Finding a true 30-gallon gas water heater that is exactly 16 inches in diameter takes more than matching a product title: you need to confirm the tank dimensions, fuel type, venting, and installation requirements. The products below are the closest options in the supplied product data, but none is confirmed to be a 16-inch-diameter, 30-gallon gas storage heater. One is a stand, one is a 30-gallon electric heater, and the others are gas tankless models. Check the measurements and specifications carefully before buying.
Table of Contents
Quick Comparison
| Product | Type | Key specifications | Best fit | Main limitation |
|---|---|---|---|---|
| Camco 11231 Gas Water Heater Stand Kit | Stand for a gas water heater | Fits heaters up to 22 inches in diameter and 50 gallons | Elevating a compatible gas heater | Stand only; it is not a water heater |
| VEVOR 30-Gallon Electric Tank Water Heater | Electric storage tank | 30 gallons; 5,000 watts; 240 volts; 17.72 inches wide | Shoppers open to an electric tank | Not gas-powered; listed width is not 16 inches |
| VEVOR 100,000 BTU Gas Tankless Water Heater | Indoor gas tankless | 100,000 BTU; 16 liters per minute; 120 volts | On-demand hot water in a compact wall-mounted unit | Not a 30-gallon storage tank |
| ThermoMate CZ422NG Natural Gas Tankless Water Heater | Indoor natural gas tankless | Up to 5 GPM; 113,000 BTU | Homes seeking on-demand hot water | Requires compatible venting and gas connections |
| APUS 80,000 BTU Natural Gas Tankless Water Heater | Indoor natural gas tankless | Up to 3.6 GPM; 80,000 BTU | Smaller homes or lighter simultaneous demand | Not a storage tank; licensed installation is required |
Our Picks: Best 16 Inch Diameter 30 Gallon Gas Water Heater reviews
Camco 11231: A Stand for Compatible Gas Water Heaters
The Camco 11231 is a metal stand, not a water heater. It raises a residential gas water heater 18 inches above the floor. Camco lists compatibility with gas heaters up to 22 inches in diameter and 50 gallons, so it may fit around a 30-gallon heater—but it does not include the heater itself.
The stand measures about 21 by 21 inches at the base and 18 inches high. Its 18-gauge galvanized sheet-metal construction is designed to support a compatible unit. Assembly is described as minimal. Before buying, compare the stand’s dimensions with the heater’s base and check the applicable installation rules for your location; required elevation can depend on the installation and local code.
This is the only gas-related product in the group that could be useful alongside a separate storage heater. It does not solve the search for a 16-inch-diameter, 30-gallon gas water heater, and its stated fit range does not confirm that a specific 16-inch model will sit securely on it.
Pros:
- Designed for residential gas water heaters up to 50 gallons
- Fits heaters up to 22 inches in diameter, according to the product information
- Galvanized metal construction
- Minimal assembly is required
Cons:
- Stand only; no water-heating equipment is included
- Its footprint may not suit every installation space
Verdict: Choose this only if you already have a compatible gas storage heater and need a stand; it is not a substitute for the heater you are searching for.
VEVOR 30-Gallon Electric Tank: A Storage Option if Gas Is Not Required
This VEVOR model is the only product in the list with a stated 30-gallon storage capacity, but it runs on electricity rather than gas. It is rated at 5,000 watts and 240 volts, with a listed size of 17.72 inches wide by 40.16 inches high. Those measurements do not match the requested 16-inch diameter, and the product is not a gas heater.
The tank has an enamel interior, a 20 mm foam insulation layer, a temperature knob, and an LED heating indicator. The product information also lists safeguards for dry heating, overheating, and overpressure, along with a floor-mount design. These features may appeal if you want a compact electric storage heater and have the right electrical service and space.
Its strongest advantage over the other choices is the familiar storage-tank format and the stated 30-gallon capacity. Its key trade-off is fundamental: it cannot meet a requirement for gas fuel. Confirm the electrical circuit, clearances, water connections, and installation needs before choosing it.
Pros:
- Stated 30-gallon storage capacity
- 5,000-watt, 240-volt heating system
- Insulated tank and adjustable temperature control
- Listed safety protections include overheat and overpressure safeguards
Cons:
- Electric, not gas-powered
- Listed width is 17.72 inches, not 16 inches
Verdict: Consider this model only if you can use an electric heater and are comfortable with its listed dimensions; it does not fit a gas-heater requirement.
VEVOR 100,000 BTU Tankless: A Compact Gas Alternative to a Storage Tank
This VEVOR unit heats water on demand instead of storing it in a 30-gallon tank. The product listing describes it as a gas tankless heater rated at 100,000 BTU per hour, with a flow rate of 16 liters per minute. It also lists a 120-volt power connection, a wall-mount design, and dimensions of 13.78 inches wide by 21.65 inches high.
A digital display and touch controls show operating information, while the listed safety features include protections for flameout, overheating, dry burning, and freezing. The compact dimensions may help where floor space is limited, but they should not be mistaken for a 16-inch tank diameter: this is a wall-mounted tankless unit with no 30-gallon storage capacity. The listing’s “4.3Gal” wording should also not be read as a 30-gallon tank specification.
It may suit a household willing to switch to an on-demand gas system and able to provide the correct venting, gas supply, and electrical connection. Compared with the two tankless options below, this model has the highest stated BTU rating in the supplied data, but installation compatibility matters more than that number alone.
Pros:
- Gas-fired, on-demand water heating
- Listed at 100,000 BTU per hour and 16 liters per minute
- Compact wall-mounted design
- Temperature display and multiple listed safety protections
Cons:
- Not a 30-gallon storage heater
- Requires suitable gas, venting, and electrical connections
Verdict: This is a possible compact gas alternative if you want tankless operation, but skip it if you specifically need a 30-gallon storage tank.
ThermoMate CZ422NG: Natural Gas Tankless with Up to 5 GPM
The ThermoMate CZ422NG is an indoor natural gas tankless heater, rated for up to 5 gallons per minute and 113,000 BTU. It is designed to heat water as it flows through the unit rather than hold a reserve in a storage tank. The manufacturer states that it can support two showers at once under its stated test conditions, but actual output depends on incoming water temperature and household demand.
The unit has a 3.5-inch LED display, temperature settings from 90 to 140°F, and listed safety protections for conditions such as flameout, overheating, freezing, and excessive air pressure. The product information gives a compact wall-mounted size of about 21 inches high, 13 inches wide, and 7 inches deep. It also lists standard water and gas connections, a 3-inch vent connection, and a 120-volt plug.
Some owners describe consistent hot-water performance, while installation experiences can depend on whether the existing vent and connections are compatible. That is a useful reminder to check the vent type and local requirements before purchase. This may be a better fit than a small storage tank for buyers who want on-demand operation, but it is not a direct replacement for a 30-gallon tank without considering the home’s hot-water needs.
Pros:
- Natural gas operation with a stated maximum output of 5 GPM
- Temperature display and adjustable set point
- Compact wall-mounted format
- Multiple listed safety features, including freeze protection
Cons:
- Not a 30-gallon storage heater
- Venting and gas connections must match the installation requirements
Verdict: Choose this only if you want an indoor natural gas tankless system and can confirm that its venting and capacity suit your home.
APUS 80,000 BTU Tankless: A Lower-Output Natural Gas Option
The APUS is a wall-mounted natural gas tankless heater rated at 80,000 BTU and up to 3.6 GPM. The supplied product information positions it for a smaller home or lighter demand across a few water outlets. Like the other tankless models here, it does not store hot water in a 30-gallon tank and does not meet the requested storage-heater format.
Its listed dimensions are about 20.55 inches high by 13.27 inches wide by 5.91 inches deep. Features include an LED display, a stated temperature range of 95 to 149°F, freeze protection, and safeguards for overheating and flame failure. The listing calls for licensed installation for gas, venting, and combustion setup, so this is not a simple swap-in choice unless the home already has compatible connections.
Some owners report straightforward startup when existing venting was already in place, and the compact body may appeal in a tight utility area. The trade-off is its lower stated flow rate compared with the ThermoMate. Whether that is enough depends on incoming water temperature and how many fixtures you expect to run at once.
Pros:
- Natural gas operation with a stated maximum flow of 3.6 GPM
- Compact wall-mounted design
- LED display and adjustable temperature setting
- Listed freeze and operating-condition protections
Cons:
- Not a 30-gallon storage heater
- Lower stated flow rate than the ThermoMate option
Verdict: Consider the APUS for a smaller household seeking a natural gas tankless unit, but confirm its flow capacity and installation needs before choosing it.
How to Choose a 16-Inch-Diameter, 30-Gallon Gas Water Heater
Confirm the heater type and fuel first
A 30-gallon storage heater holds hot water in a tank, while a tankless heater warms water as it flows. They are different systems and are not always direct replacements for one another. Confirm that the product is a natural gas or propane model as needed for your home, and make sure the listing identifies it as a storage tank if that is what you want. The products in this comparison do not include a confirmed 16-inch-diameter, 30-gallon gas storage heater.
Check actual dimensions, including connections
Do not rely on a rounded size or a phrase such as “compact.” Verify the tank’s width or diameter, height, and required clearance. Also account for the space needed for gas piping, water connections, venting, and service access. A listing’s width may not be the same as its tank diameter, and nearby walls or equipment can limit usable space.
Match capacity to household use
A 30-gallon tank can be a practical choice where space is limited, but the right capacity depends on how many people use hot water and when they use it. For tankless heaters, compare the stated flow rate with the number of fixtures likely to run at the same time. Incoming water temperature affects how much hot water a tankless system can deliver, so a headline flow rate may not reflect every home’s conditions.
Verify fuel supply and venting
Gas appliances need a compatible fuel supply and an approved way to vent combustion exhaust. Check whether the unit is designed for natural gas or propane, and confirm the required gas connection and vent type. Do not assume an existing vent will work with a new heater. A licensed plumbing or HVAC professional can assess the setup and local requirements.
Review installation rules and safety features
Installation requirements can vary by location and by appliance. Confirm local code, clearances, elevation rules, and any required safety equipment before ordering. Features such as temperature controls, pressure relief, freeze protection, and overheat safeguards are useful, but they do not replace correct installation and maintenance.
Compare operating needs, not just purchase features
Storage and tankless heaters have different operating patterns. A storage tank keeps a volume of water hot, while a tankless model responds to hot-water demand and depends on its rated capacity and installation. Compare the energy source already available in your home, the expected household demand, and the cost and complexity of installation before deciding between them.
Frequently Asked Questions
Is any product in this list a 16-inch-diameter, 30-gallon gas water heater?
No. The VEVOR model is a 30-gallon electric tank. The Camco product is a stand. The remaining three are gas tankless heaters, not 30-gallon storage tanks. None is confirmed in the supplied specifications as a 16-inch-diameter, 30-gallon gas heater.
Does the Camco stand include a water heater?
No. It is a stand for a separate gas water heater. The product information says it fits heaters up to 22 inches in diameter and 50 gallons, but you should verify the base dimensions and installation rules for your specific heater.
Can the VEVOR 30-gallon electric heater replace a gas heater?
Only if an electric heater is acceptable for your home and the electrical service and installation are suitable. It is rated at 240 volts and 5,000 watts, and it does not run on gas.
Is a tankless heater the same as a 30-gallon tank?
No. A tankless heater heats water as it flows through the unit and does not store a 30-gallon reserve. Its usefulness depends on flow capacity, incoming water temperature, and simultaneous household demand.
How do I know whether a tankless heater can serve two showers?
Compare the model’s flow rate with the combined flow of the fixtures you expect to use. Also account for the temperature rise required by your incoming water. The ThermoMate listing describes two-shower use under stated conditions, but actual performance can vary with the home’s setup.
Can I install a gas water heater myself?
Gas, combustion, and venting work can create safety risks if handled incorrectly. Follow the product’s installation instructions and local code, and use a licensed professional where required. The APUS product information specifically calls for licensed installation for gas, vent, and combustion setup.
Conclusion
None of the supplied products is a confirmed match for a 16-inch-diameter, 30-gallon gas storage water heater. The Camco is an accessory stand, the VEVOR 30-gallon model is electric, and the other three options are tankless. If your specifications are firm, keep searching for a gas storage model whose manufacturer lists both the exact tank dimensions and capacity. If you are open to a different setup, compare the VEVOR for electric storage or the gas tankless models for on-demand heating, and confirm fit, fuel, venting, and installation requirements before ordering.
