How Much Does It Cost to Replace an HVAC System in Kentucky?

If you’re a homeowner in Kentucky wondering how much it costs to replace your HVAC system, you’re not alone. Whether your unit has broken down or you’re looking to upgrade to a more energy-efficient system, understanding the cost factors can help you plan your budget wisely.
At ComfortMaster Heating & Air, we’ve helped thousands of homeowners in Nicholasville and surrounding areas make informed HVAC upgrade decisions. Here’s a complete breakdown of what you can expect when replacing your heating and cooling system in the Bluegrass State.
Average HVAC Replacement Cost in Kentucky
Replacing an HVAC system in Kentucky generally costs between $7,000 and $12,000. This includes:
- New furnace or air handler
- Central AC or heat pump
- Thermostat
- Installation labor
- Basic ductwork modifications (if needed)
- Permit fees and disposal of old equipment
If you’re only replacing one component (like just the AC or just the furnace), you may spend closer to $4,000–$6,000.
Factors That Affect HVAC Replacement Cost
- System Size (Tonnage or BTUs)
Larger homes require larger HVAC units to heat or cool the space efficiently. A 2-ton system for a smaller home costs less than a 5-ton unit for a 3,000+ sq ft home.
- Efficiency Ratings (SEER & AFUE)
- SEER (for ACs) and AFUE (for furnaces) determine how efficient your system is.
- Higher-efficiency units (like 18–20 SEER) cost more upfront but save money long-term.
- System Type
- Split Systems: Most common; separate furnace and AC.
- Heat Pumps: Great for mild climates and can both heat and cool.
- Ductless Mini-Splits: Best for homes without ducts or for room additions.
- Ductwork Condition
Old, leaky, or uninsulated ductwork can drive up costs if it needs repair or full replacement during installation.
- Brand & Warranty
Popular brands like Carrier, Lennox, Trane, and Rheem have different price points and warranty terms.
- Installation Complexity
Factors like crawlspace access, attic installations, multi-story homes, or zoning can increase labor hours and cost.
Signs It’s Time to Replace Your HVAC System
Not sure if you need a full replacement yet? Here are signs to watch for:
- Your system is over 12–15 years old
- Frequent breakdowns or service calls
- Increasing energy bills
- Inconsistent temperature or airflow
- Loud noises or odd smells
- You’re planning major home renovations or adding square footage
If you’re dealing with more than one of the above, it may be more cost-effective to replace than repair.
Can I Save Money on HVAC Replacement?
Absolutely! Here’s how:
- ComfortMaster Exclusive Promotions
We often run seasonal discounts on system replacements. Ask about current offers when you call!
- Federal Tax Credits
As of 2025, the Inflation Reduction Act still includes up to $2,000 in energy-efficiency tax credits for qualifying HVAC systems.
- Utility Rebates
Local utility companies (like KU and LG&E) offer rebates on ENERGY STAR® HVAC upgrades. We’ll help you apply.
- Financing Options
We offer flexible financing to make your HVAC replacement affordable with low monthly payments.
What’s Included in a ComfortMaster HVAC Replacement?
When you choose ComfortMaster Heating & Air in Nicholasville, KY, we include:
- Full system assessment and load calculation
- Expert recommendations based on your home’s needs
- Transparent pricing and written estimates
- Removal of old equipment
- Professional installation and system testing
- Thermostat setup and education
- Manufacturer and labor warranties
- Optional maintenance plan enrollment
We’re with you every step of the way — no pushy sales, just honest HVAC advice.
People Also Ask (Voice-Search Optimized FAQ)
“How long does it take to install a new HVAC system?”
Most standard HVAC installations in Kentucky take one full day, though complex systems may take two.
“Is it cheaper to replace furnace and AC at the same time?”
Yes. Replacing both units together can save 10–20% on total cost and ensure system compatibility.
“Should I repair or replace my HVAC system?”
If your unit is over 12 years old and repair costs exceed 50% of a new system, replacement is usually smarter long-term.
“Will a new HVAC system lower my energy bills?”
Yes. New high-efficiency systems can reduce your monthly bills by up to 30%.
Get Your Free HVAC Replacement Estimate Today
At ComfortMaster Heating & Air, we provide honest, affordable, and expert HVAC replacements tailored to your home and budget.
Visit Us: 51 Wichita Drive, Nicholasville, KY 40356
Call Now: (859) 255-0728
Request a Free Estimate Online
Final Thought
Your HVAC system is one of the most important investments in your home. Don’t wait until it fails — contact us today to explore your replacement options with a team you can trust.