Replacement Windows, Doors, & Siding FAQ

We serve El Paso and the Borderland, from West Texas into Southern New Mexico, including El Paso, Las Cruces, Alamogordo, Horizon City, Ruidoso, Cloudcroft, Fabens, Socorro, Deming, and Anthony. If your town is nearby but not listed, call 915-228-3938, because we likely serve it too.

Alside and Provia windows, Provia and Therma-Tru entry doors, and Alside, Provia, and Therma-Tru patio doors. Every product is backed by our lifetime warranty.

Low-E, energy-efficient windows are the top choice. Our intense sun and triple-digit summers make a low Solar Heat Gain Coefficient (SHGC) the most important rating, because it measures how much of the sun’s heat the glass blocks. We help you choose the right glass package for the desert.

Ask for the NFRC rating on each window you’re considering. NFRC labels are independently certified and rate whole-window performance by U-Factor and Solar Heat Gain Coefficient. In our hot-dry climate, focus on a low SHGC first. Ignore the sales hype and choose the best NFRC ratings for El Paso at the best cost.

ENERGY STAR is a federal certification program that identifies energy-efficient windows optimized for your climate zone. El Paso sits in the Southern climate zone, where the qualifying criteria call for a low SHGC (0.25 or less) to block the desert sun. Any window we order with a Low-E glass upgrade meets ENERGY STAR for our zone.

Yes. Our Low-E glass has a microscopically thin coating that reflects solar heat and blocks up to 99% of UV rays, which keeps your home cooler and protects floors, furniture, and curtains from the sun fading that’s so common in the Borderland.

Every home is different, so we provide a free, no-obligation estimate. Because we offer factory-direct pricing, El Paso homeowners get quality windows and doors without big-box markups. A free in-home estimate gives you an accurate number, usually in about an hour.

For older El Paso homes, yes. Cooling costs run high through our long summers. Replacing worn, single-pane windows with energy-efficient Low-E units reduces solar heat gain and air leakage, which eases the load on your air conditioner and lowers your bills month after month.

Even the best window underperforms if it’s not measured and installed correctly, because the gaps around a poorly fitted window are exactly where desert heat and blowing dust get in. Our professional installation seals those gaps, locks in your energy savings, and is backed by a lifetime warranty.

Most installations are completed quickly, often in a single day depending on the number of openings. We’ll give you a clear timeline during your free in-home estimate and keep you informed at every step, from scheduling to cleanup.

Yes. Along with replacement windows, we install custom Provia and Therma-Tru entry doors and Alside, Provia, and Therma-Tru patio doors. An insulated entry door and a well-sealed patio door work with your windows to keep the desert heat out and boost security and curb appeal.

Yes. The Window Source of El Paso is locally owned and operated by Fernando Chavez, based in El Paso and backed by a national brand. Our team lives and works in the same Borderland communities we serve, so you’re working with neighbors, not a distant call center. Call 915-228-3938 for a free estimate.