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Friedrich WallMaster® 12,000 BTU White Thru the Wall Air Conditioner

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Model #: WET12A33A
Model #: WET12A33A
Friedrich WallMaster® 12,000 BTU White Thru the Wall Air Conditioner-0
Friedrich WallMaster® 12,000 BTU White Thru the Wall Air Conditioner-1
Friedrich WallMaster® 12,000 BTU White Thru the Wall Air Conditioner-2
Friedrich WallMaster® 12,000 BTU White Thru the Wall Air Conditioner-3
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At a Glance

WallMaster® is your only perfect fit for existing 27" sleeves, including Fedders A and B (requires a baffle kit). Our new 2021 smart models have integrated Wi-Fi control through FriedrichConnect®, and are voice command compatible. From the durable commercial-grade construction to our QuietMaster® technology, WallMaster® is feature-packed. Read More

Get to know this product.

Product Overview
Product Overview
Quietmaster® Technology

Engineered for quiet performance with superior components. As much as 45% quieter than competitor’s products.

Steel inner wall and extra dense insulation blocks outdoor noise

Vibration isolating design and components reduce operating noise

Precision engineering delivers maximum air flow and air dispersion at low sound levels

Smart Wi-Fi Control with Voice Command

Home or away, you’re in control with the Friedrich Connect™ App. Integrated Wi-Fi control from your smartphone and voice command compatible. New intuitive platform. Simplified 7-day programmability. With our advanced grouping program, you can control multiple units to work independently or as a single system. You can even invite other users to manage one or more of your units

Commercial Grade Quality & Durability

Each WallMaster unit is designed with a rotary compressor to provide quiet, dependable performance. Dense blower insulation blocks outside noise. A premium aluminum exterior grille and impact resistant front cover come standard with each model.

Comfort & Convenience

Units are equipped with a three-speed fan, 24-hour timer, and electronic defrost control. Individually adjustable louvers direct airflow to where it’s needed most. The unit’s Money Saver® setting cycles the fan with the compressor.


WallMaster units mount flush with the exterior wall. Firm grip handles on the chassis allow for easy installation and removal from wall sleeve.

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General Specs

Product Weight (lbs.)107
Width (in.)27.5
Appliance ColorWhite
Installation TypeWall Mounted
Cooling Capacity (BTU)12000
Depth (in.)23.25
Height (in.)17.25
Cord Length (Ft)6
Control TypeElectronic Buttons
No. of Fan Only Speeds3
Manufacturer Warranty1 Year
Cord Length (in.)72
Plug TypeNEMA 6-20
Color Finish NameWhite
Air Conditioner TypeThrough-the-Wall
Smart CompatibleYes
Wifi CapableYes
Maximum CFM290
BTU Cooling Rating12000
Recommended Room Size550
BTU Heat Rating11000
Shipping Depth (in.)27.5
Shipping Width (in.)30.63
Shipping Height (in.)19.38
Ac Room SizeMedium Room ACs (300-600 SQ FT)
Air Conditioner FeaturesSmart Compatible, Timer, Wi-Fi Capable
Moisture Removal Capacity Pints Per Day91.2
Air Filter FeaturesWashable


24 Hour TimerYes
Check Filter ReminderYes
Auto RestartYes