Should You Replace Your Furnace and AC at The Same Time?

Having a reliable HVAC system improves your indoor comfort. However, there are times the AC can be faulty, but the furnace is fine, and vice versa. And when this happens, most homeowners aren’t sure of what to do.

In fact, many will struggle with these nagging questions: should I replace my furnace and air conditioner at the same time? Or should I replace the faulty part only and save the cost?

Well, if it’s possible to replace that furnace and AC at the same time, go for it. While you can replace one and leave the other, upgrading both systems is the best idea.

In the long run, you might save money and, of course, future headaches as you’re certain both heating and cooling systems are working. Plus, it makes the HVAC system much more energy efficient.

Should I Replace My Furnace and Air Conditioner at the Same Time or Not? Top Reasons Why You Should

Are you wondering whether replacing that furnace and air conditioner together is better? Here are several reasons why it can be a great idea:

1. Better Energy Efficiency

One reason why you should replace your furnace and air conditioner at same time is to improve energy efficiency. A faulty HVAC system can cost you a fortune through skyrocketing energy bills. So, when you finally agree with the HVAC technician to replace the faulty AC, also go for the furnace system.

Modern HVAC systems perform way better when it comes to energy efficiency. So, if you still have an older AC and furnace, replace both units if you want to pay less in energy costs.

Usually, the latest HVAC systems have a higher SEER rating. And the government’s minimum rating is 13 SEER. So, you might want to choose a higher SEER rating, let’s say 15, as this minimum might change with time.

This is not only good for indoor comfort and lowering energy bills. The modern systems are also eco-friendly. This means that you save on energy costs using better HVAC systems, improve energy efficiency, and take care of the environment.

2. Long-term Investment

Many people worry about the cost of replacing the furnace and AC together. Indeed, new HVAC systems aren’t cheap, especially when you opt for those with a high SEER rating. But, viewing this as a long-term investment that will save you money is best.

When you replace the AC and leave an old furnace running, you pay more to heat the house. And while replacing a furnace and air conditioning will cost a lot of money, it’s better to do so now. That way, you don’t have to spend more on energy and still have to replace the furnace in the future.

A good furnace and AC will help you save both on energy costs and repairs. A faulty HVAC system will keep requiring HVAC repairs which aren’t cheap. And, since you need to stay cool in summer and warm in winter, you might have no choice but to keep paying for HVAC repairs.

Therefore, opt to replace AC and furnace together to save on cost. This also means you won’t have to pay double for HVAC installation in your home. Speak with the HVAC company and get a comprehensive HVAC installation cost to replace the furnace and air conditioner at the same time.

3. Increase HVAC System Lifespan

Imagine running an HVAC system where the AC is new, and the furnace is old. Eventually, the old furnace will take a toll on the new AC causing it to perform poorly. Also, the old furnace affects the new AC’s lifespan, which can cost you more.

This is why it’s better to replace that furnace and air conditioner simultaneously. When you have a new HVAC system at home, you can use it for a long time. And after you replace the furnace and AC, all you need is proper HVAC maintenance, and you’re good to go.

Also, manufacturers can refuse to honor warranties when you pair a new AC with an old furnace. One way to ensure the warranty sticks is to replace both the furnace and air conditioner.

Replace My Furnace and Air Conditioner Together: When Not To

It’s better to replace the furnace and air conditioner together. But are there reasons why you can skip this and only replace one?

1. High Cost

A new HVAC system consisting of a modern AC and furnace isn’t cheap. And, when you have a broken furnace or air conditioner, you should replace both. But, only do so when you can afford it as the cost can be quite high.

When you replace the AC and furnace together, you must have enough funds for both systems. This also includes the cost of HVAC installation in your home. It’s better to have the worst one replaced and the other repaired instead of placing yourself in a financial corner.

2. Proper Working System

Before you replace AC and furnace together, consider the age. Is one system fairly new and still performs well?

If so, you might not need to replace the furnace and air conditioner at the same time. Instead, have an HVAC technician do proper maintenance to keep it in tip-top shape.

Now you know the answer to the question, “should I replace my furnace and air conditioner at the same time?”.

Replace Furnace and AC at Same Time Cost for the Average Homeowner

Cost is a huge factor to consider when you want to replace the AC and furnace together. On average, you might have to pay $5500 for a new furnace for your home. Usually, the range for new furnaces is $2600 to $6500, depending on where you live and the system’s AFUE rating.

On the other hand, a new AC unit can cost you anywhere from $3800 to $7500. The cost depends on the model and SEER rating. So, when you want to replace your furnace and air conditioner at the same time, it’s important to note these costs.

At the end of the day, you want to do something that will benefit you in the long run but not leave you in a financial crisis. So, if replacing furnace and air conditioner units at the same time is what you must do, do it. 

But, always find ways to help reduce the price if you can. For instance, some manufacturers will offer good discounts when you replace the whole system.

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