Facebook Pixel
Sign-Up Bonus
Get 500 Reward Points instantly when you join.
Redeem Instantly
50 points = $1 off at checkout.
Earn as You Shop
$1 spent = 1 point every time you order.
Member Perks
Unlock exclusive member-only savings and offers.

Register and Earn 500 Reward Points
Toggle Nav
Search
Toggle Nav
Join Our Loyalty Program
main product photo

Rheem-Ruud SP13845B Natural Gas Water Heater Thermostat

Be the first to review this product
Special Price $325.58 Regular Price $361.40
In stock
SKU
SP13845B
The Rheem-Ruud SP13845B Natural Gas Water Heater Thermostat, which is manufactured for natural gas water heaters. It is used to regulate the amount of natural gas that reaches the burner. The water heater temperature is 120 volts. The process by which this operates is that it regulates the supply of natural gas to provide adequate hot water temperature by reading water tank temperatures. This helps in ensuring that there is always a constant and steady supply of Hot water for both the domestic and business use. HVAC experts find it for its reliability, durability, and ease of installation. Some of the benefits include low operating expenses, enhanced safety because of accurate control of the heating process, and improved energy utilization.
Add to Wish List
HVAC Controls, HVAC Valve
Manufacturer:
https://www.partshnc.com/media/catalog/product/s/p/sp13845b.jpg

Specifications

  • Weight:3.89lbs
  • Type: Natural Gas Thermostat
  • Voltage: 120V
  • Gas Type: Natural Gas
Manufacturer Name: Rheem-Ruud
Product Number: SP13845B
OEM Part Number: SP13845B
Product Description: Ng Water Heater Valve
Weight:3.89lbs/1764.47g

Choose the best HVAC equipment parts and supplies from PartsHnC!

  • Same Day Shipping

  • Best Quality And Best Price

  • Wide Range of Inventory

  • Best Customer Service

Have More Questions or Need Help to Place The Order?
Reach us at (866)773-0907 or [email protected]

Reviews
Write Your Own Review
You're reviewing:Rheem-Ruud SP13845B Natural Gas Water Heater Thermostat
Your Rating
Product Questions (2)
Customer Questions
What maintenance is required for the Rheem-Ruud SP13845B Water Heater Thermostat?

Periodically inspect the thermostat housing for heat damage, corrosion, or moisture intrusion that can affect regulation accuracy. Check all wiring and gas control connections to ensure they remain tight and stable during operation. During scheduled water heater servicing, check correct temperature response and confirm smooth modulation of gas flow for better heating performance.

What are common issues with the Rheem-Ruud SP13845B Water Heater Thermostat?

  • Incorrect water temperature control causing overheating or insufficient heating.
  • Gas valve not responding properly to thermostat signals.
  • Internal sensor drift leading to inaccurate temperature regulation.
  • Intermittent burner cycling or failure to ignite.
  • Electrical connection faults causing inconsistent operation.

Installation Steps

Step 1: Turn off gas, electricity, and water supply before starting; ensure area is ventilated for safety.

Step 2: Remove old thermostat, label wires and gas control connections carefully to avoid errors.

Step 3: Position and mount new thermostat securely on water heater bracket using proper tools.

Step 4: Reconnect wiring and gas control lines as per manufacturer diagram, tighten fittings, ensure secure seals.

Step 5: Restore supply, test ignition, check temperature control and inspect for gas leaks, monitor operation closely.