Your air conditioner laborers away each summer. Gradually, the system starts to wear out. Sometimes, a repair will fix the problem. Other times, it’s wiser to fully replace your AC. 

Learning the difference could save you thousands of dollars and countless headaches. Here are several reasons why you should replace your AC rather than repairing it.

The System Is Old 

Age is one of the first factors you should consider. Central AC units typically last around 10–15 years. However, with exceptional care and cooler climate, they can sometimes make it to 20 years or more. In Texas, most air conditioners do not reach 15 years because they’re running nearly year-round.

If your unit is over a decade old and starting to fail, don’t keep throwing money at repairs. Older systems simply do not operate as efficiently as newer models. Replacement parts become harder to come by. The labor rates will usually be higher as well. Eventually, it just becomes cheaper to bite the bullet and purchase a new AC unit.

Your Energy Bills Are Rising 

Notice your electricity bill creeping higher without changing your cooling habits? That’s a major sign. 

As your AC ages, it must work harder to cool your house. Your air conditioner runs for longer cycles to reach your desired temperature. Running more often means your system is consuming more electricity. Instead of paying less each month, your energy bills only go up.

Review your utility bills from the last few summers. If costs are gradually increasing without a change in consumption or rate, your AC is losing efficiency. Investing in a newer high-efficiency unit can save you money each month on your electric bill.

You Have Multiple Repair Bills 

Everyone runs into small issues with their AC every once in a while. But if you’re contacting your HVAC tech more than once a season, consider upgrading your system.

Many HVAC professionals follow this rule of thumb. Multiply your unit’s age by the repair’s estimated cost. Is the end result greater than $5,000? Then you should probably replace your current AC.

For instance, if your unit is 10 years old and your repair bill is $600, you end up with $6,000. That’s a good time to pull the plug on your old system.

Likewise, if a single repair bill is more than half of your system’s value, SKIP THE REPAIR. You’re better off investing that money into a new AC system.

Your AC No Longer Cools Your Home 

We covered this one already, but it’s worth repeating. If your air conditioner blows hot air or isn’t cooling like it used to, listen up.

This is usually a sign of a refrigerant leak or failing compressor. Not only are these problems expensive to fix, but they also indicate your unit is very close to complete failure.

Walk around your house on a warm day. Are certain rooms hotter than others? Maybe your coolant is spreading unevenly. Another red flag that you should replace your AC.

Strange Sounds are Emanating From Your Unit 

A properly operating AC unit should not make ANY noise. If you notice new grinding, clanking, rattling, or banging sounds, something is wrong.

Grinding noises typically mean one of the motors is going out. Clanking or banging may be caused by loose or broken components in the system. Rattling could be due to debris caught inside your unit.

Fixing these problems will require you to open up your air conditioner. The longer you let strange noises persist, the more damage your system will endure.

Newer systems can almost always repair these symptoms. But if your AC is on the older side, strange noises are a precursor to future failures.

You Smell Odors When the AC is Running

Your air conditioner shouldn’t smell like anything. When it does, take notice. 

Musty/mildew odors are a sign that mold is present somewhere in your AC system or ductwork. Not only is this a nuisance, but it can also cause health issues. Mold spreads throughout your home every time your system turns on.

Smells of burning could indicate wiring problems or an impending motor failure. Chemical smells mean you probably have a refrigerant leak. All of these issues are expensive to repair. Plus, they lead to bigger problems down the road. Old units that start producing strange smells are almost always best replaced.

The AC Turns On and Off Frequently 

Have you noticed your air conditioner turning on and off more frequently? This is known as short cycling. 

Short cycling puts heavy strains on your AC. NHS experts in AC units noted to us that it uses more electricity and will wear down the compressor faster. Not only does your AC struggle to cool your home properly, but it’ll also break down more easily.

The issue may be resolved by cleaning a dirty air filter or replacing your thermostat. However, short cycling is typically linked to bigger problems in older systems. Compressor failure or refrigerant issues are often the cause. If repairs can’t fix it, replacement is your only other option.

It Uses an Old Type of Refrigerant 

Back in the day, AC units used something called R-22 for refrigerant. This chemical was eventually discovered to be harmful to the environment, so it was banned in the United States.

However, older air conditioners still use this refrigerant. If your unit needs recharging, expect to pay through the nose. Since it can no longer be manufactured, existing supplies are dwindling. The price of R-22 continues to skyrocket each year.

If your air conditioner uses R-22, consider replacing it ASAP. Not only will you get a more efficient unit, but you won’t have to worry about expensive recharge fees in the future.

Should You Repair or Replace Your AC? 

As you can see, some repairs can be worth it. But if your AC shows three or more signs on this list, it’s time to call the dreaded plumber. You’ll thank you later! Don’t wait until your air conditioner completely dies to take action. Beat the Texas heat by upgrading your AC before summer arrives.

Case Study: By Replacing Old AC System Energy Bills Went Down

The customer owned a commercial building that was plagued by higher than normal utility bills and increasing maintenance costs from an old HVAC system. The air conditioner was over 15 years old and seemed to be breaking down more often. Cooling was also uneven and energy bills were on the rise.

An energy audit was performed and it was decided to replace the old air conditioner with a new high-efficiency system. New cooling equipment, controls and energy efficient components were installed to improve efficiency and lower overall electrical usage.

Results after air conditioner replacement included: 

Monthly energy savings 

Better comfort 

Fewer maintenance issues 

Even cooling 

More reliable cooling during hotter months 

Need Advice About Your AC? Ask The Pros 

This case study highlights a reality for many homeowners. Just because your air conditioning system needs repairs doesn’t mean you shouldn’t consider replacing it. Sometimes putting money into a new high-efficiency air conditioner can save you more money over the long run.

https://michaelandson.com/blog/can-a-new-air-conditioner-reduce-your-cooling-bills 

Read through some commonly asked questions about air conditioner replacements below.

FAQs: Air Conditioner Replacement 

How do I know when to replace my AC?

Increased energy bills, constant repairs, inconsistent cooling, strange noises, foul odours, short cycling, and aged systems over 10-15 years are all signs that it may be time to replace your air conditioner.

How long should an air conditioner last? 

On average, air conditioning systems last about 10-15 years. With good airflow and annual maintenance, some systems can make it up to 20 years. Of course, there are many other factors that affect the durability of your air conditioner.

Is it worth replacing an old air conditioner?

If your system is under 5 years old and the repair is inexpensive then it’s probably worth repairing. If your air conditioner is older, needs frequent repairs or the repair costs are more than half of what a new system would cost it’s usually best to replace it.

What are symptoms of a bad AC? 

Some symptoms of a bad or failing AC are:

Increasing energy bills 

Cooling cycles seem to take longer 

Weak airflow from vents 

Hot and cold spots in rooms 

Feel humidity inside your home 

Hum seems like it’s on constantly 

Why do my energy bills keep going up?

Cooling systems become less efficient as they get older. Parts can wear out and the system has to work harder to produce the same amount of cooling. This results in higher energy bills. 

What does short cycling mean? 

Short cycling is when your air conditioner turns on and off without properly finishing a cooling cycle. Short cycling causes unnecessary wear and tear on your system and can greatly reduce your system’s lifespan.

Should I replace my R-22 air conditioner? 

For most people, the answer is yes. R-22 refrigerant is no longer being mass produced which could result in higher maintenance costs. By replacing your AC now you’ll be upgrading to a newer more efficient model.

Will a new AC lower my electric bill?

Yes! By installing a new energy-efficient air conditioning system you’ll lower your energy usage and may even begin to see lower monthly electricity bills.

Why aren’t some rooms cooling? 

Rooms that are hotter or don’t cool right can be caused by dying equipment, malfunctioning parts, blocked airflow, duct leaks, low refrigerant or even an incorrectly sized AC system.

What sounds do failing air conditioners make? 

Pay attention to your air conditioner if you hear:

Grinding noises 

Banging or clanking 

Rattling sounds 

Squealing noises 

These sounds can indicate a serious problem. 

What smells should I worry about with my AC?

If your AC smells musty there could be mold growth in the system. Smells of burning could mean you have an electrical problem. If you smell something that resembles coolant your HVAC system may be leaking refrigerant. All of these issues should be checked by an HVAC professional.

Will a new air conditioner increase the value of my home?

Installing a new HVAC system can increase your home's value by promoting lower operating costs and better comfort. Potential home buyers may also be more attracted to your home knowing the AC doesn’t need to be replaced anytime soon.

What are the advantages of upgrading my air conditioner?

Some benefits of upgrading to a newer air conditioning system include:

Higher energy efficiency 

Lower energy bills 

Better comfort 

Quieter operation 

Improved indoor air quality 

Lower maintenance costs 

Increased reliability 

Smart thermostat technology 

When should I replace my air conditioner? 

Late spring and early fall are ideal for air conditioner replacement. Not only will you beat the rush but your AC installer will have more availability and the weather will be easier to work in.