Antifreeze Protector Alphi-11

Fernox Antifreeze Protector Alphi-11 is a combined glycol antifreeze and inhibitor. Offering long-term protection against frost, internal corrosion and limescale in heating and chilled water systems, including geothermal systems.
Compatible with all metals and materials commonly used in hydronic systems including aluminum, Antifreeze Protector Alphi-11, is proven to work efficiently and has been tried and tested on installations worldwide and NSF HT1 approved.

  • Avoids the need for winter drain-down
  • Contains mono-propylene glycol
  • Available as full strength and premix
  • Phosphate free
  • Contains an antiscalant to protect against limescale formation
  • Can be used with mains/city water
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Product Code
Gallon Size
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Antifreeze Protector Alphi-11
155738-0005
5 Gallon
Antifreeze Protector Alphi-11
155738-0055
55 Gallon
Antifreeze Protector Alphi-11
155738-0330
330 Gallon
Antifreeze Protector Alphi-11 Premix 30%
174819-0005
5 Gallon
Antifreeze Protector Alphi-11 Premix 30%
174819-0055
55 Gallon
Antifreeze Protector Alphi-11 Premix 30%
174819-0330
330 Gallon
Antifreeze Protector Alphi-11 Premix 35%
244338-0005
5 Gallon
Antifreeze Protector Alphi-11 Premix 35%
244338-0055
55 Gallon
Antifreeze Protector Alphi-11 Premix 35%
244338-0330
330 Gallon
Antifreeze Protector Alphi-11 Premix 40%
174821-0005
5 Gallon
Antifreeze Protector Alphi-11 Premix 40%
174821-0055
55 Gallon
Antifreeze Protector Alphi-11 Premix 40%
174821-0330
330 Gallon
Antifreeze Protector Alphi-11 Premix 45%
244337-0005
5 Gallon
Antifreeze Protector Alphi-11 Premix 45%
244337-0055
55 Gallon
Antifreeze Protector Alphi-11 Premix 45%
244337-0330
330 Gallon
Antifreeze Protector Alphi-11 Premix 50%
175578-0005
5 Gallon
Antifreeze Protector Alphi-11 Premix 50%
175578-0055
55 Gallon
Antifreeze Protector Alphi-11 Premix 50%
175578-0330
330 Gallon
Application, Fitting & Dosing

Alphi-11 Antifreeze Protector can be introduced via the feed and expansion tank, or injected directly into the system via a suitable point (e.g. dosing pot). Introduce into the system after draining off a quantity of water at least equal to the amount of Alphi-11 to be added. Engage the circulating pump and have the system online for a few hours in order to achieve an even distribution.

Package, Handling & Safety

Fernox Antifreeze Protector Alphi-11 is classified as non-hazardous and non-irritant, but as with all chemicals, keep out of reach of children. Do not mix with other chemicals, with the exception of Fernox products. Do not take internally. In case of contact with eyes or skin, rinse immediately with plenty of water.

When do you need Fernox Antifreeze Protector Alphi-11?
How does Fernox Antifreeze Protector Alphi-11 work?

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