If you’re in the market for new windows, you’ve probably come across the Atrium 450 series. As one of the most popular vinyl replacement window lines from a leading manufacturer, the 450 series offers many attractive features.
But are these windows right for your home and budget?
I recently installed Atrium 450 series windows in my home. After living with them for a while now, I wanted to provide a detailed review about my experiences and impressions. I’ll cover the key specs, pros and cons, prices, and other important details to consider.
Overview of the Atrium 450 Series
The 450 series is Atrium’s mid-range line of vinyl replacement windows. This line comes in single-hung, double-hung, slider, picture, bay, and bow configurations. The vinyl frames feature a multi-chambered design and fusion-welded corners for strength.
Some main highlights of the 450 series include:
- Vinyl construction with SuperCapSR exterior coating
- Energy Star certified with argon gas fill
- Composite reinforcement for structural stability
- Vent stops for controlled ventilation
- Glass fiber screen mesh
- DP upgrade rating of 50+
- Limited lifetime warranty
Overall, the 450 series hits a nice balance between affordability and features.
The vinyl frames keep costs down but aren’t as durable or insulating as other materials like wood, aluminum, or fiberglass.
But the energy-efficient glass packages and composite reinforcement boost performance.
I found the SuperCapSR exterior coating to make a noticeable difference for low maintenance. More on that later.
If you want something more affordable, Atrium’s 400 series is the next step down. For a step up in features and quality, look at the higher-end 500 series.
Atrium 450 Series Window Pros
Here are some of the main advantages I’ve experienced after installing Atrium 450 series windows:
- Energy Efficient
With an Energy Star certification and argon gas filled glazing, the 450 series offers excellent thermal efficiency. I’ve noticed a significant reduction in outdoor noise and temperature transfer after replacing my old leaky windows.
In the winter, the glass stays warmer and reduces cold drafts. In the summer, the windows block heat gain and keep things cooler indoors. The multi-layer Super Spacer in the glazing maximizes argon retention.
- Low Maintenance Exterior
The SuperCapSR exterior coating is a great feature. It’s a thick, acrylic-based layer that encapsulates the vinyl. This protects the frames from weathering and keeps the windows looking new for longer.
I don’t have to deal with peeling, flaking, or chalking like with lower-end vinyl windows. Cleaning is easy with just soap and water.
- Snug Fit and Operation
Everything fits together tightly and the windows operate smoothly. The fusion-welded corners prevent air leaks and enhance strength. The dual-seal insulating glass prevents condensation or fogging.
And the block-and-tackle balance system allows the sash to stay in place when opened. No more slammed down windows!
- Strong and Durable
Despite being vinyl, Atrium reinforces this line to prevent sagging or bowing. The composite reinforcement adds stability in the sash and frame. Steel reinforcements also strengthen meeting rails.
The windows feel very solid and robust overall. I don’t have to baby them, which is nice with kids and pets around.
- Good Light and Visibility
The ComforTech DLO glass keeps glare down while letting in natural light. I don’t get eye strain or squinting like before. And the windows just brighten up my home’s interior.
Visibility is also clearer compared to my old foggy windows. The screens stay crisp and don’t obstruct exterior views.
- Responsive Customer Service
Atrium has been very responsive whenever I’ve needed assistance or had issues. For example, when one of the windows arrived slightly damaged, they quickly sent a replacement at no cost. I’m glad they stand behind their products and care about customer satisfaction.
Atrium 450 Series Window Cons
While I’m happy overall with my Atrium 450 series windows, there are a few potential downsides to note:
- Vinyl Isn’t the Most Durable
Vinyl is great for keeping costs down but it’s not the most robust frame material.
While the 450 series is reinforced, vinyl can still dent, warp, or crack over time.
These windows may not hold up as long as wood, fiberglass, or metal alternatives in some environments.
- Not as Energy Efficient as Premium Lines
With a DP 50 rating, the 450 series offers good but not outstanding thermal performance. Some higher-end window lines from Atrium and other brands can deliver even better energy savings. But you pay more for those top efficiency levels.
- Can Feel Flimsy Without Reinforcements
On their own, vinyl frames feel a bit flimsy before being reinforced in the manufacturing process. It’s essential that Atrium properly assembles the windows to get the sturdy end result. Pay attention to quality control when installing.
- Glass Isn’t Impact-Resistant
The 450 series standard glass options don’t provide impact resistance. For protection against windblown debris, storms, or intruders, you’ll need to upgrade to a more advanced glazing material. This adds cost.
- Doesn’t Block Sound as Well as Other Materials
While the 450 series reduces outdoor noise, the vinyl frames aren’t as adept at blocking sound transmission as dense materials like wood or fiberglass. These windows suffice for most areas but may not cut it next to busy roads or airports.
Limited Color and Style Options
Vinyl windows can’t match the aesthetic variety of wood windows. The 450 series only comes in white or beige exterior colors. And style choices are focused on fundamental configurations. If you want lots of ornate design options, vinyl has limitations.
Atrium 450 Series Window Costs
I paid approximately $600-700 per window for standard 450 series double-hung windows, including professional installation. This is for a 25.5 x 47 inch size.
Price can vary based on your exact window specifications, glass packages, additional options selected, retailer markups, and labor.
Here are some other averages for 450 series window pricing:
- Single-hung: $300-$400
- Large picture window: $800-$1,000
- Sliders: $400-$600
- Custom shapes: $1,000+
Atrium 450 windows are competitively priced overall for mid-range vinyl replacement windows. You’ll pay more for higher efficiency series like the 500 line. And less for Atrium’s entry-level 400 series or other brands’ basic vinyl models.
I found the value of the 450 series to be excellent. The features and quality exceed the price point. Upgrading to triple pane glass only added about 10% to the project cost but made a noticeable improvement in thermal performance.
When getting quotes, pay attention to the glass package chosen. This makes a big impact for both efficiency and price. Going with a lower-grade glass to save money could be false economy in the long run.
450 Series Window Specs
Here are some other key specifications for the Atrium 450 series:
- Frame thickness: 3 1/4 inches
- Jamb depth: 3 9/16 inches
- Insulated glass: 7/8 inch double pane with Super Spacer standard; triple pane optional
- DP rating: 50 standard; 60 or higher available
- U-Factor: 0.27 to 0.18 range
- SHGC: 0.27 to 0.18 range
- Air infiltration: 0.18 cfm/ft2 max
- Lifetime limited warranty on vinyl and glass; 20 years on components
Overall, the specs stack up well versus other mid-priced vinyl lines. The welded corners, composite reinforcements, Super Spacer, and other assets help performance.
Atrium 450 Series Window FAQs
Here are answers to some common questions about the Atrium 450 series:
Yes, Atrium is one of the best vinyl window manufacturers. Their windows consistently earn strong reviews and feedback from both homeowners and professionals. Key reasons they are a recommended brand include competitive pricing, good warranties, reliable performance, and quality materials and manufacturing.
Along with Atrium, some other top window replacement brands include Pella, Andersen, Jeld-Wen, Milgard, and Simonton. Which is “best” can vary based on your needs and budget. Atrium offers a nice balance of affordability, features, and quality.
Atrium 450 series windows come with a lifetime limited warranty on the vinyl frames and insulated glass units. Operating components like balances are covered for 20 years. The warranties are transferable if you sell your home.
The main disadvantages of vinyl windows are:
1. Vinyl isn’t as strong, durable, or long-lasting as wood, fiberglass, or metal
2. Poor insulating compared to other materials if not multilayered
3. Can warp, bend, dent, crack over time
4. Limited color and styling options compared to wood
However, modern vinyl compounds, coatings, and manufacturing methods continue to improve. Quality vinyl windows like Atrium’s 450 series minimize downsides while offering affordability.
Final Thoughts on Atrium 450 Series Windows
In my experience, the Atrium 450 series is an excellent mid-range vinyl window option combining quality, efficiency, features, and reasonable pricing. The pros outweigh the cons overall.
The reinforced vinyl frames prevent sagging and boost durability. The double or triple pane glass packages deliver solid thermal performance, especially when upgrading to argon fill and Super Spacer.
And the quality manufacturing results in a tight seal, reliable operation, and a long service life.
While not the most heavy duty in absolute terms, the 450 series performs admirably within its vinyl category and price point. The windows make my home warmer in winter, cooler in summer, and more comfortable year-round. Noise, glare, and exterior views are also improved.
Yes, vinyl has inherent limitations on durability and style options. And these aren’t Atrium’s top-of-the-line offerings. But for a homeowner wanting an affordable PVC replacement window with very good performance and features, the 450 series is a great choice.
The windows have exceeded my expectations and I’m glad I chose them for my house.