Why Switch
Brine and glycol were never built to last a decade.
Standard heat-transfer fluids corrode the systems they run through. Our ET- fluids are formulated to protect carbon steel, stainless steel, copper and aluminium in the same loop so the fluid outlasts the maintenance schedule built around replacing it.
Near-zero corrosion, independently tested
Our formulations are tested against carbon steel, stainless steel, copper and aluminium, with corrosion rates verified well inside national standard limits. Existing galvanised systems are assessed and disclosed case by case.
Priced by lifetime, not by drum
Commodity glycol is typically replaced every 3-4 years as corrosion and fouling take hold. Our fluids are formulated for 8–10 years of service in a well-maintained closed loop fewer flushes, less downtime, fewer call-outs.
One coolant, both directions
A single ET- fluid can carry heat in both directions across a wide operating window, replacing split brine-and-steam arrangements and removing the cross-contamination risk that comes with running two separate media.
At a glance
How ET-4 compares to brine and glycol
The same comparison we walk technical buyers through, using independently verified test data rather than marketing claims.
| Calcium chloride brine | Ethylene glycol | ET-4 Coolant | |
|---|---|---|---|
| Corrosivity | Severe corrosion | Corrosion | Basically no corrosion |
| Typical service life | Frequent replacement as corrosion sets in | 3–4 years | 8–10 years in a well-maintained closed loop |
| Metal compatibility | Attacks carbon steel & most metals over time | Corrodes unprotected metals over time | Stainless steel, carbon steel, copper (aluminium in L-grades) |
| Cost pattern | Low upfront, high lifecycle cost from leaks & replacement | Low upfront, recurring replacement & downtime cost | Moderate upfront, lower lifecycle cost from extended service life |
Where the savings actually come from
The fluid is the cheapest part of the bill
A coolant switch gets judged on the price of the drum. The real cost of a corrosive fluid shows up later in maintenance hours, repair bills, replacement fluid, and the downtime around all three. Here’s where the total-cost-of-ownership case actually plays out.
Illustrative reference case built from our standard 3–4 year (glycol) and 8–10 year (ET-4) service-life figures.
