Mr-Glass Window Replacement Nationwide | Westlight Windows & Doors

Mr-Glass Window Replacement: The Los Angeles Owner’s Guide

If you have a Mr-Glass window that’s fogged, cracked, or refusing to open, we can replace it. Westlight Windows & Doors stocks Mr-Glass-compatible replacement sashes, insulated glass units, balances, and hardware, and most single-window replacements in Los Angeles run $450-$1,100 installed depending on size, glass package, and frame condition. We’re an independent Kingswell location, not a Mr-Glass dealer, which means we match what you have rather than steering you toward what we’d rather sell. Most owners discover the failure the same way: a window that suddenly won’t stay up, condensation you can’t wipe away because it’s between the panes, or a draft that shows up every winter morning.

Call (903) 354-7134

Key Takeaways:

• We stock Mr-Glass compatible parts on the truck for most Los Angeles service calls.
• Insulated glass replacement typically costs $250-$550 per sash, full window replacement $450-$1,100.
• You’ll get a written price before any work starts, per the Kingswell Guarantee.
• If the replacement fails within the guarantee period, we return and fix it at no charge.

Which Mr-Glass Models This Applies To

Mr-Glass windows have been installed in Los Angeles homes since the late 1990s, mostly in single-family and small multi-unit buildings. The most common lines we service are the older Series 300 and Series 500 single-hung and horizontal sliders, along with the fixed picture windows that got paired with them. Here’s the compatibility gotcha: Mr-Glass changed their balance shoe design around 2012, so a Series 300 built before that change needs a different balance cartridge than one built after it. The label on the top edge of the sash usually tells you the series, but if the label’s faded, the sash width and the glass thickness (measured with the sash out) will get us a match. The OEM glass packs are long discontinued, which means we either install a quality aftermarket insulated unit cut to the exact Mr-Glass frame dimensions or replace the full sash with a current-production unit that carries a fresh seal warranty. Both approaches work; the right choice depends on whether the frame itself has taken on water or warped in the Los Angeles sun.

Signs Your Mr-Glass Window Replacement Is Failing

• Condensation between the panes. This means the seal on the insulated glass unit has failed and moist air is getting trapped inside. Fogging is the telltale sign, and it never clears up on its own. In Los Angeles, the temperature swings between warm days and cool nights stress those seals more than most people realize, especially on west-facing windows that bake in the afternoon heat.
• Window won’t stay open or feels heavy. The balance system (the mechanism that counterweights the sash) has worn out or the shoe has snapped. This is one of the most common Mr-Glass failures we see in the Crenshaw corridor and other neighborhoods where original windows are hitting the 20-year mark.
• Visible draft or air movement around the edges. Weatherstripping has compressed or the frame has shifted slightly, and you can feel air moving on a breezy day. Drafts also push up cooling costs during Los Angeles summers, which are getting longer every year.
• Hard to lock or the lock no longer engages. The frame has racked out of square, or the lock hardware itself is worn. That’s both a security and an energy problem.
• Cracked glass or a visible chip that’s spreading. Southern California sun magnification plus minor frame settling can turn a small chip into a running crack quickly. If you can see it growing, don’t wait.

Replacement Cost & What’s Included

Most Mr-Glass window replacements in Los Angeles fall into this range, installed:

• Glass-only replacement (sash stays in frame): $250-$550 per sash for a quality insulated unit, depending on size and whether you want low-e glass (a thin coating that reflects heat back into the room in winter and out in summer).
• Full sash replacement: $400-$800 per sash, which gets you a new frame, new glass, new balances, and new weatherstripping.
• Full window replacement including frame: $450-$1,100 per window, depending on size, opening style, and glass package.

What drives the range is mostly size and glass. A small bathroom window is at the low end; a large living room picture window is at the high end. You’ll get the written price before any work starts, and that price does not change at the door. No revised invoices, no surprise adders. Every Mr-Glass replacement we install carries the 365-Day Done Right Promise: if it’s not right within the guarantee period, we come back and make it right at no charge.

DIY or Call Us?

There are things you can check on your own. You can look at the label on the sash edge to find the series number. You can measure the visible glass width and height so you have a reference point for the call. You can check whether the frame shows signs of water damage or rot around the corners.

What we don’t recommend is pulling a Mr-Glass sash and trying to swap the glass or the balances yourself. The balances are under tension, and the sash can be heavier than it looks. We’ve had homeowners in the Palms neighborhood try to save a few hundred dollars and end up paying more to fix a damaged frame that got dropped or forced. If the job is beyond your comfort level, call us at (903) 354-7134. Owen Satterfield grew up in Palms watching his grandfather re-glaze windows on the old craftsman bungalows there, and he’s spent two decades making this exact job look easy. It’s not as easy as it looks.

FAQs