4.9 / 5 · 380+ reviews Lifetime warranty Whitby-based since 2011 Licensed & insured
★ 4.9/5 from 380+ Whitby reviews

The fixed-price way to replace windows and doors in Whitby.

Whitby Windows & Doors provides and installs custom windows, entry doors, and patio doors, backed by a lifetime warranty and a crew that never subcontracts the job to someone else. Homeowners across Whitby, Ontario, get one fixed, written number before any work begins, not a range that grows once the crew shows up.

2400 +
Windows & doors installed across Whitby
4.9 /5
From 380+ verified reviews
14 yrs
In business, still locally run
5 K
Available through Greener Homes rebates
doorsandwindowswhitby
Reply in < 1 hour Mon–Sat 8am–7pm
How we actually run a visit

The person who measures your home is the one who installs it.

A working installer, not a commissioned rep, visits your home to measure every window and door opening, answer your questions on the spot, and put a fixed price in writing, usually before the day is over.

We schedule around your life rather than the other way around, including evenings and Saturday mornings. Most homeowners compare a few quotes before choosing us, and we’re comfortable with that: it’s easier to trust a number once you’ve seen what else is out there.

4.9/5 on Google 380+ verified reviews
Lifetime Warranty Parts and labor covered
Whitby-Based Crews 14+ years in the community
WSIB & Insured $5M liability coverage
Fixed-Price Quote Honored for 90 days
The case for triple-pane glass

Your furnace works overtime because your old windows don't.

Original single and double-pane windows from decades past were never built for how cold Whitby gets or how much lake-effect wind rolls through in January. We install triple-pane, Low-E units rated for Climate Zone 5, the same standard Environment Canada assigns to this part of Ontario.

On a full-home replacement, homeowners typically save around $680 a year in heating costs alone, and federal Greener Homes rebates can return up to $5,000 more on top of that. Most people notice the difference by the first cold snap: rooms hold heat longer and the furnace cycles less often.

window installer
Save up to $680 / yr Avg. heating savings, Whitby homes

Get your free quote

We usually reply within one business hour.

    Why us

    A window company that skips the sales theater.

    Every visit starts with a measurement, not a pitch. Here's what that means for the homeowners who choose us before we ever knock on their door:

    A price that holds for three months.

    Your written quote stays valid for 90 days, so a slow decision never costs you more later.

    The same crew, start to finish.

    Every installer on your job is our own employee, trained on our standards, not a subcontractor we met last week.

    Most homes wrapped up in a day.

    Standard window and door jobs are typically finished floor-to-floor in a single visit, with debris hauled away before the crew leaves.

    Six jobs, one crew

    If it's a window or a door, we've probably already fixed one like it.

    From a single cracked pane to a full entry door swap, our in-house team handles every job without handing it off to someone else.

    What to expect, in order

    The exact order things happen in, no surprises included.

    Here's what actually happens, step by step, without extra charges tacked on halfway through.

    01

    The first visit covers everything

    One appointment, every window or door you're considering, no need to schedule separate visits for separate rooms. You receive one written number covering the whole scope, not a per-room guess.

    01

    Materials get chosen, not assigned

    You select glass type, frame finish, and hardware from physical samples, not a catalog photo. Whatever you choose gets written into your order confirmation before a single piece is cut.

    01

    We protect the house first

    Runners go down along every path our crew walks, old units get removed and bagged instead of left on your lawn, and each new opening is foam-sealed and caulked as we go rather than all at once at the end of the day.

    01

    Install day ends with a test

    Before the crew packs up, every new window and door gets opened, closed, and locked in front of you. Anything that doesn't work exactly right gets fixed on the spot, not scheduled for a follow-up visit.

    It's not just what you buy

    The best window in Ontario still fails with a bad install.

    Most warranty claims we see on other companies’ jobs trace back to the install, not the product: a frame that wasn’t shimmed level, a seal that wasn’t caulked correctly, or hardware that was never adjusted after the crew left. Materials matter, but the crew putting them in matters more.

    Every job we finish gets checked against the same list: level and square in every opening, a continuous air seal inside and out, and every lock, hinge, and roller tested before we leave. It’s the difference between a window that performs on paper and one that actually keeps your living room warm in February.

    best window installation
    Save up to $680 / yr Avg. heating savings, Whitby homes
    Front door installation
    25 yrs · warranty Frame, slab & install
    First impressions start at the door

    Your front door does more selling than any sign on the lawn.

    A front door is the one thing every visitor touches and the first thing an appraiser or a buyer notices on a showing. We install steel and fiberglass entry systems with insulated cores, multi-point locking, and glass inserts sized to match the style of your home, whether that’s a century property downtown or a newer build near Taunton North.

    Every door is fitted on site, sealed against Ontario winters, and covered for 25 years on the frame, slab, and install. Most doors are ready to take a smart lock straight out of the box.

    What you can count on

    What you’re guaranteed before we ever pick up a tool.

    We’ve built our reputation the slow way, one honest measurement and one kept promise at a time. Here’s what every Whitby homeowner can count on before we step through the door.

    CALL US ANYTIME289-892-4579

    Get your free quote

    We respond in under 1 business hour.

      In their own words

      Averaging 4.9 out of 5 across more than 380 reviews.

      Close to home, literally

      Our trucks are parked in Whitby most nights of the week.

      Most days we can have someone out to measure your windows or doors within 48 hours of your call. We also cover Brooklin, Oshawa, Ajax, Pickering, and parts of Courtice, so reach out wherever you’re located.

      • Old Whitby
      • Williamsburg
      • Blue Grass Meadows
      • Whitby Shores
      • Brooklin
      • Pringle Creek
      • Rolling Acres
      • Taunton North
      • Lynde Creek
      • Port Whitby
      Answers before you ask

      What homeowners want to know before they book.

      Don’t see your question below? Contact us. We typically reply within a business hour, often faster.

      It depends heavily on how many openings you're doing and what kind of glass you choose. A single window swap is usually the most expensive per unit, since there's a fixed labor cost no matter the size of the job. Multi-window projects bring that per-window cost down substantially once the crew is already on site. Rather than quote an average that doesn't apply to your actual home, we measure first and give you one number covering the whole project, broken out so you can see what each opening costs.
      Most standard window replacement jobs are done within one or two days. It mainly depends on how many openings are involved. A single door swap typically takes a few hours. Larger whole-home projects, or ones involving structural changes, are scoped out and scheduled with you in advance so there are no surprises.
      No part of the job is handed off. The installer who measures your home is part of the same crew that returns to do the work, and every technician is our own employee, trained on our process and covered under our insurance.
      Windows carry a lifetime warranty on glass, frame, and labor. Entry doors are covered for 25 years on the frame, slab, and installation. Both warranties stay with the home if you sell, which is something buyers and their agents tend to notice during a showing.
      In most cases, replacing an existing window or door in the same opening doesn't require a building permit in Whitby. Enlarging an opening or making structural changes usually does. We flag anything that needs a permit during your free estimate, before any work is scheduled.
      Most of our triple-pane, ENERGY STAR-rated windows qualify for the federal Greener Homes program, which can return up to $5,000 depending on the scope of your project. We can help you check eligibility and pull together the paperwork once your install is complete.

      Your written price, ready before tomorrow.

      A working installer measures your home when it’s convenient for you. Most homeowners have a fixed, honest number in hand within 24 hours, with no cost or obligation to move forward.