Should I Replace AC and Furnace At The Same Time?

Posted by: Mas Broto
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Replacing your air conditioning system and furnace at the same time might seem extremely difficult, but replacing both can save you energy and money in the long term. Before making any decision, though, it’s best to learn about how new technology works and how it can benefit your home. Read on to find out the pros and cons of replacing your furnace and AC at the same time for your home.

When it’s time to think about replacing one or both of your systems, you might be tempted to only replace the one that’s giving you the most trouble and wait to buy the other one until later. You could also think about getting a new system for the next season. But in the long run, you can save energy and money by replacing both HVAC systems in your home, even if one hasn’t reached the end of its life.

Benefits of Replacing Air Conditioner and Furnace at the Same Time

Here are some of the benefits of installing a new AC and furnace at the same time:

Energy Efficiency

Air conditioner systems being made today are a lot more efficient than systems built a decade ago. They use a lot less energy too. Still unsure? You can check the Seasonal Energy Efficiency Ratio rating to learn which systems are different from others when it comes to energy usage. The higher the SEER number is, the less energy is used. Therefore, the lower it is to cost to operate. Newer systems have a SEER number of at least 16.

Furnaces have ratings called AFUE (annual fuel utilization efficiency), which is a measure of seasonal performance. It is recommended to buy a system that has an AFUE of 95% or higher for a new, efficient furnace.

Cost Savings Over Time

You will save money with a matched system because if repairs are needed, both systems will be under warranty. Also, all of the components are designed to work together efficiently over time. The installation process is also less complicated because by replacing one and waiting to replace another, you will have to pay a second installation fee.

Complement Each Other

A furnace and air conditioning system share the same air handler. A matched system will allow both systems to operate properly, giving you the comfort you need at home.


You might not think about it, but it makes sense that mixing old and new technology can decrease the performance of your system. Replacing just one system can effectively lower the performance of both. New, highly efficient systems are installed together to allow you to utilize the new technology to its full potential.

Home Value

Your home’s value will increase with the installation of new technology systems. House shoppers are going to be looking for maximum efficiency and modern convenience for household air conditioning and heating systems.


Deciding to only upgrade one system can lead to frustration and unnecessary costs. Matching a new system to an old one could decrease the life span and efficiency of the new system you just purchased. Also, Make sure your technician goes over the warranty with you so you understand that you are protected if they break or other issues occur.

In the market for new AC and furnaces? Here is a guide for you:
# AC Buying Guide
# Furnace Buying Guide

The average modern furnace will last between 15 and 20 years. A central air conditioning system will last between 12 to 15 years. Both of these depend on the quality and efficiency of the equipment. Since there are years that can overlap, replacing both AC and furnace at the same time might make sense to save time and money.

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Mas Broto
Have been in the heating and air conditioning (HVAC) industry for over 20 years. He is person that will grow and thrive to learn more about the HVAC industry throughout his career. Mas Broto is also a blogger, who's dedicated to bringing you the best knowledge to get ahead in the game of life.