19 Things You Must Consider Before Replacing Your AC Unit

Is an AC Replacement Truly Necessary for You?

When it’s hot outside, a well-operating air conditioning (AC) unit plays a crucial role in providing relief from outdoor temperatures. Your AC not only keeps you comfortable—it also helps keep you safe and healthy during periods of extreme heat.

Controlling the temperature inside your home demands lots of energy. On average, air conditioning accounts for as much as 19% of your energy costs, according to the U.S. Information Administration (EIA), so it’s important to keep your unit running optimally for as long as possible.

Knowing when it’s time for a new unit often comes down to analyzing a few key factors, such as the age of your system, whether your energy bills have steadily increased, how frequently repairs are needed and how well it’s performing overall. In this guide, we’ll walk you through 19 essential factors to help you decide if replacing your AC unit is the right choice for your home.

From understanding efficiency ratings to considering the environmental impact, we’ll ensure you’re well-equipped to make a decision that balances comfort, energy savings and long-term value.

Common signs that your AC unit is aging and may need to be replaced include:

• Increased energy bills.
• Frequent breakdowns and costly repairs.
• Decreased cooling capacity—your home doesn’t feel as cool as it once did, even when the AC is running.

In the last decade, advancements in HVAC technology have made modern AC units more energy-efficient and eco-friendly. Here are some of the benefits of newer models:

• Increased energy efficiency: Modern systems consume less energy while providing powerful cooling.
• Eco-friendly features: Many new models are designed to reduce your environmental impact.
• Cost savings: Upgrading to an energy-efficient unit can lower your utility bills.

If you’re noticing any of these signs, it may be time to consider investing in a newer model for improved comfort and long-term savings.

2. Frequency of Repairs: Calculating the costs of constant fixes of AC units.

If you find yourself frequently calling a technician to fix your air conditioning unit, it’s worth taking a closer look at how it’s financially impacting you. While each repair might seem manageable, the costs can add up quickly.

In fact, you could end up spending more on repeated fixes than you would on a new, energy-efficient AC unit. For instance, if each repair costs between $300 and $500, it won’t take long for those bills to surpass the price of a replacement system.

Frequent breakdowns typically stem from a few key issues:

• Aging units: Older systems experience more wear and tear, leading to frequent failures.
• Skipped maintenance: Neglecting regular upkeep can cause parts to break down.
• Faulty installation: A poorly installed unit is more likely to have recurring problems.

Beyond the financial burden, constant repairs disrupt your comfort and safety. You might have to go days without cooling during extreme heat. Plus, the hassle of scheduling repairs can quickly become overwhelming.

Instead of sinking more money into ongoing repairs, consider investing in a new AC unit. A replacement could save you from future breakdowns while offering reliable comfort and long-term energy savings.

Here’s how upgrading to a higher SEER unit can benefit you:

• Lower energy bills: If you currently spend $200 per month cooling your home, a higher-efficiency unit could reduce that by $60 per month, saving you $720 per year.
• Long-term savings: While a high-SEER unit may have a higher upfront cost, the energy and repair savings over time can make up for the initial investment.
• Increased home value: Installing energy-efficient equipment can improve your home’s resale value.
• Reduced energy consumption: More efficient units use less electricity, helping to lower overall energy demand.
• Lower greenhouse gas emissions: Using less power means producing fewer emissions, contributing to improved air quality and a smaller carbon footprint.
• Tax credits or rebates: Many local and federal programs offer incentives for purchasing energy-efficient HVAC systems, which can help offset the initial cost. If you’re an EPB customer, you can earn a rebate for up to $1,500 per system for qualifying air conditioners. See what qualifies.
• Utility discounts: Some energy providers may offer discounts for upgrading to a more efficient unit.

By choosing an AC unit with a higher SEER rating, you can enjoy long-term savings, reduce your environmental impact, and even take advantage of financial incentives—making it a smart investment for both your wallet and the planet.

4. Operational Costs: Long-term savings of newer models of AC units.

When it comes to your AC unit, operational costs go beyond just what you’re paying on your energy bill each month. You also have to think about how much you’re spending on repairs, maintenance and, eventually, replacing the system.

Over time, those costs can really add up, especially if your unit is older and less efficient. That’s why it’s smart to consider the potential long-term savings that come with upgrading to a newer, more efficient model.

Thanks to recent advancements in AC technology, operational costs have dropped quite a bit. Newer units now come with features like:

• Variable speed motors: These motors adjust the system’s power output based on the cooling demand, reducing energy usage and wear and tear on the unit.
• Smart thermostats: These thermostats allow precise temperature control and can automatically adjust settings based on your habits, improving efficiency.
• Advanced filtration systems: These systems help keep the unit clean, improving air quality and reducing strain on the system.

On top of these advancements, regular maintenance plays a big role in keeping your operational costs low. Here are some of the ways it benefits you to stay on top of tasks like cleaning filters, checking refrigerant levels and making sure everything is running smoothly:

• Ensure optimal performance: Regular upkeep prevents your system from overworking, reducing energy consumption.
• Extend the unit’s lifespan: A well-maintained unit lasts longer and is less likely to break down.
• Prevent costly breakdowns: Catching small issues early on can save you from expensive repairs down the line.

By investing in a newer, more efficient AC unit and staying on top of regular maintenance, you can significantly lower your operational costs and enjoy reliable cooling for years to come.

Several factors come into play when determining the correct size for your AC unit, including:

• Room size: Larger rooms require more cooling capacity.
• Number of windows: More windows mean more heat enters the space.
• Sun exposure: Rooms with direct sunlight may need more cooling power.
• Number of occupants: More people generate more heat.
• Heat-producing appliances: Appliances like ovens and electronics can increase the cooling load.

Proper sizing ensures your AC unit can handle your home’s cooling needs efficiently without overworking or underperforming. For more details on sizing your HVAC system, check out our full blog post here.

6. Budgeting: Setting a realistic budget for AC replacement.

When it comes to replacing your AC unit, setting a realistic budget is key to avoiding unexpected financial surprises and ensuring a smooth replacement process. A well-thought-out budget will give you a clear picture of what to expect and help you make informed decisions.

Several cost factors should be considered when budgeting for AC replacement, including:

• Cost of the unit: Prices vary based on size, efficiency, and features.
• Installation charges: This includes labor costs, which can vary by contractor.
• Electrical upgrades: Older homes may need electrical updates to accommodate a new unit.
• Additional features: Programmable thermostats, upgraded air filters, or smart systems can increase costs.

While it’s important to stick to your budget, the cheapest option may not always be the most cost-effective in the long run. Investing in a higher-efficiency unit might mean a higher upfront cost, but it can lead to significant savings on energy bills over time.

7. Refrigerant Types: Transition from R-22 to R-410A.

Refrigerants are essential to air conditioning systems, as they absorb and release heat to cool your home. For decades, R-22 (Freon) was the standard refrigerant used in most systems. However, due to its harmful effects on the ozone layer, R-22 has been phased out. The production of R-22 stopped in 2020, although it can still be recovered and recycled from old systems.

The new standard, R-410A, offers significant environmental and efficiency benefits:

• Environmentally friendly: Unlike R-22, R-410A doesn’t deplete the ozone layer.
• More efficient: R-410A allows AC systems to run more efficiently, which can lead to lower energy costs.

Switching to a system that uses R-410A not only helps protect the environment but can also improve your home’s energy efficiency, reducing overall operational costs.

8. Indoor Air Quality: Allergens and filtration systems.

Good indoor air quality (IAQ) is vital for your health, particularly if you suffer from allergies or respiratory issues. The Centers for Disease Control and Prevention (CDC) says exposure to indoor air pollutants can cause immediate and long-term health effects, depending on the type and concentration of the pollutants.

And, according to the Environmental Protection Agency (EPA), indoor air can sometimes be two to five times more polluted than outdoor air due to concentrated allergens like dust mites, pet dander, mold and pollen.

If you notice any of these common symptoms that don’t seem to have a cause, poor IAQ could be to blame:

• Frequent coughing
• Sneezing
• Shortness of breath
• Chest tightness
• Wheezing
• Itchy or watery eyes
• Dryness or irritation in the eyes, nose and throat
• Runny nose
• Skin rashes
• Persistent tiredness
• Headaches
• Dizziness
• Chronic conditions become worse (including asthma, allergies and cardiovascular issues)

Air filters help by trapping these particles, but they must be replaced regularly to stay effective. The EPB Energy Pros℠ recommend changing your air filters every three months, or monthly if you have pets.

When replacing your AC unit, it’s important to consider models that offer advanced filtration systems. Newer units can come equipped with features designed to improve IAQ, helping you maintain a healthier home environment. By upgrading your AC system, you can ensure better air quality alongside energy efficiency.

Here are some examples of everyday sounds and their SRN:

• 60 SRN: Normal conversation
• 50 SRN: Dishwasher running
• 40 SRN: Fan
• 30 SRN: Quiet library

When replacing your AC unit, you may want to consider a system that makes less noise to keep your home as peaceful and comfortable as possible.

10. Environmental Footprint: Eco-friendly AC options.

Reducing your environmental footprint and playing your role in improving air quality starts with choosing eco-friendly air conditioning options. Traditional AC units consume large amounts of energy, contributing to greenhouse gas emissions. Fortunately, newer models are designed to be more energy-efficient and environmentally friendly.

Eco-friendly AC units offer advantages like:

• Energy efficiency: Units with higher SEER ratings use less energy.
• Greener refrigerants: R32 refrigerant is more environmentally friendly than older options like R-22.
• Smart cooling technologies: Features like programmable thermostats and inverter technology reduce energy consumption.

Though eco-friendly AC units may have a higher upfront cost, they provide long-term economic benefits through lower energy bills and reduced environmental impact. Options like Energy Star-rated units can save you money while helping the environment.

11. Smart Features: Wi-Fi connectivity,

Smart features in some modern AC units have revolutionized home comfort and energy efficiency. With Wi-Fi connectivity, you can remotely control your AC from anywhere using your phone or tablet, adjusting the temperature to save energy while you’re out or to ensure a comfortable return home. Some systems even allow remote diagnostics to prevent issues before they become major problems.

Programmable or smart thermostats can also help you save. By setting your thermostat back by 7º–10ºF for the eight hours a day when you’re at work or school, you can save up to 10% annually on heating and cooling costs. Wi-Fi-enabled smart thermostats can also learn your patterns and use local weather forecasts to optimize your savings even more.

When replacing your AC unit, opting for smart features like these can help you improve comfort, lower your energy bills and take full control of your home’s temperature no matter where you are.

12. Compatibility: Ensuring cohesion with existing systems.

When replacing your AC unit, it’s essential to ensure compatibility with your existing HVAC system. Compatibility covers factors like the physical size of the unit, its power capacity and energy requirements. If your new unit isn’t a good fit, it can lead to inefficiency, increased wear and tear or even system failure.

To avoid these issues, it’s crucial to consult an HVAC professional who can evaluate your home’s ductwork, electrical system and other infrastructure for a seamless fit. When considering a new AC unit, ensuring compatibility with your current system is one of the most important steps to ensure efficient operation and long-term performance.

13. Brands and Reviews: The importance of due diligence.

When replacing your AC unit, researching various brands is crucial. A brand’s reputation can indicate product quality, longevity, and customer service. There are many well-regarded brands in the HVAC industry that are highly rated and are known for their reliability and energy-efficient options.

It’s also important to check product reviews from reliable sources. These reviews provide real-world insights into the unit’s performance, installation process and long-term functionality, helping you make an informed decision before committing to a new AC unit.

They can help you choose the right size unit for your home, find the most energy-efficient options and anticipate possible installation challenges. Most of all, they can help you avoid costly mistakes. This guidance can make a big difference in long-term comfort and savings.

If you’re an EPB customer, you can schedule a free consultation with the EPB Energy ProsSM We’ll help guide you through the entire process, from selecting the right unit to verifying that it’s installed properly. We’ll also help you find energy-efficient solutions to help make sure your investment delivers maximum comfort and long-term savings. Schedule a time to talk to a pro.

16. Installation Complexities: Potential challenges and preparations.

Installing a new AC unit isn’t as simple as plug-and-play—it requires careful planning and professional expertise to maximize your new system’s performance and longevity.

Here are some of the challenges many homeowners face when installing a new HVAC unit:

• Unit size selection: Choosing a unit that’s too large or small can lead to inefficiency or overuse.
• Energy efficiency compatibility: Ensuring the unit aligns with your home’s energy requirements.
• Ductwork: Existing duct systems may need modification or repair for proper airflow.
• Electrical wiring: Some homes may need electrical upgrades to support the new unit’s power needs.
• Structural considerations: Proper placement of the outdoor unit to optimize performance and reduce noise.

Improper installation can lead to reduced performance, higher energy bills and premature system failure. Remember, if you’re an EPB customer, you can schedule a free consultation with the EPB Energy Pros to guide you through the process and avoid potential issues.

17. Maintenance Needs: Anticipating future servicing.

Regular maintenance is essential for keeping your AC unit running efficiently and extending its lifespan. A well-maintained system can help lower energy bills and reduce the risk of costly repairs. Key maintenance tasks to keep on your schedule include:

• Cleaning or replacing filters: Prevents clogs, ensures optimal airflow and reduces your energy bill.
• Checking refrigerant levels: Ensures proper cooling and prevents overworking your system.
• Servicing fan motors and belts: Prevents wear and tear that can lead to breakdowns.
• Cleaning evaporator and condenser coils: Improves energy efficiency.
• Inspecting ductwork: Ensures there are no leaks that reduce cooling efficiency.

Neglecting these tasks can lead to inconsistent cooling, higher energy consumption, and potential system failures. It may be worth your time to set up a seasonal maintenance plan with your local AC service—that way, you won’t need to remember to do these tasks yourself.

18. Future Home Plans: How imminent moves might affect your choice.

If you plan to move soon, you might be wondering whether to replace your AC unit. A new, energy-efficient AC system can boost your home’s market value and attract buyers. However, if your move is imminent, repairing your current system might be more cost-effective than a full replacement.

Balancing these factors can help you decide whether investing in a new system now will provide a return on investment.

19. Safety Aspects: Risk of harmful leaks and safety features.

Older AC units can pose safety risks, such as harmful coolant leaks, which can negatively impact both your health and the environment. Faulty systems may also lead to poor air quality or fire hazards.

Here are some of the risks that come with older AC units:

• Coolant leaks: Older systems may leak refrigerants like R-22, which are harmful to both health and the environment.
• Electrical hazards: Aging systems can have faulty wiring, leading to potential fire risks.
• Poor air quality: Damaged or dirty components can lead to poor indoor air quality, exacerbating respiratory issues.
• Overheating: Older units may overheat, causing mechanical failure or fire hazards.

Modern AC units come with enhanced safety features, such as improved electrical components and safer refrigerants, that mitigate these risks. Professional inspections, like those offered free of charge by your EPB Energy Pros, can help determine if your current unit poses any risks and guide you in making a safe replacement decision.

How to Proceed When Considering Replacing Your AC Unit

Before replacing your AC unit, we highly recommend seeking a professional consultation. If you’re an EPB customer, you can get FREE expert guidance from your EPB Energy Pros. We’ll help you choose the right unit based on your home’s specific needs and budget and give you advice on how to optimize your energy efficiency and comfort. Schedule a time to talk to a pro.

Once your new AC unit is installed, be sure to schedule regular maintenance with a licensed AC service. This can help prolong your system’s lifespan and keep it running efficiently. It can also prevent costly repairs.

If all goes well, your new energy-efficient AC unit should provide the following benefits to your household:

• Lower energy bills.
• More comfortable indoor air temperatures.
• Improved indoor air quality.
• Reduced carbon footprint.
• Fewer breakdowns and costly repairs.

Final Thoughts on Replacing Your AC Unit

The decision to replace your AC unit is a significant step, but it can greatly improve your home’s comfort, energy efficiency and cost savings. Choosing the right system and ensuring proper installation is key to enjoying these benefits.

That’s why a professional consultation is critical. Local AC or energy experts, like the EPB Energy Pros, can help you select the perfect unit, verify that your system is installed correctly and give you energy-saving tips.

With regular care and the right system in place, you’ll enjoy a cooler, more efficient, cost-effective home. Ready to make the switch? EPB Energy Pros are here to help! Schedule a free consultation.