10 Best Submersible Pump For Flushing Tankless Hot Water Heater 2025 in the US

1 Our Pick
Superior Pump 91392 Stainless Steel Utility Pump, 1/3 HP Heavy Duty Design
  • High capacity pump moves up to 3300 gallons per hour and lifts water up to 30 feet high.
  • Durable continuous duty motor with thermal protection ensures longer operational life.
  • Constructed with stainless steel for enhanced durability in various environments.
  • Versatile design allows for use in both salt water and fresh water applications.
  • Easy to operate with a simple plug-in design and includes a 25-foot power cord.
  • Removable pump base for convenient cleaning and maintenance of the unit.
2
Chromex Tankless Water Heater Flush Kit with Descaling Solution and Pump
  • Comprehensive kit with bucket, pump, hoses, descaler, and pump grate included.
  • Compatible with most tankless water heater brands for versatility.
  • Uses a safe citric acid-based, non-corrosive descaler solution for cleaning.
  • Effectively cleans most tankless heaters in 30 minutes or less.
  • Backed by a 1-year warranty with hassle-free returns for customer satisfaction.
  • Rated Editor’s Choice with high performance and quality score.
3
Wayne CDU980E 3/4 HP Submersible Sump Pump with Vertical Float Switch
  • Pumps up to 5,490 GPH to effectively keep your basement dry and safe from flooding.
  • Constructed from corrosion-resistant stainless steel and durable cast iron for longevity.
  • Features a top suction design that minimizes clogging and prevents air lock during operation.
  • Easily installs in around 15 minutes without the need for drilling a weep hole.
  • Includes a vertical float switch that is tested to withstand up to 1 million cycles.
  • Available in two styles, offering options to suit different installation needs.
4
6699 Tankless Water Heater Flushing Kit with Sump Pump, Hoses, and Bucket Opener
  • Complete cleaning kit for efficient tankless heater maintenance.
  • 1/6HP energy-efficient motor with thermal overload protection.
  • High flow rate up to 1100 GPH and delivers water 16.5 feet.
  • Easy installation with included hoses and adapters for quick setup.
  • Ergonomic bucket lid opener for safe and effortless opening.
  • Includes two 6′ PVC hoses with washers for optimal performance.
5
WAYNE CDU790 – 1/3 HP Submersible Sump Pump with Vertical Float Switch
  • High pumping capacity of up to 4,600 gallons per hour for basement drainage.
  • Durable construction with corrosion-resistant cast iron and stainless steel materials.
  • Efficient top suction design to prevent air locks and reduce clogging issues.
  • Reliable vertical float switch tested for over 1 million cycles for longevity.
  • Proudly assembled in the USA, ensuring quality and performance you can trust.
  • Includes a 3-year warranty for added peace of mind on your purchase.
6
DrainX Tankless Water Heater Flushing Kit with Descaler Solution and Pump
  • Complete kit with 3.5 gallon bucket, pump, hoses, and descaler solution.
  • Universal compatibility with brands like Rinnai, Bosch, and Rheem.
  • Efficient cleaning process that takes 30 minutes or less.
  • Includes heavy-duty steel hoses for durability and long-lasting use.
  • Safe citric acid descaler, non-toxic to metals and plastics.
  • 1/6 HP submersible pump for effective flushing of water heaters.
7
Superior Pump 91658 Tankless Water Heater Pump Kit with Non-toxic Descaler, 2 Gallon
  • Fully submersible mag drive pump moves up to 810 gallons per hour efficiently.
  • Complete descaler kit includes a 2-gallon pail, hoses, and non-toxic powder.
  • Adjustable control valve allows precise flow control for effective cleaning.
  • Non-clogging thermoplastic impeller ensures smooth operation and durability.
  • Oil-free motor design is environmentally friendly and requires low maintenance.
8
Superior Pump 91660 Tankless Water Heater Descaler Pump Kit with Non-toxic Solution
  • 1/6HP thermoplastic pump moves 1920 gallons per hour, lifts 20 feet high.
  • Deluxe 3.5-gallon pail with a screw top lid; color may vary.
  • Includes 7oz non-toxic descaler powder for effective cleaning.
  • Comes with two 3/4-inch GHT x 6-foot stainless steel hoses included.
  • Features a non-clogging impeller that handles 1/8-inch solids easily.
  • Perfect for descaling tankless water heaters with included tools.
9
Green Expert 1.5HP Submersible Sump Pump 6000GPH for Water Draining
  • 1.5HP motor with 6000GPH capacity handles solids up to 1-1/3 inches.
  • Durable full 304 stainless steel housing for corrosion resistance.
  • Easy installation with multipurpose adapter kits for hoses.
  • Equipped with an automatic float switch for water level control.
  • Portable design with a carrying handle and 25 ft waterproof power cord.
  • Versatile for use in flooded basements, pools, sinks, and hot tubs.
10
Goseoil Tankless Water Heater Flushing Kit with Pump, Hoses, and Pail
  • Includes a powerful 1/2HP submersible utility water pump for efficient flushing.
  • High flow rate of 1500 GPH, ideal for maximum cleaning performance.
  • 23-foot lift capacity, effectively handling solids up to 0.2 inches in size.
  • Featuring color-coded 6-foot hoses for straightforward and easy connections.
  • Enables quick descaling of tankless water heaters in 30 minutes or less.
  • Includes a durable 3.5-gallon pail for convenient water collection during use.

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