Product line
We track 7 Friedrich WallMaster models, 10,000 BTU to 15,400 BTU. 3 are in stock right now, from $1,199 at Abt Electronics.
Smallest first. Figures are the ones each listing publishes; a blank is a figure it does not state.
Size
10,000 BTU
up to 350 sq ft
Efficiency
CEER 13
ENERGY STAR
Noise
Not published
Heat
Cooling only
Friedrich
WallMaster Through-The-Wall Smart Air Conditioner 10,000 BTU 115VSize
10,000 BTU
up to 350 sq ft
Efficiency
CEER 13
ENERGY STAR
Noise
Not published
Heat
Cooling only
115 V
Size
12,000 BTU
up to 550 sq ft
Efficiency
CEER 13.9
ENERGY STAR
Noise
Not published
Heat
Cooling only
Size
12,000 BTU
up to 550 sq ft
Efficiency
CEER 13.2
ENERGY STAR
Noise
Not published
Heat
Cooling only
115 V
Price
No live offerFriedrich
WallMaster Smart Inverter Through-the-Wall Air Conditioner with Heat Pump 15,200 BTU inSize
15,200 BTU
up to 600 sq ft
Efficiency
CEER 12.8
ENERGY STAR
Noise
Not published
Heat
Heats
Price
No live offerSize
15,200 BTU
up to 700 sq ft
Efficiency
CEER 12
ENERGY STAR
Noise
Not published
Heat
Heats, 3.2 kW
Price
No live offerSize
15,400 BTU
up to 700 sq ft
Efficiency
CEER 12.6
ENERGY STAR
Noise
Not published
Heat
Cooling only
Price
No live offerPrices are live retailer offers and change often; compare.ac may earn a commission on purchases, at no cost to you. Where one model number is sold as more than one listing, the row shows the cheapest and links the others.
WallMaster is the Friedrich through-the-wall unit for existing 27-inch sleeves, including Fedders A and B sleeves (B needs a baffle kit), and it mounts flush with the outside wall. Friedrich says current models use inverter compressors and R-32, and that the heat pump model heats down to 45°F outdoors.
Sources: Friedrich, WallMaster brochure 2026; Friedrich, WallMaster, read September 30, 2026.
The Friedrich WallMaster models we track run from 10,000 BTU to 15,400 BTU: 10,000 BTU, 12,000 BTU, 15,200 BTU and 15,400 BTU. Match the size to your room with the sizing calculator rather than picking the biggest one.
Right now the in-stock Friedrich WallMaster models we track range from $1,199 (at Abt Electronics) to $1,349 (the 12,000 BTU WCVT12B30A at Abt Electronics). Prices are live retailer offers and change often.
Among the 7 Friedrich WallMaster models rated on the CEER scale, the 12,000 BTU WCVT12B30A rates highest at CEER 13.9. A higher CEER means less electricity for the same cooling.
2 of the 7 Friedrich WallMaster models we track also heat; the rest are cooling only. The table marks which is which.