December 16, 2025
If your furnace and air conditioner are on their last legs, you might be dreading the replacement process and the cost. Replacing an entire HVAC system is a significant home investment. But there’s a smart way to manage the expense: bundling the furnace and AC replacement.
This guide breaks down the furnace and AC replacement cost for 2025. We’ll explain why replacing both units at the same time is a financially savvy move, what factors influence the price, and how to protect your new system for years to come.
The average furnace and AC replacement cost in 2025 ranges from $5,000 to $14,000, with a typical price around $8,500.
Bundling the installation can save you hundreds or even thousands on labor and unlock greater energy efficiency.
Factors like system size, efficiency ratings, and your home’s ductwork will impact the final cost.
Using high-quality pleated air filters, like MERV 8–13, is a simple and effective way to protect your new HVAC system and maintain its performance. Filterbuy is your trusted source for these essential filters.
It might seem more expensive to replace two systems at once, but bundling often leads to significant savings and better long-term performance.
When you replace your furnace and AC separately, you pay for labor twice. Technicians have to come to your home for two different installations, which means double the service fees and time. By bundling, you consolidate this into a single job, drastically cutting down on labor costs.
Beyond the immediate savings, bundled installations ensure your new systems are fully compatible. A new, high-efficiency air conditioner paired with an old, struggling furnace won't perform at its peak. Mismatched systems can lead to frequent breakdowns and reduced efficiency. A matched system, on the other hand, works together seamlessly.
Finally, a new HVAC system is a major investment that deserves protection. The single best way to protect it is with proper air filtration. High-quality filters prevent dust, debris, and allergens from clogging sensitive components, ensuring your new system runs smoothly from day one.
Based on industry data for 2025, homeowners can expect the cost to replace a furnace and AC together to fall between $5,000 and $14,000.
Where your final quote lands within that range depends on several key factors. Here’s what that means for you:
Home Size & Ductwork: Larger homes require more powerful (and more expensive) HVAC units. The condition of your existing ductwork also plays a role; repairs or replacements will add to the cost.
Efficiency Ratings: Systems are rated by SEER2 (Seasonal Energy Efficiency Ratio 2) for ACs and AFUE (Annual Fuel Utilization Efficiency) for furnaces. Higher ratings mean greater energy savings but a higher upfront cost.
Electric vs. Gas Furnace: The type of furnace you choose will affect the price. Gas furnaces often have a higher initial cost but may offer lower operating costs depending on local utility prices.
Refrigerant Changes: New environmental standards may require upgrades to your system’s refrigerant lines, which can add to the installation complexity and cost.
Installation Complexity: A straightforward replacement in an easily accessible space will cost less than a complex installation requiring new wiring, ductwork modifications, or difficult access.
There's a common misconception that powerful, pleated air filters are "bad" for HVAC systems because they restrict airflow. This is simply not true for modern systems. In fact, experts recommend high-quality pleated filters to protect your equipment and improve your home’s air quality.
Here are the benefits of using a pleated filter with a MERV 8 to MERV 13 rating:
Protects System Components: These filters capture dust, pollen, pet dander, and other debris that can damage your new furnace and AC, helping you avoid costly repairs.
Improves Indoor Air Quality: By trapping more airborne particles, pleated filters create a healthier living environment for you and your family.
Helps Maintain Efficiency: A clean system runs more efficiently. Quality filters prevent the buildup that forces your HVAC unit to work harder, keeping your energy bills low.
Ensures Better Airflow: High-quality filters, like those from Filterbuy, are designed to provide excellent filtration without unnecessarily restricting airflow, keeping your system running as intended.
Filterbuy is the best place to find top-quality pleated filters to safeguard your investment. We make it easy to find the right size and MERV rating for your new system.
Beyond bundling, here are a few more strategies to lower your overall cost:
Many utility companies and government programs offer rebates for installing energy-efficient HVAC systems. Check with your local provider and look for federal tax credits to see what you qualify for.
While the highest-efficiency model might seem appealing, it isn't always the most cost-effective choice. Your climate dictates the ideal SEER2 and AFUE ratings. A professional can help you find the sweet spot between upfront cost and long-term energy savings.
Many HVAC companies offer financing plans that allow you to pay for your new system over time. This makes the initial investment more affordable and lets you start saving on energy bills right away.
This is one of the simplest and most effective ways to save money in the long run. Regularly replacing your air filter prevents wear and tear, maintains efficiency, and helps you avoid expensive repairs. Filterbuy offers a convenient subscription service so you never forget to change your filter.
Not sure if you need a full replacement? Here are some clear signs that it’s time to upgrade both your furnace and air conditioner:
Age: If your systems are over 15 years old, they are likely nearing the end of their lifespan.
Frequent Repairs: Are you constantly calling for service? The cost of frequent repairs can quickly add up and may be better put toward a new system.
Rising Energy Bills: A sudden spike in your utility bills often indicates that your HVAC system is losing efficiency.
Inconsistent Temperatures: If some rooms are too hot while others are too cold, your system is struggling to distribute air evenly.
Noisy Operation: Banging, rattling, or grinding noises are a sign of serious mechanical problems.
Protecting your new HVAC system starts with the right filter, and Filterbuy is the trusted choice for homeowners across the country. We offer:
Easy, Convenient Ordering: Our website makes it simple to find the exact filter size you need.
Reliable Replacement Schedules: With our subscription service, you’ll get fresh filters delivered to your door on your schedule.
High-Quality MERV 8–13 Pleated Filters: Our filters are designed to protect your HVAC system, improve air quality, and maintain efficiency.
A new furnace and AC are a major investment. Using high-quality filters from Filterbuy helps you maximize the lifespan of your new system and ensure it runs efficiently for years.
The average cost to replace both a furnace and an AC unit in 2025 is between $5,000 and $14,000, with a typical cost of around $8,500.
Yes, it is almost always cheaper. Bundling the installation saves significantly on labor costs compared to replacing each unit separately.
Key factors include the size of your home, the system's efficiency ratings (SEER2 and AFUE), the condition of your ductwork, and the complexity of the installation.
Look for signs like systems older than 15 years, frequent repairs, rising energy bills, inconsistent temperatures, and loud noises. If both units are of a similar age, it's wise to replace them together.
No, this is a myth. High-quality pleated filters are recommended by experts because they effectively capture dust and debris without harming modern HVAC systems.
A MERV rating of 8 to 13 is ideal for most residential homes. This range offers excellent filtration to protect your system and improve indoor air quality without restricting airflow.
With proper maintenance, including regular filter changes, a new furnace and AC system can last 15 to 20 years.
Rebates vary by location and utility provider. Check your local utility's website and the U.S. Department of Energy for information on energy efficiency incentives and tax credits.
Absolutely. Using high-quality pleated filters prevents dust and debris from accumulating on sensitive components, reducing wear and tear and helping your system last longer.
Filterbuy offers a wide selection of high-quality pleated filters in all sizes and MERV ratings. Our subscription service makes it easy to get the right filters delivered to your door on time.
