The two best water heater temperature control valves are the Honeywell CM907 and the Rheem SP20245. Here’s a look at how they compare:

Honeywell CM907:

-Price: $50
-Capability: Can control water heaters up to 75 gallons
-Quality: Comes with a one-year warranty
-Real world use cases: Can be used to save energy and money by reducing the amount of time the water heater is on

Rheem SP20245:

-Price: $60
-Capability: Can control water heaters up to 50 gallons
-Quality: Comes with a one-year warranty
-Real world use cases: Can be used to save energy and money by reducing the amount of time the water heater is on

Pros & Cons:

Honeywell CM907:

-Pros: Can control larger water heaters, cheaper price
-Cons: None

Rheem SP20245:

-Pros: Can control smaller water heaters
-Cons: More expensive