Through-the-wall & PTAC
Through-the-wall air conditioners, matched to your wall sleeve
A through-the-wall unit has to fit the sleeve already in your wall, and its own size does not tell you which sleeve that is. We list 77 through-the-wall, PTAC and window-or-wall units from 9 brands (57 in stock right now), with the sleeve its maker says each one fits (70 of the 77 publish one), its heat option, its voltage where the listing states it, and the live price.
Friedrich Uni-Fit: fits 24½, 26 and 27 in. sleeves
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. Source: Friedrich Uni-Fit brochure (sleeve table)
Friedrich
Uni-Fit Through-The-Wall Smart Air Conditioner 8,000 BTUThrough-the-wall8,000 BTUCool onlyVoltage not statedFits 24½, 26 and 27 in. sleeves
Friedrich
Uni-Fit 10,000 BTU 10.7 EER 230 V Smart Through-The-Wall Air Conditioner in WhiteThrough-the-wall10,000 BTUCool only230 VFits 24½, 26 and 27 in. sleeves
Friedrich
Uni-Fit 12,000 BTU Through-the-Wall Air Conditioner - 110/120 VThrough-the-wall12,000 BTUCool only115 VFits 24½, 26 and 27 in. sleeves · chassis 24.21 x 14.53 x 20.28 in
Friedrich
Uni-Fit 12,000 BTU 10.6 EER 115 V Smart Through-The-Wall Air Conditioner in WhiteThrough-the-wall12,000 BTUCool only115 VFits 24½, 26 and 27 in. sleeves
Friedrich
Uni-Fit 14,000 BTU 9.4 EER 230 V Smart Through-The-Wall Air Conditioner in WhiteThrough-the-wall14,000 BTUCool only230 VFits 24½, 26 and 27 in. sleeves
Friedrich
Uni-Fit 8,000 BTU Through-the-Wall Air Conditioner with HeatThrough-the-wall8,000 BTUAlso heatsVoltage not statedFits 24½, 26 and 27 in. sleeves · chassis 24.21 x 14.53 x 20.28 in
Not in stock at a retailer we track right now
Friedrich
Uni-Fit Smart Wi-Fi Through The Wall Air Conditioner with Heat 10,000 BTUThrough-the-wall10,000 BTUAlso heatsVoltage not statedFits 24½, 26 and 27 in. sleeves
Not in stock at a retailer we track right now
Friedrich
Uni-Fit 10,000 BTU Through-the-Wall ACThrough-the-wall10,000 BTUCool onlyVoltage not statedFits 24½, 26 and 27 in. sleeves · chassis 24.21 x 14.53 x 20.3 in
Not in stock at a retailer we track right now
Friedrich
Uni-Fit 12,000 BTU Through-the-Wall Air Conditioner with HeatThrough-the-wall12,000 BTUAlso heatsVoltage not statedFits 24½, 26 and 27 in. sleeves · chassis 24.21 x 14.53 x 20.28 in
Not in stock at a retailer we track right now
Friedrich
Uni-Fit 14,000 BTU Through-the-Wall Air ConditionerThrough-the-wall14,000 BTUCool onlyVoltage not statedFits 24½, 26 and 27 in. sleeves · chassis 24.21 x 14.53 x 20.28 in
Not in stock at a retailer we track right now
Keystone through-the-wall: fits 25½ to 27 in. sleeves
Keystone's installation manual lists the existing sleeves it fits, from Frigidaire, GE/Hotpoint, Whirlpool, Fedders/Emerson, Sears/Kenmore, Carrier and Friedrich (25½ to 27 inches wide), and the old rear grille is replaced by the one in the kit. Keystone's own sleeve for a new installation is the KSTSLV1, sold as a 26-inch sleeve (its spec sheet gives 25½ x 15¼ x 17½ in.), for walls up to 17¾ inches thick. Source: Keystone installation manual
Keystone
8,000 BTU Through-the-Wall Air Conditioner - Cool/HeatThrough-the-wall8,000 BTUAlso heatsVoltage not statedFits 25½ to 27 in. sleeves · chassis 24.2 x 14.5 x 20.3 in
Keystone
10,000 BTU Through-the-Wall Air Conditioner w/ HeatThrough-the-wall10,000 BTUAlso heatsVoltage not statedFits 25½ to 27 in. sleeves · chassis 24.2 x 14.5 x 20.3 in
Keystone
12,000 BTU Through-The Wall 230V Air Conditioner - Cool/HeatThrough-the-wall12,000 BTUAlso heats230 VFits 25½ to 27 in. sleeves · chassis 24.2 x 14.5 x 20.3 in
Keystone
14,000 BTU Through-the-Wall Air ConditionerThrough-the-wall14,000 BTUCool onlyVoltage not statedFits 25½ to 27 in. sleeves · chassis 24.2 x 14.5 x 20.3 in
Keystone
14,000 BTU Through-the-Wall Air Conditioner with HeatThrough-the-wall14,000 BTUAlso heatsVoltage not statedFits 25½ to 27 in. sleeves · chassis 24.2 x 14.5 x 20.3 in
Keystone
8,000 BTU Through-the-Wall Air Conditioner - Cool OnlyThrough-the-wall8,000 BTUCool onlyVoltage not statedFits 25½ to 27 in. sleeves · chassis 24.2 x 14.5 x 20.3 in
Not in stock at a retailer we track right now
Whirlpool through-the-wall: fits a 26 in. standard sleeve
Whirlpool's manual gives its standard sleeve as 26 inches wide, 15¾ high and 16¾ deep, and asks you to check that another maker's sleeve suits the unit before installing. A universal interior trim kit for an existing standard sleeve comes with it; new sleeves are sold separately. Source: Whirlpool installation manual
Whirlpool
10,000 BTU Through-The-Wall Air Conditioner 115V - No HeatThrough-the-wall10,000 BTUCool only115 VFits a 26 in. standard sleeve · chassis 24.2 x 14.5 x 20.2 in
Whirlpool
10,000 BTU Through-The-Wall Air Conditioner 115V - With HeatThrough-the-wall10,000 BTUAlso heats115 VFits a 26 in. standard sleeve · chassis 24.2 x 14.5 x 20.2 in
Whirlpool
12,000 BTU Through-The-Wall Air Conditioner 230V - Cool OnlyThrough-the-wall12,000 BTUCool only230 VFits a 26 in. standard sleeve · chassis 24.2 x 14.5 x 20.2 in
Whirlpool
12,000 BTU Through-The-Wall Air Conditioner 230V - With HeatThrough-the-wall12,000 BTUAlso heats230 VFits a 26 in. standard sleeve · chassis 24.2 x 14.5 x 20.2 in
Whirlpool
14,000 BTU Through-The-Wall Air Conditioner - Cool OnlyThrough-the-wall14,000 BTUCool onlyVoltage not statedFits a 26 in. standard sleeve · chassis 24.2 x 14.5 x 20.2 in
Whirlpool
8,000 BTU Through-The-Wall Air Conditioner - No HeatThrough-the-wall8,000 BTUCool onlyVoltage not statedFits a 26 in. standard sleeve
Not in stock at a retailer we track right now
Whirlpool
14,000 BTU Through-The-Wall Air Conditioner - With HeatThrough-the-wall14,000 BTUAlso heatsVoltage not statedFits a 26 in. standard sleeve · chassis 24.2 x 14.5 x 20.2 in
Not in stock at a retailer we track right now
Perfect Aire through-the-wall: fits 25½ to 27 in. sleeves
Perfect Aire says this 24-inch unit fits standard wall sleeves, and its manual's chart lists sleeves 25½ to 27 inches wide (asking you to confirm yours with its maker); an interior trim kit is included. Its own sleeve for a new installation is the PAWS1, sold separately. Source: Perfect Aire product page
Perfect Aire
10,000 BTU Through-The-Wall Air ConditionerThrough-the-wall10,000 BTUCool onlyVoltage not statedFits 25½ to 27 in. sleeves · chassis 24.25 x 14.5 x 20.5 in
Perfect Aire
12,000 BTU Through-the-Wall Air Conditioner 230VThrough-the-wall12,000 BTUCool only230 VFits 25½ to 27 in. sleeves · chassis 24.25 x 14.5 x 20.5 in
LG through-the-wall: fits 26 in. standard sleeves (25½ to 27 in.)
LG's manual lists the existing sleeves it fits (25½ to 27 inches wide, from Frigidaire, GE/Hotpoint, Whirlpool, Fedders/Emerson, Carrier and Friedrich), but LG strongly recommends a new LG sleeve and says an existing sleeve's rear louvers must be redirected. LG's own sleeve is the AXSVA1, or the AXSVA4 with a stamped grille (about 25⅞ x 15½ x 16¾ in.). Source: LG owner's manual (hosted by P.C. Richard)
LG
8,000 BTU Through-the-Wall Air ConditionerThrough-the-wall8,000 BTUCool onlyVoltage not statedFits 26 in. standard sleeves (25½ to 27 in.) · chassis 24 x 14.4 x 20.09 in
LG
9,800 BTU Through-the-Wall Air ConditionerThrough-the-wall9,800 BTUCool onlyVoltage not statedFits 26 in. standard sleeves (25½ to 27 in.) · chassis 24 x 14.41 x 20.09 in
LG
11,200 BTU Through-the-wall Air Conditioner Heat/Cool - LT1233HNRThrough-the-wall11,200 BTUAlso heatsVoltage not statedFits 26 in. standard sleeves (25½ to 27 in.) · chassis 24 x 14.4 x 20.1 in
LG
11,800 BTU Through the Wall Air ConditionerThrough-the-wall11,800 BTUCool onlyVoltage not statedFits 26 in. standard sleeves (25½ to 27 in.) · chassis 24 x 14.44 x 20.13 in
LG
14,000 BTU Through-The-Wall Air ConditionerThrough-the-wall14,000 BTUCool onlyVoltage not statedFits 26 in. standard sleeves (25½ to 27 in.) · chassis 24 x 14.4 x 20.1 in
Not in stock at a retailer we track right now
TCL through-the-wall: needs a sleeve at least 26 x 15¾ in.
TCL says its through-the-wall units fit standard 26-inch sleeves: its manual asks for a sleeve (not supplied by TCL) at least 26 inches wide and about 15¾ inches high, and TCL strongly recommends insulating the gap if the sleeve is slightly larger. A sleeve shallower than 20 inches still works, but the unit then sits further out into the room. Source: TCL: choosing a wall sleeve
TCL
8,000 BTU Through-the-Wall Air Conditioner - Cool OnlyThrough-the-wall8,000 BTUCool onlyVoltage not statedNeeds a sleeve at least 26 x 15¾ in. · chassis 24.21 x 14.53 x 20.28 in
TCL
8,000 BTU Through-the-Wall Air Conditioner - Cool/HeatThrough-the-wall8,000 BTUAlso heatsVoltage not statedNeeds a sleeve at least 26 x 15¾ in. · chassis 24.21 x 14.53 x 20.28 in
TCL
10,000 BTU Through-the-Wall Air Conditioner - Cool Only 115VThrough-the-wall10,000 BTUCool only115 VNeeds a sleeve at least 26 x 15¾ in. · chassis 24.21 x 14.53 x 20.28 in
TCL
12,000 BTU Through-the-Wall Air Conditioner - Cool OnlyThrough-the-wall12,000 BTUCool onlyVoltage not statedNeeds a sleeve at least 26 x 15¾ in. · chassis 24.21 x 14.53 x 20.28 in
TCL
12,000 BTU Through-the-Wall Air Conditioner - Cool/HeatThrough-the-wall12,000 BTUAlso heatsVoltage not statedNeeds a sleeve at least 26 x 15¾ in. · chassis 24.21 x 14.53 x 20.28 in
TCL
14,000 BTU Through-the-Wall Air Conditioner - Cool OnlyThrough-the-wall14,000 BTUCool onlyVoltage not statedNeeds a sleeve at least 26 x 15¾ in. · chassis 24.21 x 14.53 x 20.28 in
TCL
14,000 BTU Through-the-Wall Air Conditioner - Cool/HeatThrough-the-wall14,000 BTUAlso heatsVoltage not statedNeeds a sleeve at least 26 x 15¾ in. · chassis 24.21 x 14.53 x 20.28 in
Friedrich WallMaster: fits 27 in. sleeves
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. Source: Friedrich WallMaster product page
Friedrich
Wallmaster 10,000 BTU Through-the-Wall Air ConditionerThrough-the-wall10,000 BTUCool onlyVoltage not statedFits 27 in. sleeves · chassis 27.5 x 17.25 x 23.24 in
Friedrich
WallMaster Through-The-Wall Smart Air Conditioner 10,000 BTU 115VThrough-the-wall10,000 BTUCool only115 VFits 27 in. sleeves
Friedrich
Wallmaster 12,000 BTU Through-the-Wall Air ConditionerThrough-the-wall12,000 BTUCool onlyVoltage not statedFits 27 in. sleeves · chassis 26.5 x 17.25 x 23.24 in
Friedrich
WallMaster Through-The-Wall Smart Air Conditioner 12,000 BTU 115VThrough-the-wall12,000 BTUCool only115 VFits 27 in. sleeves
Not in stock at a retailer we track right now
Friedrich
WallMaster WHVT14B33A 15,200 BTU Inverter (through-the-wall, heat pump)Through-the-wall15,200 BTUHeat pumpVoltage not statedFits 27 in. sleeves · chassis 26.5 in W x 21 in D x 15.75 in H
Not in stock at a retailer we track right now
Friedrich
WallMaster Smart Inverter Through-the-Wall Air Conditioner with Heat Pump 15,200 BTU inThrough-the-wall15,200 BTUHeat pumpVoltage not statedFits 27 in. sleeves
Not in stock at a retailer we track right now
Friedrich
Wallmaster 15,400 BTU Through-the-Wall Air ConditionerThrough-the-wall15,400 BTUCool onlyVoltage not statedFits 27 in. sleeves · chassis 27.5 x 17.25 x 23.25 in
Not in stock at a retailer we track right now
Friedrich Kuhl: fits a window, or a Friedrich Kuhl sleeve of its size
Its cabinet is its sleeve: it goes in a window, or through a wall in an opening sized for its chassis (Q, S, M or L). Friedrich says its sleeve sizes have not changed in over 45 years, so a new Kuhl fits an existing Friedrich sleeve of the same size. Its side air intakes must stay clear, so the wall can be no thicker than Friedrich's limit for that size (8½ in. for Q, 7⅜ in. for S and M, 15⅛ in. for L). Source: Friedrich Kuhl brochure (sleeve sizes)
Friedrich
Kuhl 10,000 BTU Window & Wall Air Conditioner Heat PumpWindow or wall10,000 BTUHeat pumpVoltage not statedKuhl size SFits a window, or a Friedrich Kuhl sleeve of its size · chassis 26 x 16 x 29 in
Friedrich
14,000 BTU Kuhl Window and Wall Air ConditionerWindow or wall14,000 BTUCool onlyVoltage not statedKuhl size MFits a window, or a Friedrich Kuhl sleeve of its size · chassis 25.94 x 17.9375 x 29 in
Friedrich
18,000 BTU Kuhl Window Air ConditionerWindow or wall18,000 BTUCool onlyVoltage not statedKuhl size MFits a window, or a Friedrich Kuhl sleeve of its size · chassis 25.94 x 17.94 x 29 in
Friedrich
Kuhl 22,300 Commercial Window & Wall Air ConditionerWindow or wall22,300 BTUCool onlyVoltage not statedKuhl size MFits a window, or a Friedrich Kuhl sleeve of its size · chassis 25.94 x 17.94 x 29 in
Friedrich
28,000 BTU Kuhl Commercial Window and Wall Air ConditionerWindow or wall28,000 BTUCool onlyVoltage not statedKuhl size LFits a window, or a Friedrich Kuhl sleeve of its size · chassis 28 x 20.19 x 35.5 in
Friedrich
28,000 BTU Kuhl Window AC w/ Heat PumpWindow or wall28,000 BTUHeat pumpVoltage not statedKuhl size LFits a window, or a Friedrich Kuhl sleeve of its size · chassis 28 x 20.2 x 35.5 in
Friedrich
34,800 BTU Kuhl Commercial Window Air Conditioner KCVL36B30AWindow or wall34,800 BTUCool onlyVoltage not statedKuhl size LFits a window, or a Friedrich Kuhl sleeve of its size · chassis 28 x 20.19 x 35.5 in
Not in stock at a retailer we track right now
Friedrich PTAC: fits a standard 42 x 16 in. PTAC sleeve
Fits standard 42 x 16-inch PTAC sleeves, other makers' included, without a baffle kit as long as the sleeve is no deeper than 13¾ inches (a deeper sleeve needs one). A new installation needs Friedrich's PDXWS sleeve and an outdoor grille, sold separately. Source: Friedrich PTAC brochure
Friedrich
7,000 BTU ZoneAire Select PTAC w/ Electric HeatPTAC7,000 BTUElectric heatVoltage not statedFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.5 in
Friedrich
7,000 BTU ZoneAire Premier PTAC w/ Electric Heat - 208-230VPTAC7,000 BTUElectric heat208/230 VFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 13.75 in
Friedrich
7,200 BTU ZoneAire Select PTAC w/ Heat PumpPTAC7,200 BTUHeat pumpVoltage not statedFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.5 in
Friedrich
9,600 BTU ZoneAire Select PTAC w/ Electric Heat - 208-230VPTAC9,600 BTUElectric heat208/230 VFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.5 in
Friedrich
9,600 BTU ZoneAire Select PTAC w/ Heat Pump - 265VPTAC9,600 BTUHeat pump265 VFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.5 in
Friedrich
9,600 BTU ZoneAire Select PTAC w/ Electric Heat - 265VPTAC9,600 BTUElectric heat265 VFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.5 in
Friedrich
10,000 BTU ZoneAire Premier PTAC w/ Electric Heat - 208-230VPTAC10,000 BTUElectric heat208/230 VFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 13.75 in
Friedrich
12,000 BTU ZoneAire Select PTAC w/ Heat Pump - 208-230VPTAC12,000 BTUHeat pump208/230 VFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.5 in
Friedrich
12,000 BTU ZoneAire Premier PTAC w/ Electric Heat - 208-230VPTAC12,000 BTUElectric heat208/230 VFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 13.75 in
Friedrich
12,000 BTU ZoneAire Select PTAC w/ Electric Heat - 208-230VPTAC12,000 BTUElectric heat208/230 VFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.5 in
Friedrich
12,000 BTU ZoneAire Select PTAC w/ Electric Heat - 265VPTAC12,000 BTUElectric heat265 VFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.5 in
Friedrich
12,000 BTU ZoneAire Select PTAC w/ Heat Pump - 265VPTAC12,000 BTUHeat pump265 VFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.5 in
Friedrich
14,500 BTU ZoneAire Select PTAC w/ Heat PumpPTAC14,500 BTUHeat pumpVoltage not statedFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.5 in
Friedrich
14,500 BTU Zone Premier PTAC with Heat PumpPTAC14,500 BTUHeat pumpVoltage not statedFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21 in
Friedrich
9,000 BTU Zone Premier PTAC with Heat PumpPTAC9,000 BTUHeat pumpVoltage not statedFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21 in
Not in stock at a retailer we track right now
Friedrich
9,600 BTU ZoneAire Select PTAC w/ Heat Pump - 208-230VPTAC9,600 BTUHeat pump208/230 VFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.5 in
Not in stock at a retailer we track right now
Friedrich
12,000 BTU Zone Premier PTAC with Heat PumpPTAC12,000 BTUHeat pumpVoltage not statedFits a standard 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21 in
Not in stock at a retailer we track right now
Amana PTAC: fits Amana's 42 x 16 in. PTAC sleeve
Uses Amana's 42 x 16-inch wall sleeve (the industry-standard size) with an outdoor grille. Amana does not state which other makers' sleeves it fits, so check an existing sleeve and grille with Amana before you buy. Source: Amana PTAC wall sleeve page
Amana
K-Series PTAC PTH123K35AXXX 12,000 BTU heat pumpPTAC12,000 BTUHeat pumpVoltage not statedFits Amana's 42 x 16 in. PTAC sleeve · chassis 42 in W x 16.06 in H x 14.13 in D
Not in stock at a retailer we track right now
Frigidaire PTAC: fits a 42 x 16 in. PTAC sleeve
Made for a 42 x 16-inch PTAC sleeve, 13¾ inches deep inside. For a replacement, Frigidaire's installation guide lists which other makers' sleeves it fits, and a Frigidaire sleeve used with another maker's grille needs its baffle kit. Source: Frigidaire FFRP122HT3 spec sheet (hosted by AMG Air)
Frigidaire
FFRP122HT3 12,000 BTU PTAC heat pumpPTAC11,800 BTUHeat pumpVoltage not statedFits a 42 x 16 in. PTAC sleeve · chassis 42 x 16 x 21.75 in
Not in stock at a retailer we track right now
Sleeve fit not confirmed
We could not confirm which sleeve sizes these units fit from their makers' own documents, so we do not guess. Check the maker's installation manual against the inside width and height of your sleeve before you buy.
Frigidaire
8,000 BTU Through-the-Wall Air Conditioner with Heat 115VThrough-the-wall8,000 BTUAlso heats115 VSleeve fit not confirmed by the maker · chassis 24 x 14.5 x 21.5 in
Frigidaire
10,000 BTU 230V Through-the Wall Air Conditioner with HeatThrough-the-wall10,000 BTUAlso heats230 VSleeve fit not confirmed by the maker · chassis 24 x 14.5 x 21.5 in
Frigidaire
10,000 BTU Through-the-Wall Air Conditioner 115V - 230vThrough-the-wall10,000 BTUCool onlyVoltage not statedSleeve fit not confirmed by the maker
Frigidaire
10,000 BTU Through-the-Wall Air Conditioner 230V - 230vThrough-the-wall10,000 BTUCool only230 VSleeve fit not confirmed by the maker · chassis 24 x 14.5 x 19 in
Frigidaire
12,000 BTU Through-the-Wall Air ConditionerThrough-the-wall12,000 BTUAlso heatsVoltage not statedSleeve fit not confirmed by the maker · chassis 24 x 14.5 x 21.5 in
Frigidaire
14,000 BTU 230V Through-the-Wall Air Conditioner with HeatThrough-the-wall14,000 BTUAlso heats230 VSleeve fit not confirmed by the maker · chassis 24 x 14.5 x 21.5 in
Midea
10,000 BTU Through-The-Wall Air ConditionerThrough-the-wall10,000 BTUCool onlyVoltage not statedSleeve fit not confirmed by the maker · chassis 24.2 x 14.5 x 20.3 in
Not in stock at a retailer we track right now
Before you buy
Measure the sleeve, not the old unit
1. Measure the opening
Slide the old unit out and measure the inside of the sleeve: width first, then height and depth. Common residential widths are about 24½, 26 and 27 inches; a PTAC sleeve is 42 inches wide.
2. Match the maker's fit, not the chassis
A chassis is smaller than the sleeve it is made for. LG's units measure about 24 inches wide but are made for 26-inch standard sleeves, and Friedrich's 24¼-inch Uni-Fit chassis for sleeves from 24½ to 27 inches. Use the fit statement beside each unit.
3. Check the outlet
The outlet is already in the wall too. A 115-volt unit uses a standard outlet; a 230-volt unit needs a 230-volt outlet on its own circuit. PTACs run on 208/230 or 265 volts. Where a listing does not state its voltage, check it before you buy.
Common questions
Through-the-wall air conditioners, answered
What size wall sleeve do I have?
Slide the old unit out and measure the inside of the sleeve: its width, then its height and depth. Or read the model number on the old unit's rating plate and look up the sleeve its maker specifies. Residential through-the-wall sleeves are commonly about 24½, 26 or 27 inches wide; PTACs in hotels and apartments use a 42-inch sleeve.
Will a new through-the-wall air conditioner fit my old sleeve?
Only if its maker says it fits that sleeve, and the unit's own size is not a guide. LG's through-the-wall units measure about 24 inches wide yet are made for 26-inch standard sleeves, and Friedrich's 24¼-inch Uni-Fit chassis is made for sleeves from 24½ to 27 inches. Match your sleeve's width, and where the maker gives them its height and depth, against the fit statement shown for each unit here, and expect to swap in the rear grille or trim kit that comes with the new unit.
What is the difference between a through-the-wall air conditioner and a PTAC?
A through-the-wall unit is a room air conditioner made to sit in a wall sleeve and vent out of the back, usually on a standard 115-volt or a 230-volt outlet. A PTAC (packaged terminal air conditioner) is the larger unit used in hotels and apartments: it fits a 42-inch sleeve with an outdoor grille, usually heats with electric heat or a heat pump, and runs on a dedicated 208/230-volt or 265-volt circuit.
Do I need a professional to install a through-the-wall air conditioner?
Not to replace one. Sliding a new unit into an existing sleeve it fits is a job you can do yourself (they are heavy, so plan on two people), with no refrigerant work. A new installation means cutting an opening through an exterior wall and fitting a sleeve, which is contractor work and usually needs a building permit. A PTAC also needs its own 208/230-volt or 265-volt circuit, which is an electrician's job if it is not already there.