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20 Best Hot Water Heater For Hard Water (2022 Updated)

A hot water heater for hard water is a device that is installed on your water line that will help to remove the hardness from your water. This is done by exchanging the calcium and magnesium ions in the water for sodium ions.

This will help to soften the water and make it easier to use.

20 Best Hot Water Heater For Hard Water

Product Image Product Name Features Price

Bosch Tronic 7738004996 2.5-Gallon Electric Mini-Tank Water Heater

  • 2.5 Gallon

Rinnai RUR199iN 199,000 BTU Indoor Natural GAS Tankless Water Heater

  • Professional installation required; call 84-GO-Rinnai for assistance.
  • ENERGY STAR Qualified with Uniform Energy Factor of .93.

Ecosmart Eco 11 Electric Tankless Water Heater

  • Provides continuous hot water for ultimate convenience.
  • Patented Self Modulating technology and design.

Stiebel Eltron Tempra 24 Plus Tankless Electric Water Heater

  • 24 Plus Tankless

Rheem RTG-70XLN-1 Outdoor Natural GAS Tankless Water Heater

  • Outdoor 9.5 Gpm / 7.0 Gpm

Reliance Natural GAS Water Heater 40 gal.

  • 35,500 BTU Input For Faster Recovery
  • Electronic Gas Control Valve
  • Piezo Igniter Allows For Easy One-Hand Pilot Ignition Without Matches

Bradford White RG275H6N High Recovery 75 Gallon Hot Water Heater

  • Advanced Temperature Control System.
  • Microprocessor constantly monitors and controls burner operation to maintain consistent and accurate water temperature levels. Intelligent Diagnostics.

Gladiator 50 gal. Tall 12 Year 5500/5500 Watt Smart Electric Water Heater with Leak Detection and Auto Shutoff

  • 12 Year 5500/5500-Watt

Rheem Performance Platinum 40 gal. Tall 12 Year 40,000 BTU Natural GAS Tank Water Heater

  • 40 Gal / 12 Year 40,000 Btu

Ariston Andris Lux Eco 15L Oversink Electric Water Heater 2.5Kw with A Titanium Enamelled, A Class ERP Rating, Copper HEATING Element, Manufactured T

  • 15 L

A.O. Smith Signature 100 40-gallon Short 6-Year Limited Warranty 4500-Watt Double Element Electric Water Heater | E6-40R45DV

  • 40 Gallon

Rheem Performance Platinum 40 gal. Short 12 Year 38,000 BTU Natural GAS Tank Water Heater

  • 40 Gal / 12 Year 38,000 Btu

Bradford White RG240S6N Short 40 Gallon Hot Water Heater

  • 40 Gallon

GE GE40T10BAM 40 Gallon Electric Water Heater

  • Two 5500 W heating elements quickly increase water temperature for hot water when you need it Heating Elements
  • Ultra-durable stainless-steel heating elements resist rust and corrosion Anode Sensing

GE GE30T10BAM 30 Gallon Electric Water Heater

  • Two 5500 W heating elements quickly increase water temperature for hot water when you need it Heating Elements
  • Ultra-durable stainless-steel heating elements resist rust and corrosion Anode Sensing

A.O. Smith Signature 500 55-Gallon Tall 12-Year Limited Warranty 5500-Watt Double Element Smart Electric Water Heater EE12-55H55DVF.

  • 55 Gallon

GE GE40T08BAM 40 Gallon Electric Water Heater

  • live comfortably with plenty of hot water this quality unit delivers a high volume of fully heated water. Real Capacity.

GE GE30S08BAM 30 Gallon Electric Water Heater

  • live comfortably with plenty of hot water this quality unit delivers a high volume of fully heated water. Real Capacity.
Bosch Tronic 7738004996 2.5-Gallon Electric Mini-Tank Water Heater
  • 2.5 Gallon
Rinnai RUR199iN 199,000 BTU Indoor Natural GAS Tankless Water Heater
  • Professional installation required; call 84-GO-Rinnai for assistance.
  • ENERGY STAR Qualified with Uniform Energy Factor of .93.
Ecosmart Eco 11 Electric Tankless Water Heater
  • Provides continuous hot water for ultimate convenience.
  • Patented Self Modulating technology and design.
Stiebel Eltron Tempra 24 Plus Tankless Electric Water Heater
  • 24 Plus Tankless
Rheem RTG-70XLN-1 Outdoor Natural GAS Tankless Water Heater
  • Outdoor 9.5 Gpm / 7.0 Gpm
Reliance Natural GAS Water Heater 40 gal.
  • 35,500 BTU Input For Faster Recovery
  • Electronic Gas Control Valve
  • Piezo Igniter Allows For Easy One-Hand Pilot Ignition Without Matches
Bradford White RG275H6N High Recovery 75 Gallon Hot Water Heater
  • Advanced Temperature Control System.
  • Microprocessor constantly monitors and controls burner operation to maintain consistent and accurate water temperature levels. Intelligent Diagnostics.
Gladiator 50 gal. Tall 12 Year 5500/5500 Watt Smart Electric Water Heater with Leak Detection and Auto Shutoff
  • 12 Year 5500/5500-Watt
Rheem Performance Platinum 40 gal. Tall 12 Year 40,000 BTU Natural GAS Tank Water Heater
  • 40 Gal / 12 Year 40,000 Btu
Ariston Andris Lux Eco 15L Oversink Electric Water Heater 2.5Kw with A Titanium Enamelled, A Class ERP Rating, Copper HEATING Element, Manufactured T
  • 15 L
A.O. Smith Signature 100 40-gallon Short 6-Year Limited Warranty 4500-Watt Double Element Electric Water Heater | E6-40R45DV
  • 40 Gallon
Rheem Performance Platinum 40 gal. Short 12 Year 38,000 BTU Natural GAS Tank Water Heater
  • 40 Gal / 12 Year 38,000 Btu
Bradford White RG240S6N Short 40 Gallon Hot Water Heater
  • 40 Gallon
GE GE40T10BAM 40 Gallon Electric Water Heater
  • Two 5500 W heating elements quickly increase water temperature for hot water when you need it Heating Elements
  • Ultra-durable stainless-steel heating elements resist rust and corrosion Anode Sensing
GE GE30T10BAM 30 Gallon Electric Water Heater
  • Two 5500 W heating elements quickly increase water temperature for hot water when you need it Heating Elements
  • Ultra-durable stainless-steel heating elements resist rust and corrosion Anode Sensing
A.O. Smith Signature 500 55-Gallon Tall 12-Year Limited Warranty 5500-Watt Double Element Smart Electric Water Heater EE12-55H55DVF.
  • 55 Gallon
GE GE40T08BAM 40 Gallon Electric Water Heater
  • live comfortably with plenty of hot water this quality unit delivers a high volume of fully heated water. Real Capacity.
GE GE30S08BAM 30 Gallon Electric Water Heater
  • live comfortably with plenty of hot water this quality unit delivers a high volume of fully heated water. Real Capacity.

1. Bosch Tronic 7738004996 2.5-Gallon Electric Mini-Tank Water Heater

Bosch Tronic 7738004996 2.5-Gallon Electric Mini-Tank Water Heater

  • 2.5 Gallon

Check Latest Price

Sold By Price
Amazon.com
eBay
Walmart – Logan Trading LLC
Home Depot

Product Details

Specifications

Details
Voltage 120 volt
Minimum Temperature 65 deg. F
Maximum Temperature 145 deg. F
Assembled Length 10-3/4 in.
Wall Mountable Yes

Reviews From Real Customers

eben133
JDP
KJ Handyperson

2. Rinnai RUR199iN 199,000 BTU Indoor Natural GAS Tankless Water Heater

Rinnai RUR199iN 199,000 BTU Indoor Natural GAS Tankless Water Heater

  • Professional installation required; call 84-GO-Rinnai for assistance.
  • ENERGY STAR Qualified with Uniform Energy Factor of .93.
  • Save time with hot water whenever and wherever you need it, any size home, even for simultaneous uses at multiple fixtures.
  • Save energy and reduce utility costs by operating only when hot water is needed.

Check Latest Price

Sold By Price
Amazon.com – Seller
ACWholesalers.com
Supply Online
WWCSupply.com

Product Details

Specifications

Details
Fuel Type Liquid Propane (LP)
Fuel Type Natural Gas (NG)

Reviews From Real Customers

Bmac
Notsohot1769
Bmac9572

3. Ecosmart Eco 11 Electric Tankless Water Heater

Ecosmart Eco 11 Electric Tankless Water Heater

  • Provides continuous hot water for ultimate convenience.
  • Patented Self Modulating technology and design.

Check Latest Price

Sold By Price
Amazon
eBay
Walmart
Ace Hardware

Product Details

Specifications

Details
Assembled Depth (in) 3.75 in
Assembled Height (in) 12 in
Assembled Width (in) 9.75 in
Assembled Weight (lbs) 7 lbs
Item is Shipped at this Packaging Level Y

Reviews From Real Customers

richardtp727
Shane McDoogle
lawraus2014

4. Stiebel Eltron Tempra 24 Plus Tankless Electric Water Heater

Stiebel Eltron Tempra 24 Plus Tankless Electric Water Heater

  • 24 Plus Tankless

Check Latest Price

Sold By Price
Amazon
SupplyHouse.com
PoshHaus
Wholesale Home

Product Details

Specifications

Details
Temperature (Minimum) 68° F
Temperature (Maximum) 140° F
Vent Type Vent Free
Amperage 100A
Voltage 240V

Reviews From Real Customers

ChristianMC
Sklewis
Brian Lackie

5. Rheem RTG-70XLN-1 Outdoor Natural GAS Tankless Water Heater

Rheem RTG-70XLN-1 Outdoor Natural GAS Tankless Water Heater

  • Outdoor 9.5 Gpm / 7.0 Gpm

Check Latest Price

Sold By Price
Amazon
Rheem Tankless Heaters
Wayfair
Big Frog Supply

Product Details

Specifications

Details
Fuel Type Natural Gas
Water Connection 3/4″
Voltage 120V
Amperage 2A
Activation GPM 0.4

Reviews From Real Customers

Brandon M.
Joan and Tom E
Carl S

6. A.O. Smith GCR-50 Promax Plus High Efficiency GAS Water Heater, 50 Gal

A.O. Smith GCR-50 Promax Plus High Efficiency GAS Water Heater, 50 Gal

Check Latest Price

Sold By Price
Amazon
AF Supply
eComfort.com
SupplyHouse.com

Product Details

Specifications

Details
Height (Inches) 60-3/4
Width (Inches) 22″
Diameter 22″
Product Warranty 6 Years Tank / Parts Warranty
Water Heater Type Residential

Reviews From Real Customers

Hammer1974
Sonja Dakhu
Mike G

7. Reliance Natural GAS Water Heater 40 gal.

Reliance Natural GAS Water Heater 40 gal.

  • 35,500 BTU Input For Faster Recovery
  • Electronic Gas Control Valve
  • Piezo Igniter Allows For Easy One-Hand Pilot Ignition Without Matches
  • PEX Dip Tube
  • Environmentally-Friendly Non-CFC Foam Insulation

Check Latest Price

Sold By Price
Amazon
Walmart – Max Warehouse
Blain’s Farm & Fleet
Ace Hardware

Product Details

Specifications

Details
Warranty 6 yr
Low NOx Burner Yes
Maximum Temperature 155 F
Height 62 in.
Tankless No

Reviews From Real Customers

jblo
Consumer Watch
Catlover

8. Bradford White RG275H6N High Recovery 75 Gallon Hot Water Heater

Bradford White RG275H6N High Recovery 75 Gallon Hot Water Heater

  • Advanced Temperature Control System.
  • Microprocessor constantly monitors and controls burner operation to maintain consistent and accurate water temperature levels. Intelligent Diagnostics.
  • Flashing green LED provides positive indication that pilot is on. Separate Immersed Thermowell.
  • Vitraglas Lining.
  • 3/4″ NPT tappings that allow easy connections for space heating applications (potable water only). Non-CFC Foam Insulation.

Check Latest Price

Sold By Price
Amazon
SupplyHouse.com
Surplus City Liquidators
Ferguson

Product Details

Specifications

Details
AFUE 80.00
Application Residential
Capacity 75 gal
Diameter 26 in
Drain Location Bottom, Front

Reviews From Real Customers

Renae007
John the diy loser
Mohsen

9. Gladiator 50 gal. Tall 12 Year 5500/5500 Watt Smart Electric Water Heater with Leak Detection and Auto Shutoff

Gladiator 50 gal. Tall 12 Year 5500/5500 Watt Smart Electric Water Heater with Leak Detection and Auto Shutoff

  • 12 Year 5500/5500-Watt

Check Latest Price

Sold By Price
eBay – outlet_wagon

Product Details

Reviews From Real Customers

akirchner
Gordo72
Pocono Pete

10. Rheem Performance Platinum 40 gal. Tall 12 Year 40,000 BTU Natural GAS Tank Water Heater

Rheem Performance Platinum 40 gal. Tall 12 Year 40,000 BTU Natural GAS Tank Water Heater

  • 40 Gal / 12 Year 40,000 Btu

Check Latest Price

Sold By Price
Home Depot
DSLSupply.com

Product Details

Specifications

Details
Nominal Tank Capacity (gallons) 40 gal
Gas Type Natural Gas
Water Heater Profile Tall
Vent Type Atmospheric
Application Type Residential

Reviews From Real Customers

rheem.com
James Pegues
Frank Ajlouni

11. Ariston Andris Lux Eco 15L Oversink Electric Water Heater 2.5Kw with A Titanium Enamelled, A Class ERP Rating, Copper HEATING Element, Manufactured T

Ariston Andris Lux Eco 15L Oversink Electric Water Heater 2.5Kw with A Titanium Enamelled, A Class ERP Rating, Copper HEATING Element, Manufactured T

  • 15 L

Check Latest Price

Sold By Price
bigamart.com

Product Details

Specifications

Details
dimensions 34.2 x 36 x 38.5 cm; 8.4 Kilograms

Reviews From Real Customers

Sparky1267
Bruc3
Screwfix.com

12. A.O. Smith Signature 100 40-gallon Short 6-Year Limited Warranty 4500-Watt Double Element Electric Water Heater | E6-40R45DV

A.O. Smith Signature 100 40-gallon Short 6-Year Limited Warranty 4500-Watt Double Element Electric Water Heater | E6-40R45DV

  • 40 Gallon

Check Latest Price

Sold By Price
Lowe’s
The BuildClub

Product Details

Specifications

Details
Nominal Capacity (Gallons) 40.0
Diameter (Inches) 20.5
Height (Inches) 49.75
Rated Storage Capacity (Gallons) 37-Gallon
Smart Compatible No

Reviews From Real Customers

Govner
Jimthehandyman

13. Rheem Performance Platinum 40 gal. Short 12 Year 38,000 BTU Natural GAS Tank Water Heater

Rheem Performance Platinum 40 gal. Short 12 Year 38,000 BTU Natural GAS Tank Water Heater

  • 40 Gal / 12 Year 38,000 Btu

Check Latest Price

Sold By Price
DSLSupply.com

Product Details

Specifications

Details
Nominal Tank Capacity (gallons) 40 gal
Gas Type Natural Gas
Water Heater Profile Short
Vent Type Atmospheric
Application Type Residential

Reviews From Real Customers

marcel7
Sarah Kaiser

14. A. O. Smith 40-gallon Tall Natural GAS Water Heater 18″ D x 61-3/4″ H GCB-40

A. O. Smith 40-gallon Tall Natural GAS Water Heater 18

Check Latest Price

Sold By Price
HD Supply
Ferguson
AF Supply
SupplyHouse.com

Product Details

Specifications

Details
Height (Inches) 61-3/4″
Length (Inches) 18″
Width (Inches) 16″
Diameter 16″
Product Warranty 6 Years Tank / Parts Warranty

15. Bradford White RG240S6N Short 40 Gallon Hot Water Heater

Bradford White RG240S6N Short 40 Gallon Hot Water Heater

  • 40 Gallon

Check Latest Price

Sold By Price
Ferguson
Total Home Supply
SupplyHouse.com
HomePlumbing.com

Product Details

Specifications

Details
Intended Household 2-3 Person
Fuel Type Natural Gas
Capacity (Gallons) 40
Vent Size 3 x 4
Venting Atmospheric

Reviews From Real Customers

Unreal

16. GE GE40T10BAM 40 Gallon Electric Water Heater

GE GE40T10BAM 40 Gallon Electric Water Heater

  • Two 5500 W heating elements quickly increase water temperature for hot water when you need it Heating Elements
  • Ultra-durable stainless-steel heating elements resist rust and corrosion Anode Sensing
  • notifies you when your anode rode needs replacing
  • helps to extend the life of your hot water heater Inlet Tube

Check Latest Price

Sold By Price
Sears
GE Appliances – Official Site
Total Home Supply
Wayfair

Product Details

Specifications

Details
Weight 154 oz

Reviews From Real Customers

Steeler Dave
Gartz
Erinn3473

17. GE GE30T10BAM 30 Gallon Electric Water Heater

GE GE30T10BAM 30 Gallon Electric Water Heater

  • Two 5500 W heating elements quickly increase water temperature for hot water when you need it Heating Elements
  • Ultra-durable stainless-steel heating elements resist rust and corrosion Anode Sensing
  • notifies you when your anode rode needs replacing
  • helps to extend the life of your hot water heater Inlet Tube

Check Latest Price

Sold By Price
GE Appliances – Official Site
Sears
Wayfair
Total Home Supply

Product Details

Specifications

Details
Weight 154 oz

Reviews From Real Customers

PaulEmile

18. A.O. Smith Signature 500 55-Gallon Tall 12-Year Limited Warranty 5500-Watt Double Element Smart Electric Water Heater EE12-55H55DVF.

A.O. Smith Signature 500 55-Gallon Tall 12-Year Limited Warranty 5500-Watt Double Element Smart Electric Water Heater EE12-55H55DVF.

  • 55 Gallon

Check Latest Price

Sold By Price
The BuildClub

Product Details

Specifications

Details
Height (Inches) 60.5
GPH Recovery at 90 Degrees F (Gallons) 25
Diameter (Inches) 24
Foam Insulation Yes
Smart Compatible Yes

Reviews From Real Customers

Engineer10388
jnorman252
Mntman

19. GE GE40T08BAM 40 Gallon Electric Water Heater

GE GE40T08BAM 40 Gallon Electric Water Heater

  • live comfortably with plenty of hot water this quality unit delivers a high volume of fully heated water. Real Capacity.
  • satisfy any hot water need with a real capacity 50- 40.
  • or 30-gallon tank available in tall short and lowboy configurations. Quick water recovery benefits.
  • Anode Rod.
  • its durable design protects the tank from corrosion. Easy set up.

Check Latest Price

Sold By Price
GE Appliances – Official Site
Sears
Wayfair
Total Home Supply

Product Details

Specifications

Details
Weight 154 oz

20. GE GE30S08BAM 30 Gallon Electric Water Heater

GE GE30S08BAM 30 Gallon Electric Water Heater

  • live comfortably with plenty of hot water this quality unit delivers a high volume of fully heated water. Real Capacity.
  • satisfy any hot water need with a real capacity 50- 40.
  • or 30-gallon tank available in tall short and lowboy configurations. Quick water recovery benefits.
  • Anode Rod.
  • its durable design protects the tank from corrosion. Easy set up.

Check Latest Price

Sold By Price
GE Appliances – Official Site
Sears
Total Home Supply
Wayfair

Product Details

Specifications

Details
Weight 130 oz

Conclusion

The conclusion of hot water heater for hard water is that it is an effective way to remove hardness from water. This is because the hot water heater will raise the temperature of the water, which will cause the minerals in the water to dissolve.

This will then allow the water to be filtered more easily, and the hardness will be removed.

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