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There’s so much talk about going green, energy conservation and energy-efficient products. You may question what separates fact from fiction on true energy savings. For instance, is it really worthwhile to replace old windows and doors with more energy-efficient ones? The answer is yes.

Benefits of Energy-Efficient Windows

Investing in ENERGY STAR® qualified products now can help you save money on energy costs year after year. It’s a long-term savings that can really add up. And in the short-term, you’ll enjoy a home that’s more comfortable.

Installing ENERGY STAR qualified windows and patio doors will shrink your energy costs — and carbon footprint — by about 7% to 15% compared to nonqualified products.

For a typical home, choosing ENERGY STAR qualified windows to replace single-pane windows can:

  • Save you $146 to $501 a year on energy costs
  • Reduce your carbon footprint — the impact your activities have on the environment — by 1,147 to 3,839 pounds of carbon dioxide (CO2) a year. That’s the equivalent of 59 to 196 gallons of gasoline

For a typical home, choosing ENERGY STAR qualified windows to replace your double-pane, clear glass windows can:

  • Save you $71 to $247 a year on energy costs
  • Reduce your carbon footprint by 692 to 2,825 pounds of CO2 a year. That's the equivalent of 35 to 144 gallons of gasoline.


Pella’s Most Energy-Efficient Products

One of the most common reasons to replace existing windows is to increase the energy efficiency of your home. You'll notice the savings immediately, because poorly performing windows and doors cause heating and cooling loss in your home.

Pella offers windows and doors with advanced Low-E (Low-emissive) triple-pane insulating glass with argon that are No. 1 for energy efficiency among top national wood brands. Lowe’s also offers Pella vinyl windows and patio doors.

  • Hand-Crafted, High-Quality Wood — Pella Designer Series® 750 wood-clad windows and sliding or hinged patio doors (French doors) are up to 74% more energy-efficient. They can also help reduce your heating and cooling costs by up to 31%.
  • Low-Maintenance, Energy-Efficient — Pella® 350 Series vinyl windows and sliding-glass patio doors are a superior option. They're up to 83% more energy-efficient, saving you up to 35% on your energy costs.

Tips for Buying Energy-Efficient Windows and Doors

Choosing energy-efficient products can save families about a third on their energy costs with similar savings of greenhouse gas emissions, without sacrificing features, style or comfort. Pella windows and doors offer the energy-efficient options that will meet or exceed ENERGY STAR guidelines in all 50 states.

Here’s a quick look at some of the terms and product qualities you should look for when choosing new energy-efficient windows and doors.

NFRC (National Fenestration Ratings Council)-Certified Products —The NFRC is a nonprofit organization for the window industry that developed an energy rating system based on whole-unit product performance, not just glass.

U-Factor — The U-factor represents the rate of heat flowing out of a window or door in an hour’s time. The lower the number, the better the glass insulation. Your climate zone will affect the U-factor you choose.

Solar Heat Gain Coefficient (SHGC) — This number tells how effective the product is at blocking the sun’s radiant heat. The lower the SHGC, the less solar heat the window allows into your home. Your climate zone will affect the SHGC you choose.

Manufacturer Reports Whole Product Energy Performance — This is the best way to know how your window will perform versus only reporting performance of the center-of-the-glass values.

ENERGY STAR Program — When you see this logo on the NFRC label, you can be assured you’ve purchased a high-efficiency window or door that meets ENERGY STAR guidelines. Pella has been an ENERGY STAR partner in the United States since 1999. They also earned the highest ENERGY STAR Award — the Sustained Excellence Award for the fifth year in a row in 2011 — from the Environmental Protection Agency and the Department of Energy.

What Makes Pella Windows and Doors Energy-Efficient?

Pella windows and doors are designed with an energy-saving system that includes these high-performance features:

Wood Frames — They conduct less heat or cold into your home. In fact, wood frames insulate 1,800 times better than aluminum.

Vinyl Multichambered Frames — They reduce heat loss and are easy to care for. Pella 350 Series vinyl windows and patio doors have up to 18 insulating air chambers — three times more than typical vinyl brands.

Tight Seals — Windows and doors that don’t seal properly are drafty, affecting your comfort level and increasing your energy costs. Pella tests its products in state-of-the-art facilities to make sure they meet or exceed industry performance standards.

Quality Installation — If installed incorrectly, your windows and doors won't operate properly. Proper installation will help prevent air infiltration and even costly water damage to your home.

Tools, products, materials, techniques, building codes and local regulations change; therefore, Lowe's assumes no liability for omissions, errors or the outcome of any project. The reader must always exercise reasonable caution, follow current codes and regulations that may apply, and is urged to consult with a licensed professional if in doubt about any procedures. Please read our terms of use.