The Best Time of Year to Install a New AC System

By Jimmy BlackUpdated onNov 27, 2025

Installing the air conditioner at the best time is still important, even though replacement may occur during the summer. Most homeowners are unaware of how much of a difference installing the appropriate air conditioner at the appropriate time of year can have. 

Residents of Raleigh, for example, frequently discover that “when should air conditioner systems be replaced” is a question that encompasses more than just performance and age. 

When it comes to pricing and installer availability, installing air conditioners at the appropriate time of year can have a significant impact. In cities with sharp seasonal temperature changes, such as Raleigh, interest in AC installation in Raleigh typically rises during quieter months.  

Before we talk about the best options during the different seasons of the year, it’s helpful to know what factors go into the price of installing a new system, which this blog post covers seamlessly.

Let’s begin!

Key Takeaways 

  • Understanding the actual cost of AC installation
  • Uncovering the benefits of upgrading utilities in the spring 
  • Looking at the urgent repair needs in the summer 
  • Discovering the situations in fall and winter 

What Actually Influences AC Installation Cost 

A few variables come into play regarding how much a new air conditioner will cost. Not only is the equipment important, but the cost of the technicians’ time and even the layout of the house are also important considerations.

Among the most prevalent of these factors are the following:

  • System size and efficiency rating
  • Seasonal demand and availability of installers
  • Brand and type of equipment
  • Other upgrades, zoning, or smart thermostats

No matter how cool your company of choice may be, installing the air conditioner during the peak season of summer can cost more because of the increased demand. This makes it even more crucial that you know the details of AC installation timing.

Interesting Facts 
Purchasing an AC unit during the off-season (winter/early spring) can result in substantial savings, with potential discounts of 25-40% compared to peak summer prices. During peak summer, prices can increase by 30-50% due to high demand.

Spring: The Strategic Upgrade Season

Spring is widely considered the best time to install Aan C for several reasons. This season comes with temperatures that are yet to peak. As a result, the demand has not yet peaked. Also, the companies that provide these services are available, and this time of year, people are not in a rush to replace their broken air conditioners.

This season often means:

  • Better scheduling flexibility
  • Promotional pricing or seasonal discounts
  • Time to weigh your options instead of rushing a replacement

Experienced installers will tell you that spring is the best season because it gives you time to prepare for the summer season, which comes with challenging conditions that will test the system. If your question is “when to replace an air conditioner proactively”, then the answer is spring.

Summer: When Replacement Becomes Urgent

Indeed, summer is the season of the year when most families realize their AC unit is near death. Because hot weather is harsh on air conditioners, this occurs.

But the downside of this approach could very well be the fact that the installation costs and the waiting times increase substantially during the summer months because everyone else is lining up their appointments too. You may get immediate attention during an emergency situation, but the best rates may not come your way.

Most local HVAC companies may serve customers who do not have air conditioning during the summer months first. But even then, availability can be limited.

Fall: The Quiet Season Advantage 

Fall is another great but underappreciated response to the best time to install an AC question. The weather patterns are favorable because one can live conveniently during the process of installation. Contractors are still experiencing their low season, so there may be better deals.

Additionally, the fall season provides homeowners with an opportunity to upgrade their system even before the costs of energy go up again during the next summer season. Plus, this season may be the right time for you to consider an evaluation of your heating and cooling system if an overall upgrade of the HVAC system is on your mind.

Winter: A Conditional Opportunity

Winter can prove to be a very favorable season for the installation of a new air conditioner—but not necessarily so for everyone. If your area experiences extremely low temperatures, the evaluation of the new air conditioner might not happen until spring. But if your area enjoys moderate winters, this season proves helpful because of flexibility, discounts, and fewer scheduling competitors.

Homeowners thinking of installing during the winter months should consider:

  • Will the system be fully functional and testable?
  • Is the installation team equipped to handle winter conditions?
  • Will there be additional costs if we wait until spring?

For those with dual heat pump systems, winter is actually a smart time to plan upgrades, since those units provide heat as well.

How to Know Your Right Timing 

Knowing the right season can be helpful ,but that is only part of the equation. The condition of your system may also affect this decision. Here’s how you can quickly assess your situation:

  • Is your system over 10-15 years old?
  • Do your energy costs keep going up every season?
  • Is the frequency of repair increasing?
  • Does your AC struggle with maintaining a comfortable temperature?

If you are answering yes to most of these questions, you already know your sign. Rather than waiting for the July meltdown, why not consider getting an evaluation during the spring or the fall?

In Conclusion

There isn’t a definitive timeline on when air conditioning system changes should happen; however, preparing early will save money and cut down on stress. Depending on your situation, winter and summer can work, but spring and fall are still the best times to install new systems.

Based on your experience, what season do you believe works best if you are looking at an upgrade? Let’s know your thoughts. Your input might help someone make the right decision.

What is the best time of year to replace an AC?

Fall and spring.

What is the 3-minute rule for AC?

The “3-minute rule” for air conditioners is the guideline to wait at least three minutes after shutting the unit off before turning it back on.

What are the new AC guidelines 2025?

On June 10, 2025, the Union Government announced plans to regulate air conditioner (AC) temperature settings to a range of 20–28°C.