Product line against product line

Friedrich Uni-Fit vs WallMaster through-the-wall air conditioners

Both lineups side by side at every size both lines sell, from the 7 new through-the-wall air conditioners we can find in stock right now: live prices, CEER ratings, noise and the warranty each listing states.

The short answer

We track 3 Friedrich Uni-Fit and 4 Friedrich WallMaster through-the-wall air conditioners in stock, and both lines sell 2 sizes in common (10,000 and 12,000 BTU).

  • Friedrich Uni-Fit's cheapest model costs less at both sizes.
  • Friedrich WallMaster has 4 inverter models in stock, and no Friedrich Uni-Fit model in stock states an inverter compressor; an inverter compressor slows down instead of switching on and off, which is usually quieter and more efficient.
  • Friedrich Uni-Fit fits 24½, 26 and 27 in. sleeves and Friedrich WallMaster fits 27 in. sleeves, as the maker states them; a replacement has to fit the sleeve already in the wall, so measure it first.

The better buy depends on your size, so compare the models at yours below.

Prices last refreshed Oct 7, 2026Independent, nobody pays for placement.

Friedrich Uni-Fit and Friedrich WallMaster at a glance

Friedrich Uni-Fit and Friedrich WallMaster through-the-wall air conditioners: the in-stock lineups compared
Friedrich Uni-FitFriedrich WallMaster
In stock of models we track3 of 94 of 7
Sizes in stock8,000 to 12,000 BTU10,000 to 15,000 BTU
Live prices$799 to $849$1,199 to $1,699
Best CEERNot publishedCEER 13.9 (Wallmaster 12,000 BTU Through-the-Wall Air Conditioner)
ENERGY STAR0 of 34 of 4
Inverter models0 of 34 of 4
Wi-Fi, as listed0 of 30 of 4
Heat too0 of 31 of 4
115 V models2 of 31 of 4
Wall sleeve, as the maker states itFits 24½, 26 and 27 in. sleevesFits 27 in. sleeves
Compressor warranty, as listed5 yr (1 of 3 state it)Not stated
Recall checkNone namedNone named

What each maker says about the line

Friedrich Uni-Fit

Uni-Fit is the Friedrich through-the-wall unit made to fit existing 24½, 26 and 27-inch wall sleeves, including many other brands' sleeves, with a trim ring that covers small gaps. It comes in cooling-only (UCT) and electric heat (UET) models from 8,000 to 14,000 BTU, and a new installation needs a Friedrich sleeve, sold separately.

Sources: Friedrich, Uni-Fit; Friedrich, Uni-Fit brochure, read September 30, 2026.

Every Friedrich Uni-Fit model

Friedrich WallMaster

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.

Every Friedrich WallMaster model

Size by size

Every new through-the-wall air conditioner of each line we can find in stock, cheapest first, at each size both sell. A model within 5% of a size is grouped with it and shows its own rating. marks a noise rating we have checked against the retailer's specification for that exact model.

10,000 BTU

The two cheapest, head to head
  • Friedrich Uni-Fit's cheapest is $350 less

Friedrich Uni-Fit · 1 in stock

Friedrich WallMaster · 2 in stock

12,000 BTU

The two cheapest, head to head
  • Friedrich Uni-Fit's cheapest is $500 less

Friedrich Uni-Fit · 1 in stock

Friedrich WallMaster · 1 in stock

Only Friedrich Uni-Fit sells 8,000 BTU in stock; only Friedrich WallMaster sells 15,000 BTU.

Prices are live retailer offers and change often. compare.ac may earn a commission on purchases, at no cost to you; it never changes the price you pay or how we compare.

How we compare two lines

  • Only new units we can find in stock with a live price, at the same size. A line's average says more about its size mix than about the line.
  • A price difference counts when it is at least 5% and at least $20, and only between models that install the same way (a do-it-yourself kit is never priced against an installer-fitted system).
  • Efficiency is compared on one scale (CEER) and counts at a gap of 0.5 or more; noise counts at 3 dB(A) or more, using only ratings checked against the retailer's specification for the exact model.
  • Warranty terms are as each listing states them. Models named in a CPSC recall are never compared or sold here.
Read our full methodology

Friedrich Uni-Fit vs Friedrich WallMaster: common questions

Is Friedrich Uni-Fit or Friedrich WallMaster cheaper?
It depends on the size. Comparing each line's cheapest new, in-stock model at the same size, Friedrich Uni-Fit's cheapest model costs less at 10,000 BTU ($849 against $1,199) and 12,000 BTU ($849 against $1,349). These are live retailer prices and change often.
What sizes do Friedrich Uni-Fit and Friedrich WallMaster through-the-wall air conditioners come in?
In stock right now, Friedrich Uni-Fit sells 8,000, 10,000 and 12,000 BTU and Friedrich WallMaster sells 10,000, 12,000 and 15,000 BTU. So only Friedrich Uni-Fit sells 8,000 BTU and only Friedrich WallMaster sells 15,000 BTU. Size the unit to the room first: an oversized unit short-cycles and leaves the air cool but damp.
Do Friedrich Uni-Fit and Friedrich WallMaster make inverter through-the-wall air conditioners?
No Friedrich Uni-Fit model in stock states an inverter compressor, and Friedrich WallMaster has 4, going by each listing and the maker's model numbers. An inverter compressor slows down instead of switching on and off, which is usually quieter and more efficient at part load.
Will Friedrich Uni-Fit or Friedrich WallMaster fit my wall sleeve?
Friedrich Uni-Fit: Friedrich says the Uni-Fit fits existing 24½, 26 and 27-inch sleeves, and lists these makers' sleeves (25½ to 27 inches wide) as compatible: Amana, Carrier 51S and 52F, Fedders/Emerson, Friedrich WallMaster (WSE), GE/Hotpoint, Whirlpool, Frigidaire and White-Westinghouse. A trim ring covers gaps of up to 1 inch at the sides and ½ inch at the top, and in an existing sleeve Friedrich's manual has you replace the old rear grille with the one in the kit. A new installation needs Friedrich's USC or USEZ sleeve, sold separately. Friedrich WallMaster: Made for existing 27-inch sleeves, including Fedders A sleeves and, with Friedrich's baffle kit, the deeper Fedders B; it mounts flush with the outside wall. A new installation needs Friedrich's WSE or WSEZ sleeve (27 x 16¾ x 16¾ in.), sold separately. Measure the inside width and height of the sleeve in your wall, and check its make if a label survives, before you order either.
Have any Friedrich Uni-Fit or Friedrich WallMaster through-the-wall air conditioners been recalled?
None of the 9 Friedrich Uni-Fit and 7 Friedrich WallMaster through-the-wall air conditioners we track is named in a CPSC recall notice we check. That covers the models listed here, not every model either line has sold, and it is not a safety certification.

Go deeper

Every Friedrich Uni-Fit model comparedEvery Friedrich WallMaster model comparedBest through-the-wall ACEvery through-the-wall AC by the sleeve it fitsWhat size do you need? Sizing calculator

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