The 40-Gallon Gas Water Heater is the perfect choice for large households or commercial spaces. It features a durable stainless steel tank and an efficient gas burner that helps reduce energy costs. The advanced burner design helps to reduce hot water recovery time and ensures consistent hot water delivery. It also has a top-mounted temperature and pressure relief valve that helps to prevent damage from over-pressurization. This water heater is designed for easy installation and features a 6-year limited tank and parts warranty. With its combination of power, efficiency, and convenience, the 40-Gallon Gas Water Heater is an ideal choice for any space.
Our 10 Best 40 Gallon Gas Water Heater, Expert-Recommended Picks
1#. Reliance 6-40-NOCT 400 35500 BTU Tall Natural Gas Water Heater, 40 gallon
Features
Pex polymer lined heat trap nipples
Aluminum anode rod
For installations up to 10
2#. AO Smith 40 Gallon 40,000 BTU Water Heater
Features
40 gallon tank
40,000 BTU
GCR-40 standard vent
6 year limited tank warranty
3#. AO Smith 40 GAL 36,000 BTU Water Heater
Features
40 gallon tank
36,000 BTU gas burner
GCR-40 standard vent
6 year limited tank warranty
4#. Rheem 72-40-2 240V / 4500W 40 Gallon Electric Water Heater
Features
Rheemglas lined tank
R-Foam insulation
Anode Rod protects against corrosion
Automatic temperature control thermostat
Direct immersion heating element
5#. FOGATTI Natural Gas Tankless Water Heater, Indoor 7.5 GPM, 170,000 BTU White Instant Hot Water Heater, InstaGas Comfort 170 Series
Features
We recommend that all installations of units must be done by the local building and plumbing codes of the installation location and installation be done by a licensed professional.
The tankless design means you don’t have to wait 30 minutes for preheating and unlimited use of hot water.
170,000 BTU high heating capacity and maximum 7.5 GPM. It is suitable for 3-4 outlet points, which can satisfy whole family. UEF over 0.81, the high energy conversion rate can effectively reduce energy loss.
Excellent quality CSA certified in the United States and Canada. Adopting the world’s most advanced technology, superior safety and durability.
Using built in forced exhaust fan at the bottom ensures stable combustion and eliminates the influence of external wind. Compact design for easy installation.
Fogatti provides 5 years warranty on the heat exchanger and 2 years warranty on other parts. The above-mentioned labor costs are extra from 31 days.
6#. Rheem Mid-Efficiency 7.0GPM Indoor Natural Gas Tankless Water Heater
Features
Continuous Hot Water – never run out of hot water, even with back-to-back showers
Tankless Gas Water Heaters are cost saving and energy efficient
Reduces Energy Consumption – Automatically adjusts the amount of energy required to heat the water you need
Reduces Energy Consumption – All Rheem tankless gas models automatically adjust the amount of energy required to heat the water you need.
Easy, Convenient Control – Rheem’s tankless remote electronic thermostat allows easy adjustment of water temperature ranging from 85˚F–140˚F
7#. Tankless Water Heater, 3.17 GPM Instant Hot Natural Gas Water Heater with Constant Temperature, Indoor (Natural Gas)
Features
Note: Please download and read the installation manual and product manual carefully when purchasing the product to ensure that your installation environment is consistent with this product. When installing, please strictly follow the installation manual and installation instruction video, otherwise it may not work. If you have any questions about the product, please contact us by email. We have a professional technical support team.
【Tankless Instant Hot Water Heater】No need to preheat before using the tankless water heater. As soon as you turn on the tap, the water flows with your desired temperature.
【High Sensitive Touch Led Display】Comes with smart digital LED display high-definition large screen, freely adjustable the temperature between 30℃-65℃.
【Multiple Security Protection】The natural gas water heater is upgraded with 12 protection methods to ensure your safety. Such as dry burning protection, over 65℃(149 °F) protection, leakage protection, etc.Note: In cold weather, if the water heater is not used for a long time, it is necessary to open the pressure relief valve to drain the residual water in the water heater to prevent the exchanger or water pipe from freezing and swelling.
【Energy and Money Saving】The hot water heater adjusts power input based on flow rate and temp setting in real time. Summer/winter 2 modes to save up to 60% on your natural gas costs.
【Quality Material】Made with brushed stainless steel material, the natural gas water heater has the function of high temperature resistance, corrosion resistance. Built-in oxygen-free copper water tank, long service time.Note: This product must be installed with a ventilation and smoke exhaust pipe for normal use.
NOTE: This product does not have a serial number. If you don’t know how to install a water heater at all, it is recommended not to buy it.
8#. Bosch Thermotechnology 40-Gallon Tall Electric Storage Water Heater, Gray
Features
APPLICATION: Dimensions : 18.25″ W x 61.60″ H x 18.25″ L. Perfect size for a maintenance closet, access closet under the stairs, crawl space. Ideal for replacement projects.
DURABILITY: Two magnesium anode rods for extra tank protection. Dielectric heat trap. Heavy gauges steel tank for extra years of trouble-free service. Glass-lined steel tank to help prevent corrosion.
WARRANTY: 10-year tank and parts limited warranty
EFFICIENCY: HFO foam insulated, reducing fuel costs and increasing energy efficiency. Double heating elements conserve energy. Incoloy elements for a long-lasting unit
CONVENIENCE: Factory-installed electric hot and cold water connections for extended tank life. Easy-to-use plastic drain valve for maintenance. Factory-installed heat traps reduce heat loss. Temperature and pressure relief valve included. Fully-automatic surface mount thermostats
9#. Mizudo Natural Gas Tankless Water Heater 3.6 GPM, 80,000 BTU Indoor Installation Instant Hot Water heater
Features
【Instant Hot Water Heater】Tankless water heaters can provide endless hot water on demand for 2- 3 water points.
【Comfortable Bathing Experience】3.6 GPM hot water flow, precise temperature control, no water temperature sandwich.
【Premium design and Durable】Adopt oxygen-free copper water tank, reduce heat loss, high efficiency and durability.
【Compact Design】Save over 50% of available space compared to tank water heater.
【Quality Service】If you encounter product quality problems, you can contact us by phone, email and message, and we will provide service according to the warranty policy.
10#. FOGATTI Natural Gas Tankless Water Heater, Indoor 5.1 GPM, 120,000 BTU Instant Hot Water Heater, InstaGas Classic 120 Series
Features
【Smaller size and better performance】It is only 1/4 the size of a 50 gallon tank water heater, yet it produces approximately 5.1 GPM of hot water through 120,000 BTU for both bathroom and kitchen hot water demand. The highly integrated components also provide greater safety from water pressure surges without the need to install an expansion tank.
【Fast and endless supply of hot water】The heat exchanger quickly heats the water to a maximum of 140℉ in a short time, and the hot water is quickly piped through to the shower and tap. No need to wait for the water temperature to heat up slowly like a tank water heater. After that it continues to operate at approximately 5.1 GPM for 40 minutes, which is enough time to produce almost 200 gallons of hot water.
【Stable and comfortable temperature】Benefiting from the calculation and control of the heating power 1000/s by the chip, the temperature difference of the water can be precisely controlled within ±2°F.
【High compatibility and easy installation】Most tank water heaters have exhaust vent, water and gas pipe that can be universally used in tankless, requiring only a simple re-layout. If installing a tankless water heater in a new house, its compact size makes it easy to install. Of course, we recommend that all installations are carried out in accordance with local building and plumbing codes by licensed professionals.
【Excellent quality and service】CSA certification in the USA and Canada. Superior safety and durability using the world’s most advanced technology. FOGATTI provide 5 years warranty on heat exchanger and 2 years warranty on other parts.
