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  3. RHEEM 100264187

RHEEM 100264187 Performance Gallon Ultra Nox Natural Gas Water Heater 40 38 000-BTU

100264187 Rheem Performance 40 Gallon 38 000 Btu Ultra Low Nox Natural Gas Water Heater

( Brand: Rheem ), ( Manufacturer Part Number: 100264187 ), ( Power Source: Gas ), ( Tank Lining Material: Glass ), ( Color: Gray ), ( Water Connection: 3/4 In Npt ), ( Type: Storage Tank Water Heater ), ( Tank Capacity: 21-40 Gal ), ( Unit Type: Gal ), ( Water Connection Location: Top ), ( Manufacturer Warranty: 3 Months ), ( Heating System: Storage Tank ), ( Voltage: 240 V ), ( Item Height: 32 In ), ( Btu/h Heating Rating: Multiple Btuh Heating Rating ), ( Water Temperature Range: 100 F To 140 F ), ( Smart Home Protocol: Wi-fi )

Review RHEEM Performance 40 Gallon 38 Btu Ultra Low Nox Natural Gas Water Heater

The Rheem Performance 40 Gallon 38 Ultra Low NOx Natural Gas Water Heater, model number 100264187, is a high-performance and energy-efficient solution for your hot water needs. This water heater is designed with a 40-gallon capacity, making it an ideal choice for medium-sized households.

The 38 Ultra Low NOx model complies with the strictest NOx emission standards, ensuring that it produces minimal nitrogen oxide emissions during operation. This not only makes it an eco-friendly option, but it also meets the requirements for California's South Coast Air Quality Management District (SCAQMD) Rule 1111.

This water heater features a high-performance glass-lined tank, which provides excellent durability and resistance to corrosion. The tank is also insulated with a high-density, closed-cell, polyurethane foam insulation, which helps to maintain the temperature of the water and reduce standby heat loss.

The Rheem Performance water heater is equipped with a powerful and energy-efficient Ventless Direct Vent system. This system allows the water heater to be installed in areas where a traditional venting system would not be possible, such as inside a garage or in a room without an exterior wall.

Additionally, this water heater comes with a number of advanced features to ensure optimal performance and convenience. These include a high-recovery rate, which allows the water heater to heat up water quickly and efficiently, and a digital temperature control, which allows you to easily set and maintain the desired water temperature.

The Rheem Performance 40 Gallon 38 Ultra Low NOx Natural Gas Water Heater is also backed by a limited 6-year tank warranty and a 1-year parts warranty, providing you with peace of mind and protecting your investment. With its high performance, energy efficiency, and advanced features, this water heater is an excellent choice for any home.

The Rheem Performance 40 Gallon 38 Ultra Low NOx Natural Gas Water Heater, model number 100264187, is a popular choice for those seeking an energy-efficient and environmentally friendly water heating solution. Here are some pros and cons that might help you make an informed decision:

Pros:

1. Energy Efficiency: This water heater is ENERGY STAR certified, which means it meets the U.S. Department of Energy's guidelines for energy efficiency. It has a first-hour rating of 62 gallons, meaning it can deliver 62 gallons of hot water within the first hour of use.

2. Ultra-Low NOx Emissions: This water heater is designed to meet the strictest emission standards for nitrogen oxides (NOx). It produces 95% less NOx than the maximum allowable limit.

3. Durable Construction: The tank is made of heavy-duty, commercial-grade glass-lined steel that is designed to resist corrosion and provide long-lasting performance.

4. Easy Installation: The water heater comes with a factory-installed draft diverter and a pre-assembled intake and exhaust piping kit, making installation easier and faster.

5. High Recovery Rate: With a recovery rate of 11.2 gallons per hour, this water heater can quickly heat up water for larger households.

Cons:

1. Size: This water heater is larger than some other models, requiring a larger installation space. It measures 63.5 inches (H) x 23 inches (W) x 20 inches (D).

2. Price: The Rheem Performance 40 Gallon 38 Ultra Low NOx Natural Gas Water Heater is more expensive than some other models due to its advanced features, such as energy efficiency and ultra-low NOx emissions.

3. Venting Requirements: This water heater requires a direct vent system, which may add to the installation cost and complexity. It cannot be installed in areas with high humidity or where the temperature falls below 45 degrees Fahrenheit.

Conclusion:

The Rheem Performance 40 Gallon 38 Ultra Low NOx Natural Gas Water Heater is a high-performance, energy-efficient, and environmentally friendly option for those seeking a natural gas water heater. Its advanced features, such as ultra-low NOx emissions and a high recovery rate, make it a great choice for larger households. However, its larger size and higher price tag may be a deterrent for some. Ultimately, if energy efficiency, low emissions, and high performance are your priorities, this water heater is worth considering. If you have a smaller budget or limited installation space, you may want to explore other options.

Recommendation:

If you are looking for a natural gas water heater with advanced features, including energy efficiency and ultra-low NOx emissions, the Rheem Performance 40 Gallon 38 Ultra Low NOx Natural Gas Water Heater is a great option to consider. Its high recovery rate and durable construction make it a reliable choice for larger households. However, be sure to factor in the larger installation space and higher price tag when making your decision. If you have a smaller budget or limited installation space, you may want to consider other models with similar features but more compact sizes and lower prices.

Details:

Pickup only, price negotiable in person only. The Rheem Performance 40 Gallon Natural Gas Ultra-Low NOx Water Heater does not require an electrical outlet and features push-button ignition for match-free start up. Bought new and only used for minimal time decided to switch solar/thankless water heater. Message is interested or have any questions.

Two to four people household. Has been kept covered and dust-free.

part #: 100264187 price

  • $500.00

specifications wateheat:

  • brand: Rheem
  • mpn: 100264187
  • power source: Gas
  • tank lining material: Glass
  • color: Gray
  • water connection: 3/4 In Npt
  • type: Storage Tank Water Heater
  • tank capacity: 21-40 Gal
  • unit type: Gal
  • water connection location: Top
  • manufacturer warranty: 3 Months
  • heating system: Storage Tank
  • voltage: 240 V
  • item height: 32 In
  • btu/h heating rating: Multiple Btuh Heating Rating
  • water temperature range: 100 F To 140 F
  • smart home protocol: Wi-fi

offer wateheat:

  • started: April 11, 2026
  • availability: In Stock
  • sold: 0
  • quantity: 1
  • options: Seller-arranged-local-pickup

payments wateheat:

  • other
  • wallet: Paypal
  • credit card: Discover

general wateheat:

  • condition: Used
  • Heating, Cooling Air > Water Heaters > Standard Water Heaters

returns wateheat:

  • policy: No Returns

shipping wateheat:

seller wateheat:

  • rating: 100.0%
  • # reviews: 32
  • city: Tomales, California
power source: gas, tank lining material: glass, water connection: 3/4 in npt, type: storage tank water heater, tank capacity: 21-40 gal, unit type: gal, water connection location: top, manufacturer warranty: 3 months, heating system: storage tank, voltage: 240 v, item height: 32 in, btu/h heating rating: multiple btuh heating rating, water temperature range: 100 f to 140 f, smart home protocol: wi-fi,
category: home & garden > heating, cooling air > water heaters > standard water heaters, color: gray, sku: 7828069540478603,

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1 offer $500.00 USD
  • Offer #1: $500.00 price + $Calculated shipping estimate = $500.00* total. Has been kept covered and dust-free. The Rheem Performance 40 Gallon Natural Gas Ultra-Low NOx Water Heater does not require an electrical outlet and features push-button ignition for match-free start up.+$Calculated shipping

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