Monthly Home Repair Series · 2027-03-01
Window AC Installation in New Orleans: Secure, Level & Storm-Ready (March 2027)
March is the best time to install or replace a window AC in New Orleans — before the first long stretch of 90-degree days. This guide covers the details that keep a unit cooling efficiently, draining outdoors and secured in the window without damaging historic trim.
Choose the right BTU size
An undersized unit runs constantly and never dries the room; an oversized unit cools too quickly to remove our humidity. A practical starting point is about 20 BTU per square foot, adjusted upward for sunny rooms, kitchens, tall ceilings and rooms with several occupants. We confirm the window opening and electrical requirements before installation.
Most bedrooms use 5,000–8,000 BTU units, while larger living rooms often need 10,000–14,000 BTU. Large 230-volt units need the correct existing outlet; we do not add new circuits.
Level means slightly tilted outside
A window unit should look level from the room but follow the manufacturer's slight outward pitch so condensation drains outdoors. Too flat can send water into the sill; too steep can strain the chassis and leave gaps around the side panels. We set the cabinet to the specified angle and test drainage before leaving.
Secure the sash and protect old windows
The sash alone should never be the only thing holding the unit. We use a rated support bracket where required, fasten the upper sash so it cannot lift, and seal the side panels against humid air and insects. In Algiers Point and Mid-City, original wood windows and deep sills need careful shimming rather than screws driven through historic trim.
Downtown loft windows may be metal, oversized or restricted by building rules. We check the opening and management requirements first; a portable or through-wall unit may be the better choice when the window cannot safely support a standard unit.
Storm season and yearly maintenance
A window AC should come out before a major hurricane if it can be removed safely. Between storms, clean the filter monthly, keep the outdoor coil clear and inspect the seal after heavy rain. A loose or rusted bracket should be corrected before summer weather arrives.
How to book
Text the unit model and photos of the inside and outside of the window to 504-222-2969, or choose Window AC Installation in Book Online. We serve New Orleans, Metairie, Kenner, Gretna, Harvey, Marrero, Chalmette, Westwego, Terrytown and Belle Chasse. Ask about a swap, secure reinstall or a unit that is leaking into the room.
Key takeaways
- Size the unit for room area, sun, ceiling height and New Orleans humidity
- Follow the manufacturer's slight outward drainage angle
- Use a support bracket and secure the sash — never rely on the window alone
- Protect historic trim and plan safe removal before major storms
FAQ
Can you install a window AC in an old wood window?
Yes. We measure the opening, protect the original sill and trim, shim the unit level and use support hardware appropriate for the window.
Why is my window AC leaking into the room?
Common causes are an incorrect angle, a blocked drain path, a dirty filter or coil icing. We can remove, clean and reinstall the unit correctly.
Should I remove my window unit for a hurricane?
If a major storm is approaching and the unit can be removed safely, yes. Follow local emergency guidance and never work outside once conditions deteriorate.
How do I get a free quote from HandyHal?
Call or text 504-222-2969 with a short description or a photo of the project, or use the Book Online button on handyhal.com. We serve New Orleans, Metairie, Kenner, Gretna, Harvey, Marrero, Chalmette, Westwego, Terrytown and Belle Chasse with fast, free, flat-rate quotes.