NON-IMPACT VS IMAPCT WINDOWS

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If you already have code‑approved storm shutters and you’re deciding whether to replace old, inefficient windows/doors with non‑impact low‑E units (instead of impact), the ROI question breaks into:

• Energy savings
• Cost difference vs impact
• Insurance and resale impact
• Practical hassle/safety

Here’s how it usually works out in Southwest Florida.

Your current setup (25–40‑year‑old single‑pane or early double‑pane) is likely very inefficient.

Replacing with new non‑impact low‑E windows and sliders will typically:

• Cut cooling costs about 15–30% vs. old clear single‑pane.
• If your electric bill is $200–$300/month and ~50–60% is A/C:
  • Annual cooling cost maybe $1,200–$1,800.
  • Likely saving around $200–$400/year on electricity.

Those savings are almost the same whether the window is impact or non‑impact, as long as:

• Glass package (double‑pane, low‑E, argon, etc.) is similar
• Frame type/quality is similar

So from an energy standpoint, non‑impact low‑E windows give you almost all the efficiency ROI of impact windows, at lower cost.

Typical installed price in SW FL (very rough ballpark):

• Non‑impact, low‑E: baseline
• Impact, low‑E: usually 30–70% more for the same opening

Example:

• Non‑impact project: $10,000
• Impact project: $15,000–$17,000 for similar sizes/layout

Because the energy savings are similar, that extra $5k–$7k for impact is mostly buying:

• Built‑in hurricane protection
• Security
• Noise reduction (often a little better with laminated impact glass)

If you intend to keep using shutters and don’t mind deploying them, that extra cost may not “pay back” financially.

Florida insurers care about:

• Are all openings protected (shutters or impact)?
• Do you have a favorable wind mitigation inspection?

If:

• Your shutters are approved / code‑rated, and
• They cover all openings (including doors and sliders),

then switching to new NON‑impact low‑E windows normally:

• Keeps your wind mitigation credits (no loss of hurricane discount)
• Doesn’t add a major new discount, since you already have full opening protection

In other words, insurance savings should be about the same with:

• Shutters + non‑impact windows, versus
• No shutters + impact windows

So from an insurance‑ROI standpoint:
If your shutters are good and you’re using them, non‑impact windows are usually fine and more cost‑effective.

Listings in SW FL market really well when they say:

• “Hurricane impact windows & doors”
  OR
• “Full hurricane protection with shutters”

Modern buyers typically value impact windows more because:

• No need to put shutters up
• Better day‑to‑day convenience
• Perceived higher safety

But from an appraisal and hard dollars standpoint:

• Both “impact” and “full shutters” are counted as hurricane protection.
• New, nice‑looking low‑E windows (even non‑impact) are a big plus compared to your old single‑pane units.
• The premium that buyers will pay just for impact vs non‑impact (when shutters exist) is real, but often smaller than the extra cost of the impact windows.

If you’re planning to sell soon (3–7 years), new non‑impact low‑E windows plus existing shutters is usually:

• A good ROI improvement over your current condition.
• Cheaper than going full impact everywhere, while still showing well in photos and inspection reports.

Where impact windows win – but not strictly ROI:

• You’re older or can’t safely install shutters yourself.
• You travel a lot and want passive, always‑on protection.
• You hate the hassle of putting shutters up every time.
• You want better security (harder to break through laminated impact glass).

If those are big issues for you, paying extra for impact may be worth it even if pure financial ROI is weaker.

With 25–40‑year‑old inefficient windows and sliding glass doors and existing shutters in Southwest Florida:

• Yes, buying non‑impact low‑E windows can be a very good ROI move:
  
  • You capture most of the energy savings.
  • You keep your wind mitigation/insurance discounts as long as shutters stay and cover all openings.
  • You significantly improve comfort and appearance.
  • You spend much less upfront than impact, so payback is better.
• Consider impact windows instead if:
  
  • Price difference is modest (say ≤20–25% more), and
  • You dislike shutter deployment, or
  • You plan to stay long‑term and want maximum convenience & protection.