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How to Improve Energy Efficiency with New Windows: Maryland Homeowner's Guide
17 min readBy Ben Pascal

How to Improve Energy Efficiency with New Windows: Maryland Homeowner's Guide

Introduction: Why Energy-Efficient Windows Matter in Maryland

Windows are a major source of energy loss in homes across Anne Arundel County. If your home feels drafty, your energy bills are high, or you struggle to keep rooms comfortable year-round, your windows may be to blame. Upgrading to energy-efficient windows is one of the smartest investments you can make for comfort, savings, and sustainability.

At Great Oak Roofing, we help Maryland homeowners choose and install the best windows for their needs and budget. This guide covers how new windows improve energy efficiency, what features to look for, and how to maximize your investment.

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Signs Your Windows Are Wasting Energy

  • Drafts or cold spots near windows
  • Condensation or fogging between panes
  • Difficulty opening or closing windows
  • Faded furniture or flooring near windows
  • High heating and cooling bills
  • Single-pane or outdated windows

If you notice any of these, it's time to consider an upgrade.

Learn more in our guide on When to Replace Old Windows: Energy Efficiency Clues to Watch For.


How New Windows Improve Energy Efficiency

1. Double or Triple Glazing

  • Multiple panes of glass with insulating gas reduce heat transfer
  • Keeps your home warmer in winter and cooler in summer

2. Low-E Glass Coatings

  • Reflects infrared and UV rays
  • Reduces heat gain in summer and heat loss in winter

3. Argon or Krypton Gas Fills

  • Inert gases between panes provide better insulation than air

4. Quality Window Frames

  • Vinyl, fiberglass, and composite frames offer superior insulation
  • Wood frames are also efficient but require more maintenance

5. Professional Installation

  • Proper sealing and insulation prevent air leaks
  • Ensures windows perform as designed

For tips on keeping your new windows efficient, see our Window Maintenance Tips.

Learn about our Window Installation Process.


Energy Star and Window Ratings

  • ENERGY STAR® certified windows meet strict efficiency standards
  • Look for low U-factor (insulation) and low Solar Heat Gain Coefficient (SHGC)
  • NFRC labels provide detailed performance ratings

Local Climate Considerations

Anne Arundel County's climate means your windows must handle:

  • Hot, humid summers
  • Cold, wet winters
  • Occasional storms and high winds

Result: Energy-efficient windows help maintain comfort and reduce HVAC strain year-round.


Cost vs. Savings: Are New Windows Worth It?

  • Upfront cost: $600–$1,200 per window installed (varies by size and features)
  • Energy savings: Up to 30% reduction in heating and cooling costs
  • ROI: New windows can recoup 70–80% of their cost at resale
  • Comfort: Fewer drafts, quieter rooms, and less fading of interiors

If your siding is also looking tired, see our guide: Should You Paint or Replace Old Siding?.

Tip: For a precise quote, request a free estimate from Great Oak Roofing.


FAQs: Energy-Efficient Windows in Maryland

How do I know if my windows need replacing?

Look for drafts, condensation, or difficulty operating. High energy bills are another clue.

What window material is best for energy efficiency?

Vinyl, fiberglass, and composite frames are top choices for Maryland's climate.

Can I replace windows in winter?

Yes, but spring and fall are ideal for installation in Maryland.

Are there rebates or incentives for new windows?

Check local and federal programs for possible energy efficiency incentives.

See our Window Maintenance Tips.


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Conclusion: Make Your Home More Efficient with New Windows

Upgrading your windows is one of the best ways to improve comfort, lower bills, and boost your home's value in Anne Arundel County. At Great Oak Roofing, we help homeowners in Severna Park, Annapolis, Bowie, Arnold, Glen Burnie, Crofton, Davidsonville, Edgewater, Severn, and Crownsville choose and install the perfect windows for their needs.

Ready to save energy and stay comfortable? Contact us today for a free window consultation and estimate!

For more on siding options that can further improve your home's efficiency, check out Vinyl vs. Fiber Cement Siding.

📍 Serving: Severna Park, Annapolis, Bowie, Arnold, Glen Burnie, Crofton, Davidsonville, Edgewater, Severn, and Crownsville

📞 Contact us today at (410) 378-7663 for a free consultation and estimate!

Need Professional Help?

Our experts are ready to assist you with your home improvement needs.

Call us: 410-378-7663