When you’re in the market for a new HVAC system—especially a 3–5 ton AC and gas furnace combo—one of the first questions on your mind is: “How much is this really going to cost me?” It’s a smart question, because the price can vary widely based on equipment, installation, climate, and home specifics.
In this guide, I’ll break down all the costs you should expect, from equipment and installation to permits, maintenance, and energy savings. Plus, I’ll share insider tips on how to maximize rebates and tax credits so you get the best deal possible.
By the end, you’ll have a clear understanding of what to budget and how to avoid costly surprises.
🏷️ Equipment Costs: What Does the System Itself Cost?
3–5 Ton AC Unit Price Range
The outdoor air conditioner condenser or heat pump is the heart of your cooling system. For 3–5 ton systems using the eco-friendly R-32 refrigerant, expect prices roughly between:
-
3 Ton: $3,200 – $4,800
-
4 Ton: $3,800 – $5,500
-
5 Ton: $4,500 – $6,200
Higher-end models with variable-speed compressors and enhanced coil protection typically cost more but deliver better efficiency and quieter operation.
Gas Furnace Costs
The furnace cost depends on its size, efficiency, and brand reputation:
-
Mid-efficiency 80–90% AFUE furnace: $1,500 – $3,000
-
High-efficiency 95–98% AFUE furnace: $2,500 – $4,500
Many homeowners in cooler climates opt for the 95%+ AFUE models for energy savings and rebate eligibility.
Matched Air Handler and Coil
Indoor components that connect the furnace and AC also add cost:
-
Air Handler: $1,200 – $2,000
-
Evaporator Coil: $800 – $1,500
Choosing matched components from the same manufacturer ensures optimal performance and warranty coverage.
🛠️ Installation Costs: Labor, Materials, and More
Installation can be the biggest variable in your total price. Factors include:
-
Ductwork modifications or replacement
-
Electrical upgrades
-
Gas line installation or relocation
-
Permitting and inspections
Typical Installation Labor Costs
-
Basic install (no ductwork changes): $1,500 – $3,000
-
Moderate install (minor ductwork & electrical): $3,000 – $5,000
-
Complex install (major ductwork, permits): $5,000 – $8,000+
Your geographic location also affects labor costs, with urban areas and regions with a high cost of living typically on the higher end.
For a detailed local cost estimate, the HomeAdvisor HVAC Installation Cost Guide is a reliable resource.
💸 Permits, Inspections, and Miscellaneous Fees
Don’t forget that most local governments require permits and inspections for new HVAC installs or replacements.
-
Permit fees: $100 – $500, depending on municipality
-
Inspection fees: Often included with permits or $50 – $150 separately
These fees ensure the work meets safety codes and prevents problems down the line.
🔄 Maintenance and Operating Costs Over Time
Your HVAC system isn’t a one-time cost. Expect ongoing:
-
Annual maintenance: $150 – $300 (recommended twice a year)
-
Filter replacements: $100 – $200 annually
-
Energy bills: Highly variable based on system efficiency and climate
The average homeowner can save hundreds annually on energy bills by upgrading from a 10 SEER/80 AFUE system to a modern 15+ SEER2 and 95%+ AFUE combo. The U.S. Department of Energy’s Energy Saver guide offers detailed cost-saving tips.
💵 Rebates, Tax Credits, and Incentives to Lower Costs
Federal Tax Credits
Under the Inflation Reduction Act, you can claim up to 30% of your HVAC system's total installed cost, capped at $600 per component (e.g., $600 for AC and $600 for furnace). This tax credit makes upgrading much more affordable.
Utility Company Rebates
Many utilities offer rebates ranging from $200 to $1,500 for high-efficiency AC and furnace installations. Check your local utility’s website or the Database of State Incentives for Renewables & Efficiency (DSIRE) for programs in your area.
Manufacturer Promotions and Financing
Some manufacturers and dealers offer seasonal promotions, rebates, or zero-interest financing plans that can significantly reduce out-of-pocket expenses.
⚖️ What Should You Expect for Total Costs?
| Cost Category | Estimated Range | Notes |
|---|---|---|
| Equipment (AC + Furnace + Coil) | $6,000 – $10,500 | Depends on size & efficiency |
| Installation Labor | $1,500 – $8,000 | Varies by complexity & location |
| Permits & Inspections | $100 – $650 | Local government requirements |
| Maintenance (Annual) | $150 – $300 | Twice yearly tune-ups |
| Total Upfront Cost | $7,600 – $19,150 | Before rebates |
🔍 Tips to Get the Best Value
-
Always get multiple quotes from licensed contractors. Verify credentials and ask for references.
-
Don’t just buy the cheapest equipment. Balance cost with efficiency and warranty terms.
-
Check for rebates before purchase. Some require pre-approval or specific equipment models.
-
Ask about bundled financing offers. Some manufacturers and dealers provide attractive payment plans.
-
Consider lifetime operating costs, not just upfront. Efficient systems save thousands over time.
For more detailed buying advice, see the Consumer Reports HVAC Buying Guide.
✅ Final Thoughts from Savvy Mavi
The price of a 3–5 ton AC and gas furnace system can seem intimidating, but breaking down the numbers shows you how to budget smartly and plan for the long haul.
Invest in quality equipment with proven energy efficiency, work with qualified installers, and always hunt for rebates and tax credits to offset your investment. By doing this, you’ll maximize your comfort and minimize your total cost of ownership.
Ready to shop? Browse top-rated, matched 3–5 ton R-32 air conditioner and gas furnace combos at The Furnace Outlet and make a choice you’ll feel good about for years to come.
