The best replacement windows vary depending on the kind/type of window being replaced.
Be cautious when choosing a replacement
When replacing any window in your home you need to be sure that the replacement will be durable enough and that its construction will aid in longevity. The use of super spacers to prevent leakage of gases between panes will be an important part of ensuring that your windows last. Many companies take a short cut by not using super spacers and substitute them with metal spacers instead. The higher end units tend to utilize super spacers and for good reason. They prevent an otherwise 10% leakage per year that you’ll experience when using metal spacers.
If you are looking to replace wooden windows then Marvin is a great company to work with, as they have a solid reputation and offer high quality windows. Below are a listing of several manufacturers of replacement windows:
Alside
They have purchased a company called Alpine in Washington and got their hands on a low end, dicount window in the process. They do manufacture other window types so be careful when using them for cheap windows as the quality can be inferior.
Andersen
They have a good reputation and are very well known for making high quality wood windows. They manufacture the Renewal series of windows which uses a material containing more than 38% reclaimed wood fiber known as Fibrex. They’re a good company if you want to install wood windows, although be forewarned; wood windows are not the best option if you live in climates that receive a lot of rainfall like the Northwest. They require much more maintenance than vinyl windows.
CertainTeed
They have certainly left their mark in the replacement window industry and are a large firm with many innovative strategies to be credited for. They manufacture various products and have a long line of options from siding to windows.
Comfort Design
These guys, better known as CDI are Washington based and make really high end vinyl windows. Their windows are very appealing and the construction process using multiple chambered methods make for a very strong and sturfy replacement window.
They manufacture custom replacement windows for well known companies like Northwest Home Improvement Company. Their architectural window series has a longstanding reputation for stellar performance and is aesthetically pleasing as well.
LBL
LBL produces very attractive windows and also manufactures customized windows for various companies. Cascade windows recently acquired them and as a result added a high quality window to their product line. They are a great company with a repuation to match.
Marvin
If you’re looking for a wooden replacement window then meet Marvin. They manufacture a really attractive wood window replacement that are preferred by many professional windows installers.
Milgard
Here in the Pacific Northwest these guyes are very well known and are used for many new construction jobs. They make a large portion of builder grade windows but quality is not always so wonderful. It is important that you check warranties before buying.
Pella
Pella is another large firm with wide coverage but they have been making several low quality windows in the past few years. They once had an excellent reputation for high quality wooden windows but are manufacturing very many low end vinyl windows for the construction sector, as of late.
Simonton
Simonton makes very good window frames and are quite popular throughout the nation. They produce a very high quality window frame that is very durable and pleasing to eye.
Vinyl Product Industries
Vinyl Product Industries, or VPI, have manufactured very high quality, durable replacement windows in Washington over the past few years and have a great reputation in the industry.
