A new HVAC system can be a big investment, and it requires the complete replacement of your current system and, in some cases, new ductwork. However, central air conditioners don't last forever and you'll eventually need to replace yours. In this blog post, we'll show you five warning signs that you should replace your central AC as well as what to look for when you're in the market for a new one.

1. The air is no longer as cold as it used to be

One of the most obvious signs that your AC is no longer working as it should be is a noticeable change in the temperature of the air coming out of the vents. If you turn on your AC unit and cool air doesn't come out within a few minutes, or if the air that does come out isn't as cold as it used to be, then your AC unit is no longer working efficiently and needs to be replaced.

Another sign that your AC unit isn't working properly is if it's running all the time but your home never feels cool. This could be because the Freon levels are low or because the unit is too small for your home.

2. It starts to make noise

Your central air conditioning unit will always make some noise—that's just part of the way it works. However, if you start to notice strange new noises coming from your AC unit, it could be a sign that something is wrong and needs to be fixed.

Some common noises that indicate your AC unit needs to be replaced include hissing, banging, or popping sounds. If you hear any of these noises coming from your AC unit, it could mean that the compressor is failing. Another noise to listen out for is a grinding sound, which could be a sign that the motor bearings are wearing out. If you've been diligent about maintaining your AC unit and it's still making strange noises, then it's definitely worth further investigation.

3. Your energy bills begin to climb

Newer AC models are much more energy-efficient than older ones, so if you notice your energy bills going up without a change in your AC usage, it might be a sign that your AC unit is no longer working as efficiently as it used to.

Older AC units can also cause your utility bills to spike because they cycle on and off more frequently than newer, more efficient models. If you notice your energy bills going up even though your usage hasn't changed, replacing your air conditioning system could be a good way to reduce your costs.

In addition to energy bills, another cost to consider is the repair bill. If your AC unit is starting to break down, you may find yourself paying for more and more repairs. Eventually, it will make more financial sense to replace the entire unit than continue paying for repairs.

4. You've had the system for over 10 years

AC units usually last about 15 to 20 years, but in places with hot summers, such as Arizona, they may only last about eight to 12 years. If your unit is over a decade old, it's likely time to start thinking about replacing it. Even if your AC unit isn't showing any other signs of wear and tear, the simple fact that it's been working for over ten years means that it's nearing the end of its lifespan. Once it reaches this point in its life, it will likely start to experience more problems and will become less energy-efficient.

5. You're remodeling your home

Not all remodels will require that you update your air conditioning system, but if you're planning a major renovation, such as an addition or a second story, then it's likely that your current AC unit will no longer be sufficient.

If you're planning any type of home remodel, it's a good idea to consult with an HVAC contractor to see if your AC unit needs to be updated. Depending on the size and scope of your remodel, you may need to install a new AC unit or upgrade your existing one.

Tips for Buying a New AC Unit

Now that you know the signs that indicate it's time to replace your air conditioner, what should you do next? If you're in the market for a new air conditioning system, there are a few things to keep in mind:

Look for units with a high SEER number

The higher the SEER number, the more energy-efficient the unit will be. This translates directly to ROI—the quicker you save money with your new system, the sooner you'll recoup the cost of your investment.

Systems with higher SEER numbers are also quieter than models with lower SEER numbers. If you choose a unit with a high SEER number, you'll be able to avoid much of the humming that many believe to be an inevitable part of having an AC unit. A good SEER number is around 20, but you can find ENERGY STAR units with SEER numbers as low as 14.5. Anything lower than that rating, and you're not getting an energy-efficient system.

Get a unit that's the right size for your home

If your unit is too small, it won't be able to effectively cool your home. On the other hand, if it's too large, it will use more energy than necessary and will cycle on and off more frequently, which can shorten its lifespan.

The best way to ensure you get a unit that's the right size for your home is to have a load calculation done. This will consider the square footage of your home, the number of windows, the insulation, and other factors in determining the perfect AC unit size for your needs.

Get professional help with your purchase

While it is possible to install an AC unit on your own, it's always best to work with a professional company like Williams Comfort Air when making such a big purchase. Doing so will ensure that your unit is properly sized and installed and that it comes with a warranty.

A professional company will also be able to help you choose the right type of AC unit for your home. There are many different types of units on the market, and each has its own set of benefits and drawbacks. Working with a professional will help you find the perfect unit for your needs.

Endnote

Replacing your central air conditioning unit is a big decision, but it doesn't have to be a difficult one. If you're unsure of whether or not it's time to replace your AC unit or which one to choose, the best thing to do is consult with a professional. They will be able to help you assess the condition of your unit and make a recommendation based on your specific needs.