Best overall. Super High Efficiency Plus 9 GPM Residential 160,000 BTU Natural Gas Interior Tankless Water Heater. 57 $ 929. Only the size of a small suitcase, the RUCS65iN is compact, easy-to-install and perfect for indoor locations. Rheem RTGH-95DVLN 9. Company. Find Rinnai. Places Near North Richland Hills, TX with Rinnai Tankless Water Heaters. This process creates hot exhaust, which must be vented through stainless-steel flue pipes. RE160eN is the perfect combination of high efficiency, comfort and value in a natural gas non- condensing tankless water heater from Rinnai. An excellent, cost-effective option for households of four, the RU130iN is Energy Star certified and can cost as little as $140 per year to run. This score ranges from 0 to 10. 9. Diect Vent Tankless Wate Heate Installation and Opeation Manual — Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Uniform Energy Factor (UEF): 0. 74 each. It provides a continuous supply of hot water at a preset temperature. Peachtree City, Georgia, June 11, 2015 - Rinnai, the number-one selling brand of tankless water heaters in the United States and Canada, has introduced four new models – RUCS/RUS75 and RUCS/RUS65 for both indoor and outdoor applications - that expand its Ultra Series condensing line with mid- and lower-range maximum BTU. Enjoy Endless Benefits With Rinnai Tankless Water Heaters. Enjoy an endless supply of hot water with this high efficiency non-condensing propane fueled tankless water heater from Rinnai. Rheem. The Rinnai difference . Plus, with premium technology, increased energy efficiency, an improved Home Energy Rating. Ideal for small to medium homes or remodels. Rinnai's super high-efficiency plus condensing outdoor tankless water heater models offer the most advanced technology. Silver. • DO NOT obstruct combustion air to the appliance. Enjoy an endless supply of hot water with the RUCS75iN, our Super-High Efficiency condensing natural gas tankless water heater from Rinnail. Super High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Interior Tankless Water Heater. Stiebel Eltron DHC Trend Point-of-Use Electric Tankless Water Heater. Haltom City (5 miles) Hurst (6 miles) Bedford. HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass. With Rinnai Common Venting, up to eight tankless water heater units share the same vent system. How a Rinnai Tankless Water Heater Works. Technology to Improve Your Lifestyle. He helps anyone with plumbing, including speaking the truth about tankless. • Professional installation recommended, call 84-GO-Rinnai for assistance. • DO NOT install this water heater above 10,200 ft (3,109 m). Add to Cart. Every Rinnai tankless water heater is individually tested for quality before shipping. See individual business pages for full, detailed reviews. _____ Download the SENSEI™ brochure to look inside the vertically integrated components of the new SENSEI with advanced recirculation technology for superior product performance. In fact, Rinnai Tankless Water Heaters use up to 40% less energy than a traditional tank water heater. My point is that Rinnai doesn’t have hot water heaters and Rheem has a lot of them. 8 Gpm - Natural Gas. 06 USD. e. This item: Rheem 18kW 240V Tankless Electric Water Heater. 8 GPM Residential 199,000 BTU Interior Propane Gas Tankless Water Heater. on demand hot water heater. Noritz uses stainless steel casing on all ASME commercial units, while Rinnai don't. Ferguson is the #1 US plumbing supply company and a top distributor of HVAC parts, waterworks supplies, and MRO products. Plus, with premium technology, increased energy efficiency, an improved Home Energy Rating System (HERS). Benefits of a Tankless Water Heater. Now, with Smart-Circ, Rinnai RSC model water heaters learn your water usage patterns to start circulating hot water on your schedule, anticipating your hot water needs for a shorter wait and saving energy during times when you. The Rinnai difference . 2 Rinnai Tankless Water Heater Installation and Operation Manual WARNING If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury, or death. Rinnai Circ-Logic™ technology allows you to set recirculation patterns that coincide. – Training in installation of tankless water heaters. I installed Rinnai in my own home about 3 years ago. The Rheem RTEX-18 is one of the best value electric tankless water heaters out there, priced at just over $420 at the time of writing. Keep small children and animals away from the unit. If you can’t find what you need, contact Rinnai. Replaced a conventional water heater Tank with a Tankless Rinnai system. Now, with Smart-Circ, Rinnai RSC model water heaters learn your water usage patterns to start circulating hot water on your schedule, anticipating your hot water needs for a shorter wait and saving energy during times when you don't. Overall Rating: North Richland Hills Plumbers are rated 4. Free Shipping! Please select a finish. Recent reviews for North Richland Hills tankless water heater installation services. Only the size of a small suitcase, is easy-to-install, reliable, and perfect for outdoor locations. 5 GPM Residential 180,000 BTU Interior Natural Gas Tankless Water Heater (10) Questions & Answers (37) +5 Hover Image to Zoom $1006. This is usually located on the side of the heater’s combustion chamber. RE180iN. Regardless of the model, the cost of repair will cost between $170-$450. Step 3: Maintain water heater pressure specifications. Secure PaymentsIf you answer NO to any question, installation is not complete. 5 GPM Residential Outdoor Natural Gas Tankless Water Heater with 150,000 BTU Max Input and Electronic Water Control from the Value Series Model: V65EN. There is even the potential for energy savings and lower utility bills. Rinnai Tankless Water Heater Installation and Operation Manual 7 • Hot water outlet pipes leaving the water heater can be hot to touch. I have had this system for approx. Products; Tankless Water Heaters; Accessories; Featured Products; NEW NRCR w/ Recirc; EZ Series; Column 2 [Residential Image] Column 4 [Commercial Image] Column 3 [YouTube Video] About Us. Non-Condensing Tankless Water Heaters: This type of water heater burns propane or natural gas and then uses a primary heat exchanger that rapidly heats the water as it flows through the heater. Rinnai offers a 12-year warranty on their tankless water heaters, while Rheem offers a 10-year warranty. Chat live now. Compare. In fact, Rinnai Tankless Water Heaters use up to 40% less energy than a traditional tank water heater. The first unit was a Rinnai HE+. Residential. Only the size of a small suitcase, the natural gas RU180eN model is compact, easy-to-install and perfect for outdoor locations. Compare. 82: 0. The Rinnai Hydronic Air Handler System easily integrates with select tankless water heaters or boilers to deliver energy-efficient warmth. If you have any questions or feel that the manual is incomplete contact Rinnai at 1-800-621-9419. The Rinnai Hydronic Air Handler System easily integrates with select tankless water heaters or boilers to deliver energy-efficient warmth. com. $618. Purchase and install a rocker switch or “doorbell” style buttons to activate the NRCR “on-demand” mode to prime the pump for use only when you want it. Learn how to use the recirculation with on-demand accessories for your Rinnai water heater. Consumer financing and rebates are also often available. 4/5 stars from 391 reviews. Rinnai RUC98iN Indoor Natural Gas Tankless Water Heater. Proud U. Save you up to 35% in energy costs. 380. Super High Efficiency Plus View Energy Guide. Viessmann is the best, more expensive, but very reliable. Unlike many competitors, Rinnai makes the majority of our key components, allowing for consistent. 3 kWh. For a tankless unit to qualify, it must have a Uniform Energy Factor (UEF) of at least 0. Rinnai products provide peace of mind with warranties that surpass. Rinnai tankless water heaters last up to twice as long, and save energy-heating water only when needed . The North Richland Hills Tankless Water Heater Experts! If you have need of a quality affordable plumber specializing in Tankless Water Heaters in North Richland Hills Texas, call the professionals at Schrader Plumbing today. Wi-Fi Control Module for Rinnai Tankless Water Heaters. Ideal for small to medium homes or remodels. Rinnai RL75IP - RL75IP 180,000 BTU, Non-Condensing Indoor Tankless Water Heater (Propane)- <b>Overview</b><br> Rinnai Luxury Series Tankless Water Heaters take hot water performance higher, delivering the most impressive output of our non-condensing line. 2 months and have already seen the benefits of a tankless system in terms of financial savings. It heats water only when it's needed and has a 0. Warranty. -ft RAM (Rinnai America Manufacturing) Lakes facility in Griffin, Ga. RSC Model Series; RU Model. They were fast and fair priced. 2. Download the PDF file and enjoy the benefits of ThermaCirc360 technology. Its energy-efficient operation leads to big energy costs savings. Water Heaters. Improvement in reducing the carbon footprint of its tankless water heaters, boilers and direct-vent wall furnaces. Rinnai fault code 02 – No burner operation during freeze protection mode. Engineered expressly for the North American residential market, the EZ Series of high-efficiency, condensing tankless water heaters from Noritz America are designed to cut installation time and cost when replacing larger, storage tank-type units. All of the key components in the CU199 are designed for commercial requirements and manufactured by Rinnai, ensuring maximum quality and reliability from the industry leader in commercial tankless water heating solutions. Natural Gas. (April 23, 2018) – Rinnai America Corporation, manufacturer of the No. 61 $1182. com Rinnai High Efficiency Non-Condensing 8. $186. $118129. Now, with Smart-Circ, Rinnai RSC model water heaters learn your water usage patterns to start circulating hot water on your schedule, anticipating your hot water needs for a shorter wait and saving energy during times when you don't. We never run out. 4. The first two digits are the year and the second two digits are the month of manufacture. Only the size of a small suitcase, is easy-to-install, reliable, and perfect for outdoor locations. 00 /mo† suggested payments with 12 months† financing Apply Now Unlimited Hot Water Less space for heating gives you more space for living If you have the do-it-yourself skills to install a water heater on your own, be sure to consider the cost of any additional tools and materials you may need for the job. 4 GPM at a 35° temperature rise. View Commercial. View Tankless Page. The 180,000 BTU High Efficiency Natural Gas Tankless Water Heater is designed to supply continuous, on demand hot water for up to 2 to 3 bathrooms at the same time. Find wholesale prices on top Rinnai Propane Water Heaters. x 9. Only the size of a small suitcase, is easy-to-install, reliable, and perfect for outdoor locations. Enjoy an endless supply of hot water with the SENSEI™ RU160iN Super High Efficiency Plus condensing tankless water heater from Rinnai. Cascade Cables allow up to 24 water heaters to be connected and function. us *To achieve temperatures over 140° F (60° C), consult the Operation and Installation Manual. For an electric tankless water heater, we recommend the Rheem Performance RETEX-36. 230V AC 50Hz 1ph. Loose Gas connections or Improper venting (Recirculation of Exhaust Gas) Step 1: Understand the Issue. Rebates starting at $600 available from energy providers for 66952. Using a durable copper heat exchanger to optimize heat transfer,. Plus, with premium technology, increased energy efficiency, an improved Home Energy Rating System (HERS) Index Score and optimized LEED eligibility, our tankless solutions can increase your home's value. • DO NOT install this water heater above 10,200 ft (3,109 m). 95. Rinnai tankless water heaters last up to twice as long, have twice the warranty, and save energy as they only heat water when it is needed. With technology that operates only when hot water is needed, super-efficient heating coils, no pilot light and no storage tank to heat and reheat water, you save on energy and utility costs. As a result, customers see two decades plus of service, whereas most tanks are getting replaced in 10 - 15 years. Ideal for small to medium homes or remodels. [FEATURES] -Manage: Adjust the temperature for your water heating system with one tap…Rinnai Tankless Water Heater Installation and Operation Manual 7 • Hot water outlet pipes leaving the water heater can be hot to touch. It is installed outside our house between our two bathrooms. 516 N. We have had this Rinnai water heater for a year now so its time for a review. Rinnai products provide peace of mind with warranties that. • Install the vent system per local and na-tional codes. 4 GPM at a 35° temperature rise. 46. That means all key components are manufactured by Rinnai — to ensure Rinnai quality. 2 gpm, residential 9. RE180eP is the perfect combination of high efficiency, comfort and value in a propane gas tankless water heater from Rinnai. Reliability You Can Count On. Now, with Smart-Circ, Rinnai RSC model water heaters learn your water usage patterns to start circulating hot water on your schedule, anticipating your hot water needs for a shorter wait and saving energy during times when you don't. Rinnai Gas Multi-Point 17i Low NOx Internal Water Heater Revolutionise and go continuous flow with Rinnai high efficiency Low NOx multipoint water heaters. Rinnai Tankless Water Heater Installation and Operation Manual 3 If You Need Service ontact your local dealer/distributor or call Rinnai ustomer are at 1 -800-621-9419 Monday to Friday between 8 AM to 8 PM ET. Enjoy an endless supply of hot water with the RUCS75iN, our Super-High Efficiency condensing natural gas tankless water heater from Rinnail. • BURN HAZARD. • Install the vent system per local and na-tional codes. I do use the running water to rinse dishes for the dishwasher, fill the dog water dish, water. $1,85474. RINNAI Super High Efficiency Plus 11 GPM 199,000 BTU Natural Gas Interior Tankless Water Heater. Natural Gas. 4/5 stars from 460 reviews. Rinnai tankless water heaters are available with natural gas or propane fuel options and can be installed inside or outside. Shut off the main gas or turn off the circuit breaker for electrical devices. REP160iN is the perfect combination of high efficiency, comfort and value in a natural gas non-condensing tankless water heater from Rinnai. RU199IN 199,000 BTU Super High Efficiency Condensing Indoor Tankless Water Heater (Natural Gas) SKU: RU199IN. 4. Send a comment to your representative in Congress. 5 gallons of water per minute and has the option to connect two units to increase that capacity. This Rheem Performance Platinum High Efficiency Tankless Water Heater provides estimated energy cost savings of more than $1,100 over 12 years. Rheem RTGH-95DVLN Indoor Tankless Water Heater. Rinnai tankless water heaters are available with natural gas or propane fuel options and can be installed inside or outside. Rinnai’s super high-efficiency models offer sleek design, maximum output and an array of features ideal for the hot water demands of large homes. However, running it around four gallons per minute will cost you only about $130 a year. $5998. This guide applies to storage gas water heaters, instantaneous or tankless gas water heaters, electric resistance water heaters, and electric heat pump water heaters. 3 GPM, Natural Gas, Outdoor Installation. Only the size of a small suitcase, is easy-to-install, reliable, and perfect for indoor locations. Homeowner Features. Add to Cart. Model # RSC199iN SKU # 1001736504. 82 uniform energy factor (UEF). Rinnai Tankless Water Heater Installation and Operation Manual 7 • Hot water outlet pipes leaving the water heater can be hot to touch. "100% accurate water temperature control" Continuous flow water heaters are an advanced varient of traditional multipoint waters heaters, they are far more efficient than storage systems and are the. Rebates are also often available. 81-0. The front panel should only be removed when ser-vicing/maintaining or replacing internal components. Installing venting through a wall or roof. If you are installing a GTK15 Kit on one of the following tankless water heater models, follow the instructions in Section 2. Flow Rate @ 35°F Rise (gallons/min): 11 gal (US)/min. The Rinnai V75iN is a high-efficiency natural gas tankless water heater that perfectly blends efficiency, comfort, and value. Uniform Energy Factor (UEF): 0. With Rinnai Common Venting, up to eight tankless water heater units share the same vent system. RE199iN is the perfect combination of high efficiency, comfort and value in a natural gas non-condensing tankless water heater from Rinnai. 8). Super High Efficiency Plus 10 GPM Residential 180,000 BTU Natural Gas Interior Tankless Water Heater (13) Questions & Answers. Only the size of a small suitcase, is easy-to-install, reliable, and perfect for outdoor locations; Rinnai products provide peace of mind with. • DO NOT obstruct combustion air to the appliance. com 24 Hour Service - 7 Days a Week. com. To winterize your rinnai tankless water heater, start by turning off the power supply and disconnecting the water and gas lines. Reliability They Can Count On. Select a region. Tankless. Rinnai Tankless Water Heater Installation and Operation Manual 7 • Hot water outlet pipes leaving the water heater can be hot to touch. Why Rinnai. slide 1 to 3 of 3. Save $196. Only the size of a small suitcase, the propane fueled RU160iP model is compact, easy-to-install and perfect for indoor locations. Plus, they save energy by heating water only when it is needed. 0 mobile app features timers, programmable schedules and even allows you to. Rinnai non-condensing tankless water heaters last up to twice as long as tanks and have twice the warranty. Ideal for small to medium homes or remodels. RE140eN is the perfect combination of high efficiency, comfort and value in a natural gas non- condensing tankless water heater from Rinnai. Model # RSC199iN SKU # 1001736504. Our office support teammembers are experts in maximizing rebate and incentives while making the process simple and easy. • The integrated controller has a 1 year warranty on parts. Rinnai High Efficiency Non-Condensing 8. Best Bang for the Buck. Enjoy an endless supply of hot water with this high efficiency non-condensing natural gas tankless water heater from Rinnai. RE180iN is the perfect combination of high efficiency, comfort and value in a natural gas non- condensing tankless water heater. Electrical consumption. These boilers offer efficient heating with a modulating pump for consistent temperature control of water used in the heating system, efficient gas and less electrical consumption. You can even qualify for energy. As with any tankless water heater from Rinnai, it is compact and powerful enough to meet the needs of a busy home as it consistently delivers hot water around the home. Price: At $740, it’s moderately priced for the GPM and EF rating. Coshocton. Rinnai Tankless Water Heaters use up to 40% less energy than a traditional tank water heater. Built to commercial-grade standards, Rinnai tankless water heaters are individually tested, backed by the industry's best warranty, and compact enough to fit any space. Super High Efficiency 6. The most advanced models have a 4. Keep away from the water heater. us 5 Optimized Concentric Venting for Non-Condensing Models Rinnai Tankless Water Heaters were the first to use a unique concentric venting system – featuring an inner pipe for exhaust and an outer pipe for All of the key components in the CU199 are designed for commercial requirements and manufactured by Rinnai, ensuring maximum quality and reliability from the industry leader in commercial tankless water heating solutions. The draft rule would raise standards for tankless gas-fired water heaters to over 91 percent efficiency, while leaving the standards for tank gas-fired water heaters relatively untouched at 70 percent efficiency. Tankless Water Heater INTERNAL (INDOOR) MODELS: VE199i (REU-VE2737FFD-US) VE180i (REU-VE2432FFD-US) VE160i (REU-VE2125FFD-US) VE140i (REU. #7 · Dec 24, 2009. Compare Rinnai models, prices, and specs to find the perfect Rinnai Propane Tankless Water Heater for your application. With Rinnai Common Venting, up to 8 tankless water heater units share the same vent system. Uniform Energy Factor (UEF): 0. Rinnai Gas Multi-Point 17i Low NOx Internal Water Heater Revolutionise and go continuous flow with Rinnai high efficiency Low NOx multipoint water heaters. Super High Efficiency Plus 10 GPM Residential 180,000 BTU Natural Gas Interior Tankless. Every Rinnai tankless water heater is individually tested for quality before shipping. 367 Reviews. Only the size of a small suitcase, is easy-to-install, reliable, and perfect for outdoor locations. Very professional, efficient and tidy. onnecting gas lines, water lines, valves, and electricity. As Rinnai is a top brand, most of their water heaters are higher priced than those of many. Enjoy an endless supply of hot water with the SENSEI™ RSC160eN Super High Efficiency Plus condensing tankless water heater from Rinnai. from the Sensei Collection. Not Sold in Stores. Two-story house with 4 bathrooms plus kitchen. from the Value Collection. Find reviews, expert advice, manuals, specs & more. Free Delivery. Ideal for small to medium homes or remodels. A copy is provided with each tankless water heater in the rack system. RE140iP. Rinnai Rinnai Ultra Series 130,000 BTU Condensing Exterior Natural Gas Tankless Water Heater. • DO NOT install this water heater above 10,200 ft (3,109 m). Plumbing Services. The U. Please select a product category above to display all brochures, case studies, certifications, energy guides, manuals, spec sheets, tech sheets, and warranties for that category or model. • Do not touch any electrical switch; do not use any phone in your building. Super High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Exterior Tankless Water Heater Let’s find your ideal Rinnai tankless water heater system. We ship our parts to Canada, USA and to all parts of the world. Tankless gas water heaters can have several advantages over traditional tank-style gas water heaters. RE180eP. Dover, Ohio 44622. Expert Installation Available. 68. 6/5 stars from 61 reviews. Enjoy an endless supply of hot water with the SENSEI™ RSC160eN Super High Efficiency Plus condensing tankless water heater from Rinnai. V94XiN is the perfect combination of high efficiency, comfort and value in a natural gas tankless water heater from Rinnai. More Options Available. Rinnai tankless can last twice as long as tanks, making them a better investment as well as increasing the value of your home. com. Accessories. CU199eN is designed for exterior installation, natural gas fuel, is WiFi ready to. Tankless water heaters offer several benefits over traditional tank heaters. How to decode the Rinnai water heater serial number? Old serial number format. Expert Installation Available. Plus, with premium technology, increased energy efficiency, an improved Home Energy Rating System (HERS) Index Score and optimized LEED eligibility, our tankless solutions can increase your home's value. The flow rate of Rinnai water heaters is higher and ranges from 6. Rheem 13kw Tankless Electric Water Heater RTEX-13. SEE IT. That will cover all Rinnai water heaters back to '06. 5/5 stars from 191 reviews. Save 25% $3,920. Only complaint is waiting for the hot water in the kitchen, the furthest point in the house from the Rinnai. Rinnai RU160IN Sensei 9 GPM 160000 BTU 120 Volt Residential Natural Gas Tankless Water Heater for Indoor Installation. 1. Welcome to ultimate efficiency. Gain the ability to wirelessly control your heater, diagnose and maintain any problems, as well as view your usage statistics over time. Minimum water pressure is 50 psi. Welcome to ultimate efficiency. In fact, Rinnai Tankless Water Heaters use up to 40% less energy than a traditional tank water heater. We offer affordable concentric venting, including 2" by 4" diameter for condensing and 3" by 5" diameter for non-condensing. Rinnai products provide peace of mind with warranties that surpass the. Compare. Plus, diagnostic tools and remote monitoring from local Rinnai experts provide rapid service and peace of mind. Uniform Energy Factor (UEF): 0. Ideal for small to medium homes or remodels. Founded in 1920, Rinnai has. EST Monday through Friday and will be happy to assist you. Enjoy an endless supply of hot water with the SENSEI™ RU180eP Super High Efficiency Plus condensing tankless water heater from Rinnai. Welcome to ultimate efficiency. REP160eN is the perfect combination of high efficiency, comfort and value in a natural gas non-condensing tankless water heater from Rinnai. 1 selling brand of tankless gas water heaters in North America, announces it has manufactured its first unit in the United States, just eight months after it announced plans to start manufacturing domestically. Learn more at rinnai. Rinnai products provide peace of mind with warranties that. Since tankless water heaters only heat water as necessary, they eliminate standby energy losses, too. For most houses, a tankless water heater can be between 24% and 34% more energy-efficient than conventional tank-based devices, according to the US Department of Energy [1]. In fact, Rinnai Tankless Water Heaters use up to 40% less energy than a traditional tank water heater. The TRS can be ordered with Rinnai’s ommon Venting System, which consists of the Vent exhaust venting and PP or PV intake venting. With tankless, you’ll enjoy continuous hot water and space savings. In fact, Rinnai Tankless Water Heaters use up to 40% less energy than a traditional tank water heater. 8-GPM 199000-BTU Indoor Natural Gas Tankless Water Heater in the Water Heaters department at Lowe's. It may even qualify for rebates in your area for added savings. Commercial condensing tankless water heater CU199eN from Rinnai is precision engineered to provide endless hot water for the most demanding of applications such as restaurants, hospitality, education institutions, multifamily residential buildings and more. 61 $1182. Rinnai + Denommee Plumbing: Total Confidence. Tankless Water Heaters Give Your Clients the Best of the Best Built to commercial-grade standards, Rinnai tankless water heaters are individually tested, backed by the. Enjoy an endless supply of hot water with the RUCS75iN, our Super-High Efficiency condensing natural gas tankless water heater from Rinnail. Ecosmart ECO 27 Electric Tankless Water Heater, our Best Overall pick, is 35% off. This manual. Rated 5 out of 5 by GoodPurchase4534 from Tankless water heater The savings on the gas bill was immediate, 1/3 less the first month, even less the next month. In fact, Rinnai Tankless Water Heaters use up to 40% less energy than a traditional tank water heater. Power supply. There are two different styles of Rinnai water heater serial numbers. Rinnai has been selling tankless water heaters in North America since the 1990s. Stiebel Eltron DHC Trend Point-of-Use Electric Tankless Water Heater. water heater. Department of Energy (DOE) is proposing a new rule to raise efficiency standards for tankless gas-fired water heaters. Now, with Smart-Circ, Rinnai RSC model water heaters learn your water usage patterns to start circulating hot water on your schedule, anticipating your hot water needs for a shorter wait and saving energy during times when you don't. RE199iP is the perfect combination of high efficiency, comfort and value in a propane gas tankless water heater from Rinnai.