Rinnai R75LSe Natural Gas Tankless Water Heater, 7.5 GPM

by Rinnai

Product Description

From the Manufacturer

For outdoor installation only. The R75LSe delivers up to 7.5 gallons of hot water per minute (GPM), making it ideal for two to three-bathroom homes. Easy to install on any exterior wall, the R75LSe frees up interior space and saves on installation and construction costs.

Product Description

For outdoor installation only. The R75LSe delivers up to 7.5 gallons of hot water per minute (GPM), making it ideal for two to three-bathroom homes. Easy to install on any exterior wall, the R75LSe frees up interior space and saves on installation and construction costs.

Product Details

• Item Weight: 52 pounds
• Shipping Weight: 52.2 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
• ASIN: B002S3OGSY
• Item model number: R75LSe-N
• Average Customer Review: 5.0 out of 5 stars  See all reviews (6 customer reviews)
• Amazon Best Sellers Rank: #82,067 in Home Improvement (See Top 100 in Home Improvement)

Customer Reviews

Most Helpful Customer Reviews

26 of 27 people found the following review helpful:

5.0 out of 5 stars Rinnai R75Sle, April 5, 2010

By 

Tyler L. Cole - See all my reviews
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Amazon Verified Purchase

This review is from: Rinnai R75LSe Natural Gas Tankless Water Heater, 7.5 GPM (Tools & Home Improvement)

Keep in mind I have only recently installed my Rinnai on-demand water heater. It works perfectly. It comes with the water temp. set @ 120 degrees. Your installer will probably not re-set the temerature higher since it may be against state law. You'll have to do it yourself. It's not complicated but you'll have to find the tiny row of red buttons inside the unit. They are found on the right side of the unit as facing it. I wanted an outdoor unit since I did not want the expense of venting it that is required with an inside unit. Also safer.

Think about your winter temperatures. I purchased a pipe-enclosure unit that attaches to the bottom of your water heater. Stuff it with insulation. I used the kind that comes on a roll. Doing this will protect your pipe assembly unit from wind, freezing, and critters. The unit itself is protected to minus 30 degrees.

I found that 125 degree hot water is perfect. 120 is not enough. You'll love endless hot water. You can buy a flushing kit called Flow-Aide from Whitlam...[...]. It your water is somewhat hard you will want to flush your unit once or twice a year. It disolves lime, water scale and deposits in the applicance. If your water is extremely hard you ought to consider a house water filter and sediment filter. This is true especially if you have a well such a I do. The flushing kit comes with hoses, pump, bucket and flow-aide chemical. Make sure you buy a unit that is large enough to handle your needs. If you don't have a 2PSI gas service you will need to use a 3/4" dedicated gas line to your unit.

We love it, so far.

17 of 17 people found the following review helpful:

5.0 out of 5 stars Working great, December 2, 2010

By 

David Jenkinson (Auburn, WA USA) - See all my reviews
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Amazon Verified Purchase

This review is from: Rinnai R75LSe Natural Gas Tankless Water Heater, 7.5 GPM (Tools & Home Improvement)

This thing works great. After getting several quotes from plumbers in the area, whose quote was anywhere from $3000 to $5000 to install one of these, I had almost given up. I finally decided to buy one myself and do the install myself. I did lots and lots of research, I do not recommend if you are not the handy type, but I am, and it worked out. I also bought the lower shroud which covers the plumbing, as another person did in this thread, from a local plumbing store, to prevent freezing of plumbing in the winter. I also put insulation within this lower shroud. It's been a couple months and so far so good. Nice smooth flow, constant temperature, it's great knowing I am not heating water when I am not using water. I recommend.

13 of 13 people found the following review helpful:

5.0 out of 5 stars Great Tankless Heater, March 7, 2011

By 

HurstCastle - See all my reviews

Amazon Verified Purchase

This review is from: Rinnai R75LSe Natural Gas Tankless Water Heater, 7.5 GPM (Tools & Home Improvement)

We had a 7-year old Tagaki (made and sold under Bosch AquaStar label) unit go bad - heat exchanger leaked. I was very leary about getting another tankless. Did a bunch of research and talked to local contractors. Noritz and Rinnai seemed to be overwhelming favorites among local plumbers. This unit was priced right and had commercial burner and 12 year warranty for fraction of the price of a Noritz. Straight forward installation and performs flawlessly. Outdoor mount with no venting required - blows out front of unit. I'm very impressed with unit's design and operation. Kids set the temp control to 106 for showers, and adults are preferring to set at 108 or 110. And yes, you can feel the difference with a bump of 2 degrees! Don't need to mix in cold water to get shower right once you know your favorite temp. Easily operating 2 showers simultaneously. Crank up the heat to 120+ for dishwasher, etc. Easy to operate.

IMPORTANT to flush/maintain every 6 months for longevity - or you'll end up replaceing early (as we did with the Takagi unit). If you have hard water, consider a descaler on cold water inlet with replaceable cartridge (around $25) every 6 months. Priceless.