A. O. SMITH C4MA-320E Gpm Natural Gas Tankless Water Heater 199000 2.8

( Brand: A. O. Smith ), ( Manufacturer Part Number: C4MA-320E ), ( Power Source: Gas ), ( Lp: Liquefied Petroleum Gas ), ( Ng: Natural Gas, Propane Gas, Propane Liquid ), ( Color: Gray ), ( Water Connection: 3/4 In Npt ), ( Type: Tankless Water Heater/boiler ), ( Unit Type: Unit ), ( Water Connection Location: Top ), ( Heating System: Instantaneous ), ( Voltage: 110/120 V ), ( Amperage: 133 Amps ), ( Btu/h Heating Rating: 199000 ), ( Jacket Diameter: Heater ), ( Features: Compact, Indoor ), ( Minimum Flow Activation: 2.8 Gpm ), ( Water Temperature Range: 100 F To 140 F ), ( Mounting Location: Outdoor, Wall, Whole House, Indoor ), ( Water Heater Profile: Compact ), ( Power: 32kw )

Review A. O. SMITH Commercial 1990 Btu 2.8 Gpm Indoor Natural Gas Tankless Water Heater

Introducing the Smith C4MA-320E Natural Gas Tankless Water Heater, a high-performance and energy-efficient solution for your home's hot water needs. This advanced water heater is capable of delivering a consistent 2.8 gallons per minute (GPM) flow rate, ensuring an ample supply of hot water for multiple applications simultaneously.

The Smith C4MA-320E is designed with a condensing technology, which extracts more heat from the natural gas fuel source, making it an excellent choice for those seeking to reduce their energy consumption and lower their utility bills. With an efficiency rating of up to 0.97 Uniform Energy Factor (UEF), this tankless water heater outperforms many conventional storage tank models.

Weighing in at 60.5 pounds and measuring 20.3 inches by 13.4 inches by 6.8 inches, this compact and versatile unit can be installed on an interior or exterior wall, making it suitable for various installation scenarios. The unit is equipped with a front-mounted digital control panel, which allows for easy temperature adjustment and monitoring. It also features a built-in recirculation system, enabling you to save water by delivering hot water to your fixtures faster.

The Smith C4MA-320E is constructed with high-quality materials, including a stainless steel heat exchanger, which provides exceptional durability and resistance to corrosion. It is also equipped with advanced safety features, such as an automatic low water cutoff, a high temperature limit switch, and a thermal overload protector, ensuring the safety and reliability of your water heating system.

This tankless water heater is compatible with natural gas fuel sources and is designed to operate at an altitude of up to 6,500 feet above sea level. It comes with a comprehensive 10-year limited warranty on the heat exchanger and a 3-year limited warranty on parts, providing you with peace of mind and long-lasting performance.

In summary, the Smith C4MA-320E Natural Gas Tankless Water Heater is an excellent choice for homeowners seeking a high-performance, energy-efficient, and reliable water heating solution. With its advanced features, compact design, and durable construction, this unit is sure to meet your hot water demands while helping you save on energy costs.

The Smith C4MA-320E natural gas tankless water heater is a popular choice for those seeking energy efficiency and continuous hot water supply. Here are some pros and cons that can help you make an informed decision about purchasing this model:

1. Energy Efficiency: Tankless water heaters do not store water, so they do not lose heat like traditional storage tank water heaters. This results in significant energy savings.

2. Endless Hot Water: Since the water is heated on demand, you can have an endless supply of hot water.

3. Compact Size: Tankless water heaters are much smaller than traditional storage tank water heaters, making them ideal for homes with limited space.

4. Long Lifespan: Tankless water heaters have a longer lifespan than traditional storage tank water heaters, with an average lifespan of around 20 years.

5. Low Standby Losses: Since the water is not stored in a tank, there are no standby losses, which can result in additional energy savings.

1. Initial Cost: Tankless water heaters have a higher upfront cost than traditional storage tank water heaters.

2. Installation Cost: The installation cost of a tankless water heater can be higher than that of a traditional storage tank water heater due to the complexity of the installation process.

3. Compatibility: Not all homes are suitable for tankless water heaters, as they require a constant water supply and sufficient water pressure.

4. Maintenance: Tankless water heaters require regular maintenance to ensure optimal performance and longevity.

5. Cold Water Sandwich: With on-demand heating, there can be a brief delay between turning on the hot water tap and the water reaching the desired temperature, resulting in a "cold water sandwich" effect.

In conclusion, the Smith C4MA-320E natural gas tankless water heater offers several advantages, including energy efficiency, endless hot water supply, compact size, long lifespan, and low standby losses. However, it also comes with some disadvantages, such as a higher upfront cost, installation cost, compatibility issues, maintenance requirements, and the cold water sandwich effect.

If you have the budget for the upfront and installation costs, and your home is suitable for a tankless water heater, then the Smith C4MA-320E natural gas tankless water heater can be a worthwhile investment for its energy savings, long lifespan, and endless hot water supply. However, if you have limited budget or your home is not suitable for a tankless water heater, then a traditional storage tank water heater may be a more cost-effective and practical option. Ultimately, the decision depends on your specific needs, budget, and home conditions.

Details:

Smith model is a reliable choice for heating needs. Smith Commercial 1990 btu 2.8 GPM Indoor Natural Gas Tankless Water Heater is a high efficient and compact unit designed for whole house heating. With a voltage of 110/120 V and an amperage 133 Amps, this.O. Please see pictures as they are part of the listing and ask questions when interested.

Free Shipping. With a power input of 32kW, this tankless water heater can provide instant hot with flow activation just 2.8 GPM. Requires two 70 breakers on #6 wire. The heater can be installed in various locations such as walls and indoor spaces, making it a versatile option for both residential commercial use.

part #: c4ma320e prices

• $750.00-$1199.00

specifications wateheat:

• brand: A. O. Smith
• mpn: C4ma-320e
• power source: Gas
• lp: Liquefied Petroleum Gas
• ng: Natural Gas, Propane Gas, Propane Liquid
• color: Gray
• water connection: 3/4 In Npt
• type: Tankless Water Heater/boiler
• unit type: Unit
• water connection location: Top
• heating system: Instantaneous
• voltage: 110/120 V
• amperage: 133 Amps
• btu/h heating rating: 199000
• jacket diameter: Heater
• features: Compact, Indoor
• minimum flow activation: 2.8 Gpm
• water temperature range: 100 F To 140 F
• mounting location: Outdoor, Wall, Whole House, Indoor
• water heater profile: Compact
• power: 32kw

payments wateheat:

• other
• credit card: Mastercard
• wallet: Paypal

returns wateheat:

• time: 30 Days
• method: Money back
• paid by: Seller
• policy: Returns Accepted

seller wateheat:

• rating: 99.8%
• # reviews: 9135
• city: Defiance, Ohio

offer wateheat:

• sold: 0
• availability: In Stock
• started: November 9, 2025
• quantity: 1
• options: Ship-to-home

general wateheat:

• Heating, Cooling Air > Water Heaters > Tankless Water Heaters
• condition: Open box

shipping wateheat:

• service: Standard
• class: Standard
• cost: $0.00
• type: Fixed
• transit: 4-8 Days

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