Replacing an AC unit isn’t just about swapping out an old system for a new one—it’s a major investment in your home’s comfort and efficiency. However, too many homeowners rush the process or overlook key details, leading to costly mistakes. If you’re planning an AC replacement, here are the top five mistakes to avoid so you can save money, stay cool, and make the best choice for your home.
1. Choosing the Wrong Size AC Unit
Bigger isn’t always better, and smaller isn’t always cheaper. One of the most common mistakes homeowners make is installing an AC unit that’s either too big or too small for their home.
- An oversized unit cools your home too quickly, which leads to short cycling—turning on and off frequently. This wears out the system faster, increases energy bills, and creates uneven cooling.
- An undersized unit will constantly struggle to cool your home, leading to overwork, inefficiency, and early system failure.
How to avoid it: Always have a professional perform a load calculation before selecting your new AC. This calculation considers home size, insulation, windows, and other factors to ensure you get the right-sized system.
2. Going for the Cheapest Option
We get it—nobody wants to overpay for a new AC. Choosing the cheapest unit upfront can end up costing you more in the long run. Budget systems often have lower efficiency ratings, shorter lifespans, and higher maintenance costs.
- A low SEER (Seasonal Energy Efficiency Ratio) unit will drive up energy bills.
- Cheaper systems often use lower-quality components, leading to frequent breakdowns.
- Many budget units come with shorter warranties, leaving you to foot the repair bills sooner than expected.
How to avoid it: Instead of focusing only on price, consider long-term costs. Look for energy-efficient models (at least 16 SEER or higher) and factor in warranties, expected lifespan, and potential energy savings.
3. Ignoring Ductwork Issues
Your new AC is only as good as your ductwork. Leaky, damaged, or improperly sized ducts can reduce efficiency by up to 30%, meaning you won’t get the performance you’re paying for.
Signs your ductwork needs attention:
- Uneven cooling between rooms
- High energy bills despite a new system
- Excess dust or poor indoor air quality
How to avoid it: Ask your AC technician to inspect and seal your ductwork when installing the new unit. If your ducts are old or too small for the new system, replacing them can drastically improve performance and efficiency.
4. Not Considering Smart Thermostat Compatibility
Many homeowners replace their AC but keep their outdated thermostat—missing out on major energy savings and comfort improvements.
- Smart thermostats learn your habits and adjust cooling automatically, saving up to 10-15% on energy bills.
- They allow remote control via smartphone apps, so you can adjust settings from anywhere.
- Some models offer maintenance alerts, reminding you when it’s time for a filter change or service check.
How to avoid it: Upgrade to a smart thermostat when you replace your AC. Many utility companies even offer rebates to offset the cost!
5. Skipping Professional Installation & Maintenance
Even the best AC unit won’t perform well if it’s improperly installed. A bad installation can lead to refrigerant leaks, airflow problems, and efficiency loss.
DIY installations or hiring a general handyman can void warranties!
Additionally, many homeowners install a new system and forget about maintenance, which can lead to breakdowns and a shortened lifespan.
How to avoid it:
- Always hire a professional contractor with the proper licenses and insurance, highly skilled technicians, good reviews, and a track record of professional installations.
- Schedule annual tune-ups to keep your AC running efficiently and catch small issues before they become expensive repairs.
- Consider joining a maintenance plan like Falcon’s Elite Care Advanced Plan for regular tune-ups and inspections, priority service, and repair discounts.
Final Thoughts
Replacing your AC is a big investment, but avoiding these common mistakes can save you thousands in repairs and energy costs down the line. The key is to plan ahead, prioritize efficiency, and work with trusted professionals to ensure your new system keeps you cool for years to come.
Thinking about replacing your AC? Call Falcon Heating & Air Conditioning at (571) 832-0423 for expert advice and a free consultation.