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 6, 2026

Buy at Sylvane In stock

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Will it cool your room?

Room size 500 sq ft ≈ 46.5 m²

Undersized for 46.5 m²

This is undersized for your 500 sq ft room. It would run flat out and struggle to keep up.

Compare similar units

At a glance

Best for renters and rooms where you cannot install a fixed unit.

Cooling

2.9 kW

Size

Average

Noise

Install: Self-fit, no pro neededPermission: Usually no permit

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
Indoor unit: 20.3 x 14.6 x 20.5 in
Outdoor unit: None
Refrigerant: Not published
Wi-Fi / app: Not published
Outdoor unit needed: No

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

United StatesUS: local mechanical and electrical permits (vary by city)Reviewed June 2026Permit required

United StatesUS: historic district Certificate of AppropriatenessReviewed June 2026Permit required

United StatesUS: HOA / condo CC&Rs and architectural reviewReviewed June 2026Permit required

United StatesUS: NEC Article 440 dedicated circuit and disconnectReviewed June 2026Allowed with conditions

United StatesUS: window-unit restrictions and bracket/safety rulesReviewed June 2026Allowed with conditions

See all United States rules

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.