With ProVia windows, you come out ahead. Your real comfort comes when you discover just how well your new windows keep unwanted heat and cold out of your home. Endure window components are inventively designed, and come together to create one of the most energy efficient windows on the market today.

The frame and sash construction exceed industry standards, and are tested against the most stringent requirements for air and water infiltration, wind load resistance, ease of operation, forced entry and much more.

We can stop those wasteful drafts

When you feel air moving through your window, you know you’re not only wasting energy, you are losing hard-earned money. Endure windows maximize reduction of air infiltration with triple weatherstripping.

True maintenance freedom

Stop Wastful Drafts

Performance at ProVia goes beyond superior energy efficiency. Endure windows are also designed to require very little maintenance. The Sunshield® vinyl in the frame and sash resists chipping, cracking, peeling, pitting or blistering.

Up, down, tilt and slide with ease

Stop Wastful Drafts

Endure’s Compound Tension™ balance system guarantees a quiet and smooth operation with minimal effort. Our unique DualTech™ hardware allows you to unlock and tilt the sash with ease. Friction-resistant rollers allow the Endure series Slider Window to be easy to operate or remove.

ENERGY STAR® - NFRC Label - What You Need to Know

Stop Wastful Drafts
  1. U-Factor – Insulating value of the entire window system. Lower numbers reflect better insulating value.
  2. Solar Heat Gain Coefficient (SHGC) – Amount of heat from the sun passing through the glass. Lower numbers show glass is keeping heat from entering your home.
  3. Visible Transmittance – Amount of visible light passing through the glass. Higher numbers show glass is allowing more light to enter your home.
  4. Air Infiltration – How much air is entering or escaping through the window. Lower numbers show air is kept from entering or escaping.
  5. Condensation Resistance – Amount of moisture it takes for glass to condensate when exposed to extreme interior and exterior temperature changes. Higher numbers show better resistance to condensation.
Stop Wastful Drafts