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Advantage indoor glycol units share the same mechanical-room installation as an indoor water chiller, but the evaporator, pump and piping are rated for glycol service and sized to hold the required freeze-protected temperature. They're the right call whenever the process fluid temperature itself needs to run below 32°F, whether or not the unit is ever exposed to freezing weather.
Single-zone models deliver one fluid temperature to the whole loop; dual-zone models produce two independent temperatures from one chiller frame, which is common in food and beverage plants running both a colder product-cooling loop and a milder jacket or CIP-return loop from the same room.
See the BG series for the full part-number line-up of Advantage indoor glycol models on this page, plus every outdoor model; a brewery running multiple tanks off one chiller may also want the BC-SCC tank control cabinet to give each tank its own independent setpoint from that one loop.
- 1.5 to 210 HP, single or dual zone
- Rated for glycol service throughout - evaporator, pump and piping
- Common in breweries, dairies and other sub-freezing process loops
| Configuration | Range | Notes |
| Single Zone | 1.5 to 210 HP | One glycol temperature plant-wide |
| Dual Zone | 1.5 to 210 HP | Two independent glycol temperatures from one frame |
| Glycol Type | Propylene (food-grade) or ethylene | Propylene standard for food/beverage contact risk |
Sizing the Glycol Mix
The glycol percentage in the loop is set by the coldest leaving fluid temperature the system needs to reach, not by a round-number habit - a 25°F brewery glycol loop needs a meaningfully higher glycol concentration than a 40°F dairy loop, and running more glycol than the application requires just adds pumping cost and reduces heat-transfer efficiency for no benefit. Food-grade propylene glycol is the default in any application with a food or beverage contact risk; industrial ethylene glycol is reserved for closed loops with no such risk, at a lower cost per gallon.
Reservoir sizing on an Advantage indoor glycol unit also has to account for the glycol solution's lower specific heat relative to plain water - the factory sizes the reservoir and pump to the specified mix, which is another reason to confirm glycol type and percentage before, not after, the unit ships.
Before You Request a Quote
Glycol sizing depends on the mix as much as the tonnage:
- Required leaving fluid temperature and single- vs. dual-zone need
- Glycol type - food-grade propylene or industrial ethylene
- Target glycol percentage, or the freeze point you need to protect against
- Mechanical room dimensions and available electrical service
- Number of tanks or loops the chiller will feed
