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NHW700-199AE - Non-Condensing Tankless Water Heater - Outdoor, 199,000 BTU

NHW700-199AE - Non-Condensing Tankless Water Heater - Outdoor, 199,000 BTU

£850.00
£850.00 £0.00
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Navien NHW700-199AE - Non-Condensing Tankless Water Heater - Outdoor, 199,000 BTU

The Navien NHW700-199AE is a high-capacity, non-condensing tankless water heater built for outdoor residential applications. Designed to operate efficiently in a variety of climates, it delivers up to 199,900 BTU per hour and supports a maximum flow rate of 9.5 gallons per minute at a 35°F rise. The unit is equipped with Navien’s patented NaviTech™ stainless steel heat exchanger and a stainless steel Low NOx burner for durability and cleaner combustion. With a Uniform Energy Factor (UEF) of 0.81, the NHW700-199AE offers energy-efficient performance in a compact footprint.

This model comes with a built-in recirculation pump and buffer tank, helping to reduce hot water wait times and eliminate cold water bursts during demand cycles. It includes a built-in control panel for temperature adjustment and diagnostics, and is factory-configured for natural gas with an optional field conversion kit for propane. Safety features such as a flame rod, APS, high-limit temperature switch, and vent installation detector are integrated for peace of mind. The unit installs outdoors with NaviVent™ 3" x 5" concentric venting and requires no additional venting accessories.

Features

  • Outdoor installation design
  • 199,900 BTU/h input
  • UEF rating of 0.81
  • 9.5 GPM at 35°F rise, 7.4 GPM at 45°F rise
  • Patented NaviTech™ stainless steel heat exchanger
  • Stainless steel Low NOx burner (20 ppm)
  • Built-in recirculation pump and buffer tank
  • Electronic ignition system
  • Built-in control panel for temperature setting and diagnostics
  • Factory set for natural gas, field convertible to propane
  • Vents using NaviVent™ concentric 3" x 5" system
  • Safety features: flame rod, air pressure sensor, vent installation detector, water temp high limit switch, power surge fuse

Applications

  • Residential outdoor water heating
  • Homes needing high hot water output with minimal indoor space use
  • Systems requiring reduced hot water wait time
  • Installations in areas with natural gas or propane fuel availability
  • Regions requiring Low NOx emissions compliance

Exclusive NaviTech stainless steel heat exchanger
The NWH-A series non-condensing tankless water heaters feature a stainless steel heat exchanger to deliver unmatched durability and performance.

ComfortFlow built-in recirculation system
The patented ComfortFlow system is the first to include a buffer tank, recirculation pump and fine-tuned controls into a tankless water heater.

NHW-A built-in control panel
Allows you to adjust water temperature, operation status and troubleshooting.

Built-in Air Pressure Sensor (APS)
Monitors vent system for blockage, automatically compensates for range of vent lengths, helps maintain proper air/gas ratio during operation, and ensures consistent hot water output during changing conditions.

Patented NaviTech stainless steel gas burner
Designed and manufactured by Navien to burn gas at higher efficiency than other system on the market.

Recirculation control built into circuit board
Ensures proper system setup, and reduces the need for additional components, saving installation time and cost.

Built-in Water Adjustment Valve (WAV) & Mixing Valve
Control flow to maintain setpoint and stabilize water temperature during flow changes.

 

 

 

 

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5.0 / 5.0 (2142 Reviews)
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Review image 1
Tyrone W
Verified
This is a great little dryer overall! It’s fairly quiet, lightweight, and works well for smaller loads—it dries them quickly and efficiently. It can fit a set of queen sheets, but those take about two hours to dry, and you’ll need to pause and rearrange them partway through for best results.
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Adam N.
Verified
This is a wonderful little machine! It fits tiny places, is easy to move around, and does a good job of drying the clothes. I mainly wanted it for sheets, towels, & lightweight blankets. I washed my 2 tablecloths and 4 chair covers tonight. Within a couple of hours, they were back in place clean and free of cat hair. I dried the load in two batches, first the tablecloths and then the 4 chair covers. Both dried very quickly.
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John B.
Verified
We purchased this compact dryer for our 2008 Leopard 40 catamaran, and it has been a fantastic addition. We’re in the Caribbean where the wind can be very strong, and we noticed our sheets were starting to fray from flapping so hard while air-drying. This dryer solved that problem perfectly.
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Ricky -.
Verified
Works well for lightweight items. Heavy items like jeans towels, flannel don't come out as fluffy. They have more wrinkles than in a normal dryer and take a lot longer. Works well for small loads other than that. It fits in our 5th wheel rv trailer compartment and we just leave the door up with the vent hose pointed to the outside. Our trailer came with small washer but no dryer.
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Terry T.
Verified
I definitely recommend this product. It works so well! The only think I would have liked it if it came with a few extra lint filters. They do need to be replaced eventually!
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Scott J.
Verified
I love it. Works great in my apartment to where I can do laundry as I go instead of having to go down to laundry room and don’t have to have change.
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Kristopher...
Verified
It’s just my teen and I in a small house so this sized dryer works well for us. Space is a valuable commodity around here so this was a great find. I also use a portable washing machine that pairs well with this dryer. This dryer offers some flexibility in that it can be wall mounted (mounting parts included), placed on a solid floor or set on a shelf. To maintain safe airflow you’ll want to avoid enclosed cabinets however. I’m planning on getting a small rolling dolly to put it on but for now it’s just on our tile flooring.
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Jason N.
Verified
I bought this for my office. Very ease to use. Coffee comes out very hot and I love that. The taste of this coffee is amazing. Worth the price.
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Jeffrey V.
Verified
I just received mine yesterday, ran the cycle perfectly fine to clean it out for the first time. Made my first cup of coffee heaven this morning! This was a pure party in my mouth experience! I had to google a few things for use but definitely worth the purchase!
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Patrick L.
Verified
Fantastic!! Love everything about it! The frother is so much fun, it’s not just for the coffee I use it for hot chocolate and it’s so yummy. Easy breezy to use. For the price you can’t beat it but be sure and get the frother too!
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Josh H.
Verified
I love my Nespresso! I have had it for a few months now, and have had no issues. I am one of those girls that usually gets an iced coffee on her way to work every morning and this has broken that habit! I Have saved so much money since buying this machine.
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Edward S.
Verified
Great TV for viewing and even gaming. Great picture. Perfect for a spare room or kids room. Sounds decent. Roku isn't my favorite operating system but it gets the job done with ease. The remote is a regular Roku remote which is just fine it works a little slow but it works.
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Dale H.
Verified
TV works great and picture is good. It is in my guest room, so I do not watch on it very often. Easy set up also. Very happy with it.
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Jonathan...
Verified
Very nice inexpensive smart tv. The sound quality is not great, but better than some. We are able to use it without a sound bar so that is a plus.
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Michael R.
Verified
Awesome little TV!! Works really good. Colors are sharp and sound quality great. Very happy with my purchase.
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Sarah K.
Verified
Works as it should. Nothing fancy. Pictures decent. You get what you pay for. Price was right for my situation. Was easy to set up with my Roku.