Window AC Installation
Safe & Building-Ready
Heat wave, unit still in the box, and your building wants a bracket. Text a window photo and get a free estimate back.
You bought the unit, your building says it needs a bracket, and nobody wants to lean out a sixth-floor window to find out how it mounts. That is ordinary window AC installation in NYC, and it is why we scope the job from photos before anything gets booked. Send the model or BTU label with a photo of the window and the estimate comes back free. Most window jobs can be priced without a visit.
What you get is a unit that sits level, drains outside instead of onto your sill, and does not shift when the sash comes down. We can supply and mount the support bracket when the unit weight or your building rules call for one, foam-seal the side gaps, secure the window, and check the outlet against the model label. No extension cords, and heavy units on upper floors get a two-person lift instead of one person hanging over the ledge.
Co-ops and condos usually want a Certificate of Insurance before anyone opens the window, and we send one to management on request. Prewar frames, deep sills, top-sash installs above a radiator, casement and slider openings all get reviewed from photos first, since they change the support and sealing plan. If the job needs a new outlet, a dedicated circuit, hardwired power, or facade work, we say so before booking and point you to the licensed trade that handles it.
Replacing an old unit? We can pull it out, close the window back up, and plan the disposal path, since NYC air conditioners usually need a DSNY refrigerant pickup arranged before collection. Text +1 (775) 310-7770 with the model or BTU label, photos of the window from inside and outside where it is safe, sill and frame measurements, your floor, and any bracket or COI rules from management. Photo estimates are free, work starts at the $150 minimum and is quoted before anything begins, and if photos cannot settle it, the $99 on-site assessment (plus sales tax) is credited toward approved work done within 30 days — longer when agreed in writing in advance.
Window AC season is our busiest: installation, bracket installation, support for heavy units, removal and reinstall, co-op and condo COI paperwork, and apartment air conditioner setup across NYC. For through-wall sleeves, PTACs or portable units, see the related AC pages below.
For an accurate quote, send the AC model or BTU label, window photos from inside (and outside, if it is safe), sill and frame measurements, the floor, your building’s bracket rules, where the outlet is, and whether an old unit needs to come out. That is usually enough to tell whether a standard visit fits or a bracket, a two-person lift or building approval is needed first.
We provide AC installation, bracket, sleeve, removal, and cleaning service across Queens, Manhattan, Brooklyn and Staten Island. For a faster quote, text the AC model or BTU label, window or sleeve photos, measurements, and any building bracket or COI rules.
Related project context: the Kips Bay AC cover box shows a made-to-measure cover built for a high-rise AC unit plus the drywall patching and repainting around it, while the Brooklyn AC-adjacent drywall repair shows finish repair around AC-related work.
Window AC Installation Process
Send Us Your Details
Snap a photo of your window and tell us your AC model & BTU size. Text or email — takes 30 seconds.
Review the Scope
We check unit weight, bracket needs, window condition, building rules, access, and disposal needs before confirming the quote.
Scheduled Installation
We arrive during the confirmed window, mount the approved support, install the unit, seal gaps, and check the setup.
Final Check
We clean up, walk you through the controls, and you’re ready for summer.
Window AC Installation Quote Planner
Select your details below - the estimate updates live. Final quote confirmed after photo review.
What Size AC Do I Need?
Buying the right size unit is crucial. Too small, and it won't cool the room. Too large, and it will leave the air feeling humid and clammy.
| Room Area (sq ft) | Recommended capacity (BTUs/hr) | Typical Room Type |
|---|---|---|
| 100 up to 150 | 5,000 | Small bedroom or office |
| 150 up to 250 | 6,000 | Medium bedroom |
| 250 up to 300 | 7,000 | Large bedroom or small living room |
| 300 up to 350 | 8,000 | Living room |
| 350 up to 400 | 9,000 | Large living room |
| 400 up to 450 | 10,000 | Living room + kitchen area |
| 450 up to 550 | 12,000 | Open-concept studio apartment |
| 550 up to 700 | 14,000 | Large open floor plan |
| 700 up to 1,000 | 18,000 | Full floor or multi-room |
Note: Add 10% for heavily shaded rooms. Add 20% for sun-drenched rooms. Increase capacity by 600 BTUs for each additional occupant beyond two. Add 4,000 BTUs if installing in a kitchen.
NYC Building Codes & Requirements
Exterior Support Brackets
NYC safety guidance and many co-op/condo building rules require window AC units to be securely supported with brackets, rails, or interior angles when the setup calls for it. We plan the support around the unit weight, manufacturer instructions, and building rules, and can help with building COI requirements on request.
Certificate of Insurance (COI)
Many co-ops and condos in NYC require a customized Certificate of Insurance before installation. Send the building requirements early so the paperwork can be reviewed before booking.
Window Clearance
AC units must not obstruct fire escapes. Units placed in fire escape windows are illegal and unsafe. Never install an AC in a hallway or stairwell window.
Outlet Load Check
Never use extension cords with a window AC. The unit should plug directly into an existing wall outlet that matches the model's load requirements; new outlet or circuit work is reviewed before booking.
Safe Pitching
To prevent leaks, window ACs must be pitched slightly downwards toward the outside. This allows condensation to drain outdoors, not inwards onto window sills or floors.
Requirements vary by building. We recommend confirming with your management and reviewing NYC's official air conditioner safety guidance before installation.
Window AC Installation Gallery
Know the Cost Before Anyone Shows Up
4.9★ average from 94 reviews on Google, Yelp and Thumbtack. Read reviews →
1. Free Photo Estimate
Text photos of the job to +1 (775) 310-7770 or send them through the form — you get a real answer and a price range for free.
2. $99 On-Site Assessment
Can't tell from photos? We come out and diagnose on site for $99 plus sales tax. It is credited toward approved work done within 30 days — longer when agreed in writing in advance.
3. $150 Work Minimum
Every job is quoted and approved before work starts — no surprises. After a $99 assessment, a $150 job means you pay the $51 difference. Prices are plus NY sales tax where applicable.
4. Install + Fall Removal Bundle
Book the fall removal with the install and pay once: a window AC install up to 12,000 BTU in a double-hung window plus the removal visit in the fall is $300–$375 for the first unit and $150–$225 each for additional units on both visits. Removal on its own is priced on the AC removal page.
Window AC FAQ
How much does window AC installation cost in NYC?
Pricing depends on the unit size, weight, window type, floor level, support bracket needs, access, disposal path, and building rules. Send photos and the model label so we can confirm the scope before booking.
Do you supply the support bracket?
Yes. Many NYC co-ops, condos, and managed buildings require window ACs to have exterior support brackets. We can supply or install support hardware selected around the unit weight, manufacturer instructions, and building rules, and provide a COI for building management on request.
Can you install a window AC in a casement or slider window?
Sometimes. Double-hung windows are the most common fit, while casement, slider, top-sash, and non-standard openings need photo and measurement review before we can confirm the support and sealing plan.
Do you remove and dispose of old AC units?
We can remove the old unit, close or seal the window, and help plan the disposal path. NYC air conditioners often need DSNY CFC/Freon pickup coordination before collection.
What size window AC do I need for my room?
It depends on room size, sun exposure, ceiling height, and layout. As a quick guide, small bedrooms often use 5,000–8,000 BTU, while living rooms and open areas may need 10,000–18,000+ BTU. Check our sizing table above, or send us the room dimensions and we'll help you choose.
How long does window AC installation take?
Most standard installations take about 45–90 minutes. Complex windows (casement, slider, custom framing, plexiglass panels, or difficult exterior access) may take longer.
Do I need building permission to install a window AC in NYC?
Many co-ops, condos, and managed buildings require approval and/or a Certificate of Insurance (COI) before installation. We can provide a COI and help you prepare the details management usually asks for.
Can you install an AC in a top-section window?
Top-sash installs are reviewed case by case because support, window balance, bracket geometry, sealing, and exterior access can be different from a standard lower-sash install.
Is it safe to use an extension cord for a window AC?
No — extension cords are not recommended for window AC units due to overheating and fire risk. Window ACs should be plugged directly into a suitable wall outlet following the manufacturer's instructions.
Which NYC boroughs do you serve?
We provide window AC installation across Manhattan, Brooklyn, Queens and Staten Island.
What should I send for a window AC installation quote?
Send the AC model or BTU label, unit weight if known, window photos from inside and outside if safe, sill and frame measurements, floor level, outlet location, building bracket or COI rules, whether old-unit removal or disposal is needed, and preferred timing.
Real Results, Real Reviews
“I recently had a window air conditioner installed in my home, and I couldn't be more satisfied with the service! … He installed a sturdy support bracket and carefully mounted a large 12,000 BTU unit with precision and care.”
“Nikita from Repair ASAP LLC was wonderful to work with, and did an excellent job with our A/C installation. He was professional, responsive and took the time to explain what needed to be completed. Fantastic service!”
“Ayrat did a great job helping me with replacing my window seals and mounting my new PTAC units. He was on time, responsive and easy to work with.”