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Window Installation & Replacement in Kent, Washington

Trusted Kent window installers, free in-home quotes, licensed & insured pros, workmanship warranty.

4.9 (327 reviews) Licensed & Insured 15 yrs Serving Kent, Renton, Auburn, Federal Way & Tukwila

Free Kent Window Quote

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4.9★
327 Google Reviews
15+
Years Experience
12,000+
Windows Installed
Lifetime
Workmanship Warranty
0%
Financing Available
Licensed • Bonded • Insured
Energy Star Certified
A+ BBB Rated
Certified Installers
Financing Available
Kent, WA Window Experts

Kent's Window Installation Specialists

Rot and condensation drive most of the window replacement work in Kent. Winters here run long, gray, and soaking wet, with weeks of rain that keep every surface damp and lows sitting near 36 degrees. Summers stay mild and dry, topping out around 78, so cooling is barely part of the conversation. The real test for a window in Kent is whether it sheds water and keeps the glass warm enough to stop sweating.

Most of Kent went up between the 1960s and the 1980s. You see split-levels and ranches spread across East Hill, Meridian, and the West Hill, with newer townhomes and apartments filling in the valley near Kent Station and Panther Lake. Plenty of those homes still carry original aluminum or wood sash. That shows up as cold drafts, black mildew in the corners, water pooling on the sill, and frames that have gone soft where the rain sat for forty winters. New windows take care of all of it.

Why Kent Chooses Us

The Window Team Kent Trusts

Vetted local crews, never day labor

Licensed, trained, background-checked installers do the work. You never get a crew we handed off the night before.

Upfront written pricing

Quotes are itemized in writing, including any sill or trim repair we find, and the number does not move on install day.

Your installer handles any Kent permits

If your job needs one, we file it with the City of Kent Permit Center and carry it through inspection and energy code sign-off.

Lifetime workmanship warranty

If the workmanship ever fails, your installer comes back and correct it at no charge, and the units themselves carry manufacturer warranties.

Window installer fitting a new window in a Kent home
Products

Window Types We Install in Kent

Every style, built for Kent's climate.

Double-hung windows installed on a Kent home

Double-Hung

Two sashes that ride up and down, the natural fit for East Hill ranches and split-levels, and simple to clean.

Casement window being opened in a Kent home

Casement

Hinged at the side and cranked open, giving you strong airflow and one of the tightest seals against wind-driven rain.

Sliding window and glass door in a bright Kent room

Sliding

Runs sideways on a track, a clean answer for the wide openings in valley townhomes and newer apartments.

Large picture windows in a bright Kent living room

Picture & Fixed

One big sealed pane that pulls in every bit of daylight during a long gray Kent winter.

Bay window in a Kent home

Bay & Bow

Multi-panel units that step out from the wall, adding a seat, storage, and street presence.

Garden window with a flower box on a Kent home

Awning & Garden

Awnings hinge at the top so you can vent during a downpour, and garden windows give herbs a bright shelf.

Available in: Vinyl · Fiberglass · Aluminum · Wood-clad · Composite, and virtually any other window material, all rated for Kent's climate.

For Kent's cool marine climate we most often install vinyl or fiberglass frames with Low-E 180 (high-insulation) glass.

Not sure which window is right for your home?

Get a free, no-pressure recommendation for your Kent home, any style, any material.

Residential & Commercial

Who We Serve in Kent

One sweating bedroom window or an entire building, we work with homeowners, landlords, and property managers across Kent and South King County.

Residential home in Kent, WA with new windows

Residential

We fit split-levels, ranches, townhomes, condos, and newer valley apartments from East Hill to Panther Lake. We measure, clear any permit with the City of Kent Permit Center, install, and clean up.

Commercial storefront window installation in Kent, WA

Commercial

We glaze offices, retail storefronts, multi-family buildings, and HOA properties, including warehouse and light-industrial space across the Kent Valley. Everything meets current code, work is scheduled around your operating hours, and larger orders get bulk pricing.

Get Your Free Kent Window Quote

Residential or commercial, most Kent property types qualify. No deposit, no pressure.

Licensed & insured · Lifetime workmanship warranty · Reply in 1 business hour

Built for Kent

The Best Windows for Kent's Climate

Kent sits in climate zone 4C, the cool marine zone. Insulation and moisture control matter far more here than blocking summer sun, so the glass package is built to hold heat and keep the interior surface warm. Here is the setup we install on Kent homes:

SpecRecommended for KentWhy
Glass coatingLow-E 180 (high-insulation)insulates through long, damp winters
Frame materialVinyl or fiberglasswet marine climate, no rot, tight seal
Gas fillArgonwarmer glass surface = less condensation
U-factor target≤ 0.28exceeds the Washington energy code requirement for zone 4C
SHGC target0.30–0.40captures scarce winter sun

In a wet marine winter, U-factor does the heavy lifting. A lower U-factor keeps the inside face of the glass warmer, and warm glass does not sweat, which is how you stop the mildew and the rot that eat old sash. Residential power in Washington averages about 14 cents per kilowatt-hour, cheap by national standards, so the dollar savings here are smaller than in a place with brutal summers or hard freezes. The payoff you feel is a drier, warmer, quieter house through eight months of rain.

Transparent Pricing

Window Installation Cost in Kent

Window installation in Kent generally runs $470 to $810 per installed window, or $8,500 to $16,500 for a full home. Pricing here sits below the high end of the region, which fits a market built around affordability. Split-levels and ranches from the 1960s and 1970s often need sill or trim repair once the old unit comes out, and we price that separately instead of springing it on you mid-job. With local home values near $570,000, replacing failed windows protects the structure as much as the comfort. You get a fixed written price before anything is ordered.

  • Financing from low monthly payments, 0% options available
  • Free, no-obligation in-home quote, no deposit to book
  • Washington utility & energy rebates, Kent homeowners may qualify. DSIRE lists every Washington program by utility, so you can check your own provider. See Washington rebate programs
  • Save about $568/yr on energy (ENERGY STAR average for this climate zone)

Ready for Better Windows in Kent?

Get a free, no-pressure in-home quote today, licensed, insured, and backed by the installer's lifetime workmanship warranty.

Simple & Transparent

How Window Installation Works in Kent

Free in-home window quote in Kent
1

Free Quote

A tech measures every opening at your house and hands you a written price, line by line.

Custom window manufacturing
2

Custom Order

Each window is built to your exact opening, which matters on out-of-square 1970s frames.

Professional window installation in Kent
3

Install

Crews wrap most homes in a single day, and your installer files the Kent permit before we start.

Final walkthrough and warranty
4

Walkthrough

We vacuum up, haul the old sash away, and register your warranty before we leave.

Local Code

Window Permits & Energy Code in Kent

Kent is stricter than some cities on this. The city lists altering a window among the residential work that needs a building permit, so plan on filing with the City of Kent Permit Center instead of assuming your swap is exempt. Resizing an opening or touching a header adds a structural review, and bedroom windows still have to meet emergency escape and rescue sizing. Washington also writes its own energy code rather than adopting the plain IECC. The 2021 Washington State Energy Code, Residential Provisions cap vertical fenestration in marine zone 4C, tighter than the national baseline. Your installer pulls the permit, meets the inspector, and handles code compliance for you.

Don't Just Take It From Us

What Kent Homeowners Say

★★★★★

"Honest quote, no pressure, and our whole Kent Station house was done in a day. Spotless cleanup."

HN H. Nguyen, Kent Station
★★★★★

"Energy bill dropped noticeably after they replaced our worst windows in East Hill."

SP S. Patel, East Hill
★★★★★

"They matched our older home's window style in Panther Lake perfectly. Craftsmanship is real."

RC R. Cole, Panther Lake
4.9 from 327 Google reviews

Recent project: Full-home replacement in Kent Station, 18 Low-E 180 (high-insulation) windows.

Join 12,000+ Happy Kent Homeowners

See what your project would cost, free, no-obligation in-home quote.

Proudly Serving

Window Installation Areas We Serve Near Kent

Nearby cities we serve

Renton Auburn Federal Way Tukwila

Kent neighborhoods we serve

ZIP codes served: 98030, 98031, 98032, 98042, 98058

Good to Know

Kent Window Installation FAQ

Do I need a permit to replace windows in Kent?

Usually yes. The City of Kent Permit Center lists altering a window among the residential work that requires a building permit, and a permit is definitely required if you resize the opening, change a header, or alter a bedroom window that has to meet egress sizing. Your installer files it and sees it through inspection.

What windows are best for Kent's climate?

For Kent's cool marine zone 4C climate, we recommend Low-E 180 high-insulation glass in vinyl or fiberglass frames, targeting a U-factor of 0.28 or lower. Vinyl and fiberglass also refuse to rot, which is the reason so many original wood frames in Kent are failing.

How much does window installation cost in Kent?

Most Kent jobs run $470 to $810 per installed window, or $8,500 to $16,500 for a full home. Older split-levels and ranches can run a little higher if the sill or trim underneath has soaked through and needs repair.

How much can new windows save me in Kent?

Residential power in Washington averages about 14 cents per kilowatt-hour, which is low for the country, so honest savings here are modest next to an extreme climate. The bigger return is comfort through a long wet winter, less condensation, and no more rot repair bills.

Will new windows stop the condensation, mold, and rotting frames in my Kent home?

In most cases, yes. Damp marine winters chill single-pane and old aluminum glass until it sweats, and that water feeds mildew and rots the wood underneath. Modern double-pane Low-E units keep the interior glass warmer so the moisture stays in the air, and vinyl or fiberglass frames cannot rot at all.

Are the installers licensed and insured in Washington?

Yes. Every installer we match you with is licensed, bonded and insured in Washington, 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.

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