Can I Replace AC Without Replacing Furnace?Factors & Benefit

Rima Chatterjee

Can I replace the AC without replacing the furnace?

Can I Replace AC Without Replacing Furnace

Can you replace your AC without replacing the furnace when upgrading your home’s HVAC system? In many cases, yes. But, consider some factors first.

Check the age and condition of both the AC unit and furnace. If your furnace is aging (15-20 years), it may be best to replace both systems.

Are the systems compatible? Old furnace and new AC could be incompatible, causing poor performance or damage.

Make sure both systems are the right size for your home’s heating and cooling needs. A load calculation can help.

Pro Tip: Consult an experienced HVAC partner. They can help optimize energy efficiency and longevity while keeping costs manageable.

Remember, replacing AC is like getting a new spouse – but with less emotional baggage.

Factors to Consider Before Replacing Your AC Unit

Consider various factors before replacing your AC unit. Firstly, find out if only the AC unit or both the AC and furnace need to be upgraded. Secondly, calculate the right size of the new system to avoid temperature problems. Thirdly, assess the current system’s energy efficiency and output to decide if upgrading is cost-effective.

Additionally, think about the average lifespan and current issues when considering repair or replacement. Make sure components and technology are compatible with a diagnosis from a qualified technician. Upgrading your air conditioning can lead to improved efficiency and cost savings.

Many people opt for a new HVAC system due to warranty concerns or the greater overall value it provides. There have been cases of homeowners delaying replacement and incurring more costs, sometimes even causing fire or ice-related accidents.

It’s best to plan for upgrades sooner rather than later for better safety and savings. Families looking to upgrade their appliances can enjoy their home fully without worrying about major HVAC issues down the line. Replacing only your AC unit may seem fine, but don’t forget your furnace!

Replacing Your AC Unit Alone: Scenarios and Benefits

Replacing just the AC unit, and not the furnace, is a popular question among homeowners. Check out these scenarios and their benefits!

  • First, if your furnace is relatively new, you can upgrade to a high-efficiency air conditioner. This boosts efficiency and provides better cooling power. Plus, you save money in the long-run.
  • Second, if your furnace is aging, but you don’t want to replace it yet, replacing just the outdoor AC unit may be more cost-effective. But, it might limit system performance and comfort.
  • Third, for a well-functioning HVAC system, components must be compatible. If you’re looking to optimize energy, it’s best to upgrade both units (furnace and AC) at once to reduce the risk of failure down the line.

Definitely consult an experienced technician who can assess your system’s needs. And, consider investing in higher efficiency systems with SEER ratings that match your climate for top-notch performance and low energy costs.

Ready to replace your AC without the furnace? Take a deep breath – it’s gonna be a wild ride!

How to Replace Your AC Unit without Replacing Your Furnace

Replacing just the AC unit? Here are a few steps to follow:

1Check the age and condition of the blower motor and evaporator coil.
2Calculate the right size and capacity for your home.
3Choose a high-efficiency AC unit with a SEER rating of 14+.
4Hire an experienced HVAC contractor to install it.
5Upgrade other problem areas such as ductwork or thermostats.
6Enjoy the energy savings and comfort benefits!

But remember, sometimes it’s better to replace the whole system for optimal performance. A customer recently found this out the hard way. After consulting with an HVAC partner, they replaced the entire system – and never looked back!

Mixing and matching components can work too – just like wearing stripes and polka dots!


Replacing only an AC can be an option – if the furnace is still in decent condition, compatible with the new AC unit, and has enough capacity. But if the furnace is close to its average lifespan or shows signs of problems, you should upgrade both units together.

Matching up AC and furnace is essential for optimal comfort, efficiency and long life. Get a pro to assess your home’s needs, and to suggest the best replacement plan, based on factors like size, zoning, insulation, sun exposure, outdoor temp, air quality etc.

Upgrading both parts at once has a benefit – full warranty for both parts and labor. Plus, you avoid compatibility issues between brands or models. Choose a licensed and insured HVAC partner who can ensure proper installation and after-care services. That will help you get the best value for many years!

About the author

Debarghya Roy: A heating systems author, Passionate about energy efficiency and sustainability, Sharing insights and empowering readers through informative blog articles.