Ventwerx are your experts in wine cellar cooling in Los Gatos, San Jose, Cupertino, Santa Clara and the South Bay. We can recommend the best cooling system for your wine room, install the cooling system, and perform any necessary maintenance.
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San Jose WINE Cellar COOLING

Ventwerx is a San Jose HVAC company that is experienced in wine cellar cooling installation, and wine cellar cooling repair and maintenance.

Unlike many of our competitors, we have the knowledge and experience to set up an ideal wine cellar cooling system for your home or business.

Wine cellars have different cooling requirements than regular residential or commercial air conditioning. We can help you create a properly designed wine cellar, with temperate and humidity properly calibrated, so your investment is protected for years to come.

Most residential HVAC companies are unaware of the special requirements for wine cellars, sometimes installing inadequate cooling units.

Our team of professionals at Ventwerx can help you choose and install a wine cellar cooling system that is optimized for your needs, and designed for long-term reliability.

Wine Room Cooling Systems

Wine cellar cooling falls in an area somewhere between air conditioning and refrigeration. The wine cellar cooling systems used are different than residential air conditioning units.

These may sometimes also be called wine refrigeration units, chillers, or wine cellar cooling units. We can make expert recommendations on what units to install based on your needs, square feet and layout of your wine cellar.

We are experts in installing CellarPro wine cellar cooling systems.


We specialize in installing self-contained cooling systems and split-system cooling units for your wine cellar or wine room.

We’re builder-friendly. If you have a new construction project, we can make recommendations for what cooling system to install (and take care of the installation and ducting).

We serve Sunnyvale, Los Gatos, Los Altos, Mountain View, Saratoga, San Jose, Cupertino, Santa Clara and the rest of Silicon Valley.

We install self-contained and slplit-systems for wine cellars. Need shelving or racks designed? We can give you a referral. We have the HVAC handled.

The Four Main Factors of Optimal Wine Cellar Design

A properly designed and calibrated wine cellar cooling system will ensure your wine ages properly and your investment is preserved.

Here are the four factors:


In simplest terms, the warmer the wine room, the faster the wine will age. The cooler the room, the slower the wine will age. The temperature must also maintain a steady, even level.

Fluctuations in the room temperature are not good for the aging process of the wine.

Wine Cellar Cooling is Different From Regular Air Conditioning

Why can’t you simply put a regular AC unit in your wine cellar? Or use a separate duct from your central air-conditioning?

While conventional air conditioning works well for the rest of your home, your wine cellar requires a carefully planned setup. The main reason being is that the vintage bottles in your wine cellar are meant to be stored a certain temperature range, and conventional residential air conditioning isn’t built for that purpose.
Your regular home air conditioning is meant to cool the room down to a consistent 65 degrees, at the lowest end, 60 degrees. However, wine needs to be stored at a lower temperature in order to age properly, without adverse effects.

Wine cellars generally must maintain a consistent 55 degrees.

Even though your home AC unit feels cool, the wine cellar must be cooled to an even lower temperature. If the wine cellar air temperature is above that 55-degree mark, it can accelerate the aging process of the wine, which is undesirable.

The cooling units in a wine cellar cool the air at a slower rate than traditional residential air conditioning, helping preserve the wine. In especially dry climates, a humidification unit may also be added to help maintain the proper air humidity.

wine cellar


Besides temperature, perhaps the most important factor in a well-designed wine cellar cooling system is the humidity level.

Residential air conditioning units are designed to remove the moisture from the air, giving the room a dry, cool feel. While removing the humidity from the rest of your home makes us feel comfortable, this is detrimental to long-term wine storage.

In a wine cellar, you need some humidity – about 60-80%.

The humidity has a direct effect on the corks in the wine bottle. Too little humidity, and the corks will dry out and contract, meaning the wine can spoil due to exposure to the air. At the same time, there can’t be too much humidity in the wine room, or mold can form in the wine cellar.


There also needs to be adequate ventilation in a wine cellar, and no pungent or odorous items should be stored in the wine room. The corks in the bottles have a certain degree of porousness – meaning scents from the air in the room can be transmitted to the wine. In other words, don’t store bottle of perfume or sacks of onions in your wine cellar lest the wine picks up those flavors.


Direct sunlight can damage wine over time. Low lighting, or relative darkness is how wine should be stored.

If you need wine cellar design or shelving, we can refer you to one of our trusted Ventwerx partners. We specialize in installation of wine cellar cooling systems.

Types of Wine Cellar Cooling

Wine cellar cooling systems can vary drastically by the needs of the project.

Some of the variables include the way they vent, total system cost, amount of noise the system produces, installation method, and anticipated lifespan of the system.

Below, we look at the three main types of wine cellar cooling systems.

If you would like a consultation on which type of cooling system is right for your wine cellar, contact us here, or call us at (408) 422-2987.

Forced Air Wine Cellar Cooling

This is the most basic type of wine cellar cooling unit, sometimes referred to as a through-the-wall cooling unit. These units are cost effective and can be installed relatively easily into a sheet rock wall.
It is important to note that forced air cooling units cannot vent to the outside, but rather, can only vent to an adjacent room that is larger than its maximum cooling capacity. It is inadvisable to vent the air into a room primarily used for living space.

Forced air systems usually have a lifespan of 5 to 8 years, which is substantially less than ducted or split cooling systems.

Through-the-wall cooling units also produce more noise than ducted or split systems, so that should be a consideration when choosing a wine room cooling system.

Ductable Wine Cellar Cooling

Ductable cooling systems are a step up from the forced air systems in cost, lifespan, and functionality. These ducted systems share some commonalities with the forced air systems. Both are self-contained, with the compressor and evaporator contained in the same housing.

The ductable cooling systems can be converted to fully-ducted systems, meaning they can be set up in a remote mechanical or storage room. This allows you to vent the warm air to the outside or another room, while ducting the cool air into the wine cellar. The ducting can run about 10 to 25 feet, depending on the unit.

Though the ductable wine room cooling systems cost more than the forced air systems, they last longer, usually between 12 and 20 years. They also run more quietly than through-the-wall systems.

Split System Wine Cellar Cooling

This is the option with the most stability, longest lifespan, and most features. Split system wine room cooling system can be ductless or ducted. Ductless systems are more common than ducted. The split systems usually cost the most, run the quietest, and last the longest – between 15 and 25 years on average.

How the split system wine cellar systems work is as follows. A separate condense is placed in an external area, like a mechanical room. Two refrigeration pipes run from the condenser to the evaporator, which is usually mounted on the wine cellar wall. These refrigeration lines can be up to 90 feet away, giving you lots of options for installation.

If the split system is ducted, those two refrigeration lines connect to an air handler, which is ducted into the wine cellar. This is usually only necessary in a large wine cellar.

The biggest upside is split cooling systems maintain temperature and humidity more consistently than forced air and ductable systems. This means the wine in your cellar ages at the proper rate, not at risk of spoilage due to adverse conditions.

The only downside is the initial installation of the split system will be more than the other two types of cooling systems. This is because the refrigeration lines have to be run, and charged with refrigerant. If you can afford this investment, the split systems are the best overall choice for wine cellar cooling.


There are numerous factors that go into choosing a wine room cooling system, such as the size of the room, venting options, local climate, and your overall budget.

If you are planning a wine cellar for your home or business in Los Gatos, Saratoga, Santa Clara, San Jose, or anywhere else in the South Bay, give us a call at (408) 422-2987, or contact us and we can help you assess your options and build a win cellar cooling system that is perfect for your needs.