Wine Guardian TTW04B Sentinel Through-The-Wall Wine Cellar Cooling Unit
Self-contained through-the-wall unit for small to mid-sized wine rooms: 3,760 BTU/h at 75°F, 120 V plug-in, humidity sensor built in
- Wine Guardian rates the TTW04B Sentinel at 3,760 BTU/h at 75°F, the largest of the three through-the-wall capacities.
- The Sentinel adds a built-in humidity sensor that lets it work with a Wine Guardian humidifier, and it is rated at 57.9 dBA against 59.3 dBA for the Classic.
- Runs on a standard 120 V, single phase, 60 Hz supply with a Type B plug
- Wine Guardian rates the TTW04B Sentinel at 57.9 dBA measured at 6 feet.
Wine Guardian TTW04B Sentinel 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 Sentinel Through-The-Wall Wine Cellar Cooling Unit is backordered and will ship as soon as it is back in stock.
Wine Guardian TTW04B Sentinel: Highest-Capacity Through-the-Wall Unit with Humidity Sensing
The Wine Guardian TTW04B Sentinel is a self-contained through-the-wall wine cellar cooling unit rated by Wine Guardian at 3,760 BTU/h at 75°F, the highest capacity in the Through-the-Wall B series. It runs on a standard 120 V circuit, carries a built-in humidity sensor and an internal condensate evaporator, and installs between wall studs without ductwork or a separate condensing unit.
The Sentinel is the middle trim of the three TTW04B builds. It adds humidity sensing to the temperature-only Classic while staying an interior-wall unit, where the Defender adds an exterior wall package for units that have to sit on an outside wall. That makes the Sentinel the choice for a finished wine room that needs humidity as well as temperature held steady, on an interior wall, at the largest through-the-wall capacity Wine Guardian builds.
Wine Guardian Dealer is an authorized Wine Guardian dealer. Wine Guardian manufactures the unit and handles warranty, registration and service, and our specialists can help you confirm capacity and configuration before you order.
See the TTW04B Sentinel in Action
Watch How It Works
See how the Wine Guardian Through-the-Wall platform is built and installed, and how the self-contained design keeps a cellar at a steady temperature and humidity.
- Through-the-wall installation, no ductwork
- Built-in humidity sensor and Bluetooth and NFC controls
- Triple fail-safe protection built into the chassis
Questions about fit? Call our specialists at (800) 260-1712.
Is the Wine Guardian TTW04B Sentinel Right for You
The Wine Guardian TTW04B Sentinel cools wine cellars of 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.
Within that envelope, the Sentinel is chosen when the room needs humidity held as well as temperature, and when the unit can sit on an interior wall.
✓ Ideal For
Homeowners, collectors and light-commercial operators with a large wine room, wine wall or display who want temperature and humidity managed from one control, a do-it-yourself through-the-wall installation with no ductwork and no separate condensing unit, and the largest capacity the through-the-wall line offers.
× Consider Another Model If
The unit has to be installed on an exterior wall and exposed to outdoor conditions, in which case the TTW04B Defender carries the exterior wall package. If temperature control alone is enough, the TTW04B Classic covers the same 3,760 BTU/h. If the room is larger than this capacity class, or the compressor noise has to leave the room entirely, a ducted or ducted split Wine Guardian system is the better configuration.
TTW04B Sentinel Key Features and Humidity Sensor
The TTW04B Sentinel pairs the Through-the-Wall B series chassis with a built-in humidity sensor, an internal condensate evaporator and sound reduction foam, which are the features that separate the Sentinel build from the temperature-only Classic. The sensor reads humidity and can drive a connected humidifier, but it does not add moisture on its own, so whether this room needs one is worth settling before the order goes in; when a cellar actually needs a humidifier and when it does not works through the conditions that decide it.
| Feature | What it means for your cellar |
|---|---|
| Humidity Sensor | A combined thermostat and humidistat lets the TTW04B Sentinel work with a Wine Guardian freestanding humidifier, so one control handles temperature and humidity together. |
| Condensate Evaporator | An internal condensate re-evaporation system handles the water the unit pulls out of the air, which often removes the need for a dedicated drain line. |
| Sound Reduction Foam | Wine Guardian lists sound reduction foam on the Sentinel build, which is part of how the unit reaches 57.9 dBA at 6 feet. |
| Extended Temperature Control Range | A control range of 42°F to 75°F covers normal wine storage setpoints and leaves headroom for a cooler serving cellar. |
| Eco-Friendly Refrigerant | A low global-warming-potential, non-flammable refrigerant meets current US environmental standards. |
| Bluetooth and NFC Controls | Setpoints and status can be read and changed from a phone at the unit, without pulling the chassis out of the wall. |
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.
Running cost. Wine Guardian states that the Through-the-Wall line, optimized for energy efficiency, can save you hundreds in electricity costs, on the order of 50–70% of the unit’s cost on average over its lifetime. Wine Guardian bases that estimate specifically on the TTW04B Sentinel at typical US electrical rates, compared with competitive units of similar capacities, so it is the one model in the line the figure was calculated for.
How Quiet Is the Wine Guardian TTW04B Sentinel
Wine Guardian rates the TTW04B Sentinel at 57.9 dBA measured at 6 feet. That is quieter than the TTW04B Classic at 59.3 dBA and slightly louder than the TTW04B Defender at 56.9 dBA, and it is the evaporator-side figure for this specific trim rather than a line-wide number.
Installation Requirements
The TTW04B Sentinel is designed for do-it-yourself installation between standard wall studs. A wall sleeve or the included mounting bracket supports the unit, which slides through the opening and exhausts heat into an adjacent interior space. A step-by-step walkthrough of a through-the-wall cooling unit installation covers how the opening is framed, sleeved and sealed before the unit goes in.
Wine Guardian TTW04B Sentinel Specifications
Wine Guardian publishes the TTW04B Sentinel at 3,760 BTU/h at 75°F, 71 lbs, 57.9 dBA and 27.6 × 14.1 × 15.75 in on a single 120 V supply. Wine Guardian publishes one nominal capacity for this model rather than a capacity range, and directs buyers with different condensing side conditions to its specifications sheet.
Compatible Add-Ons
Wall Sleeve and Hardware
Remote Interface Controller
Exhaust Duct Collar
Wine Cellar Humidifier
The humidifier pairs with the Sentinel’s built-in humidity sensor. Browse all parts and accessories, or explore related ducted and ductless split systems.
How the Wine Guardian TTW04B Sentinel Compares to the Classic and Defender
All three TTW04B trims share the same 3,760 BTU/h at 75°F; the Classic and Sentinel weigh 71 lb, while the Defender trim weighs 78 lb and is 33.8 in long (see each trim's specifications), so the decision is about humidity control, where the unit can be mounted and how loud it is.
| Decision factor | TTW04B Classic | TTW04B Sentinel | TTW04B Defender |
|---|---|---|---|
| Humidity control | Temperature control only | Built-in humidity sensor | Built-in humidity sensor |
| Installation location | Interior wall | Interior wall | Exterior wall package for outdoor-exposed installations |
| Sound level at 6 ft | 59.3 dBA | 57.9 dBA | 56.9 dBA |
| Price tier | Entry | Mid | Top |
- Choose the TTW04B Sentinel if you want humidity sensing on an interior wall and a lower sound level than the Classic.
- Choose the TTW04B Classic if temperature control alone is enough and budget is the deciding factor.
- Choose the TTW04B Defender if the unit has to sit on an exterior wall or you need the lowest sound level in the trio.
Browse every through-the-wall wine cellar cooling unit if the installation type is settled, or choose by room size with the cooling units for cellars of 1,200 to 2,200 cubic feet. The full wine cellar cooling range covers every configuration.
Wine Guardian TTW04B Sentinel Questions
How loud is the Wine Guardian TTW04B Sentinel in a finished room?
The Wine Guardian TTW04B Sentinel is rated at 57.9 dBA measured at 6 feet, which sits between a quiet library and normal conversation. It is the largest of the three through-the-wall capacities, so it is not the quietest unit in the line; the TTW04B Defender is rated at 56.9 dBA.
Where does the Wine Guardian TTW04B Sentinel exhaust its heat?
The TTW04B Sentinel exhausts heat through the wall into an adjacent interior room, which has to be ventilated and large enough to absorb that heat. It is not rated for exterior installation, which is what the TTW04B Defender exterior wall package is for.
Does the Wine Guardian TTW04B Sentinel need a drain line?
The TTW04B Sentinel has an internal condensate evaporator that re-evaporates condensate, so a dedicated drain line is often unnecessary. Wine Guardian notes that a drain connection may be required if the unit exhausts to an unconditioned space or the installed area has an inadequate vapor barrier.
What warranty covers the Wine Guardian TTW04B Sentinel?
Wine Guardian's standard warranty runs 25 months on parts and 13 months on labor. The Platinum warranty extends that to 25 months parts and 25 months labor plus a 36-month parts-only extension on the compressor, evaporator coil and condenser coil, for 61 months in total. Warranty registration and service run through Wine Guardian.
What size wine cellar does the Wine Guardian TTW04B Sentinel cool?
Wine Guardian rates the TTW04B Sentinel at 3,760 BTU/h at 75°F, the largest of the three through-the-wall capacities. Cooling load depends on insulation, glass area, ambient temperature and how the room is used, so confirm final sizing with Wine Guardian's official documentation and a licensed HVAC professional.
What is the difference between the TTW04B Sentinel and the TTW04B Classic?
Both are rated at 3,760 BTU/h at 75°F and both install through an interior wall. The Sentinel adds a built-in humidity sensor that lets it work with a Wine Guardian humidifier, and it is rated at 57.9 dBA against 59.3 dBA for the Classic.
Need Help Confirming the Right Wine Guardian Model?
Not sure whether the TTW04B Sentinel is sized correctly for your cellar, or whether the Classic or Defender fits your wall better? Our Wine Cellar Specialists can confirm capacity and configuration for your space.
Why this model
TTW04B Sentinel Through-The-Wall key features
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3,760 BTU/h of cooling
Rated at 75°F condenser air; 3,400 BTU/h at 90°F.
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Humidity sensor built in
Reads temp, humidity; links a Wine Guardian freestanding humidifier.
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No drain line as shipped
Condensate is re-evaporated inside the unit; the drain tube comes plugged.
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Fits between standard wall studs
Opening up to 14½ x 16¼ in, stud to stud, in an interior wall.
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Heat goes behind the wall
The condenser end exhausts into the next room; a duct collar kit is optional.
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Bluetooth and NFC
Set and read the cellar from a phone with the Carel Controlla app.
Not sure the Wine Guardian TTW04B Sentinel 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 Sentinel 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.
See the complete systemComplete system
Complete the TTW04B Sentinel 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: WGTTW04B00LCS2A0BHF
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 Sentinel Through-The-Wall questions
How loud is the Wine Guardian TTW04B Sentinel in a finished room?
The Wine Guardian TTW04B Sentinel is rated at 57.9 dBA measured at 6 feet, which sits between a quiet library and normal conversation. It is the largest of the three through-the-wall capacities, so it is not the quietest unit in the line; the TTW04B Defender is rated at 56.9 dBA.
Where does the Wine Guardian TTW04B Sentinel exhaust its heat?
The TTW04B Sentinel exhausts heat through the wall into an adjacent interior room, which has to be ventilated and large enough to absorb that heat. It is not rated for exterior installation, which is what the TTW04B Defender exterior wall package is for.
Does the Wine Guardian TTW04B Sentinel need a drain line?
The TTW04B Sentinel has an internal condensate evaporator that re-evaporates condensate, so a dedicated drain line is often unnecessary. Wine Guardian notes that a drain connection may be required if the unit exhausts to an unconditioned space or the installed area has an inadequate vapor barrier.
What warranty covers the Wine Guardian TTW04B Sentinel?
Wine Guardian's standard warranty runs 25 months on parts and 13 months on labor. The Platinum warranty extends that to 25 months parts and 25 months labor plus a 36-month parts-only extension on the compressor, evaporator coil and condenser coil, for 61 months in total. Warranty registration and service run through Wine Guardian.
What size wine cellar does the Wine Guardian TTW04B Sentinel cool?
Wine Guardian rates the TTW04B Sentinel at 3,760 BTU/h at 75°F, the largest of the three through-the-wall capacities. Cooling load depends on insulation, glass area, ambient temperature and how the room is used, so confirm final sizing with Wine Guardian's official documentation and a licensed HVAC professional.
What is the difference between the TTW04B Sentinel and the TTW04B Classic?
Both are rated at 3,760 BTU/h at 75°F and both install through an interior wall. The Sentinel adds a built-in humidity sensor that lets it work with a Wine Guardian humidifier, and it is rated at 57.9 dBA against 59.3 dBA for the Classic.
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.
