Which replacement window is best for your home?

Not All Replacement Windows Are Created Equal

The Problem: Your Windows Aren’t Working Like They Used To

Are your windows drafty, fogged up, or just plain outdated? Maybe you’re tired of cranking them open only to fight with stuck frames and broken seals. Or worse, your energy bills keep rising and you’re starting to feel it in your wallet.

Cheap Windows Cost More Than You Think

It’s tempting to grab the cheapest vinyl option and call it a day. But here’s the truth: most vinyl windows fade, warp, or fail in Colorado’s extreme climate long before they should. You end up paying again—sometimes in comfort, sometimes in repairs, always in regret.

And resale? Buyers can tell the difference. Low-grade windows make your home look tired and underperform during inspections.

Infinity from Marvin – Fiberglass Built to Outlast

At Gravina’s Window Center of Littleton®, we don’t believe in throwaway home improvements. We believe in solutions that last.

That’s why we install Infinity from Marvin fiberglass windows—the most durable, energy-efficient, and low-maintenance windows on the market.

• 38% longer life expectancy than vinyl
• Engineered for Colorado’s unique weather challenges
• Low-E glass coatings that block UV rays and reduce heat gain
• Backed by a Limited Lifetime Warranty from a brand homeowners trust
• Installed by our certified, experienced craftsmen—not subcontractors

You’re not just replacing windows—you’re making your home stronger, quieter, more comfortable, and more valuable.

Performance You Can Feel

Infinity windows have some of the highest ratings from the National Fenestration Rating Council (NFRC). They beat the competition on thermal efficiency, structural strength, and overall performance.

Not only that—new windows and doors offer an average 73% return on investment at resale, outperforming most interior remodels.

The Next Step: Get Expert Help from Colorado’s #1 Infinity Dealer

We’ve been doing this since 1973. We know windows. We know what works in the Front Range and the foothills. And we know how to make this process easy for you—start to finish.