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Trusted Allentown window installers, free in-home quotes, licensed & insured pros, workmanship warranty.
Allentown's centre is built from brick rowhouses, and that changes a window job in ways a detached-house quote does not cover. Party walls mean your only exposed elevations are the front and the back, so almost all of your heat loss and almost all of your glass sits on two faces of the building. Get those right and you have addressed most of the problem in a Lehigh Valley winter that drops to 22 degrees.
Old Allentown and the West End hold the oldest rowhouse and Victorian stock, and the South Side and Rittersville are the same era of working housing built through the industrial decades when the Lehigh Valley ran on steel and manufacturing. Many still have original wood sash. This is an affordable market, so a full replacement is a meaningful share of the property value.
Licensed, background-checked crews, and they cut frames out of brick without damaging the lintel.
Fixed written pricing, and a rowhouse often needs fewer units than owners expect.
We file with the Allentown building standards and safety staff and meet the Pennsylvania UCC.
Our labor is warranted for life, and the manufacturer warranty backs glass and hardware.
Every style, built for Allentown's climate.
Two sashes that slide up and down, the correct profile for an Old Allentown brick rowhouse.
Cranks outward on a side hinge and seals hard against a Lehigh Valley winter.
Glides horizontally on a track, a practical fit for a rear yard elevation.
One large fixed pane, the best-insulated unit and a good choice on a rowhouse front room.
Multi-panel windows that project outward, a period feature on the West End houses.
Awnings vent from the top in a storm, and garden windows add a bright shelf for plants.
For Allentown's cold climate we most often install vinyl or fiberglass frames with high-solar-gain Low-E 180 glass.
Get a free, no-pressure recommendation for your Allentown home, any style, any material.
From one failing window to every opening in the building, we serve homeowners and property owners across Allentown and the Lehigh Valley.

Single-family homes, brick rowhouses, Victorians and colonials through the West End, Old Allentown, Rittersville, the South Side and the East Side. We measure, file the permit with the Allentown building standards and safety staff, install, and clean up behind us.

Offices, downtown retail, former industrial buildings, multi-family portfolios and HOA properties. We install code-compliant glazing, work around your hours, and price larger unit counts as a package.
Residential or commercial, most Allentown property types qualify. No deposit, no pressure.
Licensed & insured · Lifetime workmanship warranty · Reply in 1 business hour
Allentown sits in climate zone 5A in the Lehigh Valley, cold snowy winters and warm humid summers with a long heating season. Insulation and air sealing carry the job, concentrated on two elevations. This is the assembly we install on Allentown homes:
| Spec | Recommended for Allentown | Why |
|---|---|---|
| Glass coating | high-solar-gain Low-E 180 | maximum winter insulation + solar gain |
| Frame material | Vinyl or fiberglass | harsh winters near 22°F, no warping, tight seal |
| Gas fill | Argon | argon (krypton optional) for deep-winter insulation |
| U-factor target | ≤ 0.27 | exceeds the Pennsylvania energy code requirement for zone 5A |
| SHGC target | higher = better | captures free solar heat (no code cap in cold zones) |
The rowhouse geometry works in your favour. With party walls on both sides, replacing the front and rear glass addresses nearly all of the building's window heat loss, which makes a full job cheaper here than on a detached house of the same floor area. A high-solar-gain Low-E 180 coating at a U-factor of 0.27 or lower is the right specification, and Pennsylvania power at about 16 cents a kilowatt-hour keeps the payback sensible.
Window installation in Allentown generally runs $450 to $800 per installed window, or $8,000 to $16,000 for a full home, among the most affordable pricing we offer. A rowhouse often needs fewer units than a detached house of similar size, which brings the total down. Upper-floor front openings on a street with no setback need staging, and we price that up front. With local home values near $260,000, we quote it fixed and itemized.
Get a free, no-pressure in-home quote today, licensed, insured, and backed by the installer's lifetime workmanship warranty.

We measure every opening on site, and on a rowhouse we count front and rear only.

Your sash is built to that exact opening, sized to seat properly against a brick lintel.

Most Allentown homes install in a day, and street-front upper floors get staged properly.

We clean up, carry the old sash out, and register your warranty before we leave.
Allentown requires a building permit for window replacement, issued by the City of Allentown building standards and safety staff. Review is closer if you change an opening size, alter a bedroom window that has to satisfy egress rules, or modify a structural header, and in a load-bearing brick rowhouse wall the lintel above an opening is a genuine structural element rather than trim. Your windows also have to meet the Pennsylvania Uniform Construction Code, which adopts the IECC and in climate zone 5 sets the maximum fenestration U-factor. The units we install come in at 0.27 or better. Your installer handles the filing and the inspection.
"They matched our older home's window style in West End perfectly. Craftsmanship is real."
"Street noise in Old Allentown is cut way down. Didn't expect that bonus."
"Crew showed up on time, handled the Allentown paperwork, and left the place clean."
Recent project: Full-home replacement in West End, 18 high-solar-gain Low-E 180 windows.
See what your project would cost, free, no-obligation in-home quote.
ZIP codes served: 18101, 18102, 18103, 18104, 18109
Yes. The City of Allentown building standards and safety staff issue the permit for window replacement. Your installer files it, meets the Pennsylvania Uniform Construction Code, and schedules the inspection.
For zone 5A Lehigh Valley conditions, we recommend high-solar-gain Low-E 180 glass with argon fill in vinyl or fiberglass frames at a U-factor of 0.27 or lower, so winter sun helps rather than being rejected.
Most Allentown jobs run $450 to $800 per installed window, or $8,000 to $16,000 for a full home. A rowhouse often needs fewer units than a detached house of similar size, which lowers the total.
Pennsylvania power runs about 20.8 cents per kilowatt-hour. On a typical Allentown home, efficient windows save about $568 a year on the ENERGY STAR published figure for this climate zone, or about $282 if you are replacing older double pane.
Two things. Your glass is concentrated on the front and rear only, because party walls take the sides, so a full job covers fewer openings and costs less than a detached house of the same size. Second, the brick lintel above each opening is structural, so resizing an opening is a real engineering question rather than a trim change.
Yes. Every installer we match you with is licensed, bonded and insured in Pennsylvania, and their work carries a lifetime workmanship warranty from your installer alongside the manufacturer's warranty on the windows. We arrange your quote and the introduction; your installation contract is with the installer who does the work.
Free, no-pressure in-home estimate. No deposit to book. Satisfaction guaranteed.