HVAC Evaporator / Chiller

Battery Evaporator/Chiller — V1.5 & V2.x

The Tesla Roadster battery chiller is the plate-style heat exchanger that links the battery coolant loop to the A/C refrigerant loop. Mounted on the right-hand side of the battery pack on rubber isolation mounts, it transfers heat from the coolant to the refrigerant and acts as the evaporator for the battery side of the A/C system. A weak, leaking, or restricted
chiller will quickly lead to elevated ESS temperatures, power derates, and thermal warnings.

Why these fail

• Age and corrosion — years of exposure to condensate, road spray, and dissimilar metals can corrode the chiller body and fittings.
• Coolant / refrigerant cross-leaks — internal plate failure can contaminate both circuits, triggering A/C and battery cooling faults.
• Internal restriction — debris or oil breakdown can plug passages, reducing battery cooling capacity under load or during charging.
• Mounting and vibration — damaged isolation bushes or brackets can stress fittings and accelerate leaks.

Our solution

• Correct Roadster fitment — This product supports both V1.5 chiller and V2.x chiller configurations as shown in Tesla service documentation.
• Bench-tested assemblies — Each chiller is cleaned, visually inspected, and pressure-tested for leaks before leaving our lab.
• Direct bolt-in — OEM port locations and mounting bosses; interfaces with factory hoses and lines on the RH side of the ESS.

Service & coverage

Replacement requires proper A/C recovery and recharge plus draining and bleeding of the battery coolant loop. We recommend installation by a technician experienced with Roadster thermal systems. While the chiller is out, it is good practice to inspect hoses, isolation mounts, brackets, and nearby wiring for damage.