How Much Does a New HVAC System Cost in Frisco & Little Elm?
A complete HVAC system replacement in Frisco, Little Elm and the greater Dallas–Fort Worth area typically costs $8,000–$16,000 installed in 2026. Most homeowners replacing a standard system with existing ductwork should budget around $9,000–$13,000, depending on the equipment and installation.
2026 HVAC Replacement Costs by System Type
| System | Estimated installed cost |
|---|---|
| AC system onlyOutdoor condenser and indoor evaporator coil | $7,000–$13,500 |
| Furnace replacement onlyNew furnace with standard installation | $3,500–$7,500 |
| Complete HVAC systemAC, furnace or air handler, and installation | $8,000–$16,000 |
| Premium high-efficiency systemVariable-speed equipment and advanced comfort features | $13,000–$20,000+ |
Estimated installed prices. Actual costs depend on equipment size, brand, labor and existing system conditions.
AC Replacement Cost by System Size
For a standard-efficiency central AC system with existing ductwork, these are approximate 2026 installation prices in the DFW area. Not sure what size your home needs? Our AC installation team sizes every system before quoting.
| System size | Typical installed cost |
|---|---|
| 2 ton | $6,500–$10,500 |
| 2.5 ton | $7,000–$11,000 |
| 3 ton | $7,500–$12,000 |
| 3.5 ton | $8,000–$13,000 |
| 4 ton | $9,000–$14,000 |
| 5 ton | $10,000–$16,000+ |
A high-efficiency system can cost several thousand dollars more than a standard model.
Additional Work That Can Increase the Price
Some homes need extra work to get a new system installed correctly. These are potential additional charges, not costs every installation will require.
| Additional work | Estimated cost |
|---|---|
| Full ductwork replacement | $1,500–$6,000 |
| Duct repairs or modifications | $500–$3,000 |
| Electrical upgrades | $500–$2,000 |
| Permits and inspections | $75–$500 |
Ductwork problems are one of the biggest swings in total cost. Learn more about our air duct repair and replacement services.
What Affects Your HVAC Replacement Cost?
Equipment Size
Larger homes need higher-tonnage systems, which cost more to buy and install.
Brand & Efficiency
Premium, variable-speed and high-efficiency equipment can add several thousand dollars over a standard model.
Your Existing System
The condition of your ductwork, electrical and current setup, plus labor and permits, all affect the final price.
Ways to Lower Your Cost
Check our current specials for offers on new system installations, and see our financing options to spread the cost into manageable payments. Replacing both units at once? Read whether to replace your AC and furnace together.
HVAC Replacement Cost FAQs
How much does it cost to replace an HVAC system in Frisco, TX?
A complete HVAC system replacement in Frisco and the greater DFW area typically costs $8,000–$16,000 installed in 2026. Most homeowners replacing a standard system with existing ductwork should budget around $9,000–$13,000.
How much does a new AC unit cost in Little Elm, TX?
Replacing an AC system only, meaning the outdoor condenser and indoor evaporator coil, typically costs $7,000–$13,500 installed. A premium high-efficiency system can run $13,000–$20,000 or more.
How much does a 3-ton AC system cost to install?
A standard-efficiency 3-ton central AC system with existing ductwork typically costs $7,500–$12,000 installed in the DFW area. A 4-ton system runs about $9,000–$14,000, and a 5-ton system about $10,000–$16,000 or more.
How much does furnace replacement cost?
Replacing a furnace only, with standard installation, typically costs $3,500–$7,500 in North Texas.
Do I need new ductwork when I replace my HVAC system?
Not always. If your existing ducts are in good shape, they can usually be reused. Duct repairs or modifications typically cost $500–$3,000, and full ductwork replacement typically costs $1,500–$6,000.
Do I need a permit to replace my HVAC system?
Permits and inspections are a potential added cost, typically $75–$500, depending on the job.
How much more does a high-efficiency HVAC system cost?
A high-efficiency system can cost several thousand dollars more than a standard model. Premium high-efficiency systems with variable-speed equipment typically cost $13,000–$20,000 or more installed.
Get an Exact Price for Your Home
Every home is different. Air Zone Experts will look at your home, your current system and your ductwork, then give you a clear, upfront quote for Frisco, Little Elm and surrounding North Texas communities.