Comfort World 4000 Windows are marketed as a Window World model, but are actually either an AMI or an Xact window (two different windows, one of which will be the model available in your are). Essentially the window is manufactured by either Associated Materials, Inc. (AMI) or MIWD (who makes the Xact line). These window models are then sold to Comfort World, who then resells them as the Comfort World 4000 series. At one point, Window World was buying their windows from Alside, but they have switched their supplier and are now using AMI and Xact. Neither AMI nor Xact has a very good reputation in the industry for making a top end vinyl window. They are considered much more builder grade or entry level vinyl windows.
Standard features on the Comfort World 4000 window include a 3-1/4" frame depth, balance channel covers, a sloped sill, 7/8" insulated glass unit, night latches, steel reinforced meeting rails, double recessed locks, a foam insulated frame wrap, an integrated lift rail, as well as an extruded half screen. Styles include a double hung, slider, awning, casement, bow, bay and basement window options. Interior color frame options include American Brown, Dark Oak, Cherry, Light Oak, Beige and White. The Comfort World 4000 Window Series gets a out of 5 star rating.
Review By Jim R. - Site Editor - Updated In 2023
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Consumers can expect the Comfort World 4000 Series to run approximately $20 to $30 per square foot for the window itself. Comparably priced windows include the Alside Excalibur window prices and Silverline 2900 Series.
-- Window Itself: $20 to $30 per square foot --
» More On Comfort World Window Costs
The ratings for the Comfort World 4000 are not easily identifiable for one simple reason, it's hard to find the window posted on the nfrc.org website. Xact is not listed, although MI is listed as a manufacturer. The problem is the models listed do not include a 4000 model.
As soon as we get more information on the performance numbers of the Comfort World 4000 window, we will be sure to post it here.
The Comfort World 4000 comes with the standard Limited Lifetime Window World warranty that covers the original homeowner for all vinyl and mechanical parts, the insulated glass unit, and accidental glass breakage. The warranty is transferrable, but does require some notification and steps to be completed by the consumer.
There are a number of exclusions and limitations that apply, as with all warranties, so make sure to always read the warranty in full prior to your purchase.
Have you had the Comfort World 4000 window installed in your home and have a review to post online? We'd love to hear from you and find out what you think of this window and the company that installed it.
Do you have questions about the Comfort World 4000 model? Let us know what you think about this vinyl window.
Hello, we have comfort windows in our home but a few of them have a Seal Failure and the argon gas has escaped leaving us with a dirty looking window. We don’t need the whole window replaced just the bottom glass part. Where can I find or how do I go about getting this replaced. I tried looking them up on line to see but I’m hitting a dead end.
Do you have any advice you can offer? Thank you.
Freddy - Homeowner - January, 2020
Freddy, this can be a tricky business. Why? Because window companies don't seem to always want to do right by their customers. You can try to look up a local Comfort Windows dealer and essentially call them up for a free bid to replace your windows. When they show up, explain that the windows you have are theirs and ask them how you can get the replacement glass. When they first come out, ask about the Comfort Window warranty. If he tells you its a lifetime warranty, then you have them "lawyered." Will this for sure work, no.
The other approach you can take is to simply yelp "local window repair" and see what a top rated company would charge you to replace the glass window. This might be your quickest approach and might not be that costly.
These are my two suggestions. I wish I had something more foolproof for you.
Editor Jim R. - January, 2020