Replace Once.
Love Forever.
As Costco's authorized installation partner and the #1 Infinity by Marvin dealer in the country, Lifetime brings premium fiberglass windows and doors to your home, with a 10% Costco Shop Card on qualifying purchases.*
What Makes Infinity Different
Strength
Ultrex® fiberglass is 8x stronger than vinyl with 87% less expansion. Translation: no stress cracks, no leaks, no degradation over time.
Style
Timeless shapes, premium hardware, and finishes for any aesthetic. EverWood® gives you the warmth of real wood with none of the upkeep, while slimmer frames open up your views.
Value
A Limited Lifetime Warranty backs every product we install. As an authorized Costco vendor, Lifetime makes a premium upgrade attainable for members.
Easy Process
One Lifetime consultant. One team. One seamless experience, from your first
call to final installation.
Products
Upgrade the Way Your Home Looks, Feels, and Performs
New windows and patio doors improve comfort, curb appeal, and energy efficiency all at once. Every Infinity product is made to order for your specific space.
Every Shape. Every Size. Every Style.
Patio Doors Built to Move (and Built to Last)
Why Lifetime
The Company Behind Your Installation
When Costco selects a local installation partner for the Infinity program, the bar is high. Lifetime has installed more Infinity by Marvin windows than any dealer in the country, and we’re the team behind every Costco consultation, measurement, and installation in our markets.
That means you’re not getting a call center and a stranger with a ladder. You’re getting a team that’s done this thousands of times, stands behind every install, and is there to help when something comes up.
Reviews
See What Homeowners Are Saying
Real projects. Real results. From subtle refreshes to full transformations, Infinity owners love the difference.
FAQs
Is It Time for New Windows or Doors?
Age, material, installation quality, and climate all affect how long your windows and doors will hold up. Here are the signs it's time:
How does the Costco program work with Lifetime?
Lifetime Home Remodeling is Costco's authorized installation partner for Infinity by Marvin in Denver, Phoenix, California, and more. When you purchase through the Costco Home Improvement program, Lifetime handles your consultation, measurement, and installation, and you earn a 10% Costco Shop Card on qualifying purchases. It's the same Costco quality standard you expect, backed by Lifetime's local expertise.
Moisture Problems?
Condensation between panes, water stains, or soft spots around the frame are red flags. Left alone, moisture leads to mold and structural damage.
Sticking or Jamming?
Windows and doors that fight you every time aren't just annoying, they're a safety concern if you need to get out fast.
Drafts and Hot Spots?
If certain rooms are noticeably hotter or colder than others, your windows are likely the weakest link in your envelope.
Just Plain Outdated?
Worn-out windows drag down the whole look of your home. Infinity's clean lines and modern finishes change that instantly.
Design Your Dream Home
Shapes, finishes, hardware, and glass options, all engineered from Ultrex® fiberglass. Whether you want a subtle refresh or a bold new look, there's an Infinity product for your home and your climate.
Getting Started Steps
Four Steps to Your New Windows and Doors
Book a free in-home consultation.
Submit your info above.
Your Lifetime consultant authorized through the Costco program, helps you select the right Infinity products for your home.
We take precise measurements and deliver a detailed, no-surprise quote.
Your order is custom-built and professionally installed by the same local Lifetime team.
