ProfessionalWindow AC Unit Installation

Window air conditioners are heavy and awkward to install safely — and a unit that isn't properly secured can fall out. We mount your window AC unit level, seal the gaps around it and anchor it so it stays put through the whole cooling season.

Also known as: window AC installation, window air conditioner install, window AC unit mounting, air conditioner window install, window unit installation, AC installation, window air conditioning install, window AC instalation

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Upfront pricing

Clear, honest quotes before any work begins.

Licensed & insured

Vetted local pros who treat your home with care.

Done right

We stand behind every job until you are satisfied.

What you get

What’s included

Lift and seat the AC unit in the window opening
Extend and lock the accordion side panels
Fill any remaining gaps with foam tape or weather seal
Ensure the unit tilts slightly outward for proper condensate drainage
Install window bracket or support brace for heavy units
Test cooling before leaving

Simple & stress-free

How it works

Prepare the window

We open the window to the correct height, check the sill level and install a support bracket if the unit requires one.

Seat and secure the unit

We lift the AC into position, extend the side panels and lock the window sash down onto the unit for security.

Seal and test

We fill gaps with foam tape, verify the slight outward tilt and run the unit to confirm it cools and drains correctly.

We can help

Problems we fix

Units installed without a support bracket that rest entirely on the window sash, risking a fall
Level or inward-tilting units that allow condensate to drip inside the room
Gaps in the accordion side panels that let hot air, insects and humidity back in
Oversized units that overload an outlet on a circuit with other heavy appliances

Good to know

Window AC Unit Installation — FAQ

Do all window AC units need a support bracket?

Units over 80 lbs or those in second-floor or higher windows typically need a support bracket. We assess weight and window type before mounting.

Which direction should a window AC tilt?

Slightly toward the outside — about 1/4" drop per foot — so condensate drains away from the room. We use a level to set this correctly.

Can you install a window AC in a casement window?

Standard window ACs are designed for double-hung windows. Casement windows require a specialized sleeve-type unit. We'll tell you at the visit whether your window is compatible.

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