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❄️ Stay ahead of the freeze—power your solar system with E100’s ultimate chill defense!
E100 Solar Thermal Heat Transfer Fluid is a premium, pre-mixed 5L solution designed to protect solar heating systems down to -20°C. It combines mono ethylene glycol, inhibitors, and biocide to prevent freezing, corrosion, and microbial growth. Ready to use without dilution, it ensures hassle-free maintenance and optimal system longevity, backed by industry standards and trusted by professionals.




























| ASIN | B08KY2H6RT |
| Batteries Required? | No |
| Batteries included? | No |
| Customer Reviews | 4.5 4.5 out of 5 stars (29) |
| Date First Available | 5 Oct. 2015 |
| Item Package Quantity | 1 |
| Item Weight | 5 kg |
| Manufacturer | Trade Chemicals |
| Manufacturer reference | C100S25 |
| Part Number | C100S25 |
| Size | 5L |
A**A
Product is already diluted
Was reading fluid normally needs diluting but this is already at strength but problem is not enough fluids available to dilution not as required.
A**R
Perfect for my requirements.
Used for topping up solar water heating circuits.
T**L
A really good product and a good price
Used in my solar hot water system very good product .
T**R
E100 Solar Thermal Heat Transfer Fluid 5L
Excellent service...just what I wanted
M**.
The pipes to my solar panels have not frozen up yet
I Iike feeling safe
Trustpilot
2 weeks ago
4 days ago