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cost to replace air conditioning unit and furnace

How Much Does It Cost to Replace AC & Furnace? (2025 Updated Price)

When it comes to maintaining a comfortable living environment, replacing your furnace and air conditioning unit is a major decision. Both systems play critical roles in heating and cooling your home, and upgrading them together can save you both time and money in the long run. In this guide I will discuss cost to replace Air conditioning unit and furnace, its benefits and considerations for replacing your furnace and air conditioner, with expert insights on how to make the best choice for your home.

Why Should You Consider Replacing Your Furnace and AC Together?

Replacing your furnace and air conditioner at the same time offers several advantages that go beyond just convenience. Here’s why many homeowners opt for a combined replacement:

  • Cost Savings: Replacing both systems together often results in lower installation costs. When the contractor is already at your home for one unit, adding the other can save you on labor costs and fees.

  • Efficiency Gains: Installing new, more energy-efficient systems can significantly reduce your monthly energy bills. Modern furnaces and air conditioners are designed to work together seamlessly, improving overall efficiency and reducing energy consumption.

  • Prevents Unexpected Breakdowns: If your furnace is nearing the end of its lifespan and your AC is already showing signs of wear, replacing both systems at the same time avoids the hassle of separate replacements later.

Many homeowners who choose to replace their furnace and air conditioner at the same time enjoy increased comfort and fewer repairs. It’s often a wise investment to replace both units together rather than piecemeal.

Factors That Affect the Cost to Replace Air Conditioning Unit and Furnace

Understanding the factors that influence the price of replacing your furnace and air conditioning unit can help you make an informed decision. Here’s what to consider:

Unit Size and BTU Requirements

The size of your home and the required cooling and heating capacity (measured in BTUs or British Thermal Units) will determine the size of the unit you need. Larger homes require larger units, which generally cost more. A furnace or air conditioner that’s too small won’t efficiently heat or cool your home, while one that’s too large can lead to energy waste and high utility bills.

System Type

There are different systems available to choose from. Split systems are the most common, with separate units for the furnace and air conditioner. Packaged units are all-in-one systems that combine heating and cooling in a single unit, ideal for homes with limited space. The type of system you choose will affect the overall cost.

Brand and Efficiency

The brand you choose plays a significant role in the cost of the units. Well-known brands tend to have a higher upfront cost, but they often come with better reliability, warranties, and energy efficiency. Higher efficiency models typically cost more initially but save you money on energy bills in the long term.

Installation Complexity

The complexity of the installation also plays a major role in the price. If your home requires additional work such as new ductwork or modifications to your electrical system, expect the price to go up.

Location and Local Costs

Regional costs can vary, with some areas having higher labor rates or additional fees. For example, urban locations may see higher installation costs due to demand and cost of living.

Average Costs of Replacing a Furnace and Air Conditioner

So, how much can you expect to pay to replace both your furnace and air conditioning unit? The price varies based on the factors mentioned earlier, but here’s a rough estimate:

System TypeAverage Cost RangeDescription
Standard Split System$5,000 – $12,500Includes separate furnace and AC units; popular for most homes.
High-Efficiency Split$7,500 – $15,000Features variable-speed motors and higher SEER ratings for better efficiency.
Heat Pump System$9,000 – $20,000Provides both heating and cooling; ideal for moderate climates.
Geothermal System$20,000 – $100,000+Uses ground-source heat exchange; offers excellent efficiency but high upfront cost.

Bear in mind that these are general estimates, and the final cost may differ depending on your specific circumstances. Be sure to get multiple quotes to compare pricing.

For more detail read our blog: How much does a HVAC system cost?

How Much Does It Cost to Install Furnace and AC Combo?

When you decide to replace both your furnace and air conditioner at the same time, you may be considering a furnace and AC combo. Installing both systems together as a package deal typically results in a lower overall price.

For an efficient furnace and AC combo, the cost can vary from $5,000 to $8,000, depending on the size of the system and the complexity of the installation. Choosing a combo unit can save you anywhere from 10% to 30% on installation costs compared to replacing each system separately.

Factors to Consider Before Replacing Your Furnace and AC

Before you dive into replacing your furnace and air conditioner, it’s essential to weigh a few key factors:

Age and Condition of Existing Systems

If your furnace or AC unit is approaching 10-15 years of age or has been frequently breaking down, replacing it might be more cost-effective than continuing to repair it. New systems will not only work more efficiently but also reduce the chances of needing frequent repairs.

Energy Efficiency

Newer energy-efficient systems can significantly lower your energy bills. Look for units that are ENERGY STAR rated. These systems are designed to use less power while providing optimal comfort.

Repairs vs. Replacement

If your furnace or air conditioner is frequently needing repairs, it may be time for replacement. Repairing old systems can become more expensive over time, and eventually, the cost of repairs may exceed the cost of a new system.

System Compatibility

When replacing both your furnace and air conditioner, make sure that the new units are compatible with each other and your home’s existing infrastructure. Installing a system that works well together will ensure optimal performance and efficiency.

Types of Systems Available for Replacement

There are various types of systems available when replacing both your furnace and air conditioner. Here’s an overview of the most common options:

  • Split Systems: The most common heating and cooling solution for homes. Separate furnace and air conditioner units work together to provide year-round comfort.

  • Packaged Units: A single unit that combines heating and cooling. Ideal for homes with limited space, like those with no basements.

  • Hybrid Systems: Combine a gas furnace with an electric heat pump. These systems are highly efficient and are great for homeowners looking for versatility.

  • Geothermal Systems: Although more expensive, these systems use the earth’s natural heat to provide both heating and cooling. They are energy-efficient and environmentally friendly.

How to Save Money on Furnace and AC Replacement

Replacing your furnace and air conditioner is a significant investment, but there are ways to save:

Financing Options

Many HVAC companies offer financing plans with low or no interest for qualified buyers. Look into local rebates and energy-efficiency incentives that can help offset the upfront cost.

Professional Installation vs. DIY

Although it may seem tempting to save money by installing the units yourself, hiring a HVAC professional is usually worth the cost. Professional installation ensures that your systems are set up correctly and that you comply with local building codes.

Maintenance Packages

Once your new furnace and AC are installed, consider investing in a maintenance package. Regular tune-ups can extend the life of your system, keep it running efficiently, and prevent expensive breakdowns.

What’s Included in the Cost of Furnace and AC Replacement?

When you receive a quote for replacing your furnace and air conditioner, be sure to ask what is included in the price. Here’s a breakdown of typical costs:

  • Unit Price: The cost of the actual furnace and AC units.

  • Installation Fees: Labor costs for removing the old system and installing the new one.

  • Additional Work: If your ducts need to be modified or upgraded, this will be an additional cost.

  • Permits: In some areas, you may need permits for installation, which could add to the total price.

  • Taxes and Fees: Don’t forget to account for taxes and any disposal fees for the old units.

Common Mistakes to Avoid When Replacing Your Furnace and AC

When replacing your furnace and air conditioner, here are some common mistakes to avoid:

  • Choosing the Wrong Size: Installing a furnace or AC unit that is too small or too large for your home can lead to inefficiency and higher energy costs.

  • Ignoring Efficiency Ratings: Always consider energy-efficient models to save money on utility bills over time.

  • Skipping Professional Assessment: Always have a professional assess your home’s heating and cooling needs before making a purchase.

How Long Does a Furnace and Air Conditioner Last?

Most furnaces and air conditioners last between 10 and 15 years. After this period, they become less efficient and may require more frequent repairs. If your system is approaching this age and you are facing constant issues, it’s likely time to replace it. Newer systems will give you peace of mind and save you money in the long run.

Conclusion: Is Replacing Your Furnace and AC Worth the Investment?

In conclusion, replacing both your furnace and air conditioner at the same time is a smart investment for many homeowners. Not only does it save you money on installation, but it also improves your home’s energy efficiency and comfort. By considering factors like unit size, system type, energy efficiency, and installation complexity, you can make a decision that benefits both your budget and your home’s overall functionality. Always consult with a professional HVAC technician to help guide your decision-making process, ensuring that you choose the best system for your needs.

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