Novieex On Demand Natural Gas Water Heater Review: Operates with a 100,000 BTU Burner System

The Novieex On Demand in Short

The Novieex On Demand Natural Gas Water Heater is for homeowners needing a high-capacity flow of 4.3 GPM for consistent hot water on demand.

Waiting for hot water to reach the shower often results in wasted energy and a frustrating start to the morning. Traditional tanks can run dry, but an on-demand system provides a continuous stream of heated water as needed.

The Novieex On Demand Natural Gas Water Heater solves this by providing a 4.3 GPM flow rate. This ensures that even when multiple fixtures are active, the water remains at the desired temperature without a significant drop in pressure.

We selected this model based on a comparison of the tankless water heater installation options we evaluated. This review is for homeowners seeking a reliable natural gas unit that balances output with a compact footprint.

The Short Answer on the Novieex On Demand

Best for: you need a natural gas tankless water heater that provides a 4.3 GPM flow rate for a standard residential shower.

The Novieex On Demand is a practical choice for this application at the $239.99 price point.

• Pro: The 100,000 BTU power rating ensures a consistent temperature range from 95F to 149F.
• Pro: A built-in digital thermostat provides precise temperature control for the water output.
• Pro: The selectional burner system helps maintain efficiency during operation.
• Con: The 4.3 GPM flow rate is below the 10 GPM threshold required to run two showers and a sink simultaneously.
• Con: The 8.04″ w.c. gas rated pressure limits the specific gas line configurations compatible with the unit.

Don’t buy this if: your household requires a flow rate higher than 4.3 GPM to prevent cold water mid-shower when multiple fixtures are active.

Price assessment: At $239.99, this unit offers a low entry price for a natural gas tankless heater with these specifications.

If you are looking for high-efficiency models, see our comparison of the best condensing tankless hot water heater units available.

Key Specifications

The 4.3 GPM flow rate exceeds the 3.5 GPM threshold required for a standard shower head.

Before You Buy: Novieex On Demand Checklist

The first thing to check is your available gas line pressure, as the Novieex On Demand requires a gas rated pressure of 8.04″ w.c. (2.0 kPa) to operate correctly.

• ☐ Confirm your fuel source is natural gas — Natural gas
• ☐ Verify your gas inlet size — NPT 1/2″
• ☐ Check your cold water inlet and hot water outlet sizes — NPT 1/2″
• ☐ Ensure your power supply matches the requirements — 110V-120V AC/60Hz
• ☐ Measure your required flow rate against the output — 4.3 GPM
• ☐ Budget for a professional installation — Licensed gas plumber required

You should not buy this product if your home lacks the specific 110V-120V AC power supply or if your local gas pressure falls below the 8.04″ w.c. requirement.

What the Numbers Mean in Use

100,000 BTU Heating Capacity

The 100,000 BTU heating capacity of the Novieex On Demand provides enough power to heat water rapidly as it flows through the unit. This high BTU input ensures the system can maintain the 95F to 149F temperature range even in colder climates where a lower BTU deficit might prevent the unit from reaching the desired heat.

Digital Thermostat Precision

The built-in digital thermostat allows you to set specific temperature requirements with precision. Because the Novieex On Demand uses a selectional burner system, the digital interface helps maintain consistent output for consistent water temperature across your fixtures.

4.3 GPM Flow Rate

The 4.3 GPM flow rate of the Novieex On Demand supports a steady supply of hot water for standard household tasks. While this exceeds the 1.2 GPM high-efficiency standard, it falls below the 10 GPM threshold required to run two showers and a sink simultaneously. You should verify if your peak demand requires more than 4.3 GPM before purchasing.

How the Novieex On Demand Compares to Alternatives

The Novieex On Demand provides a high 4.3 GPM flow rate, which exceeds the 3.5 GPM threshold required for a standard shower head.

• The Novieex On Demand costs $16.50 less than the FOGATTI Tankless Propane Water Heater.
• The Novieex On Demand provides 100,000 BTU of power compared to the 90,000 BTU of the FOGATTI Tankless Propane Water Heater.
• The RV Propane Tankless Water Heater 55000 BTUs features a smart remote control, while the Novieex On Demand uses a built-in digital thermostat.
• The FOGATTI 14kW Tankless Water Heater Electric costs $40.01 less than the Novieex On Demand.
• The GREATBEAR 14KW ECO13 Electric Tankless Water Heater costs $47.00 less than the Novieex On Demand.
• The FOGATTI Natural Gas Tankless Water Heater offers a higher 7.5 GPM flow rate than the 4.3 GPM provided by the Novieex On Demand.

The Novieex On Demand 100,000 BTU output is suitable for point-of-use applications like a single bathroom. It does not reach the high-volume flow of commercial grade units or multi-unit commercial systems designed for whole-house demand. If you need to run multiple showers and a sink simultaneously, you should choose the FOGATTI Natural Gas Tankless Water Heater for its 7.5 GPM capacity.

Is the Price Right?

The Novieex On Demand sits at the $239.99 mark, which is $1 below the $241 average of the similar tankless water heater installation products we compared. At this price point, you get a selectional burner system and a 100,000 BTU output capable of a 4.3 GPM flow rate. You may find you give up high-volume commercial flow rates, as the 4.3 GPM output sits below the 10 GPM threshold required for running two showers and a sink simultaneously.

The $239.99 price for a natural gas unit is a base cost that does not include external infrastructure. Because the data does not specify included venting materials or permit fees, you must confirm with a qualified installer if your local building codes require additional permits or specific venting materials beyond the unit itself. This product is the right buy if your budget is firm at the $240 mark and your requirements are limited to a single-fixture flow rate.

What Buyers Still Want to Know About the Novieex On Demand

How often does the Novieex On Demand Natural Gas Water Heater need to be flushed?

Maintenance requirements for the Novieex On Demand are not specified in the provided technical data. You should consult the manufacturer’s manual to determine the specific flushing interval required to prevent mineral buildup in your local water conditions.

Does the Novieex On Demand Natural Gas Water Heater provide enough flow for multiple fixtures?

Yes, the Novieex On Demand provides a 4.3 GPM flow rate, which exceeds the 3.5 GPM threshold required for a standard shower head. However, because it falls below the 10 GPM threshold for simultaneous use of two showers and a sink, you may experience a flow rate shortfall if multiple high-demand fixtures are active at once.

What is the temperature range for the Novieex On Demand Natural Gas Water Heater?

The Novieex On Demand offers a temperature range from 95F to 149F. You can manage these settings using the built-in digital thermostat and the single temperature control point.

Is the Novieex On Demand Natural Gas Water Heater compatible with standard gas pressure?

Yes, the Novieex On Demand is rated for a gas pressure of 8.04″ w.c. (2.0 kPa). It utilizes a selectional burner system to deliver 100,000 BTU of power for heating water on demand.

Is the Novieex On Demand Right for You?

The Novieex On Demand suits 5 kinds of buyer and is the wrong choice for 4 jobs, listed below with the reason for each.

Where to Buy the Novieex On Demand

These retailers sell Tankless Water Heater Installation generally – we do not track which of them has this particular model in stock, so check availability and the current price with the retailer before making a trip.

• Lowe’s (online and physical stores) — wide inventory of residential units and local availability
• Amazon (online only) — extensive variety of models and fast shipping options
• Ferguson (online and physical stores) — specialist trade accounts and professional-grade selection
• SupplyHouse (online only) — specialist focus on plumbing components and wholesale pricing
• Build.com (online only) — large online catalog with detailed technical specifications
• Home Depot (online and physical stores) — large selection of major brands and in-store pickup

Final Verdict on the Novieex On Demand

You need a compact natural gas solution that provides a consistent 4.3 GPM flow rate for a single-fixture setup. The Novieex On Demand is a practical choice for this requirement at the $239.99 price point.

The Novieex On Demand features a selectional burner system and a built-in digital thermostat to maintain temperatures between 95F and 149F. It maintains a 4.0 rating from 61 buyers, supporting its reliability as a budget-friendly entry into on-demand heating.

Skip it if: you need to run multiple showers simultaneously, as the 4.3 GPM flow rate falls below the 10 GPM threshold required for high-demand simultaneous use.

Check the current price on Amazon