional. Here’s why you should trust a licensed professional to get the job done right.
- Proper equipment selection: A licensed pro can help you choose the right size system with a good energy efficiency rating.
- Correct installation procedures: Licensed and insured techs have the experience of installing air conditioner systems properly and safely.
- Manufacturer specifications: A professional will follow manufacturer specifications and guidelines for optimal installation.
- Safety and code compliance: An HVAC professional understands local and national code compliance and safely completes the installation.
- Long-term system performance: A properly installed AC system is prepared for dependable long-term system performance.
- Warranty protection: Most manufacturer warranties require documented professional AC installation to not void the warranty.
Contact Us for AC Replacement Services
AT G&G Heating, we’re the experts in AC replacement. We offer AC services, including AC installation, routine maintenance, and repair services in Olympia and Tumwater, WA. Call us today at (360) 499-6604 to replace an AC unit.
Schedule Online(360) 499-6604



