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  1. Home
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  5. Water Heaters
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  7. Gas Tankless Water Heaters

Gas Tankless Water Heaters (136 items) - Page 4

Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS420DVLP
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G116389164
Mfr # RTRS-FS420DVLP
product price:  $8,099.99
/ea
Eccotemp SMARTHOME Indoor 6.8 GPM Liquid Propane Tankless Water Heater SH22-ILP
Eccotemp

SMARTHOME Indoor 6.8 GPM Liquid Propane Tankless Water Heater

Zoro # G110919725
Mfr # SH22-ILP
product price:  $854.99
/ea
Eccotemp SMARTHOME Outdoor 6.8 GPM Liquid Propane Tankless Water Heater SH22-LP
Eccotemp

SMARTHOME Outdoor 6.8 GPM Liquid Propane Tankless Water Heater

Zoro # G510919721
Mfr # SH22-LP
product price:  $854.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS421XLN
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G016389189
Mfr # RTRS-FS421XLN
product price:  $11,579.99
/ea
Rheem Gas Tankless Water Heater, 56.7 in H RTRS-WH220DVLP
Rheem

Gas Tankless Water Heater, 56.7 in H

Zoro # G816389150
Mfr # RTRS-WH220DVLP
product price:  $6,909.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS632DVLN
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G216389224
Mfr # RTRS-FS632DVLN
product price:  $18,989.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS420XLP
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G016389158
Mfr # RTRS-FS420XLP
product price:  $8,099.99
/ea
Eccotemp Luxe 1.5 GPM 37.5K BTU Outdoor Portable Tankless Water Heater with LED Display EL5
Eccotemp

Luxe 1.5 GPM 37.5K BTU Outdoor Portable Tankless Water Heater with LED Display

Zoro # G002751631
Mfr # EL5
product price:  $231.99
/ea
No Product Image Available
Rheem

Gas Tankless Water Heater

Zoro # G816389181
Mfr # AP24551
product price:  $864.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-WH330XLP
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G516389184
Mfr # RTRS-WH330XLP
product price:  $9,559.99
/ea
No Product Image Available
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G816557795
Mfr # RTRS-FS632DVLP
product price:  $22,387.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS422XLP
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G016389141
Mfr # RTRS-FS422XLP
product price:  $15,169.99
/ea
Eccotemp Builder Grade  7.0 GPM Outdoor Liquid Propane Tankless Water Heater 7GB-LP
Eccotemp

Builder Grade 7.0 GPM Outdoor Liquid Propane Tankless Water Heater

Zoro # G806372490
Mfr # 7GB-LP
product price:  $771.99
/ea
Eccotemp 6.8 GPM Outdoor Liquid Propane Tankless Water Heater 6.8GB-LP
Eccotemp

6.8 GPM Outdoor Liquid Propane Tankless Water Heater

Zoro # G515553852
Mfr # 6.8GB-LP
product price:  $679.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS422DVLP
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G516389207
Mfr # RTRS-FS422DVLP
product price:  $15,169.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS421DVLP
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G216389187
Mfr # RTRS-FS421DVLP
product price:  $11,579.99
/ea
Eccotemp 6.8 GPM Indoor Natural Gas Tankless Water Heater 6.8GB-ING
Eccotemp

6.8 GPM Indoor Natural Gas Tankless Water Heater

Zoro # G415553853
Mfr # 6.8GB-ING
product price:  $709.99
/ea
Reliance Condensing Indoor 120000 BTU Ultra-Low NOx Tankless Liquid Propane, LP Gas Water Heater TS-140-LIH
Reliance

Condensing Indoor 120000 BTU Ultra-Low NOx Tankless Liquid Propane, LP Gas Water Heater

Zoro # G021873543
Mfr # TS-140-LIH
product price:  $1,809.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS630DVLP
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G816389143
Mfr # RTRS-FS630DVLP
product price:  $12,449.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS632XLP
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G816389228
Mfr # RTRS-FS632XLP
product price:  $18,989.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS630XLN
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G316389186
Mfr # RTRS-FS630XLN
product price:  $12,449.99
/ea
Eccotemp SMARTHOME Outdoor 6.8 GPM Natural Gas Tankless Water Heater SH22-NG
Eccotemp

SMARTHOME Outdoor 6.8 GPM Natural Gas Tankless Water Heater

Zoro # G210919731
Mfr # SH22-NG
product price:  $854.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS421XLP
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G716389199
Mfr # RTRS-FS421XLP
product price:  $11,579.99
/ea
Reliance Condensing Indoor 120000 BTU Ultra-Low NOx Tankless Natural Gas Water Heater TS-140-GIH
Reliance

Condensing Indoor 120000 BTU Ultra-Low NOx Tankless Natural Gas Water Heater

Zoro # G021869959
Mfr # TS-140-GIH
product price:  $1,899.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS633XLP
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G016389172
Mfr # RTRS-FS633XLP
product price:  $22,809.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS420DVLN
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G816389242
Mfr # RTRS-FS420DVLN
product price:  $8,099.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS411XLN
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G516389276
Mfr # RTRS-FS411XLN
product price:  $8,099.99
/ea
Rheem Gas Tankless Water Heater, 54.3 in H RTRS-FS421DVLN
Rheem

Gas Tankless Water Heater, 54.3 in H

Zoro # G616389176
Mfr # RTRS-FS421DVLN
product price:  $11,579.99
/ea
Gas Tankless Water Heaters (136 items) - Page 4
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About Gas Tankless Water Heaters

Gas Tankless Water Heaters are an efficient and convenient way to provide hot water on demand. Rather than storing hot water in a tank, these units use natural gas or liquid propane to heat water as it passes through the unit. This means you can have endless hot water without worrying about running out or wasting energy. Gas Tankless Water Heaters are popular in both residential and commercial settings due to their energy efficiency, space-saving design, and long lifespan.

Types of Gas Tankless Water Heaters

Gas Tankless Water Heaters come in both indoor and outdoor models, and can be powered by either natural gas or liquid propane. The type of gas used can impact the unit's efficiency and cost, so it's important to choose the right type for your needs. Residential units typically run on 120V or 240V electricity, while commercial units may require higher voltage. Outdoor units are typically more expensive but do not require venting, while indoor units require proper ventilation to prevent carbon monoxide buildup.

How Gas Tankless Water Heaters are Made

Gas Tankless Water Heaters are typically made with a heat exchanger, which heats the water as it passes through. The heat exchanger is made of materials such as copper, stainless steel, or aluminum, which are chosen for their ability to transfer heat efficiently. The units also include a burner, which is fueled by natural gas or liquid propane, and a computer control module, which regulates the unit's temperature and flow rate. Some units may also include additional features such as a recirculation pump or condensing technology to further increase efficiency.

Industries that use Gas Tankless Water Heaters

Gas Tankless Water Heaters are commonly used in industries such as hospitality, food service, and healthcare, where hot water is needed on demand for tasks such as cooking, cleaning, and bathing. In residential settings, they are popular in homes with multiple bathrooms or large families who need a steady supply of hot water. They are also used in commercial settings such as laundromats, car washes, and factories, where hot water is needed for a variety of applications. Gas Tankless Water Heaters are often installed by licensed professionals who can ensure proper ventilation, gas line connections, and electrical wiring.

Find the Gas Tankless Water Heaters You Need at Zoro

Looking for a specific item? Use our robust search tool to find it by name or keyword, or use our handy filters to narrow down our full assortment. You can also check out our whole selection of plumbing tools & supplies, along with other equipment and essentials to ensure you have all you need to tackle the job, especially if you're taking on a DIY project for the first time.
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