Wine Guardian TTW04B Classic Through-The-Wall Wine Cellar Cooling Unit
Self-contained through-the-wall unit for an interior wall: 3,760 BTU/h at 75°F, 120 V plug-in, temperature control with a drain line
- All three TTW04B trims are published at the same nominal 3,760 BTU/h at 75°F, so capacity is not what separates them.
- Wine Guardian states the TTW04B Classic is not rated for exterior use and should be installed in an interior through-the-wall application only.
- Wine Guardian states the TTW04B Classic is not compatible with humidifiers, and the trim carries no humidity sensor, so it controls temperature only.
- Wine Guardian publishes the TTW04B Classic as a single-voltage 120/1/60 unit with a standard USA Type B plug, so it is a plug-in unit rather than a hard-wired one.
- 59.3 dBA at six feet sits right at normal conversation, and it is the loudest of the three TTW04B trims: Wine Guardian publishes 59.3 dBA for the Classic against 57.9 dBA for the Sentinel and 56.9 dBA for the Defender.
Wine Guardian TTW04B Classic Through-The-Wall Wine Cellar Cooling Unit is backordered and will ship as soon as it is back in stock.
- Authorized Wine Guardian dealer
- 25 month parts warranty
- 30-day returns, unopened
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Wine Guardian TTW04B Classic Through-The-Wall Wine Cellar Cooling Unit is backordered and will ship as soon as it is back in stock.
Wine Guardian TTW04B Classic: 3,760 BTU/h of Ductless Cooling for a Medium Cellar
The Wine Guardian TTW04B Classic is a self-contained, ductless through-the-wall wine cellar cooling unit with a nominal 3,760 BTU/h at 75°F that controls cellar temperature only. It mounts through an interior wall, runs on a standard 120V outlet, and carries Bluetooth and NFC controls, an eco-friendly refrigerant, and a coated evaporator coil.
The TTW04B Classic is the largest capacity in Wine Guardian's redesigned Through-the-Wall B series and the base trim of that capacity, sitting below the TTW04B Sentinel and the exterior-rated TTW04B Defender. All three share the same nominal capacity. What separates the Classic is what it leaves out: it has no humidity sensor, Wine Guardian states it is not compatible with humidifiers, and it is not rated for exterior use. It is also the loudest of the three at 59.3 dBA and the lowest-priced.
As an authorized Wine Guardian dealer, Wine Guardian Dealer offers the full Through-the-Wall B series with expert selection support. Wine Guardian manufactures these units, and warranty, returns and service run through Wine Guardian.
See the Wine Guardian TTW04B Classic in Action
Watch How the Through-the-Wall Platform Works
See the Wine Guardian Through-the-Wall platform in action, then read the trim notes below for what the Classic does and does not include.
- Through-the-wall installation, no ductwork
- Bluetooth and NFC controls on every trim
- Classic trim controls temperature only, with no humidity sensor
Questions about fit? Call our specialists at (800) 260-1712.
Is the Wine Guardian TTW04B Classic Right for You
The Wine Guardian TTW04B Classic covers cellars up to about 2,000 cubic feet. Wine Guardian sizes the Through-the-Wall B series by heat load rather than by a published cubic-foot rating, so this figure is calculated with Wine Guardian's own cooling calculator at a documented baseline: an 8-foot ceiling, no glass, R-13 walls and floor, R-29 ceiling, a 75°F warmest wall, 80°F air to the condenser and a 55°F cellar.
Unlike the smaller units in the series, the TTW04B replaces no earlier Wine Guardian model, so there is no legacy cubic-foot rating to fall back on and the figure above rests on the calculator alone. Glass walls, a warm adjacent room, poor insulation or a high ambient temperature all pull the usable volume down, sometimes sharply. Treat the figure above as a starting point for the conversation, not a specification.
✓ Ideal For
Larger wine rooms, wine walls and commercial displays on an interior wall, where the collector or operator wants the highest capacity in the Through-the-Wall B series at the lowest price of the three TTW04B trims. It suits do-it-yourself installation between standard wall studs and a cellar that already holds humidity acceptably on its own.
× Consider Another Model If
You want a humidity sensor, which means the TTW04B Sentinel; you need the unit in an exterior wall or a cold space, which means the TTW04B Defender; or your cellar is smaller than this unit is built for, which means the TTW02B Classic below it in the same trim.
Wine Guardian TTW04B Classic Key Features
The TTW04B Classic carries the shared Through-the-Wall B series feature set with temperature control only, and without the humidity sensor fitted to the Sentinel and Defender trims.
| Feature | What it means for your cellar |
|---|---|
| Highest Capacity in the Series | A nominal 3,760 BTU/h at 75°F is the largest published capacity Wine Guardian offers in a through-the-wall unit, so a bigger room does not force you into a ducted or split system. |
| Temperature Control Only | Holds a cellar set point anywhere from 42°F to 75°F. That is the range Wine Guardian's Through-the-Wall Installation and Operation Manual gives for the temperature set point, and the same range Wine Guardian's Through-the-Wall line page says the TTW consistently achieves. Wine Guardian's separate, optional Serving Temperature package is the one it describes as “an extended temperature range from 42°F to 64°F,” intended for consumption-temperature cooling; that is a different specification, not this unit's set-point range. There is no humidity sensor, so humidity is whatever the room and its vapor barrier deliver. |
| Do-It-Yourself Installation | Slides through a wall sleeve or mounts to standard wall studs. Wine Guardian lists the installation level as Do-It-Yourself; a licensed electrician confirms the circuit and a contractor any structural wall work. |
| Coated Evaporator Coil | A corrosion-resistant coated evaporator coil supports durable, reliable long-term performance in a damp cellar. |
| Eco-Friendly Refrigerant | Uses a non-flammable, low global-warming-potential refrigerant meeting current US environmental standards. |
| Bluetooth and NFC Controls | Monitor and adjust the set point from a smart device without opening the cellar door. |
| 120V Plug-In Power | Runs on a standard USA Type B plug at 120/1/60, so no dedicated hard-wired circuit design is needed for the unit itself. |
| Not Humidifier Compatible | Wine Guardian states the TTW04B Classic is not compatible with humidifiers, so any humidification the room needs must be handled separately from this unit. |
Triple fail-safe protection: a condensate overflow switch, a loss-of-charge switch, and an auto-reset high-pressure switch help prevent water damage, protect the compressor, and reduce system downtime.
How Quiet Is the Wine Guardian TTW04B Classic at 59.3 dBA
Wine Guardian rates the TTW04B Classic at 59.3 dBA, measured at six feet. That is right at normal conversation and is the loudest of the three TTW04B trims: Wine Guardian publishes 59.3 dBA for the Classic against 57.9 dBA for the Sentinel and 56.9 dBA for the Defender. Below, that figure sits against everyday sounds.
Because the evaporator side faces the cellar, the practical question is what sits on the other side of the wall. A utility room, garage or closet absorbs the condenser noise. A living room, bedroom or dining room does not. This is the largest unit in the series, and it is the one where that choice of wall matters most. For how that figure compares across the rest of the catalogue, published noise levels across wine cellar cooling models put the rated figures side by side.
Installing the Wine Guardian TTW04B Classic
The TTW04B Classic installs through an interior wall between standard wall studs, supported by a wall sleeve or the included mounting bracket, and exhausts heat into an adjacent ventilated interior space. Wine Guardian does not rate the Classic for exterior use, so both the wall opening and the space receiving the exhaust must be interior. A step-by-step walkthrough of a through-the-wall cooling unit installation covers framing the opening, setting the sleeve and sealing the chassis into the wall.
Wine Guardian TTW04B Classic Specifications: 3,760 BTU/h at 75°F
Every figure below is Wine Guardian's published specification for the TTW04B Classic trim. Wine Guardian publishes a single nominal capacity for this model rather than a capacity range.
Compatible Add-Ons
Wall Sleeve and Hardware
Remote Interface Controller
Exhaust Duct Collar
The Classic trim has no humidity sensor, so a wine cellar humidifier is not an option on this unit; that pairing belongs to the Sentinel and Defender trims. Browse all parts and accessories, or explore related ducted and ductless split systems.
How the Wine Guardian TTW04B Classic Compares to the Sentinel and Defender
All three TTW04B trims are published at the same nominal 3,760 BTU/h at 75°F, so capacity is not what separates them. The four factors below are.
| Decision factor | TTW04B Classic | TTW04B Sentinel | TTW04B Defender |
|---|---|---|---|
| Humidity control | Not included, no humidity sensor | Humidity sensor included | Humidity sensor included |
| Sound at 6 ft | 59.3 dBA | 57.9 dBA | 56.9 dBA |
| Exterior wall and heating | Interior wall only, no heater | Interior wall only, no heater | Exterior-rated condenser and electric heater |
| Chassis depth | 25.8 in | 27.6 in | 33.8 in |
- Choose the TTW04B Classic if the cellar sits on an interior wall and you want the same 3,760 BTU/h at 75°F at the lowest price of the three trims, in the shallowest chassis of the three.
- Choose the TTW04B Sentinel if you want a humidity sensor.
- Choose the TTW04B Defender if the unit must sit in an exterior wall or run in a cold space.
Not ideal for: an exterior wall or a cold space, a cellar that needs active humidity control on the same unit, or a bedroom-adjacent wall where the extra 2.4 dBA over the Defender will be noticed.
Related TTW04B and Classic Models
Still narrowing the configuration? Browse every Wine Guardian through-the-wall wine cellar cooling unit, or step back to all wine cellar cooling units. Sizing by room instead? Compare cooling units for cellars of 1,200 to 2,200 cubic feet across every configuration, the band this unit sits in. Wine Guardian sizes the Through-the-Wall B series by heat load rather than by a published cubic-foot rating, so this figure is calculated with Wine Guardian's own cooling calculator at a documented baseline: an 8-foot ceiling, no glass, R-13 walls and floor, R-29 ceiling, a 75°F warmest wall, 80°F air to the condenser and a 55°F cellar.
Wine Guardian TTW04B Classic Questions
How many cubic feet will the Wine Guardian TTW04B Classic cool?
The Wine Guardian TTW04B Classic covers cellars up to about 2,000 cubic feet. Wine Guardian sizes the Through-the-Wall B series by heat load rather than by a published cubic-foot rating, so this figure is calculated with Wine Guardian's own cooling calculator at a documented baseline: an 8-foot ceiling, no glass, R-13 walls and floor, R-29 ceiling, a 75°F warmest wall, 80°F air to the condenser and a 55°F cellar. The TTW04B has no predecessor model, so no legacy cubic-foot rating supports the figure. Glass, poor insulation or a warm adjacent room reduce it further, so confirm final sizing with a licensed HVAC professional.
Is it a mistake to buy the TTW04B Classic without a humidity sensor?
Not if the cellar already holds humidity on its own. A well-sealed cellar with a proper vapor barrier and no outside air infiltration usually stays inside the acceptable range without active humidity control, and the Classic simply does not intervene either way. In a room this size the risk is larger than on a small cellar, because more volume and more wall area mean more chance of a dry corner, so if the room is above grade, dry in winter, or has a history of corks drying out, the humidity sensor on the TTW04B Sentinel is worth the step up. A licensed HVAC professional should confirm which applies to your room.
Can I connect a humidifier to the Wine Guardian TTW04B Classic?
No. Wine Guardian states the TTW04B Classic is not compatible with humidifiers, and the trim carries no humidity sensor, so it controls temperature only. If you want humidity control managed by the cooling unit itself, the TTW04B Sentinel adds the humidity sensor. Where a room genuinely runs dry, the alternative is a separate standalone humidifier plus a review of the cellar's vapor barrier and air sealing by a licensed HVAC professional or qualified contractor.
Is 59.3 dBA loud for a wine cellar cooling unit?
59.3 dBA at six feet sits right at normal conversation, and it is the loudest of the three TTW04B trims: Wine Guardian publishes 59.3 dBA for the Classic against 57.9 dBA for the Sentinel and 56.9 dBA for the Defender. In practice the number matters less than the wall it sits in: venting into a garage, utility room or closet makes it a non-issue, while a shared wall with a bedroom or dining room does not. The TTW04B Defender is 2.4 dBA quieter at 56.9 dBA if the location is sensitive.
Which TTW04B trim should I buy: Classic, Sentinel, or Defender?
All three deliver the same nominal 3,760 BTU/h at 75°F, so the choice is about what surrounds the unit rather than capacity. Choose the Classic for an interior wall and temperature-only control at the lowest price and the shallowest chassis at 25.8 inches; the Sentinel when you want a humidity sensor; the Defender when the unit must sit in an exterior wall or run in a cold space, where its exterior-rated condenser and electric heater apply.
Can the Wine Guardian TTW04B Classic be installed in an exterior wall?
No. Wine Guardian states the TTW04B Classic is not rated for exterior use and should be installed in an interior through-the-wall application only. It exhausts heat into an adjacent ventilated interior space. For an exterior wall or a cold ambient location, the TTW04B Defender is the trim with the exterior-rated condenser and electric heater.
What electrical supply does the Wine Guardian TTW04B Classic need?
Wine Guardian publishes the TTW04B Classic as a single-voltage 120/1/60 unit with a standard USA Type B plug, so it is a plug-in unit rather than a hard-wired one. Minimum circuit ampacity and maximum overcurrent protection are published in the Wine Guardian specifications sheet and are not reproduced here; a licensed electrician should confirm the circuit, the receptacle and any local code requirements before installation.
Does the Wine Guardian TTW04B Classic replace an older Wine Guardian model?
No. Wine Guardian does not list the TTW04B as the replacement for any earlier through-the-wall model; it is a new capacity step at the top of the Through-the-Wall B series rather than a successor to a discontinued unit. That matters when sizing, because there is no legacy model whose published cellar-volume rating can be carried across to it.
Need Help Confirming the Right Wine Guardian Model?
Not sure whether the TTW04B Classic is sized correctly for your cellar, or whether you need the Sentinel's humidity sensor? Our Wine Cellar Specialists can confirm the right capacity and trim for your space.
Why this model
TTW04B Classic Through-The-Wall key features
-
3,760 BTU/h of cooling
Rated at 75°F condenser air; 3,400 BTU/h at 90°F.
-
Temperature control only
A temperature sensor, with no humidity sensor and no humidifier connection.
-
Drain line, field drain kit supplied
Condensate runs out by a drain line to a floor drain or condensate pump.
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Fits between standard wall studs
Opening up to 14½ x 16¼ in, stud to stud, in an interior wall.
-
Mounting flanges on the unit
Mounts without the EasyMount sleeve, which is sold separately.
-
59.3 dBA at 6 ft
Cellar side, measured six feet from the supply air grille.
Not sure the Wine Guardian TTW04B Classic Through-The-Wall Wine Cellar Cooling Unit is the right size? Enter your room size, insulation and glass to see your cellar's cooling load in BTU/h.
Open the Wine Guardian cooling calculatorSee it in action
See the TTW04B Classic Through-The-Wall in action
Wine Guardian TTW Features and Benefits
Wine Guardian Through-the-Wall Installation Guide
Wine Guardian Through-the-Wall Installation, previous generation
Parts for a working install are ordered separately.
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Complete the TTW04B Classic Through-The-Wall system
Sold separately. Tick what you need — it goes into the cart with the unit.
- 3,760 BTU/h at 75°F
- 120 V plug-in
- 71 lb
SKU: WGTTW04B00SCC1A0000
After you buy
Warranty, returns and help
Wine Guardian warranty: 25 months parts
Warranty service is handled directly by Wine Guardian. We help you find your model, serial number and purchase documents. Standard: 25 months parts and 13 months labor from the original invoice date. Platinum (optional upgrade): 25 months parts and labor, plus the compressor, evaporator coil and condenser coil covered for 61 months (parts only).
Ask us for a free copy of the warranty before you buy.
Free cancellation for 24 hours
Cancel free within 24 hours of placing your order, custom and made-to-order items included: your card is not charged. After 24 hours and before the order ships, a standard order can still be cancelled for 3%, the card-processing fee the payment processor keeps on a refunded payment. Custom and made-to-order items go into production after 24 hours and cannot be cancelled.
30-day returns, unopened
Return an unopened, uninstalled item within 30 days of delivery for a refund or store credit. Contact us first: ship nothing back until we send you an RMA number with the return instructions. A 25% restocking fee applies to returns and exchanges; there is no fee when an item arrives damaged, is defective or the wrong item was sent.
Questions? 1 (800) 260-1712Monday to Friday, 9AM to 9PM EST
Frequently asked questions
TTW04B Classic Through-The-Wall questions
How many cubic feet will the Wine Guardian TTW04B Classic cool?
The Wine Guardian TTW04B Classic covers cellars up to about 2,000 cubic feet. Wine Guardian sizes the Through-the-Wall B series by heat load rather than by a published cubic-foot rating, so this figure is calculated with Wine Guardian's own cooling calculator at a documented baseline: an 8-foot ceiling, no glass, R-13 walls and floor, R-29 ceiling, a 75°F warmest wall, 80°F air to the condenser and a 55°F cellar. The TTW04B has no predecessor model, so no legacy cubic-foot rating supports the figure. Glass, poor insulation or a warm adjacent room reduce it further, so confirm final sizing with a licensed HVAC professional.
Is it a mistake to buy the TTW04B Classic without a humidity sensor?
Not if the cellar already holds humidity on its own. A well-sealed cellar with a proper vapor barrier and no outside air infiltration usually stays inside the acceptable range without active humidity control, and the Classic simply does not intervene either way. In a room this size the risk is larger than on a small cellar, because more volume and more wall area mean more chance of a dry corner, so if the room is above grade, dry in winter, or has a history of corks drying out, the humidity sensor on the TTW04B Sentinel is worth the step up. A licensed HVAC professional should confirm which applies to your room.
Can I connect a humidifier to the Wine Guardian TTW04B Classic?
No. Wine Guardian states the TTW04B Classic is not compatible with humidifiers, and the trim carries no humidity sensor, so it controls temperature only. If you want humidity control managed by the cooling unit itself, the TTW04B Sentinel adds the humidity sensor. Where a room genuinely runs dry, the alternative is a separate standalone humidifier plus a review of the cellar's vapor barrier and air sealing by a licensed HVAC professional or qualified contractor.
Is 59.3 dBA loud for a wine cellar cooling unit?
59.3 dBA at six feet sits right at normal conversation, and it is the loudest of the three TTW04B trims: Wine Guardian publishes 59.3 dBA for the Classic against 57.9 dBA for the Sentinel and 56.9 dBA for the Defender. In practice the number matters less than the wall it sits in: venting into a garage, utility room or closet makes it a non-issue, while a shared wall with a bedroom or dining room does not. The TTW04B Defender is 2.4 dBA quieter at 56.9 dBA if the location is sensitive.
Which TTW04B trim should I buy: Classic, Sentinel, or Defender?
All three deliver the same nominal 3,760 BTU/h at 75°F, so the choice is about what surrounds the unit rather than capacity. Choose the Classic for an interior wall and temperature-only control at the lowest price and the shallowest chassis at 25.8 inches; the Sentinel when you want a humidity sensor; the Defender when the unit must sit in an exterior wall or run in a cold space, where its exterior-rated condenser and electric heater apply.
Can the Wine Guardian TTW04B Classic be installed in an exterior wall?
No. Wine Guardian states the TTW04B Classic is not rated for exterior use and should be installed in an interior through-the-wall application only. It exhausts heat into an adjacent ventilated interior space. For an exterior wall or a cold ambient location, the TTW04B Defender is the trim with the exterior-rated condenser and electric heater.
What electrical supply does the Wine Guardian TTW04B Classic need?
Wine Guardian publishes the TTW04B Classic as a single-voltage 120/1/60 unit with a standard USA Type B plug, so it is a plug-in unit rather than a hard-wired one. Minimum circuit ampacity and maximum overcurrent protection are published in the Wine Guardian specifications sheet and are not reproduced here; a licensed electrician should confirm the circuit, the receptacle and any local code requirements before installation.
Does the Wine Guardian TTW04B Classic replace an older Wine Guardian model?
No. Wine Guardian does not list the TTW04B as the replacement for any earlier through-the-wall model; it is a new capacity step at the top of the Through-the-Wall B series rather than a successor to a discontinued unit. That matters when sizing, because there is no legacy model whose published cellar-volume rating can be carried across to it.
Find the Right System for Your Cellar
Compare the range or talk to us about sizing. Final sizing, electrical and installation should be confirmed with the manufacturer's documentation and a licensed HVAC professional.
