5 Best Gas Water Heaters for Residential Use [In 2025]

When it comes to providing reliable and efficient hot water for your home, gas water heaters are a popular choice among homeowners. These water heaters offer several advantages, including lower operating costs, faster heating times, and a continuous supply of hot water. In this comprehensive product review, we’ll explore some of the best gas water heaters for residential use, covering their features, pros, cons, and customer feedback.

5 Best Gas Water Heaters for Residential Use Reviews

Rheem RRTGH84DVLN3701171 Rheem RTGH Series 8.4 GPM 157,000 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel

Overview

The Rheem RRTGH84DVLN3701171 is a high-efficiency indoor condensing natural gas tankless water heater that delivers continuous hot water with minimal wait. It features exclusive Hot Start Programming to eliminate cold water bursts and an Overheat Film Wrap for heat exchanger protection.

Specs

Flow rate of 0.4 – 8.4 GPM
Available temperature settings range from 100 to 140F (default setting of 120F)
Includes electric ignition
Covered under 1 year labor, 15 year heat exchanger, and 5 year parts manufacturer warranties
Width 17-11/16-in

Pros

Provides continuous hot water for the entire home
Efficient and energy-saving design
Compact size and wall-mount installation for space-saving
Includes safety features like overheat protection
Backed by comprehensive manufacturer warranties

Cons

Mixed feedback on heat transfer and warm-up time
Some customers report noisy operation

Customer Review

Customers find the water heater easy to install and appreciate its adjustable temperature up to 140°F, with one customer noting it works well on a half-inch gas line. They praise its quality, value for money, and space-saving design, with one mentioning it saves money on electric bills. The heat transfer receives mixed feedback – while it heats up quickly, some customers report slow warming in the kitchen sink. The noise level is also mixed, with some customers finding it quiet while others describe it as loud.

Rinnai V75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation

Overview

The Rinnai V75IN is a high-efficiency non-condensing tankless water heater designed for energy-conscious homeowners. It offers an endless supply of hot water, a compact and space-saving design, and a powerful 7.5 GPM flow rate.

Specs

Delivers up to 7.5 GPM of hot water
Compact and space-saving design
Backed by a 10-year residential warranty for the heat exchanger, 5-year warranty for labor, and 1-year warranty for parts
Wi-Fi monitoring available with the Controlr module (not included)

Pros

Provides continuous and powerful hot water flow
Energy-efficient design that only heats water when needed
Durable and long-lasting construction with advanced scale detection
Comprehensive manufacturer warranties for peace of mind
Optional Wi-Fi connectivity for remote monitoring and control

Cons

Mixed feedback on water temperature and heating performance
Temperature control system not included with the unit

Customer Review

Customers find the water heater works well and is easy to install, taking about 90 minutes for a plumber to complete the job. The unit provides unlimited hot water for small units and saves money on electric bills. The temperature and heat level receive mixed feedback – while some say the water stays hot and heats up quickly, others report that it goes cold and takes a minute to warm up. The temperature control system also gets mixed reviews, with some praising its accuracy while others note it’s not included with the unit.

GASLAND Gasmart C 2.64 GPM Indoor Natural Gas Tankless Water Heater, 68,000 BTU Residential On Demand Gas Water Heater, 120 Volt Multiple Points of Use, CS264NG

Overview

The GASLAND Gasmart C is a 2.64 GPM indoor natural gas tankless water heater that offers a range of safety features and precise temperature control. It features a compact, wall-mount design and is designed for compatibility with most standard plumbing.

Specs

2.64 GPM natural gas water heater with 68,000 BTUs
1/2″ NPT incoming and outgoing water connections
Includes built-in freeze protection, overheat cutoff fuse, and flame sensor
LED digital display for easy temperature adjustment and monitoring
Precise temperature control within ±1°F

Pros

Compact and space-saving design
Precise temperature control for optimal comfort
Multiple safety features to prevent issues like overheating and freezing
Durable construction with a premium heat exchanger
Wind-resistant design for reliable operation in extreme weather

Cons

No customer reviews available

Customer Review

No customer reviews available for this product.

Tankless Water Heater Propane, 4.21GPM 16L Indoor,Instant Hot Propane Gas Water Heater, with Fahrenheit Digital Display,Multi-Protection (Black)

Overview

This propane-powered tankless water heater from the Tankless Water Heater brand offers a steady temperature control, multiple safety features, and a high flow rate of 4.21 GPM. It’s designed for efficient and energy-saving performance, with a compact and space-saving design.

Specs

4.21 GPM flow rate with a maximum temperature rise of 167°F
68,000 BTU/hour maximum power output
Stainless steel construction with an oxygen-free copper water tank
LED digital display for temperature adjustment between 86°F-167°F
Safety features include flame failure device, anti-freezing protection, and overheat protection

Pros

Steady temperature control and multiple safety features
Efficient and energy-saving performance with advanced combustion technology
Durable stainless steel construction with corrosion-resistant components
Easy installation with standard 1/2″ NPT water and gas connections
Compact and space-saving design compared to traditional tank water heaters

Cons

No customer reviews available

Customer Review

No customer reviews available for this product.

Rheem RTG-84XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 8.4 GPM

Overview

The Rheem RTG-84XLN-3 is a high-efficiency outdoor non-condensing natural gas tankless water heater that delivers continuous hot water with minimal wait. It features Rheem’s exclusive Hot Start Programming and Overheat Film Wrap for enhanced performance and safety.

Specs

Provides enough hot water for the entire house, even with multiple applications
High-efficiency design that only runs when needed, saving energy costs
Water-saving setting can save up to 1,100 gallons of water per year
Hot-start programming keeps the water heater in a ready state, avoiding cold-water bursts
Compact size and reduced weight for easy installation and space savings

Pros

Delivers continuous and reliable hot water for the entire home
Highly efficient design that saves on energy costs and water usage
Includes safety features like hot-start programming and overheat protection
Compact and lightweight for easy installation in tight spaces

Cons

Some customers report longer heat-up times compared to previous models

Customer Review

Customers find the water heater works excellently and consider it an amazing product. The temperature control receives mixed feedback – while many say it heats water fast, one customer notes it takes longer to heat up.

Buying Guide

Rheem RRTGH84DVLN3701171 Rheem RTGH Series 8.4 GPM 157,000 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel

Specs

Flow rate of 0.4 – 8.4 GPM
Available temperature settings range from 100 to 140F (default setting of 120F)
Includes electric ignition
Covered under 1 year labor, 15 year heat exchanger, and 5 year parts manufacturer warranties
Width 17-11/16-in

Pros

Provides continuous hot water for the entire home
Efficient and energy-saving design
Compact size and wall-mount installation for space-saving
Includes safety features like overheat protection
Backed by comprehensive manufacturer warranties

Cons

Mixed feedback on heat transfer and warm-up time
Some customers report noisy operation

Rinnai V75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation

Specs

Delivers up to 7.5 GPM of hot water
Compact and space-saving design
Backed by a 10-year residential warranty for the heat exchanger, 5-year warranty for labor, and 1-year warranty for parts
Wi-Fi monitoring available with the Controlr module (not included)

Pros

Provides continuous and powerful hot water flow
Energy-efficient design that only heats water when needed
Durable and long-lasting construction with advanced scale detection
Comprehensive manufacturer warranties for peace of mind
Optional Wi-Fi connectivity for remote monitoring and control

Cons

Mixed feedback on water temperature and heating performance
Temperature control system not included with the unit

GASLAND Gasmart C 2.64 GPM Indoor Natural Gas Tankless Water Heater, 68,000 BTU Residential On Demand Gas Water Heater, 120 Volt Multiple Points of Use, CS264NG

Specs

2.64 GPM natural gas water heater with 68,000 BTUs
1/2″ NPT incoming and outgoing water connections
Includes built-in freeze protection, overheat cutoff fuse, and flame sensor
LED digital display for easy temperature adjustment and monitoring
Precise temperature control within ±1°F

Pros

Compact and space-saving design
Precise temperature control for optimal comfort
Multiple safety features to prevent issues like overheating and freezing
Durable construction with a premium heat exchanger
Wind-resistant design for reliable operation in extreme weather

Cons

No customer reviews available

Tankless Water Heater Propane, 4.21GPM 16L Indoor,Instant Hot Propane Gas Water Heater, with Fahrenheit Digital Display,Multi-Protection (Black)

Specs

4.21 GPM flow rate with a maximum temperature rise of 167°F
68,000 BTU/hour maximum power output
Stainless steel construction with an oxygen-free copper water tank
LED digital display for temperature adjustment between 86°F-167°F
Safety features include flame failure device, anti-freezing protection, and overheat protection

Pros

Steady temperature control and multiple safety features
Efficient and energy-saving performance with advanced combustion technology
Durable stainless steel construction with corrosion-resistant components
Easy installation with standard 1/2″ NPT water and gas connections
Compact and space-saving design compared to traditional tank water heaters

Cons

No customer reviews available

Rheem RTG-84XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 8.4 GPM

Specs

Provides enough hot water for the entire house, even with multiple applications
High-efficiency design that only runs when needed, saving energy costs
Water-saving setting can save up to 1,100 gallons of water per year
Hot-start programming keeps the water heater in a ready state, avoiding cold-water bursts
Compact size and reduced weight for easy installation and space savings

Pros

Delivers continuous and reliable hot water for