Energy-Efficient Windows for PA & NJ Homes

We install OKNA windows — manufactured in Bristol, PA, 20 minutes from our office. Factory-trained crews, lifetime transferable warranty.

One Manufacturer, One Crew, One Guarantee

OKNA builds the window; our own crews measure and install it. No middlemen between the factory floor and your wall opening.

Window Replacement Services

Window replacement with modern, energy-efficient models and a quality guarantee.

1–2 Day Installation

Most homes are completed in one to two days — measured, installed, sealed, and cleaned up.

Two Layers of Protection

Lifetime transferable manufacturer warranty on every OKNA window, plus our written 10-year workmanship guarantee on installation.

Free On-Site Estimates

Itemized quote after in-home measurement — window count, labor, and disposal listed separately. No hidden fees.

Explore Our Range of Window Styles

Four window styles we install most across PA and NJ homes — each with different ventilation, sightline, and energy performance characteristics.

Double-Hung Windows

Both sashes tilt in for cleaning from inside — no ladder needed. The most practical choice for two-story colonials and split-levels.

Casement Windows

Crank-open design seals against the frame like a refrigerator door, giving the tightest air seal of any operable window style.

Bay & Bow Windows

Project outward to add interior space and panoramic light. We reinforce the seat board and insulate the head and knee walls during install.

Energy-Efficient Windows

Double- or triple-pane glass with Low-E coating and argon fill. Typical heating and cooling savings of 12–18% versus single-pane units.

Why Choose Us?

Family-run exterior remodeling contractor serving PA & NJ since 1991 — factory-trained window installers, not subcontractors.

Installing Windows Since 1991

Over 250,000 windows installed across Greater Philadelphia, South Jersey, and the Poconos. Our own crews handle every project — no subcontractors.

Lifetime Transferable Warranty

Windows carry a lifetime manufacturer warranty that transfers with the home. Installation labor is backed by our 10-year workmanship guarantee.

ENERGY STAR® Rated Windows

Double- and triple-pane Low-E glass with argon fill, rated for our Climate Zone 4A. Typical heating and cooling savings: 12–18%.

Licensed in PA & NJ, Fully Insured

PA HIC #187000 and NJ #13VH13150900. Every installation is permitted where required and meets IECC energy code.

Examples of Completed Projects

Recent window installations across Bucks County, Philadelphia, and South Jersey — from single-window swaps to whole-house replacements.

Before and after window replacement on a 1960s ranch home in Jamison Park, Warwick Township PA — OKNA double-hung vinyl windows installed by Monarch Contractors

Before and after window replacement on an early-1900s brick rowhome in Pennsauken, NJ — original wood double-hungs replaced with OKNA double-hung uPVC vinyl windows by Monarch Contractors

Before and after window replacement on a Sturbridge Lakes Colonial in Voorhees, NJ — original double-pane units replaced with OKNA double-hung uPVC vinyl windows by Monarch Contractors

Before and after window replacement on a 1970s split-level home in Lindenwold, NJ — original aluminum-frame double-hungs replaced with OKNA double-hung uPVC vinyl windows by Monarch Contractors

Before and after window replacement on a 1953 Cape Cod in Custis Woods, Oreland PA — OKNA double-hung vinyl windows installed by Monarch Contractors

Before and after window replacement on a 1915 streetcar-era home in Highland Park, Morrisville Borough PA — OKNA double-hung vinyl windows installed by Monarch Contractors

Before and after window replacement on a 1940s Cape Cod in York Gardens, Hatboro Borough PA — OKNA double-hung vinyl windows installed by Monarch Contractors

Before and after window replacement on a mid-century riverfront home in Cinnaminson, NJ — original aluminum-frame double-hungs replaced with OKNA double-hung uPVC vinyl windows with flood-resistant flashing by Monarch Contractors

Before and after window replacement on a 1950s Heritage Village ranch in Marlton, NJ — original aluminum-frame double-hungs replaced with OKNA double-hung uPVC vinyl windows by Monarch Contractors

Before and after window replacement on a 1990s detached home in Scotrun, PA — original double-pane units replaced with OKNA double-hung uPVC vinyl windows by Monarch Contractors

Before and after window replacement on a 1928 Colonial near Myers Elementary in Elkins Park PA — OKNA double-hung vinyl windows installed by Monarch Contractors

Before and after window replacement on a 1985 single-family in Dublin Hunt subdivision, Dublin Borough PA — OKNA double-hung vinyl windows installed by Monarch Contractors

Before and after window replacement on a 1928 Spanish Revival home in the Hollywood neighborhood, Jenkintown PA — OKNA arched and casement vinyl windows installed by Monarch Contractors

Get a Precision Quote for Your Window Installation

Enter your phone number and we’ll schedule a free in-home measurement — you’ll get an itemized quote, not a ballpark.

Have questions?

We value your time, which is why we will contact you within 4 hours after you complete this form!

We are always available

Do you have questions, need details, or just want to share your thoughts? We are always here, ready to listen and help. We also have a referral program! Contact us to learn more details.

Contacts

+1(888) 990-7177
monarchcontractors@mail.com

Location

501 Cambria Avenue Bensalem, PA 19020

Work Schedule

Mon-Fri: 7 am to 5 pm
Sat-Sun: Closed