🧾 New Furnace, New Bills — Let’s Make Sense of the Install Costs
You’ve done your homework and picked a smart, efficient unit like the Goodman GR9S920603BN. Great choice! 🎉
Now comes the not-so-fun part: installation costs. And let me tell you — this is where things get real murky, real fast if you don’t know what to expect.
But don’t worry — I’ve been through it, I’ve researched it, and I’ve got you. Let’s go line by line through what’s worth paying for, what’s optional, and what to flag as a red flag.
📊 What’s the Average Cost of Installing a Gas Furnace?
Across the U.S., here’s what a typical furnace install runs:
| Installation Type | National Average | Budget Range |
|---|---|---|
| Basic Replacement Install | $2,000–$3,500 | $1,500–$5,000 |
| New Furnace + New Ducts | $5,000–$7,500 | $4,000–$10,000+ |
| High-Efficiency Upgrades | Add $500–$1,200 | Varies by model |
(Source: EnergySage, HomeAdvisor)
The good news? Since the Goodman GR9S920603BN is compact and built for upflow or horizontal installs, your labor costs can stay on the low end — as long as your ductwork and gas line are already in place.
✅ What You Should Pay For
Here’s what’s essential — don’t skip these, even if they add to the upfront quote:
✔️ Professional Load Sizing
Before anyone installs anything, a real HVAC pro should run a Manual J load calculation (not just eyeball your square footage). This ensures your furnace is sized just right for your home.
✔️ Proper Venting
This 92% AFUE furnace requires PVC venting, not a traditional metal flue. Make sure the install includes proper exhaust routing and intake air piping.
✔️ Gas Line Inspection + Permit
Gas work is no joke. Your installer should pull the correct permit, pressure-test the line, and follow code. If they skip this step? 🚩 Walk away.
✔️ New Thermostat Wiring (if needed)
High-efficiency furnaces often require C-wire or additional control wires. Don’t assume your old thermostat is compatible — double-check.
✔️ Code Upgrades
If your local building codes have changed (which they often do), budget a little extra for electrical grounding, smoke detectors, or updated shut-off valves.
❌ What You Can Skip (or Negotiate)
Some installers try to sneak in extras you may not need. Here’s where you can push back:
❌ Expensive Air Purifiers or Ionizers
Unless your doctor specifically recommends it, you probably don’t need a $1,200 “whole-home purifier” tacked onto your install.
❌ Extended Warranties from the Installer
The Goodman GR9S920603BN already comes with a strong manufacturer warranty. Unless the installer is offering a labor warranty, don’t overpay for duplicate coverage.
❌ “Maintenance Packages” That Don’t Deliver
Annual service is important — but read the fine print. Some “plans” are just glorified filter changes. Know what you’re paying for.
🧠 Pro Tip: Ask for a Line-Item Quote
Before you sign anything, request a detailed estimate that lists out each component of the job:
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Furnace cost
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Labor
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Ductwork changes (if any)
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Venting
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Gas connections
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Thermostat or wiring
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Permits
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Cleanup/disposal
Not only does this give you full transparency — it also makes it easier to compare quotes from different contractors.
💬 Real Talk: The Value of a Good Installer
Here’s what I always say: A cheap install with a bad installer is more expensive in the long run. Why?
Because bad installs =
❌ Poor airflow
❌ Noisy operation
❌ Inefficient performance
❌ More repairs down the road
When you’re dealing with gas, combustion, and electrical — invest in someone who knows what they’re doing. Look for:
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Proper HVAC license and insurance
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Verified Google or Yelp reviews
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Willingness to pull permits
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Transparent quoting process
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Brands they specialize in (yes, Goodman-trained installers matter!)
💙 Savvy Mavi’s Budget Tips
💡 Shop your own furnace first. Buying a model like the Goodman GR9S920603BN online can save you hundreds before the install even starts.
💡 Bundle and save. If you’re also replacing your AC or thermostat, ask about a package deal.
💡 Look for rebates. Use DSIRE to find local and state energy rebates — they’re often available for 90%+ AFUE systems.
💡 Get 2–3 quotes. Seriously — you’ll be shocked at the price differences for the same job.
🏁 Final Thoughts: Install It Right, Then Sleep Tight
Buying a great furnace is step one. Installing it right is step two — and it matters just as much.
Don’t get dazzled by lowball quotes or pushed into pricey extras. With a little prep, a solid checklist, and a good contractor, you can enjoy cozy, efficient heat without overpaying.
Questions? Drop them below — I’m always here to help you heat smarter, save more, and stay Savvy. 💙
In the next topic we will read about: What Is AFUE and Why Should You Care When Buying a Furnace?
