Get reliable door and window solutions from a trusted local contractor.
At Monocacy Service Group, we specialize in professional door and window installation, repair, and replacement throughout the Lehigh Valley. Whether you need a new entry door, storm door, interior door, or energy-efficient windows, our experienced team delivers quality workmanship that improves your home's comfort, security, and curb appeal.
We proudly serve homeowners in Allentown, Bethlehem, Easton, Nazareth, Whitehall, Bath, Northampton, and surrounding communities in the Lehigh Valley.
Call or text today for your free in-person estimate!
Why choose us
Peace of mind on every job
Free in-person estimates within 24–48 hours
Materials and techniques built for Lehigh Valley's four seasons
We protect your home and leave the job site spotless every day
No hidden fees. Honest quotes you can trust
From simple repairs to full replacements, we handle it all
We combine the personal attention of a neighborhood handyman with the professionalism and project management of a full-service contractor.
Contact us for a no-obligation, in-person assessment at your property within 24–48 hours. We listen to your goals, evaluate the scope of your door and window project, and provide a clear, written estimate — no pressure, just honest advice from your local general contractor.
Our team creates a customized plan, secures all necessary permits from local Lehigh Valley municipalities (when required), orders materials, and coordinates every trade. You stay informed with regular updates.
We complete the work with minimal disruption, daily cleanup, and respect for your home. After a thorough final walkthrough together, we make any adjustments and hand over a space you'll love — backed by our service warranty.
Monocacy Service Group proudly serves the following areas throughout the Lehigh Valley, with priority on the northern and upper Lehigh Valley towns:
We also serve surrounding communities in the greater Lehigh Valley. No matter where you are located, we're happy to discuss your project.
Most standard window or door replacements can be completed in one day. Larger projects may take 2–3 days. We always give you a clear timeline before we start.
Yes. We install high-performance, energy-efficient windows and doors designed to reduce heating and cooling costs in Lehigh Valley homes.
Absolutely. We always explore repair options first when they make sense. Many doors and windows can be restored affordably.
Yes. We handle traditional rekeying as well as modern smart lock and keypad entry installations.
Yes. All our door and window work are backed by our workmanship guarantee. We stand behind every job.
Yes. We have extensive experience working with older Lehigh Valley homes and can match existing styles or upgrade to modern, energy-efficient solutions.
We often begin smaller repair jobs within a few days of your approval. Larger replacement projects are typically scheduled within 1–2 weeks.
We can discuss flexible payment options for larger projects. Ask us during your free estimate.
Whether you need one new door, a full window replacement, or lock security upgrades, Monocacy Service Group is here to help.
Serving Allentown, Bethlehem, Easton, Nazareth, Whitehall & the entire Lehigh Valley.
Get your free, no-obligation estimate today.
Licensed • Insured • Locally Owned • Fast Response
