What Are IGUs (Insulated Glass Units) and How Do They Improve Energy Efficiency?

A Key Component in Modern Commercial Glazing Across California and Arizona

When energy efficiency is a top priority for your commercial project, the type of glass you specify matters. One of the most common and effective choices in commercial construction today is the IGU, or Insulated Glass Unit.

At Ramos Industries, Inc., we frequently install IGUs in offices, schools, retail centers, and public buildings throughout California and Arizona to help clients meet energy codes, reduce HVAC loads, and create more comfortable spaces.

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What Is an IGU?

An Insulated Glass Unit (IGU) is made up of two or more panes of glass separated by a sealed air space. This space is often filled with air or inert gas (like argon or krypton) to improve insulation. The entire unit is hermetically sealed to prevent moisture or gas leakage.

IGUs are used in everything from vision glass and storefronts to curtain walls and skylights in commercial applications.

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How IGUs Improve Energy Efficiency

1. Reduced Heat Transfer

• The sealed space between panes significantly lowers thermal conductivity
  
  
• Helps maintain stable indoor temperatures, reducing the workload on HVAC systems
  
  

2. Solar Control with Low-E Coatings

• Many IGUs include Low-E (low emissivity) coatings on one or more panes
  
  
• Reflects infrared radiation while allowing natural light to pass through
  
  

3. Minimized Air Infiltration and Condensation

• A properly sealed IGU prevents air leaks and moisture intrusion
  
  
• Reduces condensation buildup on the interior side of the glass, preserving finishes and improving comfort
  
  

4. Year-Round Performance

• In hot climates like Phoenix or Palm Springs, IGUs help block external heat gain
  
  

In cooler or coastal regions, they keep interior warmth from escaping

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Benefits of Using IGUs in Commercial Construction

✓ Energy Code Compliance

• Supports projects that must meet Title 24 in California, IECC standards, or other local codes
  
  
• Often required in LEED, WELL, or Net Zero projects
  
  

✓ Tenant Comfort and Productivity

• Reduced glare and better thermal control lead to more comfortable interior environments
  
  
• Especially beneficial in open office spaces, schools, and healthcare centers
  
  

✓ Long-Term Cost Savings

• Lower utility bills and reduced strain on mechanical systems
  
  
• Less need for interior climate control in zones with high glass exposure
  
  

✓ Acoustic Insulation

IGUs also help reduce external noise, making them ideal for buildings near busy roads or urban centers

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Where IGUs Are Most Effective

We regularly specify IGUs for:

• Office buildings with full-height glazing
  
  
• Retail storefronts in high-traffic areas
  
  
• Public sector buildings requiring high performance and durability
  
  
• Interior applications where noise or climate control is a concern
  
  

IGUs can also be paired with laminated glass, reflective coatings, or decorative interlayers for added functionality and design appeal.

What to Consider Before Specifying IGUs

• Spacer type (aluminum, stainless steel, or warm edge) impacts thermal performance
  
  
• Gas fill and coating selections should align with building orientation and regional climate
  
  
• Edge seal quality and installation affect long-term durability
  
  
• Glazing contractor experience is essential to avoid failed seals or premature fogging
  
  

Why Choose Ramos Industries for IGU Installations?

Our team has deep experience sourcing, fabricating, and installing IGUs across a range of commercial building types. We help clients evaluate performance data, ensure compatibility with framing systems, and manage all aspects of code compliance, field installation, and quality assurance.

We’ve successfully delivered IGU-based systems for offices, schools, hospitals, transportation hubs, and mixed-use developments, always focusing on safety, aesthetics, and long-term value.

Ready to Improve Building Efficiency with High-Performance Glazing?

Insulated Glass Units are one of the smartest ways to upgrade the thermal performance of your building envelope without compromising on appearance or daylighting.

Visit www.ramosindustriesinc.com to explore our commercial glazing services or contact us today to get expert input on the right IGU system for your next project in California or Arizona.

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