Showcase is proud to provide the best in energy-efficient windows. Our energy-efficiency ratings compete with–and often beat the best in the window industry today.

Energy Cost Savings

Showcase Custom Vinyl Windows and Doors are manufactured in Houston, Texas. Our energy-efficient windows and doors are custom-built specifically for the hot, humid Gulf Coast climate. That’s why we construct our windows and doors with some of the best Solar Heat Gain Coefficients (SHGC) in the industry.

What is Solar Heat Gain? This is the heat transferred from the outside to the inside of your home through windows and doors. A higher SHGC means higher energy bills. When selecting a window you want a low SHGC. Ask your local dealer about the favorable SHCG ratings on Showcase windows.

Air leakage through windows is another consideration, especially during winter. Showcase has one of the industry’s best ratings for this criteria, as well. Regardless of the weather outside, Showcase windows and doors help keep the weather at bay and your energy bills low.

Reduced Solar Heat Gain

Solar Heat Gain is arguably one of the largest contributors to high energy costs in the Gulf Coast region. That’s why we focus on providing protection from the heat of the sun. However, a window with a low Solar Heat Gain Coefficient can also impede light transmission and decrease visibility. At Showcase, we carefully construct our windows and patio doors with the optimum balance of low SHGC and high visible light transmittance.

Environmental Influence

Not only will our windows save you money on energy bills, they help reduce your carbon footprint to protect the environment. The lower your energy bills, the less energy you use, which saves our precious natural resources.

Indoor Comfort

Lower quality windows allow outside conditions to affect the comfort of your home. For example, a lesser quality window lets the sun rays pass directly through the glass. This may make you feel hotter as the day progresses, even though the temperature outdoors remains unchanged. With the energy-efficient glass package built into our products, you can sit comfortably by your window without drawing your shades or curtains.

This is beneficial in the winter, as well. With a lesser window, cold air from outside cools the glass and the air in your home. As the air inside cools and drops to the ground, it creates a current that gives you a cold, drafty sensation. Your heater will also work harder which increases your energy bill. With our energy-efficient window design and our quality glass, discomfort is no longer a factor.

Condensation Resistance

Windows can become foggy when the exterior and interior air temperatures are different. A regular window may become opaque or streaked from condensation. With a Showcase window condensation is negligible. If you compare a standard aluminum window to a standard Showcase vinyl window you’ll easily see the difference. On a standard aluminum single hung window, the Condensation Resistance Value is approximately 12. In a standard Showcase vinyl single hung window, that value is typically 54. A higher Condensation Resistance Value means less condensation.


Ultra-Violet (UV) rays are another important aspect of a window and it’s often overlooked. When Ultra-Violet rays beam through windows into your house, the wood flooring, carpeting, furniture and the wall coverings can fade and deteriorate over time. The damage incurred and the potential replacement or refurbishing costs can add up to a serious expenditure. With Showcase windows, you keep the view while protecting your valuable furnishings.

Lower Air Treatment Costs

Custom Showcase vinyl windows are a major factor in saving money on your monthly energy bills. Because our energy-efficient windows keep the air temperature inside the house more stable, fluctuations in peak temperatures are better regulated. This can help reduce the need for a large and costly air treatment unit.

See: Cardinal Energy Calculator