Rv Motorhome Water Tanks of 2025
Best Choice1
Clicked 73 times in the last monthRaneinRanein 65,000 BTU RV Tankless Water Heater, High Altitude Available, 12V, CSA Certificated, with Thermostatic Chamber and Multi-function Controller, On Demand Instant Hot Water Heater
Main highlights- 【We've upgraded.】On top of the original. We have upgraded the multi-function remote control. You can view gas usage, voltage, GPM, does anti-freeze device activates, and high altitude available
- 【Steady temperature】Temperature ranges from 95°F-124°F. Built-in constant temperature chamber, no overheating of water due to brief opening and closing. Staged combustion technology controls the amount of flame in summer, prevents the water from getting too hot, and saves the limited propane gas available for caravan travel
- 【Save money and comfort】The a tankless RV water heater with a pressure relief valve built into the unit. You don't have to buy and install it separately. It also comes with a PC 6.6 feet intelligent remote controller. This product does not come with a door and needs to be purchased.
- 【Safety and reliability】Built-in forced exhaust fan on top for stable combustion and automatic gas shut-off in case of accidental flame failure. It has an anti-freeze device that automatically warms up when the temperature falls below 42.8°F to prevent freezing
- 【Replaces all RV water heaters】It has a 12.8 x 12.8" (without door) opening, easy to replace Suburban & Atwood's 6/10/12 gal tank water heaters and your old water heater with appropriate doors. The fitting door kit is available for purchase in 3 sizes: 15" x 15", 15" x 18", or 18" x 18". Door Requires Additional Purchase, Door ASIN: B0D62541MK
- 【Long time bath】Deep fire row design can improve heating efficiency. It can produce up to Max 3.9 GMP hot water and has 65,000 BTU power. It can bring you hot water all the time when there is enough gas and water. There is no need to wait for the water to heat up and take a quick bath like with a tank water heater
- 【Buy with confidence】The RV water heater is CSA certified. When installing, please make sure that the voltage of the RV is 12V. We have a professional service team. If you have any questions, please feel free to contact us. We will solve it for you immediately.
9.9Exceptional
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Value for Money2
Ameri-KartAmeri-Kart 48 Gallon RV Black Water Tank, Leak-Proof RV Water Storage Tank for Toilets in Campers, Trailers, Motorhomes, and RVs, End Discharge, 70" x 28" x 8" (HT-1103)
Main highlights- SPECIFICATIONS: RV black tank dimensions - 70" x 28" x 8"; Check your RV requirements to ensure proper fit; QAI Laboratories certified; Proudly Made in the USA, manufactured by Ameri-Kart in Elkhart County, Indiana - the RV Capital of the World
- OEM QUALITY CONSTRUCTION: This sturdy Ameri-Kart RV water tank is made from weather resistant and impact-resistant plastics for durability; The RV holding tank design prevents leaks and ensures long service life; Built to IAPMO standards
- IMPORTANT INFO: Do not pressurize RV waste tank; It must be vented when in use; Does not include inlet and vent fittings, hardware, mounting hardware, dump/gate valves, piping; Only dump black tank at designated dump stations or waste disposal facilities
- EASY TO INSTALL BLACK TANK: The RV waste water tank includes 3" end discharge outlet; Inlet and vent locations are determined by user during install; It is easy to drill holes to set inlets and vents; High, medium, low sensor probes indicate water level
- 48 GALLON RV WATER TANK: Ameri-Kart waste water tanks are MADE IN USA; This leak-proof black and gray water tank is solid and liquid waste from toilets, sinks, and showers, in recreational vehicles, motor homes, trailers, campers, and tiny houses
9.7Exceptional
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3
SuburbanSuburban Advantage RV Tank Water Heater SW6D – 6 gallon Porcelain Lined Steel Tank with Direct Spark Ignition (DSI) 5238A
9.9 Thermal power9.3 Packaging materials8.9 Easy installationWhy we love it
Heats quickly and efficiently.
Ideal for RV upgrades.
Reliable ignition system.
9.6Exceptional
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4
classAcustomsClass A Customs 40 Gallon RV Waste Black Water Holding Tank WT-4000
Main highlights- NOT INCLUDED Inlet and Vent Fittings / Additional Fittings / Hardware / Mounting Hardware / Dump Valve / Piping NOT INCLUDED
- INSTALLED OUTLET 3” ABS Female Pipe - outlet can not be moved DO NOT over-tighten fittings damage will occur Dump valves do not hook directly to the 3" ABS fitting, from the outlet run PVC or ABS piping (not included), dump valve (not included) is added to the piping.
- INLET & VENT INSTALLATION Class A Customs Black Water Tanks only come with the outlet the end user will determine where the inlet and vent will need to be placed and install, hardware NOT included. TANK MUST BE VENTED allowing air in and out when in use. *DO NOT PRESSURIZE TANK* DO NOT over-tighten fittings damage will occur.
- 40 Gallon RV Waste Water Holding Tank MADE IN THE USA by Class A Customs using Medium Density Polyethylene (MDPE) Resin TANK NOT FOR FRESH OR DRINKING WATER USE – WASTE/GRAY WATER USE ONLY – Used in RV’s Campers, Trailers, Motorhomes and Tiny Houses
9.3Excellent
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5
Camco39% OffCamco Rhino 21-Gallon RV Portable Waste Tank - Features Large Heavy-Duty No-Flat Wheels & Low Drain Hole - Includes Removable Steel Tow Adapter, 3’ Sewer Hose & More RV Accessories (39002)
9.7 Easy installation9.3 worth the money9.3 Simple to useWhy we love it
Portable: Wheels handle for easy transport.
Secure: Ladder hook for secure storage.
Easy to Clean: Low drain hole smooth interior.
9.2Excellent
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6
KohreeKohree RV Water Pump 12V DC 5.5GPM 55PSI and 0.75L 125PSI Pre-Pressurized Accumulator Tank, Quiet RV Water Pump and Accumulator Tank System for RV Camping, Boat, Kitchen, Bathroom
Main highlights- 【Smooth Water Flow】Kohree 4-chamber RV Water Diaphragm Pump provides high volume water flow to 5.5 GPM. And the accumulator tank acts as a buffer, providing a steady water pressure even when the demand fluctuates, ensuring smoother water flow for a consistent user experience. It also prevents surges or drops in pressure that can be potentially damaging to fixtures and appliances
- 【Run Dry & Thermal Overload Protection】Kohree RV Water Pump can run dry for a short period time, reducing the risk of motor burnout. The thermal overload protection function of the motor makes our products safer and can be used longer
- 【Quiet Operation】Equipped with anti-vibration rubber feet and shock-proof iron plate, this set can reduce noise of your water system, operating volume below 45 DB. It can also reduce water pump kicking on, provide a more quiet and pleasant environment, especially in residential or recreational settings like RVs and boats
- 【Features】This set consists of a 4 chamber diaphragm pump 55 PSI with 5.5 GPM water flow, and a 0.75L pre-pressurized accumulator tank. Serves 3 hose adapters, 2 strainers and teflon tape. A fully assembled pressure set that simplifies the installation of water pressure systems for both the professional and amateur installer
- 【Extended Pump Lifespan】By reducing pump cycling, the system minimizes wear and tear on both the pump and other components, leading to fewer maintenance issues and longer service intervals
9.0Excellent
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7
classAcustomsClass A Customs | Under Mount 30 Gallon RV Concession Fresh and Gray Water Holding Tank | UM-3000
Main highlights- WATER TANK MEASUREMENTS: 48” Longest Length (not including fittings) x 8.5” x 20.5” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
- TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and water-tight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT Over-tighten fitting damage will occur – Use plastic threaded fittings, metal threads may damage tank fittings
- NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
- Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
- 30 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
8.9Very Good
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8
classAcustomsClass A Customs | T-4000 | One (1) RV Fresh Water 40 Gallon Tank, Grey Water
Main highlights- WATER TANK MEASUREMENTS: 39 1/2” Longest Length (not including fittings) x 13” x 18” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
- TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
- NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
- Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
- 40 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
8.6Very Good
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9
classAcustomsClass A Customs | T-4600 | One (1) RV Fresh Water 46 Gallon Tank, Grey Water
Main highlights- WATER TANK MEASUREMENTS: 42” Longest Length (not including fittings) x 14” x 18” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
- TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
- NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
- Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
- 46 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
8.4Good
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10
Ameri-KartAmeri-Kart 39 Gallon RV Black Water Tank, Leak-Proof RV Water Storage Tank for Toilets in Campers, Trailers, Motorhomes, and RVs, End Discharge, 70" x 24" x 8" (HT-192)
Main highlights- SPECIFICATIONS: RV black tank dimensions - 70" x 24" x 8"; Check your RV requirements to ensure proper fit; QAI Laboratories certified; Proudly Made in the USA, manufactured by Ameri-Kart in Elkhart County, Indiana - the RV Capital of the World
- OEM QUALITY CONSTRUCTION: This sturdy Ameri-Kart RV water tank is made from weather resistant and impact-resistant plastics for durability; The RV holding tank design prevents leaks and ensures long service life; Built to IAPMO standards
- IMPORTANT INFO: Do not pressurize RV waste tank; It must be vented when in use; Does not include inlet and vent fittings, hardware, mounting hardware, dump/gate valves, piping; Only dump black tank at designated dump stations or waste disposal facilities
- EASY TO INSTALL BLACK TANK: The RV waste water tank includes 3" end discharge outlet; Inlet and vent locations are determined by user during install; It is easy to drill holes to set inlets and vents; High, medium, low sensor probes indicate water level
- 39 GALLON RV WATER TANK: Ameri-Kart waste water tanks are MADE IN USA; This leak-proof black and gray water tank is solid and liquid waste from toilets, sinks, and showers, in recreational vehicles, motor homes, trailers, campers, and tiny houses
8.2Good
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