Full HVAC Replacement Cost Calculator: Free Estimate Your Heating & Cooling Upgrade
How to Calculate Full HVAC Replacement Cost By Use This Calculator Step by Step Guide
This tool is designed for homeowners to estimate complex HVAC projects with ease. Follow these steps for a custom quote:
Step 1: Choose Your System Type
Select from the dropdown:
- AC + Furnace
- Heat Pump + Air Handler
- Dual Fuel (gas + electric combo)
Your selection determines the equipment and labor scope.
Step 2: Enter Home Square Footage
This scales the capacity of both AC and furnace, affecting:
- Tonnage
- BTUs
- Ducting size
Step 3: Input Equipment Cost
Use:
- A contractor quote
- Average values provided (e.g., $9,500 for standard AC + furnace)
Step 4: Add Labor Rate and Total Hours
Customize labor rate per hour and expected installation time:
- Average: 20–25 hours
- Default rate: $100/hr
This calculates your labor portion of the estimate.
Step 5: Toggle Ductwork Replacement
Check if needed and input an estimate. If your ducts are in good shape, you can skip this.
Step 6: Input Permit Fees
Look up your city’s HVAC permit fee or use $400 as a starting estimate.
Step 7: Select Add-On Features
Pick upgrades such as:
- Smart thermostat
- Zoning system
- Whole-home air filtration
These are automatically added to your total.
Step 8: Include Disposal and Contingency
Use the default $250 for old system disposal and 7% contingency to cushion unexpected changes.
Step 9: Click “Calculate Estimate”
The calculator generates:
- Equipment Cost
- Labor Estimate
- Ductwork and Permit Fees
- Add-On Totals
- Final Cost Range (Low to High)
Step 10: Export Estimate as PDF
Use the Export to PDF button to save your estimate for:
- Contractor bidding
- Financing applications
- Home improvement planning
Full HVAC Replacement Cost Calculator
Main Cost Factors in the Full HVAC Replacement Calculator
The calculator breaks down every key element of a full HVAC replacement—covering both air conditioning and heating systems. Here’s what it includes:
1. System Type Selection
You can select your desired system combination:
- AC + Gas Furnace (standard setup)
- Heat Pump + Air Handler (all-electric)
- Dual-Fuel System (heat pump + furnace)
Each system type affects overall equipment cost and labor intensity. The calculator adapts estimates accordingly.
2. Home Size (Square Footage)
Your home’s size determines:
- AC unit tonnage (e.g., 2–5 tons)
- Furnace BTU requirements (e.g., 60,000–100,000 BTUs)
- Duct sizing and material needs
The calculator uses this input to auto-adjust equipment capacity and installation scope.
3. Equipment Costs
Input or choose average prices based on system type:
- Standard AC & Furnace: $6,000–$10,000
- Heat Pump Systems: $8,000–$12,000
- High-efficiency Dual Fuel: $10,000–$14,000
You can use actual quotes or adjust based on brand and SEER rating.
4. Labor Rate and Total Hours
HVAC replacement typically takes 16 to 30 hours, depending on:
- Crawlspace or attic access
- Duct modifications
- Electrical and gas line work
Labor rates range from $85–$150/hr (customizable). The calculator multiplies total hours × hourly rate.
5. Ductwork Replacement or Upgrades
Many older homes need partial or full ductwork updates:
- Minor repairs: $500–$1,500
- Full replacement: $2,000–$5,000
Toggle this cost in the calculator to see total project impact.
6. Permit & Inspection Fees
Most jurisdictions require HVAC permits, which can range from $200 to $700, depending on your location.
- Includes mechanical, electrical, and gas inspections (if applicable)
- Editable input field in the calculator
7. Add-On Options
Consider these optional upgrades:
- Smart Thermostat Installation (+$250)
- Zoning Control System (+$800)
- Air Purification or UV System (+$600)
Each is selectable in the calculator and updates the total cost dynamically.
8. Disposal and Contingency
- Old system disposal: $250 (standard)
7% contingency added to cover change orders, access issues, or code upgrades
9.Need to Replace Your HVAC System?
If you’re preparing for an HVAC replacement, it’s important to understand all the factors that contribute to the total project cost. Whether you’re upgrading from an older air conditioning system or switching to a more energy-efficient model, our AC Installation Cost Calculator provides a clear breakdown of the expected expenses.
Why Use a Full HVAC Replacement Cost Estimator?
Replacing both your heating and cooling system can be overwhelming. Our calculator helps you:
- Avoid underestimating total cost
- Compare quotes with confidence
- Customize for your home’s size, location, and system needs
With the Full HVAC Replacement Cost Calculator, you’re equipped to plan, budget, and schedule your project without surprises.
Try it today to take control of your home’s comfort and energy efficiency.