Frequently Asked Questions
Q: What is the proper glycol to water percentage or mixture?
G&D Chillers recommends a 35% Inhibited Propylene Glycol to 65% water (24.75 brix). Measure the solution using a glycol refractometer.
Q: What is Glycol?
Glycol is an antifreeze. There are two main types of glycol: propylene and ethylene. In food applications propylene glycol is used as it is non-toxic. Ethylene glycol is typically used in industrial type applications.
Q: Where do I set or install my chiller?
The chiller location is typically outside on a concrete pad. They can be installed on the roof of your building, but that requires a roof capable for supporting the chiller operating weight. We do not recommend installing a chiller indoors in most applications.
Q: What is the lead time to build my new chiller?
This varies depending on the time of year. A typical lead time is 4-6 weeks.
Q: How much maintenance does a package chiller require?
Maintenance is minimal. Measure the glycol mixture quarterly throughout the year. Keep the condenser clear of obstructions and free of leaves and debris. It is good to establish a relationship with a qualified technician in your area. Yearly inspections after the first or second year are a good idea. G&D partners with multiple service companies throughout the country if you need a recommendation.
Q: Do you provide consultation on how to pipe my glycol supply and return and tanks?
We will fully design and size your supply and return mainline with the purchase of your chiller. We work directly with you and your team to ensure that the system is installed correctly. Contact us directly to discuss our pre-insulated piping options.
Q: What size chiller do I need?
There are many variables involved with the sizing of a Glycol Chiller. We have a team ready to ask you the questions to determine your precise requirements.
Q: What is a BTU?
British Thermal Unit: The amount of energy needed to cool or heat one pound of water by one degree Fahrenheit.
Q: What does it mean when someone says you need a 5 ton chiller?
A refrigerated ton is a measurement of BTUs, where 1 ton = 12,000 BTU/hr. It is important to know how many BTUs a particular chiller can produce at your required leaving glycol/water temperature.
Q: Is a 5 HP chiller the same as a 5 ton chiller?
NO. This is where it can sometimes get confusing. At air conditioning temperatures a 5 HP compressor can produce close to 5 tons of cooling. However, if your application requires a lower glycol fluid temperature, that same 5 HP compressor will produce less BTUs/tons. This means more horsepower is required to produce 5 tons at those lower temperatures.