If you’re planning to install or replace an HVAC system in 2025, one of the first questions you’ll have is: How much does it cost? On average, the cost to install a new HVAC system with ductwork is between $7,000 to $16,000 and the cost to replace an existing system runs $5,000–$11,000.
If you’re looking to install or replace your heating and air conditioning system in Washington, use this guide to plan and finance your HVAC project.
Average HVAC Installation Cost
The average cost of new heating and air conditioning system ranges from $5,000 to $10,000. The final price depends on the type of system, its efficiency rating, and the size of your home. Larger homes or those requiring higher-capacity systems will generally fall on the higher end of this range.
Average HVAC Replacement Cost
The average cost of replacing heating and air conditioning system is $5,000 to $11,000, depending on the size of your home, the type of system you choose, and whether any additional work is required.
Cost of HVAC Installation by System Type
- Central Heat and Air Systems: $4,500 – $9,000. These systems use ductwork to distribute heated or cooled air throughout your home.
- Ductless Mini-Split Systems: $3,000 – $8,000. Ideal for homes without existing ductwork, these systems provide targeted heating and cooling for individual rooms.
- Heat Pumps: $5,000 – $12,000. These energy-efficient systems provide both heating and cooling by transferring heat rather than generating it.
- Furnace Systems: $3,500 – $7,500. Furnaces are often paired with air conditioners for a complete HVAC solution.
- Geothermal Systems: $15,000 – $30,000. These systems use underground heat for efficient temperature control but come with a significantly higher upfront cost.
What Factors Affect HVAC Installation and Replacement Costs?
Many factors influence the cost of a heating and air conditioning system. This is why it’s so important to find a reliable and professional HVAC contractor in Olympia, WA who has a reputation for transparency and five-star customer service. Here, we discuss in detail the factors that influence the cost of installing an HVAC system in Washington State so you can better anticipate the total cost of your project.
Home Size and Layout
The size of your home directly affects the size and capacity of the HVAC system you need. Larger homes require systems with higher BTU (British Thermal Unit) ratings to effectively heat and cool the space. For instance, a 2,000 sq. ft. home might need a 3-ton system, which costs more than a 2-ton system suited for a smaller home. Complex layouts with multiple levels may also require additional zones or ductwork, increasing their costs.
System Type
Different systems come with varying price points, as discussed earlier. Energy-efficient models or systems with advanced features will cost more upfront but save money in the long run. A standard central air system might cost $5,000, while a high-efficiency heat pump with smart thermostat integration could cost $12,000.
Ductwork Requirements
If your home has existing ductwork in good condition, installation costs are lower. However, if ductwork needs to be repaired, replaced, or newly installed, expect additional expenses. For instance, adding ductwork to a 1,500 sq. ft. home could cost an extra $2,000 to $5,000.
Energy Efficiency
Energy-efficient systems with higher SEER (Seasonal Energy Efficiency Ratio) ratings or ENERGY STAR certifications often cost more upfront but can reduce utility bills over time. Upgrading to a system with a SEER rating of 18 instead of 14 may add $1,500 to the initial cost but save hundreds annually in energy bills.
Installation Complexity
The complexity of the installation process can impact costs. Homes with tight spaces, unconventional designs, or challenging access points can require more labor and time. If you have an older home with limited crawl space or attic access, you might have to add $1,000 to $3,000 in labor costs.
Climate and Location
Your region’s climate and local labor rates can also influence costs. Coastal areas often require systems designed to handle high humidity, while inland areas might need heating solutions for colder winters.
For example, a heat pump system, which works efficiently in moderate climates like the western part of Washington, might cost $8,000 to $12,000. However, homes in eastern Washington might require a dual-fuel system with a furnace backup, increasing costs to $10,000 or more.
Permits and Codes
Washington State has specific building codes and permit requirements for HVAC installations. These regulations ensure safety and energy efficiency but can add to your project’s overall cost. Permit fees in Washington can range from $150 to $500, depending on your local jurisdiction. Additionally, inspections may be required to ensure compliance with energy efficiency standards, which could slightly increase labor costs.
Professional HVAC Services in Olympia, WA.
Sunset Air is a trusted name for expert HVAC services in Washington. Our HVAC services include everything from installation and replacement to repairs and maintenance, so no matter what your needs are, we can help.
Got an emergency? Contact our 24-hour emergency service at 360-565-5890. Whether it’s routine maintenance or an urgent fix, Sunset Air is ready to help and keep your home comfortable. We serve customers in and around Olympia, WA, including Lacey, Tumwater, Yelm, Shelton, and Centralia.
Frequently Asked Questions
Is it cheaper to repair or replace an HVAC system?
Repairs can cost a few hundred dollars, but if the system is over 10 years old or repairs exceed 50% of replacement costs, replacing your HVAC system may be the cheaper option.
What is the most energy-efficient HVAC system?
Heat pumps and geothermal systems are among the most energy-efficient options, though they come with higher upfront costs.
Does replacing an HVAC system include ductwork?
Not always. If ductwork is in good condition, it may not need replacement. New ductwork can add $2,000 to $5,000 or more.
How much does HVAC maintenance cost annually?
Maintenance plans usually cost between $150 and $500 per year, depending on the services included.
Are there tax credits or rebates for installing a new HVAC system?
Yes, energy-efficient systems may qualify for federal tax credits or local utility rebates. Check with your installer for details.
