When I first started shopping for a new HVAC system, I’ll admit it—I got sticker shock. One contractor gave me a $9,000 quote. Another? $14,000. Both for a Goodman 4 Ton 13.5 SEER2 air conditioner and a 100,000 BTU 80% AFUE gas furnace.
That’s a huge difference for the same system size.
If you’ve been in this boat too, you know how confusing HVAC pricing can be. In this guide, I’ll break down the real-world costs of a Goodman 4 ton / 100k BTU system in 2025—so you can budget without surprises.
📏 Why HVAC Costs Are So Hard to Pin Down
Unlike buying a fridge or washing machine, HVAC systems don’t come with a single price tag. Here’s why:
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Regional labor costs → A furnace install in New Jersey costs more than one in rural Ohio.
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Installation complexity → Attic installs, multi-story ductwork, or electrical panel upgrades drive costs up.
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Equipment quality and options → Even within Goodman, pricing varies depending on single-stage vs. two-stage blowers, coil type, and thermostat options.
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Permits & inspections → Every town and state has its own code requirements.
📌 According to HomeAdvisor, the national average cost to replace a full HVAC system in 2025 ranges from $7,500 to $15,000
So where does the Goodman 4 ton / 100k BTU combo land? Let’s break it down.
🛠️ Equipment Costs in 2025
One of the reasons homeowners love Goodman is that their equipment pricing is competitive.
Here’s what you can expect for the major components (retail prices, not installed):
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Goodman 4 Ton 13.5 SEER2 Condenser (GLXS3BN4810) → $2,200–$2,800
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Goodman 100,000 BTU 80% AFUE Gas Furnace (GR9S801005CN) → $2,000–$2,600
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Vertical Cased Coil (CAPTA6030C3) → $600–$900
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Thermostat (programmable or smart) → $200–$400
👉 Total equipment package: $5,000–$6,700
📌 Source: AC Wholesalers Pricing Guide
👷 Labor & Installation Costs
Labor is often more than the equipment itself.
In the Northeast, installation typically includes:
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Setting the condenser outside with proper pad/clearance
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Connecting refrigerant lines & charging system
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Gas line hookup for furnace
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Venting (chimney liner or PVC flue)
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Electrical work for AC + furnace
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Duct connection and sealing
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Old system removal/disposal
Typical Northeast labor costs in 2025: $3,500–$5,500
📌 Source: HVAC Installation Cost Guide
📜 Permits, Inspections & Codes
A step many homeowners overlook is local permitting.
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Town permits: $150–$500
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Gas inspections: $75–$200
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State energy compliance: required in some Northeast states
If you skip this step, you risk failed inspections or voided insurance coverage.
🪛 Hidden or Extra Costs
Here’s where quotes can balloon:
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Ductwork repairs/replacement → $1,500–$4,000 (especially in older homes).
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Electrical upgrades → $500–$2,000 if your panel isn’t sufficient.
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Smart thermostat add-ons → $200–$400.
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High-efficiency filter cabinets or humidifiers → $400–$1,000.
📌 According to HVAC.com, ductwork upgrades can add 20–30% to project costs
⚖️ DIY vs. Pro Install
Goodman has a reputation as being one of the more DIY-friendly brands because you can buy equipment online.
But here’s the reality:
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Installing a gas furnace requires licensed pros (for safety and code).
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DIY AC installs risk warranty voids.
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Most towns won’t pass inspection without a licensed contractor’s signature.
👉 DIY may save $3,000–$5,000, but it’s best for experienced HVAC pros who happen to be homeowners. For most of us, professional install is the way to go.
📊 Real-World Cost Ranges (Northeast, 2025)
Based on actual Goodman installs in the Northeast:
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Basic Replacement (straight swap, no extras)
$8,500–$10,500 -
Mid-Range Install (duct or electrical updates)
$11,000–$13,500 -
High-End (new ductwork, zoning, smart controls)
$14,000–$17,000+
📌 Source: Modernize HVAC Cost Report
🌎 Rebates, Incentives & Financing
Here’s the catch:
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The 13.5 SEER2 Goodman system doesn’t qualify for federal Energy Star rebates (those require 15.2 SEER2 or higher)【Energy Star†L3-L6】.
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Some local utility rebates may apply (typically $200–$500 for system replacements).
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IRA Tax Credit (25C) → up to $600 for qualifying AC units, but again, only for Energy Star.
Financing options:
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0% promotional financing (12–24 months).
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Long-term HVAC loans ($150–$300/month depending on project cost).
📌 Source: IRS Energy Efficient Home Improvement Credit
📝 Samantha’s Budgeting Tips
When I finally replaced my old system, here’s what helped me keep costs under control:
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Get at least 3 quotes. My lowest and highest quotes were nearly $5,000 apart.
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Ask for a line-item breakdown. This prevents hidden markups.
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Don’t forget maintenance. Budget $200–$400/year for tune-ups and filter changes.
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Consider total cost of ownership. A 13.5 SEER2 system is cheaper upfront, but a 15.2 SEER2 may save more long-term.
✅ Samantha’s Takeaway
If you’re a Northeast homeowner considering a Goodman 4 Ton AC + 100k BTU furnace, here’s the reality in 2025:
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Expect to pay $8,500–$13,500 for most installs.
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Budget extra for ductwork or electrical updates.
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Rebates are limited unless you jump to 15.2 SEER2 or higher.
For my family’s 2,400 sq. ft. home, this system struck the right balance: affordable upfront, reliable in cold winters, and efficient enough for our humid summers.
Bottom line: With clear budgeting, this Goodman combo is one of the best-value HVAC packages for Northeast homeowners.
In the next topic we will know more about: What Samantha Learned Installing a Goodman 4 Ton Northeast System
