We only use trusted brands who provide sharp design, energy efficiency, and long-term durability.


It’s Your House.

When it comes to installation or repair for the windows and doors in your Ontario, CA home, you will want to invest in a company known for their customer service. With more than fifteen years of experience in window and door installation, Greenlite Windows & Doors is committed to creating a trusted relationship with each of our customers. Whether we’re replacing a door in the entryway or updating your entire home to include energy-efficient windows, we’ll help you choose the right product and get the job done right the first time.


It’s Our Work.

In addition to our Ontario, CA window and door installation and repair, we also provide whole house fans, blown insulation services, handyman services, and HVAC assessment and installation. You shouldn’t have to pay top dollar for mediocre work. When you choose Greenlite Windows & Doors, you can rest easy knowing you’re getting superior services at an affordable cost. Not only does our work speak for itself, but our customers reviews reflect a commitment to energy efficiency and user-friendliness.


It’s Our Pleasure.

Our mission is oldschool and sincere: to provide great window and door services to Ontario and the surrounding areas at a great price.


“Thank you Josh for a wonderful job on my kitchen window. When no one else could get the the right one, you came thru for me. Your guys were great and very friendly and you put up with my pickyness. THANK YOU!”

Sharon Atkinson

“Thank you Josh for such a great service, it was painless and my house looks beautiful”

Amanda Larson

“I called Green Lite for a quote. I had several other quotes before I had called them. There pricing was very competitive and their product was much better. My entire experience was very smooth and professional. They did an excellent job installing my windows and slider doors. I have a very clean install. They cleaned up after themselves and put everything back the way it was when they were done. I couldn’t be happier. I highly recommend them to anyone needing new windows and or sliding glass doors. You won’t be disappointed.”

Peter DiFilippo

“I used Green Lite for the replacement windows and HVAC in my home. Josh (the owner) and Co. performed excellent, professional work. Clean and thorough. Price was great, quality was more than expected. Thank you Green Lite!”

Scott Michaels

“Thank you Josh and Green-Lite Windows & Doors for the superb service provided… I love my new windows!”

Caroline Mercer

“Green Lite are very good at installing. They do quick, clean, and quality work. I would recommend them if your looking for a good/fair company for your window installation.”

Mike Kish

“Green Lite Windows has awesome customer service and a friendly staff. We would recommend them to anyone who needs doors or windows. They had the best prices around. We worked with Josh through the whole process and it was a pleasure. 🙂 Thank you Green Lite Team!!”

Cheryl Persinger

“…performed excellent, professional work. Clean and thorough. Price was reasonable, quality was more than expected. Thank you! Had a front entry door installed, with glass. Would recommend him to friends and family.”

Doug Knudson

“Very professional good prices Josh the owner was a blessing to work with got windows at a very good price will definitely be recommending to my friends and family.”

Richard Steffens

“I have been sitting here looking out my kitchen windows enjoying my spring garden. One significant difference since the last three weeks has been the NEW windows installed. The process of getting new windows took us only 3 weeks after making the decision. Our sales rep, Rodger, was knowledgeable in the products offered and clarified concerns we had. The price was fair. The install itself, and the install team, was fast and of quality work. Our five new windows are more safe and secure and will help reduce our energy use for year to come. Thank you Green-Lite Windows and Doors for a job professionally done.”

Jorge Ramirez

Ready to Talk?


When you’re looking for Ontario, CA window and door installation or repair, insulation services, HVAC assessment and installation, and other home improvements, Greenlite Windows & Doors is a great choice.