Bay window with new white units installed by 4M

Replacement windows in Toronto

Casement, slider, hung, picture and basement windows, made to measure and installed by our own crew. From $600 per window, installed. Free measure.

4.9 on Google from 25 reviews

Book a free measure

Free and with no obligation. We call you back to set a time, Monday to Saturday.

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  • 4.9 on Google from 25 reviews
  • Licensed, WSIB and liability insured
  • 15-year written installation warranty
  • Free in-home measure
  • Our own crew, no subcontractors
  • Old units removed and hauled away
  • Canadian-made windows
  • Supply and install, or supply only

Which window fits each room

Every window we install is made to measure for its opening. The type decides how it opens: casement and awning windows crank outward, sliders open sideways, hung windows move up and down, and picture windows stay closed and give the widest view. A small, medium or large window of any of these types starts at $600, $950 or $1,450 installed.

Double or triple glazing

Every window comes with an insulated glass unit. Double glazing is the standard choice for most homes. Triple glazing adds a third pane for a warmer surface on cold days and a quieter room, and it is priced by configuration. ENERGY STAR® certified windows are available; ask us which models fit the current Ontario rebate programs.

More on this in energy-efficient windows.

What every installation includes

  • Old units taken out
  • Haul-away of everything we remove
  • New unit installed and sealed by our crew
  • Exterior capping
  • Interior casing

Brick, stucco, a larger opening, new siding, soffit or decorative trim boxes are priced separately after we see them.

Window prices

The same starting price applies to casement, slider, hung and picture windows of the same size. Order windows together with a door and save up to 50% on the installation.

Starting prices with installation, before HST
Window or doorInstalled
Window, small (casement, slider, hung or picture)from $600
Window, mediumfrom $950
Window, largefrom $1,450
Basement and egress windowsafter the measure

Prices updated November 2026, before HST. Your written quote is based on the free measure.

Get a free quote

No middlemen involved, so the price was really fair.

Alona H., Google review

What clients say about their new windows

4.9 on Google from 25 reviews. These are quoted word for word.

  • ★★★★★

    We replaced 12 windows and 1 sliding door in my parents’ house in Oakville based on a neighbor’s recommendation. Thanks to Max for the careful and meticulous work with the interior wood trim.

    Андрій К.12 windows and a sliding door, Oakville, Google review
  • ★★★★★

    From the very first consultation to the final installation, Arthur showcased professionalism, responsiveness, and a keen eye for detail. The installation was executed flawlessly and on time.

    Bob N.Installation, Google review
Read all 25 reviews on Google

From your call to new windows

Five steps, with the price fixed in writing before anything is ordered.

  1. Call or send a requestTell us how many windows and where you live.
  2. Free measureWe measure every opening and show you the options.
  3. Written quoteA 30% deposit when you order, the rest after the work.
  4. Made to order4 to 10 weeks, depending on glass and options.
  5. InstalledUsually one day, two at most. Old windows leave with us.

Warranty in writing, for the next owner too

Every warranty comes on paper. If you sell the house, it goes to the new owner.

  • 25yearson windows, from the manufacturer
  • 15yearson our installation, from 4M

Questions about replacement windows

Installed and before HST, a small window starts at $600, a medium one at $950 and a large one at $1,450. The price is the same for casement, slider, hung and picture windows of the same size. Basement windows are priced after the free measure.

The windows are made to order in 4 to 10 weeks. The installation usually takes one day, two at most.

Yes. Triple glazing is priced by configuration, and we show you the difference in your written quote.

Yes. Taking out the old windows and hauling them away is part of the standard replacement price.

Yes, when the weather allows it.

25 years from the manufacturer on the windows and 15 years from 4M on the installation, in writing and transferable to the next owner.

Ready for a free measure?

Leave your number and city. We call you back to book a time.

(647) 992-5818
info@4mwindowsdoors.ca

Mon to Fri 8 am to 7 pm, Sat 8 am to 5 pm, Sun closed

We use your details only to answer this request. Privacy Policy.