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Review on Four Seasons 74678 Heater Valve: Optimal Heating Control for All Seasons by Alex Rea

Revainrating 5 out of 5

The heating control is very simple. Only works backwards

Bought to replace the heater valve on my Studebaker truck that was working really hard. Before driving, the heater under the hood had to be switched on or off. With this valve, controlling the heater is very easy. Just the reverse process. The handle at the entrance is now heated, the outside is heated. But it's great to move on to a more modern piece that actually works.

Pros
  • Closed Four Seasons Wire Operated Heater Valve (74678)
Cons
  • I will add later