Lancaster: 717-733-0321

Reading: 610-898-7149

Harrisburg: 717-635-7999

Replacement Windows & Installation in Lancaster, PA
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Client Testimonials

"You can tell that Zimmerman Exteriors really care about their customers because of the great quality of work that they do. They are very easy to work with, are understanding, and friendly. We would highly recommend them.---Thanks for everything"..."
Kyle and Carrie McCarty – Ephrata,PA

"When the solar company pushed forward the panel installation date by a month I needed a new roof in a hurry. Zimmerman Exteriors got the job scheduled and completed within two weeks at a price $1000.00 less than I expected."
Doug Grove - Mt. Joy, PA

Replacement Windows & Doors for Lancaster, PA

Energy Star

At Zimmerman Exteriors we install energy-efficient windows and doors to help you save on your heating and cooling expenses. We can guide you through the buying process to help you chose the right windows or door for your application. Like our roofs and cedar shingle repairs, all of our windows and doors have superior quality as well. Not only will you see a reduction in your energy bills, but new windows or doors will reduce noise and help make your home comfortable and attractive. Everything included, with no hidden fees. We provide replacement window and door services in Lancaster, PA and surrounding areas.


You may not realize it, but your windows play a huge factor in your monthly heating and energy bills. Having energy-efficient windows can drastically improve your house's insulation, saving you money and keeping your home at a comfortable temperature. Plus, energy-efficient windows are made with a special coating that protects against the sun's UV rays, keeping your furniture, floors, carpets, etc. from fading or getting damaged. Some municipalities will even offer you tax credit for making the upgrade!

Some of the window brands we carry include:

Andersen  Viwinco       Simonton       Pella Windows       Harvey Windows


Doors are the main facet that affect the look of your home entrance. If you want to change how you feel when you walk in your house then install a quality door with Zimmerman Exteriors. Curb appeal is a major factor when selling your home, a new front door adds to the value of your home.

Some of the door brands we carry include:

Andersen        Pella Windows       Therma Tru