Top 10 Inline Heaters
for December 2021

Recommendations are independently chosen by MOOZ’s editors. Purchases you make through our links may earn us a commission.

1
9.8
SCORE
WOODBRIDGE Whirlpool and 18 Air Jet Series Inline Heater with Right Side Drain Walk-in-Bathtub, ADA Complaint, 60

WOODBRIDGE Whirlpool and 18 Air Jet Series Inline Heater with Right Side Drain Walk-in-Bathtub

ADA Complaint, 60" L x 30" W x 38" H, WB603038R, white

by woodbridge
What We like

The Package Height of the product is 55 inches

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Product Features

  • The Package Length of the product is 72 inches
  • The Package Width of the product is 38 inches
  • Woodbridge Whirlpool and 18 Air Jet Series Inline Heater with Right Side Drain Walk-In-Bathtub, ADA Complaint, 60" L x 30" W x 38" H, WB603038R

The package length of the product is 72 inches The package width of the product is 38 inches woodbridge whirlpool and 18 air jet series inline heater with right side drain walk-in-bathtub, ada complaint, 60" l x 30" w x 38" h, wb603038r

2
9.8
SCORE
Ecosmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology,White & 3M Aqua-Pure Whole House Scale Inhibition Inline Water System

Ecosmart ECO 18 Electric Tankless Water Heater

18 KW at 240 Volts with Patented Self Modulating Technology, White & 3M Aqua-Pure Whole House Scale Inhibition Inline Water System

What We like

Product 2: HIGH FLOW RATES: 3/4 Inch NPT inlet/outlet connections for easy installation and high flow rates (rated for up to 10 GPM); System to be installed on cold water line feeding the water heater

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Product Features

  • Product 1: Manufactured in China
  • Product 1: The product is easy to use
  • Product 1: Copper and stainless components
  • Product 2: HELPS PROTECT HOT WATER HEATERS: Polyphosphates, included in this product, help to inhibit scale build up in hot water heaters (both standard (gas or electric) and tank less styles) and boilers; Helps extend the life of hot water heaters and hot water using appliances, pipes, and downstream plumbing fixtures such as faucets and shower heads
  • Product 2: MAINTAINS EFFICIENCY: By inhibiting scale build up on heat elements, helps maintain water heater efficiency

Product 2: helps protect hot water heaters: polyphosphates, included in this product, help to inhibit scale build up in hot water heaters (both standard (gas or electric) and tank less styles) and boilers; helps extend the life of hot water heaters and hot water using appliances, pipes, and downstream plumbing fixtures such as faucets and shower heads Product 1: the product is highly durable Product 1: copper and stainless components Product 1: manufactured in china Product 2: maintains efficiency: by inhibiting scale build up on heat elements, helps maintain water heater efficiency Product 1: the product is easy to use

3
9.4
SCORE
SpaGuts 25-150-0013 Inline Bath Heater Kit, 650W, 110V

SpaGuts 25-150-0013 Inline Bath Heater Kit

650W, 110V

by SpaGuts
What We like

Pair of 1.5" Heater O-Ring Gaskets included; 110V 60Hz 3ft NEMA cord with Piggy Back Style Plug

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Product Features

  • Built-in Pressure Switch to activate heating; Automatic smart thermostat (104 degrees F limit)
  • Reversible mounting; Heater on light; Hi-limit protection; 1.5", 1.0" and 3/4" pipe fittings included
  • Stainless Steel 7.0" x 1.5" in-line heater; 650W 110V Incoloy heater element

Built-in pressure switch to activate heating; automatic smart thermostat (104 degrees f limit) Reversible mounting; heater on light; hi-limit protection; 1.5", 1.0" and 3/4" pipe fittings included Stainless steel 7.0" x 1.5" in-line heater; 650w 110v incoloy heater element

4
9
SCORE
American Standard 9ILH Inline Whirlpool Heater, White

American Standard 9ILH Inline Whirlpool Heater

White

by American Standard
What We like

Commercial Brand: American Standard

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Product Features

  • Country of Manufactury: United States
  • Plumbing
  • Tubs and Showers

Plumbing Country of manufactury: united states Tubs and showers

5
8.6
SCORE
American Standard 9075120 Safe-T Heater, 7.50 x 4.81 x 3.56 Inches, Black

American Standard 9075120 Safe-T Heater

7.50 x 4.81 x 3.56 Inches, Black

by American Standard
What We like

Quick and easy two-step installation

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Product Features

  • Compatible only with American Standard Whirlpool tubs
  • Whirlpool accessory
  • Maintain constant water temperature
  • Fill the tub with water at your preferred temperature, and this E-Z Install in-line heater will maintain it for you.
  • Allows for longer, more relaxing soak

Whirlpool accessory Maintain constant water temperature Allows for longer, more relaxing soak Fill the tub with water at your preferred temperature, and this e-z install in-line heater will maintain it for you. Compatible only with American Standard whirlpool tubs

6
8.5
SCORE
110V-120V Electric Mini-Tank Hot Water Heater Storage,1.5KW Kitchen Household Compact Size Point-of-Use, Hot Water Output of 2.5 Gallon, 2 PCs 16” Long 1/2”FIP Stainless Steel Water Hoses

BISELONG 110V-120V Electric Mini-Tank Hot Water Heater Storage

1.5KW Kitchen Household Compact Size Point-of-Use, Hot Water Output of 2.5 Gallon, 2 PCs 16” Long 1/2”FIP Stainless Steel Water Hoses

by BISELONG
What We like

SAFE DURABLE & LONGEVITYMade of stainless steel and never rustAnti-leakage plugMultiple safety protection functions protect you from the risk of scald, leakage or other injury.Premium plastic shell is corrosion resistantThis mini hot water heater is ideal for kitchen, bar, school, hospital, community and RV.

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Product Features

  • FAST RECOVERY RATEEliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time8-15 minutes to heat to your desired temperature).
  • SMART INVERTER FOR ENERGY SAVINGAutomatic heat preservation and storage of hot water, 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%Maximum temperature167The built-in smart chip heats up to the temperature you set, and automatically Insulation when heated to the specified temperature.
  • EASY TO USEstorage tank electric water heater with easy-to-operate knob temperature adjustment designEasy to control warmth.Vent valve, Tee pipeline pipes and other accessories are complete for quick installation without additional expenses or preparing time of accessories.

Easy to usestorage tank electric water heater with easy-to-operate knob temperature adjustment designeasy to control warmth.vent valve, tee pipeline pipes and other accessories are complete for quick installation without additional expenses or preparing time of accessories. Smart inverter for energy savingautomatic heat preservation and storage of hot water, 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. thermal efficiency is 98%maximum temperature167the built-in smart chip heats up to the temperature you set, and automatically insulation when heated to the specified temperature. Fast recovery rateeliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time8-15 minutes to heat to your desired temperature).

7
8.5
SCORE
3M Aqua-Pure Whole House Scale Inhibition Inline Water System AP430SS, Helps Prevent Scale Build Up On Hot Water Heaters and Boilers

3M Aqua-Pure Whole House Scale Inhibition Inline Water System AP430SS

Helps Prevent Scale Build Up On Hot Water Heaters and Boilers

by 3M
What We like

IDEAL FOR any size home

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Product Features

  • CORROSION RESISTANCE: 304 stainless steel head can be installed on existing copper pipes in the home; It consists of a corrosion resistant material that provides long service life
  • NSF STANDARD 42 CERTIFIED: Tested by NSF International to NSF/ANSI Std; 42 for material and structural requirements only
  • HIGH FLOW RATES: 3/4 Inch NPT inlet/outlet connections for easy installation and high flow rates (rated for up to 10 GPM); System to be installed on cold water line feeding the water heater
  • HELPS PROTECT HOT WATER HEATERS: Polyphosphates, included in this product, help to inhibit scale build up in hot water heaters (both standard (gas or electric) and tank less styles) and boilers; Helps extend the life of hot water heaters and hot water using appliances, pipes, and downstream plumbing fixtures such as faucets and shower heads
  • MAINTAINS EFFICIENCY: By inhibiting scale build up on heating elements, helps maintain water heater efficiency

Maintains efficiency: by inhibiting scale build up on heating elements, helps maintain water heater efficiency Product specifications: system has a pressure range of 25 to 125 psi (862 kpa) and operating temperature of 40 to 100f (4.4 to 37.8c) Helps protect hot water heaters: polyphosphates, included in this product, help to inhibit scale build up in hot water heaters (both standard (gas or electric) and tank less styles) and boilers; helps extend the life of hot water heaters and hot water using appliances, pipes, and downstream plumbing fixtures such as faucets and shower heads High flow rates: 3/4 inch npt inlet/outlet connections for easy installation and high flow rates (rated for up to 10 gpm); system to be installed on cold water line feeding the water heater Nsf standard 42 certified: tested by nsf international to nsf/ansi std; 42 for material and structural requirements only Corrosion resistance: 304 stainless steel head can be installed on existing copper pipes in the home; it consists of a corrosion resistant material that provides long service life

8
8.4
SCORE
Hydro Quip Compact Series Whirlpool Bath Heater in-Line 120 Volts 1.0 Kilowatts 3 Feet Cord/Plug Ct101-A Ph101-10Up

HydroQuip Hydro Quip Compact Series Whirlpool Bath Heater in-Line 120 Volts 1.0 Kilowatts 3 Feet Cord/Plug Ct101-A Ph101-10Up

by HydroQuip
What We like

Automatic smart thermostat

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Product Features

  • 120V; 1.0 kW
  • 3'. corded plug connection
  • Heater on light
  • Dimensions with power box: 4".H, Width of power box: 1.67"., Length of power box: 4.5".

Dimensions with power box: 4".h, width of power box: 1.67"., length of power box: 4.5". 120v; 1.0 kw Heater on light 3'. corded plug connection

9
8.4
SCORE
SpaGuts 25-150-0003 T-Style Bath Heater Kit, 1.5KW, 110V

SpaGuts 25-150-0003 T-Style Bath Heater Kit

1.5KW, 110V

by SpaGuts
What We like

Includes 1.5", 1.0" and 3/4" fittings; 110V 3ft NEMA cord; Complete Installation Instructions

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Product Features

  • Reversible mounting; Heater on light; Hi-limit protection
  • Built-in pressure switch to activate heating; Automatic smart thermostat (104 degrees F limit)
  • Stainless steel 7.0" x 1.5" T-style heater; 1.5kw Incoloy heater element

Built-in pressure switch to activate heating; automatic smart thermostat (104 degrees f limit) Stainless steel 7.0" x 1.5" t-style heater; 1.5kw incoloy heater element Reversible mounting; heater on light; hi-limit protection

10
8.4
SCORE
TPI KT121 Industrial Series Thermostat, SPST Heat Only, 6' Cord/Plug

TPI KT121 Industrial Series Thermostat

SPST Heat Only, 6' Cord/Plug

by TPI Corporation
What We like

Series: KT

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Product Features

  • Voltage Rating: 125 VAC
  • Temperature Rating: -10 - 100 DEG F
  • Rugged Steel Case

Rugged steel case Temperature rating: -10 - 100 deg f Voltage rating: 125 vac

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