What Is the Cost to Install an HVAC System with Ductwork?

Considering replacing your HVAC system? Don’t forget to check the condition of your ductwork, which typically has a similar lifespan. While installing a new HVAC system and ductwork at the same time is a significant investment, it helps ensure your home stays comfortable throughout the year.

HVAC.com provides a detailed breakdown of the costs involved in installing an HVAC system with ductwork, so you know exactly what to expect.

The Importance of Matched HVAC Systems

When upgrading your home’s heating and cooling system, it’s crucial to understand the concept of matched HVAC systems. A matched system refers to a heating and cooling setup where all components are designed to work together seamlessly.

Most people choose to replace their heating and cooling units at the same time, as this ensures the equipment is properly aligned for optimal energy efficiency and performance.

Average Costs for Installing an HVAC System with Ductwork

The average cost to install an HVAC system with ductwork varies widely based on factors including the unit’s size, brand, efficiency level, and ductwork requirements. Expect to pay the following for a central air conditioner paired with an 80%-efficiency gas furnace:

• 2-ton HVAC system: $8,000-$12,000, depending on the brand
• 3-ton HVAC system: $9,500-$13,500, depending on the brand
• 4-ton HVAC system: $11,500-$15,500, depending on the brand

These prices do not include the added cost of installing ductwork. New ductwork typically costs between $2,000 and $3,000 per ton of HVAC capacity, depending on where you live and the accessibility of the installation location. For example, for a 3-ton HVAC system, the cost of ductwork installation would be about $6,000 to $9,000.

Meanwhile, if you’re replacing a heat pump/air handler combo without a gas furnace, expect to pay $7,000 to $11,000 for a 2-ton unit, $9,000 to $13,000 for a 3-ton unit, and $10,000 to $14,000 for a 4-ton unit, depending on the brand. If you’re also installing new ductwork at the same time, plan on paying $2,000-$3,000 per ton of HVAC capacity.

Factors Influencing HVAC Installation Costs

1. Size of the HVAC System

As previously mentioned, the size of the HVAC system, measured in tons or BTUs (British Thermal Units), directly impacts the cost. Larger homes require more powerful systems, which are more expensive. A professional HVAC technician will conduct a load calculation to determine the appropriate size unit for your home.

2. Brand

Premium brands often come with higher price tags due to advanced technology and improved efficiency. A reputable brand may lead to better warranties, customer support, and system durability.

3. Ductwork

Aside from the system’s tonnage, other factors that can influence the cost of new ductwork include:

• Material: Ducts can be made from various materials, such as sheet metal, fiberglass, or flexible plastic.
• Labor: Installing ductwork is labor-intensive job, involving cutting, fitting, and sealing ducts throughout your home.
• The Home’s Layout: The complexity of your home’s layout can affect the ease of installation and, consequently, the cost.

4. Efficiency

High-efficiency systems cost more upfront but can save you money on energy bills in the long run. The SEER (Seasonal Energy Efficiency Ratio) rating determines how efficient an air conditioning system is. The minimum SEER2 ratings in the North and South are 13.4 and 14.3, respectively. Going up in SEER2 rating can add $1,500-$3,000 in pricing per step up, depending on the brand.

Meanwhile, increasing furnace efficiency from 80% to 90% or more would add about $800-$1,200 to the overall costs of buying a new HVAC system.

5. Additional Features

Additional features like programmable thermostats, zoning systems, and air purifiers can also add to the cost. Carefully weigh the pros and cons of adding these features to your HVAC replacement.