Discontinued Alside Window Models

Here we’ve compiled our old reviews for discontinued Alside window models including:

  • Alside Excalibur
  • Sheffield
  • Ultramaxx
  • Centurion
  • Geneva

These models are gone but not forgotten. If you have any of these windows in your house you may be interested in the Alside window warranty and you can find info on that on our Alside windows page along with reviews of models that are still available.

If you’re looking for an Alside window that you can’t find listed anywhere it may be a private label window created for a specific contractor. Post a comment about it and we’ll be happy to help you make sense of it.

Now on to the old reviews.

Alside Excalibur window review

The Alside Excalibur window was the most popular window produced by Alside for many years.  Millions of these windows have been installed all across the country.  The Alside Excalibur window is slated to be discontinued in 2014 and replaced by the newer Alside Mezzo window.

The Alside Excalibur window has been a popular option because it meets the needs of most homeowners at an affordable price.  This window came with standard features that we’re available options on competing models.

excalibur-frame-1

Standard features on Alside Excalibur windows:

  • Double strength glass
  • Heavy duty screen frame
  • Steel reinforced sashes
  • DP50 rated for strength
  • Sloped sill

Despite the list of standard features, the Excalibur window was often criticized online.  This had a lot to do with the fact that it was sold by Window World under the Comfort Word 4000 brand at very low prices.  This made the competition offering similar products at higher prices uncomfortable.

Not all criticism of the Alside Excalibur was unfounded.  The design was a little past its prime and several elements were due for an upgrade.  In addition the manufacturing tolerances weren’t as tight as they could have been which led to inconsistent quality.

What about the Alside warranty?

The warranty from Alside was always pretty solid and that was certainly the case with the Excalibur windows.   The warranty covers the glass seal, the windows and the hardware for as long as the original purchaser lives in the home and it is transferable when the house is sold.

Alside Sheffield Reviews

Here we’ll be taking a look at the Alside Sheffield windows.  The Sheffield windows used to sit near the top of the Alside window line.  Very similar products are sold under various brand names including Alside Ultramaxx and Comfort World 6000 series.  This doesn’t necessarily mean it’s  a better window than the Alside Excalibur or the Alside Mezzo (their other common offerings), but it does mean it will likely cost more.

In comparison to the newest window in the Alside line, the Alside Mezzo window (which we reviewed recently), the Sheffield doesn’t compare very well except in a few specific situations.  For example, the Alside Sheffield window is available with triple pane glass while the Mezzo window was not when initially launched.  The Mezzo window now has this feature available so that leaves one less reason to buy the Sheffield model.  Obviously this only matter to you if you’re  a triple pane kind of person.

Another point of differentiation is the fact that the Sheffield window has a few extra pieces of weather stripping.  This sounds good and the salesperson might tell a great story, but if you compare the air infiltration ratings you’ll see the Mezzo is typically better.  This tells you the extra weather stripping on the Alside Sheffield isn’t doing you much good.  It provides the salesperson a nice story to tell, but it doesn’t do much else.

The biggest drawback in my mind is that the Alside Sheffield window uses a much thicker frame which reduces the glass area considerably.  If you’re looking at samples in person take a look at the thick frame, especially the sill, and decide if that’s what you want in your home.

Alside Sheffield vs Ultramaxx

The Alside Sheffield and the Alside Ultramaxx share the same frame and ALMOST all of the same parts.  There are only 2 two differences between these 2 products.  One is the type of sill.  The Sheffield uses a sloped sill that allows water to run off and the Ultramaxx uses a pocket sill that drains water out through weep holes in the frame.  There are advantages and disadvantages to both systems.

Alside Sheffield vs Ultramaxx
The Alside Sheffield and Ultramaxx models are almost exactly the same product.

The second difference between the Sheffield vs the Ultramaxx is the lift rail on the sash.  The Sheffield has a lift rail at the very top and at the very bottom.  The Ultramaxx adds another in the middle of the window.  Having trouble visualizing what I’m saying in this section?  Don’t sweat it, these two windows are essentially the exact same product with different names.

To sum up the Alside Sheffield review I’ll say if you’re getting triple pane glass it’s a fine option.  If you’re not this window does’t really make sense and you’ll be better off saving a few bucks with the Alside Mezzo.

Alside Ultramaxx Reviews

For our Alside Ultramaxx window review we’ll compare the Ultramaxx to the other Alside window products.  The Ultramaxx windows sit near the top of the Alside window line.  Very similar products are sold under various brand names including Alside Sheffield and Comfort World 6000 series.  When we say they sit near the top of the line that doesn’t necessarily mean it’s  a better product than anything else, but it does tend to cost more than some other products out there.

When comparing and reviewing Alside windows, the Alside Mezzo window (which we reviewed recently) stacks up pretty well.   The Ultramaxx doesn’t compare very well except in a few specific situations.  For example, the Alside Ultramaxx window is available with triple pane glass while the Mezzo window was not available with this option when initially launched.  The Mezzo model does now offer this option so there’s one less reason to pick the Alside Ultramaxx window..  Obviously this only matter to you if you’re interested in triple pane glass.

Another difference is in the weatherstripping that the Ultramaxx window comes with.  This sounds good and the salesperson might tell a great story to go with it, but if you compare the air infiltration ratings you’ll see the Mezzo is typically better.  This tells you the extra weather stripping on the Alside Ultramaxx isn’t doing you much good.

One important factor to consider is that the Alside Ultramaxx window uses a substantially thicker frame which reduces the glass area considerably.  If you’re looking at samples in person take a look at the thickness of the frame, especially the sill at the bottom.   Only you can decide if that’s what you want in your home, but it will reduce the visible glass area and reduce the visible transmittance rating.

Alside Ultramaxx vs Alside Sheffield

The Alside Ultramaxx and the Alside Sheffield share the same frame and ALMOST all of the same parts.  There are only 2 two differences between these 2 products.  One is the type of sill.  The Ultramaxx uses a Pocket sill that allows water to run down through the frame and the Sheffield uses a sloped sill that lets water run down and out.  There are advocates for both designs, but at the end of the day they’re pretty similar.   Even the Sheffield here doesn’t use a true sloped sill, but perhaps that’s a discussion for another day.

Alside Geneva Windows Reviews

The Alside Geneva window is a bit of a strange bird.  It’s a hybrid unit that has welded sashes and a mechanically fastened frame.  This is a bit of an unusual design.  In fact, we’re not aware of another window still on the market that is built like this.

The pitch for the Alside Geneva window was that the mechanically fastened frame allows it to be more easily installed in old out of square openings while the welded sashes provided the strength needed.

alside geneva windows reviews
Here’s a glamor shot of the Alside Geneva windows.

In reality it’s just an old design that is on it’s way to the glue factory.  The Geneva window, along with the Alside Centurion window are being discontinued and replaced with the Alside Fusion window.

This is a worthwhile change as the Geneva window was long past its prime.  These older windows have still been sold recently with a rather large following in Boston for reasons that can’t really be explained.  Regardless, the end of the Geneva window won’t disappoint too many people.

What to do if you have discontinued windows?

If you have any of these windows in your house you may be looking for warranty info. You can find the Alside window warranty page here.

If you’re shopping for new windows you can find window reviews here and recommended window companies here. Enjoy!

Preservation Windows Review (2025): Prices, Quality, Warranty & Real-World Feedback

If you’re looking into replacement windows in 2025, there’s a good chance you’ve come across Preservation Windows. They’re marketed as premium, energy-efficient, and custom-built — but are they really worth the higher price tag?

In this detailed review, we’ll cover everything you need to know before signing a contract — including prices, warranty details, energy efficiency, common complaints, and how Preservation stacks up to ProVia, Alside, and Simonton.


🏆 Quick Verdict

Preservation Windows are a premium vinyl window line owned by Associated Materials (AMI) — the same company behind Alside and Gentek. They’re sold as a higher-end product through exclusive dealers, focusing on long-term durability, energy efficiency, and custom aesthetic options.

They perform well, look great, and come from a reputable manufacturer — but as with most premium vinyl products, value depends heavily on the dealer, installation quality, and price transparency.

CategoryScoreNotes
Quality88Premium-grade vinyl; solid frame construction
Energy Efficiency92Excellent when upgraded with ClimaTech® glass
Options & Aesthetics86Great finishes and decorative styles
Warranty90Strong limited lifetime coverage
Price78Higher than average for vinyl
Overall87 (B+)High quality, but shop carefully for pricing

Bottom Line:
Preservation offers high-end vinyl performance and great looks for homeowners who plan to stay in their home long-term. You’ll pay more than you would for mid-tier vinyl like Alside Mezzo or Simonton Reflections 5500, but the step-up in design and efficiency is noticeable.

Preservation window salespeople often make high commissions which inflates the retail prices without adding much value at all.

To find a better value look for the Gentek Signature Elite product line. The Signature Elite model is made by the same parent company, uses the same type of upgraded hardware and components and is now offered by national dealers using an online sales model at better prices.


Who Makes Preservation Windows?

Preservation is manufactured by Associated Materials (AMI), a long-established U.S. building products company that also owns Alside and Gentek.
While Alside focuses on mainstream affordability and Gentek caters to higher end customers looking for a better value, Preservation serves as AMI’s premium vinyl window brand — often sold through select authorized dealers which can cause prices to be high relative to the value they provide.

That matters because AMI’s size and stability mean stronger warranty support, consistent manufacturing, and access to replacement parts for decades to come.

🔗 Visit: Preservation Windows Official Website


Build Quality & Design

Preservation windows are built from premium, multi-chambered vinyl engineered for both strength and insulation. You’ll notice cleaner welds and smoother operation compared to more basic vinyl windows.

Key design features include:

  • Fusion-welded frames and sashes for rigidity
  • Reinforced meeting rails to prevent warping
  • Sloped sill design for drainage and air control
  • ClimaTech® insulated glass systems (Low-E + argon)
  • Optional decorative grids, woodgrain interiors, and hardware upgrades

Overall, the build quality is excellent for a vinyl window. If you’re comparing them side-by-side with Alside or Simonton, Preservation feels heavier and more solid.


Energy Efficiency & 2025 Federal Tax Credits

Preservation windows are ENERGY STAR® 7.0 certified when properly configured and can qualify for the 2025 Federal Energy Efficient Home Improvement Credit (25C) — worth up to $600 per household per year.

Their ClimaTech® glass options use combinations of Low-E coatingsargon gas fills, and warm-edge spacers to minimize thermal loss.

If you live in a cold climate, you’ll want a U-factor under 0.27. In hot regions, look for a Solar Heat Gain Coefficient (SHGC) below 0.30.

🔗 See official guidelines at ENERGY STAR Tax Credit Info
🔗 Verify U-factor ratings at NFRC Certified Product Directory


Preservation Window Pricing (2025 Installed Costs)

Preservation windows are priced above mid-range vinyl lines due to their dealer-exclusive nature and higher-end features. Expect quotes to vary significantly based on dealer markup and upgrades.

Average Installed Prices by Style

StyleAverage Installed PriceNotes
Double Hung$950 – $1,500Most popular style
Slider$900 – $1,400Wide openings, good ventilation
Casement / Awning$1,100 – $1,800Great for energy efficiency
Bay / Bow$3,500 – $6,500Structural framing adds cost
Picture / Fixed$700 – $1,200Best price per square foot

Regional Installed Cost Estimates (10 Double-Hung Windows)

RegionTypical RangeNotes
Midwest$9,000 – $13,500Competitive installer rates
Northeast$10,000 – $15,000Higher labor and material costs
South$8,500 – $13,000Lower labor costs
West Coast$10,500 – $16,000Shipping and installation costs higher

Warranty

Preservation’s limited lifetime warranty covers:

  • Vinyl frames and sashes for the original homeowner
  • Insulated glass seal failures
  • Hardware and screens

It’s transferable once, usually within 30–60 days of home sale, and remains one of the stronger vinyl window warranties in the industry.

⚠️ Labor is not included, which is common for most vinyl window warranties — make sure your installer provides their own workmanship coverage.


Pros & Cons

✅ Pros❌ Cons
Excellent energy efficiencyHigher price than most vinyl windows
Beautiful finish and color optionsDealer-only sales limit transparency
Backed by Associated MaterialsLabor not covered in warranty
Strong warranty and NFRC performanceRegional availability may vary
Attractive styling and operationLimited public pricing online

Common Complaints

Homeowners report these recurring issues (which often come down to installer quality):

  1. Price Transparency – Because Preservation windows are sold through exclusive dealers, getting a clear, itemized quote can be frustrating.
  2. Dealer Variability – Some dealers are fantastic, others not so much — installation quality affects long-term performance.
  3. Availability – In certain regions, authorized dealers are limited, which can restrict options and slow down service.

If you get multiple quotes and compare specs carefully, these issues are easy to avoid.


Preservation vs. Other Window Brands

BrandMaterialEfficiencyPrice InstalledWarrantyIdeal Buyer
PreservationPremium Vinyl★★★★☆$950–$1,500Lifetime (Limited)Homeowners wanting premium vinyl
ProVia EndurePremium Vinyl★★★★★$1,000–$1,600Lifetime (Transferable)Maximum performance seekers
Alside MezzoMid-Tier Vinyl★★★☆☆$600–$1,000Lifetime (Limited)Budget-conscious homeowners
Simonton Reflections 5500Mid-Tier Vinyl★★★★☆$700–$1,200Lifetime (Limited)Reliable, widely available option

Related Reviews


preservations windows ratings
See the ratings for Preservation windows with various glass options.

Buying Tips to Get the Best Deal

  1. Ask for Itemized Quotes – Demand transparency in your pricing breakdown.
  2. Compare Ratings, Not Just Brands – Use NFRC U-Factor, SHGC, and Air Infiltration to compare apples-to-apples.
  3. Check ENERGY STAR Qualification – Only certain glass configurations qualify for the 2025 tax credit.
  4. Beware of “Today Only” Sales Pitches – A fair price today will be fair tomorrow.
  5. Choose the Installer First – A great installer makes even a mid-tier window perform like a premium one.

For more on avoiding sales gimmicks, see:
Window Sales Tactics Explained


preservation windows complaints
Here’s a glamor shot of some Preservation windows with an interior woodgrain finish.

FAQs: Preservation Windows 2025

Are Preservation windows good?
Yes. They’re high-quality vinyl windows offering excellent insulation, appearance, and durability — backed by a strong warranty.

Who makes Preservation windows?
Preservation is owned by Associated Materials (AMI), the same parent company as Alside and Gentek.

How much do Preservation windows cost?
In 2025, most Preservation windows cost between $950 and $1,500 installed per window, depending on style and region.

Do they qualify for the 2025 federal tax credit?
Yes, when ordered with ENERGY STAR®-qualified ClimaTech® glass packages.

What’s the warranty like?
Preservation offers a limited lifetime warranty that covers vinyl, glass, and hardware. Labor depends on your installer.

Preservation vs. ProVia — which is better?
ProVia Endure has slightly better efficiency and color customization. Preservation offers comparable quality and is often easier to get through local dealers.


Find the Best Window Companies Nationwide

If you’re considering Preservation windows — or just want honest, pressure-free pricing — the best move is to find a reputable, transparent installer.

👉 Find the Best Replacement Window Companies in Your Area

We maintain a list of recommended window companies all over the U.S. — companies that treat customers fairly and explain pricing upfront.


Our Commitment to Accuracy

We’ve been writing about replacement windows for over a decade. Our goal is simple: to give homeowners clear, honest, and accurate information — without the sales pressure.

If you believe anything in this post is incorrect, please contact us with supporting details. We’ll verify and update the post right away.

📩 Contact The Window Dog