Montgomery County’s Andersen Certified Elite Contractor. Serving the Main Line, Valley Forge corridor, North Penn communities, and all 62 municipalities. 4.8 Stars — 700+ Google Reviews.
40% Off & 0% Financing Available. Plus Our Price Match Guarantee — Find a Lower Price Anywhere and We'll Match It.
Drafty rooms in winter. Rooms that won’t cool down in summer. Windows that fog up, stick, rattle, or just look tired and dated. If any of that sounds familiar, you’re not alone — and it’s exactly why homeowners across Montgomery County call us.
We’re Montgomery County’s Andersen Certified Elite Contractor for replacement windows and door installation. That designation isn’t handed out freely — it represents the highest tier of Andersen certification available, earned through factory training, installation standards, and verified performance. We’ve installed over 20,000 Andersen windows and doors across New Jersey, Pennsylvania and Delaware, and we back every single job with Andersen’s warranty plus our own installation guarantee.
Most installations are completed in just 1–2 days. And if you find a lower price anywhere else? We’ll match it. That’s our Price Match Guarantee.
There’s no shortage of window and door companies serving Montgomery County. Here’s what separates us:

Montgomery County is one of the most historically significant and economically vibrant counties in Pennsylvania — a county whose western boundary touches the ground where Washington’s Continental Army endured the winter of 1777–1778 at Valley Forge, and whose southeastern corridor contains some of the most prestigious residential addresses in the Philadelphia metropolitan area. The 3,500-acre Valley Forge National Historical Park preserves the encampment where the Continental Army — tested by cold, disease, and short supplies through six brutal months — emerged in June 1778 as a disciplined force capable of winning American independence. Washington’s Headquarters at the Isaac Potts House still stands within the park, surrounded by reconstructed soldiers’ huts and the artillery park that marks where the army held its position through that extraordinary winter. Valley Forge is not simply a local landmark — it is one of the defining sites of American history.
The Main Line — the southeastern zone of Montgomery County that takes its name from the Pennsylvania Railroad’s Main Line of Public Works — is one of the most recognizable residential corridors in America. The Pennsylvania Railroad extended its tracks westward from Philadelphia in the 19th century through what are now Ardmore, Haverford, Wayne, Berwyn, and beyond. The rail access transformed agricultural land into the estates, stone Colonials, and Tudor Revivals that still define the Main Line’s architectural character. Today the communities along Lancaster Avenue and the SEPTA Paoli/Thorndale Line — Ardmore, Merion Station, Gladwyne, Narberth, Wynnewood, Haverford, Wayne, Villanova, Rosemont — carry median home values ranging from $700,000 to well over $2 million, anchored by Bryn Mawr College, Haverford College, Villanova University, and the schools that have made the Main Line a nationally recognized address for families who prioritize education and architecture.
The North Penn corridor and suburban interior — Lansdale, North Wales, Montgomeryville, Horsham, Fort Washington, Plymouth Meeting, Blue Bell, Jenkintown, and Abington — developed as postwar suburban communities served by Route 309, Route 202, the PA Turnpike, and SEPTA regional rail with direct service to Center City Philadelphia. These communities carry primarily postwar housing stock — the 1950s through 1980s Colonials, ranches, and split-levels that are now well past their original window replacement age. We serve homeowners across both zones throughout Chester County and Delaware County as well. Every installation is a genuine Andersen product, backed by Andersen’s industry-leading warranty.
Casement Windows
The architecturally authentic choice for Main Line Tudor Revivals and premium properties throughout the southeastern county where side-hinged windows are a defining period feature.
Double Hung Windows
The most widely installed replacement window throughout the North Penn corridor’s postwar Colonials and ranches. Works across Montgomery County’s broad residential middle from Horsham to Lansdale.
Bay & Bow Windows
A sought-after upgrade throughout Montgomery County’s larger Colonials and Main Line estate homes.
Specialty Windows
Montgomery County’s older Main Line homes frequently feature non-standard openings, Pennsylvania fieldstone facade considerations, and architectural details that require precise specification. Our Andersen Certified Elite crews measure every opening.
Picture Windows
Fixed panels for maximum light in living rooms and great rooms throughout the county.
Sliding & Awning Windows
Sliding windows for aging aluminum slider replacement throughout the North Penn corridor’s postwar housing stock. Awning windows for basement and utility applications throughout the county.
We install Andersen and ProVia doors throughout Montgomery County PA. Most installations completed in a single day, backed by manufacturer warranties and our own installation guarantee. Call 610-904-9237 for service anywhere in Montgomery County.

Entry Doors — Andersen and ProVia in fiberglass, steel, and wood. For Main Line stone Colonials and Tudor Revivals, a premium wood or fiberglass entry door is the right architectural specification.
Patio Doors — French door and gliding configurations popular throughout Montgomery County’s homes with rear deck and outdoor living access.
Sliding Glass Doors — smooth, secure, and energy efficient throughout the county.
French Doors — the period-appropriate configuration for the Main Line’s Colonial and estate properties.
As Montgomery County’s Andersen Certified Elite Contractor, we install the full Andersen range. For the county’s two residential zones:
Andersen 400 Series
Our standard recommendation for the North Penn corridor’s postwar Colonials, ranches, and split-levels throughout Lansdale, North Wales, Montgomeryville, Horsham, Plymouth Meeting, Jenkintown, and Abington. Exceptional durability, energy performance, and design flexibility.
Andersen A-Series
Architect-grade performance for the Main Line’s premium properties and estate homes in Ardmore, Merion Station, Gladwyne, Wayne, Haverford, and Villanova. Complete customization, precise sizing, and the highest level of Andersen quality for homes where that standard is expected.
Andersen 200 Series
Wood interior with easy-care exterior. For Montgomery County’s older Main Line homes where a real wood interior paintable to match existing trim and millwork preserves the home’s period character.
Andersen 100 Series
Fibrex composite. Low maintenance, energy efficient, genuine Andersen quality. A strong choice for North Penn corridor homeowners who want certified Andersen performance with minimal ongoing maintenance.
Andersen E-Series
Maximum design flexibility for Montgomery County’s restoration and renovation applications.
Our free in-home consultation includes a specific recommendation for your Montgomery County home’s zone, age, and style. No pressure, no obligation. Compare the Andersen 100 Series vs the 400 Series here.
We serve all 62 municipalities in Montgomery County, Pennsylvania across both residential zones. Call 610-904-9237 to confirm service availability for your address.
Ardmore — Main Line anchor community. Full service coverage.
Merion Station — premium Main Line community. Full service coverage.
Gladwyne — one of the most affluent communities in the Philadelphia area. Full service coverage.
Narberth — Main Line borough. Full service coverage.
Wynnewood — Main Line community. Full service coverage.
Haverford — home of Haverford College. Full service coverage.
Wayne — major Main Line community. Full service coverage.
Villanova — home of Villanova University. Full service coverage.
Rosemont — adjacent to Bryn Mawr. Full service coverage.
Plymouth Meeting — major suburban community. Full service coverage.
Blue Bell — Whitpain Township. Full service coverage.
Fort Washington — established suburban community. Full service coverage.
Horsham — significant suburban population. Full service coverage.
Lansdale — North Penn Borough. Full service coverage.
North Wales — North Penn corridor. Full service coverage.
Montgomeryville — North Penn commercial corridor. Full service coverage.
Jenkintown — established borough, SEPTA rail access. Full service coverage.
Abington — major suburban township. Full service coverage.
Wyndmoor, Maple Glen, Bryn Athyn, Elkins Park, Hatboro, Ambler, Cheltenham — and all 62 municipalities. Don’t see your community? Call 610-904-9237.
Valley Forge area communities — Upper Merion Township and surrounding communities near Valley Forge National Historical Park. Full service coverage throughout.
Montgomery County borders Chester County to the west and Delaware County to the south. We serve homeowners across all three counties.
“Michael S from acre windows did a great job explaining all the options available and made us feel very comfortable with decision to go with them. He spent extra time to wait for my brother to come and provide the info.”
— Sheryline I., Montgomery County PA
“Matt called us on Tuesday with a great deal. Ryman came out to see us on Wednesday and went over the promotion Acre Window and Doors is running. They all did such a great job in September (see Horsham review), that we are now replacing our kitchen windows in Spring 2024. We are thrilled to have them back to do the installation. These people know what they’re doing.”
— Karen R., Montgomery County PA
“We LOVE our new door! Big Mike was the best. He measured and measured and adjusted and re-adjusted until I got tired of watching, but the door was perfect. On top of that, installation with laughs made the day. Wish we could afford windows, just to get more laughs. Thanks Acre!”
— Holly S., Montgomery County PA
“The whole experience with Acre Window & Doors from the first time the sales person came to give me the estimate to the follow up of the measurements to the install along the install team of Mike & Kenny were Terrific.
Was a pleasure to deal with from the beginning to the end and Acre Windows & Door will be back to install other windows”
— Paul D., Montgomery County PA
Andersen Certified Elite Contractor is the highest tier of installer certification awarded by Andersen Windows & Doors. It requires factory training, verified installation quality standards, and a proven track record of performance. Very few window installation companies serving Montgomery County hold this designation — it separates genuine Andersen specialists from general contractors who happen to sell Andersen products.
For Main Line properties — the stone Colonials, Tudor Revivals, and estate homes of Ardmore, Merion Station, Wayne, Haverford, and Gladwyne — we typically recommend the Andersen A-Series for its architect-grade performance, complete customization, and full sizing range for non-standard architectural applications. For older Main Line homes where wood interior character matters, the 200 Series provides a real wood interior matching existing trim. For the North Penn corridor’s postwar Colonials and ranches throughout Lansdale, Plymouth Meeting, Horsham, and Blue Bell, the 400 Series is our standard recommendation. Our free in-home consultation confirms the right product for your home.
Most Montgomery County homeowners invest between $850 and $2,000 per window installed — including product, labor, and cleanup. The range reflects the county’s housing diversity: a North Penn corridor ranch runs differently than an A-Series installation in a Gladwyne estate. We offer 0% financing and our Price Match Guarantee means you won’t find a better price for the same Andersen product from a certified installer anywhere in Montgomery County.
Yes. Montgomery County’s older Main Line homes — many featuring Pennsylvania fieldstone construction, non-standard window openings, and period architectural details — present specific installation considerations that our Andersen Certified Elite crews are experienced with. We are EPA Lead Safe certified, required for work in pre-1978 homes where lead-based paint may be present.
Most window replacement projects in Montgomery County are completed in 1–2 days. Larger Main Line estate homes may require two full days. We provide a specific timeline at your free in-home consultation after measuring every opening. Call 610-904-9237 to schedule.
Yes. 0% financing for qualified Montgomery County homeowners. Combined with our 40% off promotion and Price Match Guarantee, this makes premium Andersen windows accessible for most budgets across both the Main Line and North Penn corridor.
Yes — two layers of warranty protection. Andersen’s manufacturer warranty covers the product. Our own installation warranty covers labor and workmanship. Montgomery County homeowners have comprehensive protection on both the product and the installation. We serve all 62 municipalities — from the Main Line communities in the southeast to Lansdale and North Wales in the north. Call 610-904-9237 to confirm service availability for your address.
No pressure. No obligation. An honest assessment of your windows, a specific product recommendation for your Montgomery County home, and a guaranteed best price. Available 7 days a week across all of Montgomery County. Call 610-904-9237.
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