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Your cart is empty.Star brite Boiler System Antifreeze is a an ethanol-free, safe, odorless, tasteless, and non-flammable premium hyrdronic heating and cooling system fluid. Made from virgin propylene glycol (PG), this heat transfer fluid contains premium corrosion inhibitors to protect internal components. It’s formulated to have a high specific heat and boiling point, and provides burst protection down to -100°F (-73°C) at full strength. Works in Aqua-Hot and Hydro-Hot systems as a heat transfer fluid, and is perfect for use in traditional boilers, closed boilers, and solar systems.
Lloyd
Reviewed in the United States on February 8, 2025
This is the boiler fluid for topping off an Aqua Hot system. It is concentrated, so be sure to dilute it with demineralized water as necessary. If your RV has an Aqua Hot you will need this sooner or later.
Dean P.
Reviewed in the United States on January 7, 2025
Perfect product for my 450D AquaHot unit in our motorhome. Will be purchasing this again as needed.
mischacooks
Reviewed in the United States on July 26, 2024
I always use Star Brite in my boiler!
Claude
Reviewed in Canada on July 14, 2024
Produits de bonne qualité.
G.M.
Reviewed in the United States on February 23, 2024
I gave this Starbrite Boiler Fluid only 2 Stars due to the poor shipping method. The product its self is an excellent product. Up Date 3/12/24. Purchased 3 more gallons for our Aqua Hot system. This time both of my orders shipped via UPS and The shipping time was excellent.
Steven
Reviewed in the United States on November 3, 2024
It does the job
Ken
Reviewed in the United States on October 31, 2024
used on my Aqua Hot system boilerGreat product
Karen Berard
Reviewed in the United States on January 31, 2024
A little pricey …… especially since it’s going down the drain …… I suppose it works good.
Client d'
Reviewed in Canada on August 8, 2023
Aqua Hot
Rick Franzen
Reviewed in Canada on August 18, 2023
Good but costly
pete
Reviewed in Canada on March 7, 2023
Amazon diliver very fast I am happy .
KipGardiner
Reviewed in Canada on November 9, 2023
I have a combo boiler that heats my house and it had 13 year old glycol in it. I knew it had to be changed and this stuff seems to work well in it. I flushed the old stuff out and refilled with this and it's good to -20C. Would recommend.
Joseph G. Utasi
Reviewed in the United States on October 5, 2023
I have a solar (water) in floor radiant heating system, and I live in SC. I only need protection down to 30 degrees, so I can DILUTE it according to the chart printed on the label. 2 gallons mixed with water gives me the protection I need! And it's EASY on my low power pumps systems as well!
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