Tankless 7+ GPM Water Heaters

Many of the tankless heaters in this category can run into four figures for cost. Installation quotes can run that high as well, but serious DIY-ers have been capable of installing it. If you are not one, you will probably need help.

These tankless heaters can handle multiple demands on it in an average house. Consumers love the space that they save and the quick hot water that they get.

If they are powered by natural gas, you might need a larger gas line running into your home. Even this size of tankless heater is not recommended for extra-large homes with more than four bathrooms.

Rheem makes several models in this heavy-duty category, including a direct-vent natural gas heater that has a 9.5 GPM output, as well as both outdoor and indoor propane 9.5 GPM models.

Rinnai makes a RL75iN model that provides 7.5 GPM and is powered by natural gas and a propane model with the same output. It also produces a natural gas heater that gives a hefty 9.4 GPM output. The 7.5 GPM models are said to easily heat water for three sources simultaneously, while the 9.4 GPM model can handle five appliances/showers at a time, a real advantage of these larger models.

Noritz also makes a natural gas heater that provides 8.4 GPM and has drawn solid reviews.

Tankless 7+ GPM Water Heaters – High to low Ratings

Rinnai RL75iN

Rinnai RL75iN Natural Gas Tankless Water Heater

Rating: (4.6 out of 5 stars)
If you’re lucky enough to live in areas where there is natural gas, then purchasing the Rinnai RL75iN Natural Gas Tankless Water Heater is your best option. This water heater is suited for use in two to three bathroom homes, and delivers up to … [ more ]
Brand:Rinnai
Size:7.5 GPM
Price Indication:
$850 – $950

Rinnai RL94iP

Rinnai RL94iP Propane Tankless Water Heater, 9.4 Gallons Per Minute

Rating: (4.4 out of 5 stars)
The Rinnai RL94iP tankless water heater is the propane counterpart of the RL94iN that similarly delivers 9.4 gallons per minute (GPM) of hot water. With the RL94iP you have sufficient supply of hot water to five plumbing fixtures or water-intensive appliances … [ more ]
Brand:Rinnai
Size:9.4 GPM
Price Indication:
$950 – $1050

Noritz NRC111-DV NG

Noritz NRC111-DV NG Condensing Tankless 8.4 GPM Natural Gas Water Heater

Rating: (4.3 out of 5 stars)
This indoor only whole house model activates at a low 0.05 GPM and at 105oF, is capable of delivering 10.6 GPM during summer with a 70oF ground temperature, and 6.2 GPM during the winter with a 45oF ground temperature. Taking two showers simultaneously or even… [ more ]
Brand:Noritz
Size:8.4 GPM
Price Indication:
$1500 – $1700

Rinnai RL94iN

Rinnai RL94iN Natural Gas Tankless Water Heater, 9.4 Gallons Per Minute

Rating: (4.2 out of 5 stars)
Using natural gas as the power source of your water heater is the least expensive way to go; make the heater a tankless and you’ve got a power combination in savings. So, if you’re in areas with natural gas, try the Rinnai … [ more ]
Brand:Rinnai
Size:9.4 GPM
Price Indication:
$950 – $1050

Navien NR-210A

Navien NR-210A Condensing Tankless Water Heater with Pump and Buffer Tank, Natural Gas

Rating: (4.1 out of 5 stars)
New technologies in water heating offer efficiencies that were unheard of decades ago, and an increasing number of manufacturers, like Navien, continue to improve on existing ones. The Navien NR-210A Condensing Tankless Water Heater uses … [ more ]
Brand:Navien
Size:7 GPM
Price Indication:
$1500 – $1700

Rheem RTG-95DVN

Rheem RTG-95DVN Direct Vent Indoor Series 9.5 GPM Natural Gas Tankless Water Heater

Rating: (3.9 out of 5 stars)
With the popularity of oversized tubs and luxury bathrooms the demand for large volumes of water at low cost is increasing. Rheem provides a solution with its RTG Series. The RTG-95DVN Direct Vent Heater provides a stream of hot water continuously while … [ more ]
Brand:Rheem
Size:9.5 GPM
Price Indication:
$900 – $1000

Eternal GU145S

Eternal GU145S Condensing Hybrid Water Heater, 14.5 GPM

Rating: (3.6 out of 5 stars)
The Eternal GU145S provides 14.5 GPM of hot water, which is more than enough to run three fixtures or appliances at once. It also works perfectly well with a recirculating pump and has a built-in two gallon mini-tank to immediately provide you with hot water … [ more ]
Brand:Eternal
Type:Hybrid
Price Indication:
$1400 – $1500

Navien NR-240A

Navien NR-240A (CR-240A) Tankless Hot Water Heater with Circulating Pump and Buffer Tank

Rating: (3.5 out of 5 stars)
Similar to the Navien NR-210A, the NR-240A is a tankless hot water heater that has a built-in circulating pump and buffer tank except that this model delivers 11 gallons per minute at 45oF rise. In colder climates, the unit has a maximum flow rate of 6 GPM … [ more ]
Brand:Navien
Size:7 GPM
Price Indication:
$1500 – $1700