10 Best Gas Hot Water Heaters of December 2025

• V65iN HE High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
• Up to 6.5 GPM hot water flow rate (varies by groundwater temp)
• Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
• Endless hot water for your entire home
• Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

Rinnai

• 6 gallon water tank
• 12,000 btu rating
• Weight: 32.9 lbs

Suburban Manufacturing

• Heavy gauge Steel tank
• Inner Dura glas lined tank fired at 1,600°f for optimum protection from the effects of corrosion
• Factory installed Brass drain valve on all models allows for easy draining of the unit which reduces sediment deposits extending tank life
• Factory installed Brass temperature/pressure relief valve
• American standard point-of-use electric water heaters are all certified at 300 psi test pressure and 150 psi working pressure. All tanks are also 100% hydrostatically tested at the factory

American Standard Water Heaters

• Savings of up to 50% on water heating costs. Dimensions :17H x 17W x 3.625D inches ;Pipes fittings :3/4 inch NPT
• Digital temperature control in 1-degree increments allows control of hot water; Activation Flow: 0.3 GPM
• Copper and stainless components designed for efficiency, durability and easy replacement.
• Compact size saves valuable storage space, while the stylish and advanced design is pleasing to the eye and Copper and stainless components designed for efficiency, durability and easy replacement.
• Prior to purchase & installation, please verify that this model is the right size for your hot water needs and electrical requirements. Electrical requirements: 27 kW, 240 volts, (3) 40 required breakers, 112.5 maximum power (AMP), (3) 8 required wire.Amperage Draw:113 A
• Required Breaker Quantity: Three 40 Amp Double Pole
• Recommended Electrical Panel: 200 Amps
• NEVER run out of hot water with an ECOSMART tankless water heater.
• Save up to 12 cubic feet of storage space.
• Digital temperature control in 1-degree increments gives users complete control of hot water

Ecosmart

• Blue Diamond glass coating provides superior corrosion resistance to industry-standard glass lining
• Self-powered electronic gas valve uses thermopile to generate power needed to operate the electronic gas control without requiring external power
• Internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response
• Dynaclean diffuser dip tube helps reduce lime and sediment buildup, maximizes hot water output; made from long-lasting PEX cross-linked polymer
• Meets all current regulations set forth by the National Appliance Energy Conservation Act (NAECA)

A. O. Smith

• RU199iN Sensei SE+ Super High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
• Up to 11 GPM hot water flow rate (varies by groundwater temp)
• 15,000 BTU (Minimum) / 199,000 BTU (Maximum)
• Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
• Endless hot water for your entire home
• Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

Rinnai

• Endless hot water for your entire home
• V65eN HE High Efficiency Tankless Hot Water Heater - Natural Gas: Outdoor Installation Only
• Up to 6.5 GPM hot water flow rate (varies by groundwater temp)
• Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
• Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

Rinnai

• Lifetime warranty
• Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
• Never run out of hot water with an ECOSMART tankless water heater
• Patented Self Modulating Technology and design
• ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98

Ecosmart

• Blue Diamond glass coating provides superior corrosion resistance to industry-standard glass lining
• Self-powered electronic gas valve uses thermopile to generate power needed to operate the electronic gas control without requiring external power
• Internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response
• Dynaclean diffuser dip tube helps reduce lime and sediment buildup, maximizes hot water output; made from long-lasting PEX cross-linked polymer
• Meets all current regulations set forth by the National Appliance Energy Conservation Act (NAECA)

A. O. Smith

• CONVENIENT HOT WATER HEATER: 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%. Dimensions : 13.75 W x 13.75 H x 10.75 D Inches
• LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
• INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
• FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
• EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at the sink to provide hot water

Bosch Thermotechnology