Construction holiday from July 19 to August 1 — we are only handling ongoing projects and emergencies. New requests are logged and we call back when we return.
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Summer comfort

Koomfo

Window air conditioner rental and installation: stay cool all summer, installed solidly, at a posted flat rate.

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Koomfo

Koomfo: summer comfort — window air conditioner rentals and installation

Koomfo is our division dedicated to a single mission: keeping your home cool during the big heat waves. We handle both the rental and the installation of window air conditioners. You can rent a unit for the season without having to buy it, store it or deal with it over the winter, or simply have us install the air conditioner you already own. Either way, we show up with the gear, set the unit up securely in your window, and head out leaving you with total peace of mind. Your summer, nice and cool.

A window air conditioner isn't just about "dropping it into the frame." A poorly installed unit can fall, damage your window, let in hot air, rain or bugs, and can even become a falling hazard when it's set up high. Our technicians know how to mount the unit stably and safely, tilt it correctly for water drainage, and seal up the surrounding area properly so you enjoy all that cool air without wasting energy. No risky reaching out a second-floor window: we take care of it the right way.

Like everything at Beau-frère à louer, you're working with an insured, RBQ-licensed team, and every installation is done with care. The price is fixed and shown upfront: you know what it costs before we start, with no surprises on the bill. You book online or request your quote, we confirm the rate, and you're all set.

This division’s services

What we do for you

Air Conditioner Rental & InstallationFixed price

Air Conditioner Rental & Installation

Already have an AC or want to rent one for the summer? We deliver, install, and uninstall at the end of the season — you just enjoy the cool air, stress-free.

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Frequently asked questions

What people often ask us

What's the difference between renting and buying a window air conditioner?

By renting with Koomfo, you've got nothing to deal with — no purchase, no storage, no maintenance: we deliver the unit, install it, and come pick it up in the fall. Buying your own air conditioner can pay off over the long run, but it means finding space to store it six months a year and handling the installation yourself. Renting is ideal if you want cool air without the hassle, especially in an apartment.

Do you install my own air conditioner?

Yes. If you already have your own window air conditioner, we come out to install it securely and safely. It's perfect if you're not comfortable handling it yourself, especially for a high window or a heavy unit. We take care of the mounting, the tilt for water drainage, and sealing the surrounding area.

What size of air conditioner should I choose?

It depends on the size of the room you want to cool and how much sun it gets: a unit that's too small will run constantly without ever keeping up, while one that's too big will waste energy. If you rent from us, we'll recommend the right size for your room. If you're supplying your own unit, give us your window dimensions and a sense of the room, and we'll let you know if the installation is doable.

Is it solid and safe in the window?

Yes — that's exactly the heart of what we do. We mount the unit stably so it can't slip or fall, tilt it correctly so the condensation drains outside, and seal the surrounding area to keep out hot air, rain and bugs. An installation done by a pro is what saves you from nasty surprises and damage.

Do you take the air conditioner out in the fall?

Yes — if you rent your unit with Koomfo, we come back to uninstall it and pick it up at the end of the season, so you've got nothing to store. If it's your own air conditioner, we can also come out to remove it and close your window up properly for the winter. We sort it all out when you book.

How long does the installation take?

A window air conditioner installation usually goes fairly quickly, taking up a good part of a single visit, depending on the window and the unit. If you've got several air conditioners to set up or a window that's harder to reach, plan for a little more time. We'll give you a sense of how it'll go when we confirm your appointment.

What areas do you offer the Koomfo service in?

We cover a large part of Quebec, from Greater Montreal to Quebec City, including the Rive-Nord, the Rive-Sud and the surrounding regions. The easiest thing is to check your postal code on the site or drop us a line: we'll let you know right away whether we serve your area for rental or installation.

How do I book my installation or rental?

You can book online directly on the site, or request a quote if you'd rather talk it through first. The price is fixed and shown upfront, so you know the amount before we start. We confirm the rate and the date, and we take care of the rest so your summer stays nice and cool.

They put their trust in us

Clients who refer us
to their own family

« Pierre est un super beau-frère! Merci pour l'installation de nos climatiseurs. »

Normal Studio
Avis Google

« Quand j'ai appris que ma compagnie d'installation d'air climatisé Loue-Froid ne faisait plus de résidentiel en 2025, mes recherches sur le web m'ont mené jusqu'à votre compagnie. L'installation de mon climatiseur de fenêtre a été fait avec minutie, et mon rendez-vous de désinstallation est déjà pris pour l'automne. Alors si vous maintenez des tarifs raisonnables d'année en année, il me fera plaisir de faire encore affaires avec vous dans les années à venir. »

Monique Charbonneau
Avis Google

« Un ajout car on ne peut modifier, lors de la première visite le 9 mai l'installateur avait malheureusement un plexiglas trop petit. J'ai apprécié qu'il propose de. Revenir le lendemain au lieu de reporter a la semaine prochaine. C'est du bon service ça »

Charbonneau Monique
Avis Google

Your project starts here

First step — the easy one: check if we have a brother-in-law available in your area.

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(514) 666-2328