What size room does the Hisense 10,000 BTU UltraSlim Window Air Conditioner cool?

It is rated to cool a room up to 450 sq ft (10,000 BTU · 2.9 kW).

Do I need a professional to install the Hisense 10,000 BTU UltraSlim Window Air Conditioner?

No. It is a window unit you can fit yourself, no professional needed. Usually no permit.

Window unit

Hisense · Model AALW10TW26

10,000 BTU UltraSlim Window Air Conditioner

Name: Hisense 10,000 BTU UltraSlim Window Air Conditioner
Brand: Hisense
Price: 509 USD
Availability: InStock

A window air conditioner rated at 10,000 BTU for rooms up to 450 sq ft. It self-installs in a window.

$509

Live price at Sylvane

Price checked Oct 1, 2026

Buy at Sylvane In stock

Performance

Cooling capacity: 10,000 BTU · 2.9 kW
Heating capacity: Cooling only
Room coverage: up to 450 sq ft
Energy Star: Not published
CEER: Not published
Annual energy (cooling): Not published

Noise, size & features

Model number: AALW10TW26
Indoor noise: Not published
Outdoor noise: Not published

What to watch

At $509 it costs more than 17 of the 20 other 10,000-11,000 BTU window units we list with a live price.

Installation & the rules that apply

This is a window unit. No EPA Section 608 technician is needed: the refrigerant circuit is factory-sealed and never opened. A plug-in window unit needs no permit, so the friction is with your building rather than the government. Many HOAs restrict window units on appearance grounds, though an HOA regulating how you mount one stands on much firmer ground than one banning cooling outright. Landlords can set conditions, and the falling hazard is taken seriously: New York City, for instance, requires window units to be supported by brackets or mounting rails, and many building insurers and HOAs now require a bracket regardless of city.

Installation

Self-fit, no pro needed

Refrigerant

GeneralRenters: get written landlord consent firstReviewed June 2026Often blocks install

Common questions about the Hisense 10,000 BTU UltraSlim Window Air Conditioner

What size room does the Hisense 10,000 BTU UltraSlim Window Air Conditioner cool?: It is rated to cool a room up to 450 sq ft (10,000 BTU · 2.9 kW).
Do I need a professional to install the Hisense 10,000 BTU UltraSlim Window Air Conditioner?: No. It is a window unit you can fit yourself, no professional needed. Usually no permit.