Compare different types of water heaters based on cost, energy use, fuel type and preference. See the top picks for electric, tankless and propane water heaters, with ratings, prices and features.Dec 1, 2023 ... This makes gas heaters a better choice than electric ones for larger homes with greater hot water demands. We aspire to be acknowledged as one of the most reliable sources of advice and guides on quality water systems and products. Usawaterquality intends to offer straightforward recommendations on energy-saving, cost-effective, mobilize, and modern components. We stand by our vision which implies becoming the place where you go to know more about ... Download the SF14 Low NOx gas fired water heater manual Flexiheat UK . We do five models – that are condensing water heaters, which must be fitted in commercial applications due to recent building regulation …The top-selling product within Gas Tank Water Heaters is the Rheem Performance 50 Gal. Tall 6 Year 38,000 BTU Ultra Low NOx (ULN) Natural Gas High Efficiency Tank Water Heater. Find Milwaukee Ratcheting Wrenches ready to be picked up today at your local Home Depot store.We uncover the best water heaters for 2021, including tall and short tank models, tankless electric and gas, and even heat pump models. Professional Tool Reviews for Pros By TradeFind the Water Heater to Fit Your Needs. There are several factors to consider when choosing a water heater – gas or electric, tank or tankless. Tank sizes range from 20- to 80-gallon capacities and depend on the building occupants or household size and amount of water usage at peak times. Regardless of which hot water heater …Turn on the Water Heater. Shut off the drain valve and disconnect the garden hose. Be sure all but one of the hot water taps in your home are closed (the one in the bathtub closest to the water heater is best). Now you can turn the water back on to the water heater. Re-energize the system slowly by partially opening the valve.The Facts: State: Zulia. Population: ~ 1,200,000. Metropolitan population: ~ 5,500,000. Districts: Venancio Pulgar, Idelfonso Vázquez, Coquivacoa, El Naranjal, San ...The gas water heaters are available for purchase. We have researched hundreds of brands and picked the top brands of gas water heaters, including TCFUNDY, GASLAND, Rinnai, Rheem, MIZUDO. The seller of top 1 product has received honest feedback from 349 consumers with an average …This gas tankless water heater has a wide flow rate range, meaning it can be used for homes with multiple bathrooms. Its flow rate varies from 0.26 right up to 9.8 GPM. What’s more, the Rinnai RUC98iN Ultra Series tankless water heater has an energy factor of 0.95 and can be used with natural gas or propane.9 Best Hot Water Heaters: (Gas & Electric Reviews) In 2022 Best Hot Water Heaters Reviewed Get reliable hot water in your home with these top-rated systems. We have reviewed 40 & 50 gallons options plus …The top-selling product within Gas Tank Water Heaters is the Rheem Performance 50 Gal. Tall 6 Year 38,000 BTU Natural Gas Tank Water Heater. Related Searches. propane water heater. 40 gallon water heater. water heater. gas hot water heater. short gas tank water heaters. power vent gas tank water heaters.Best compact gas tankless water heater – Gasland BE158 1.58GPM. 1. Rinnai RUC98iN (the best gas tankless water heater overall) Rinnai RUC98iN is an ideal gas tankless water heater if you have a large household and someone’s constantly using the bathroom and is in demand of simultaneous warm water.When it comes to choosing a water heater for your home, Rheem is a trusted brand that offers a wide range of options. One of the first decisions you’ll need to make is whether to g...Gas Water Heaters. Our most popular model with proven performance in millions of homes. Our exclusive Defender Safety System ® provides additional protection for safe installation in a basement, utility room or garage. Wide variety of sizes available to meet the needs of your household. Atmospheric Vent Gas Model Numbers: …Gas Water Heaters. Our most popular model with proven performance in millions of homes. Our exclusive Defender Safety System ® provides additional protection for safe installation in a basement, utility room or garage. Wide variety of sizes available to meet the needs of your household. Atmospheric Vent Gas Model Numbers: …Get free shipping on qualified Gas Tankless Water Heaters products or Buy Online Pick Up in Store today in the Plumbing Department. ... Best Seller. Expert Installation Available $ 1384. 11 $ 1785.42 Save $ 401.31 (22 %) (372) Rinnai. Super High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Interior Tankless Water Heater.Feb 22, 2024 · There are two basic types of tankless water heaters to consider: whole-house and point-of-use. Whole-house models, like the Rinnai V53DeN Tankless Hot Water Heater or Rheem Performance Self-Modulating 7.03 GPM Tankless Electric Water Heater, have flow rates substantial enough to support multiple fixtures simultaneously. 1. AFC Home Warranty. With excellent pricing and high customer satisfaction since 2010, AFC Home Warranty offers two water heater plan options (the Platinum Plan and the Gold Plan) plus an add-on ...Bosch WRD11B31 11 Litre Battery Ignition LPG Gas Water Heater. R 7,89800 incl. VATR 7,898.00 incl. VAT. R 6,86783 excl. VAT. Add to cart. Bosch 110mm x 600mm Gas Water Heater Flue. R 25600 incl. VATR 256.00 incl. VAT. R 22261 excl. VAT. Add to cart. Wall Bracket For 110mm and 130mm Flue. Selection of the best water heaters: Online top-sellers. Rinnai V Series. Rheem RTEX-18. American Standard POU. A.O. Smith GCR-40. Having reviewed many water heaters, we've found that it can be challenging to identify one particular brand or model that stands out from the wide range of available options on the market. The clearance space needed around a hot water heater is dependent upon whether the heater is a gas or electric model. Twenty-four inches of service clearance in front and two inche...When it comes to choosing the best gas water heater for your home, understanding the ratings is crucial. Gas water heater ratings provide valuable information about the efficiency ...Jan 19, 2022 · This gas tankless water heater has a wide flow rate range, meaning it can be used for homes with multiple bathrooms. Its flow rate varies from 0.26 right up to 9.8 GPM. What’s more, the Rinnai RUC98iN Ultra Series tankless water heater has an energy factor of 0.95 and can be used with natural gas or propane. The Rheem Performance Platinum 40 Gal. Natural Gas Short Water Heater comes with a 38,000 BTU/hour environmentally friendly Low NOx burner that provides ample hot water for households with 2 to 4 people. The push button ignition system ensures safe and easy startup. Its maintenance free combustion air intake system means there are no filters to ...Pros: Gas water heaters have higher heating capabilities than electric heaters, which means they can produce more hot water. They are ideal for larger families with substantial hot water needs throughout the day. They have faster recovery times and can provide hot water during power outages. With proper maintenance, gas heaters can …About. Gas Tanked is part of the Water Heaters test program at Consumer Reports. In our lab tests, Gas Water Heaters models like the Gas Tanked are rated on multiple criteria, such as those listed ...Richmond® Encore® High Efficiency Tankless Water Heater delivers continuous hot water. With the high demand for hot water from back-to-back showers, laundry, dishes, and …Some gas and electric tankless water heaters can deliver enough hot water for an entire household. Whole-home gas tankless water heaters typically range in sizes from 140,000 BTU to around 199,000 BTU; choose the appliance capability based on the amount of hot water you need for a home or business. …Best Portable Hot Water Heaters: Quick List. Camplux Propane Gas Outdoor Portable Tankless Water Heater. Bosch Electric Mini-Tank Water Heater. Ecosmart ECO MINI 120V Electric Mini Tank Water Heater. Mr. Heater Basecamp Battery Operated Portable Water Heater and Shower System.Best Tankless Gas Water Heater Reviews – (Top-Picks) 1. Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater. The first product on our list is the Rinnai RUC98iN, which comes with a rating of 4.5 stars. Reportedly, it is a new model from this manufacturer, capable of delivering more efficiency to its users.Get free shipping on qualified Tankless Water Heaters products or Buy Online Pick Up in Store today in the Plumbing Department. ... Super High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Interior Tankless Water Heater. ... Compare. Best Seller. More Options Available. Expert Installation Available $ 559. 00. Buy … Gas Water Heaters. Our most popular model with proven performance in millions of homes. Our exclusive Defender Safety System ® provides additional protection for safe installation in a basement, utility room or garage. Wide variety of sizes available to meet the needs of your household. Atmospheric Vent Gas Model Numbers: RG130T6N. RG230T6N. Lowboy water heater sizes can vary between 30 and 49 inches in height and hold up to 50 gallons of water. Tall Water Heater Space Requirements Gas and electric tall water heaters have size ranges from 50 to 76 inches tall and can hold up to 100 gallons of water. They’re ideal for basements or garages …This heater is about the size of a loaf of bread, and it weighs only about 3 pounds, so you can stash it pretty much anywhere. Plus, the Lasko 754200 is incredibly cheap. The Lasko 754200 tends to ...All water heaters heat water - how good they are depends upon the maintenance that you provide. State is a good brand, nothing wrong with them. If your current ...Solar water heaters could help cut your utility bills. Visit HowStuffWorks to learn about solar water heaters. Advertisement Heating up water accounts for a good chunk of a home's ...When it comes to finding the perfect water heater for your home, gas-powered models have long been a popular choice. They offer efficient heating capabilities, faster recovery time...Stiebel Eltron DHC Trend Point-of-Use Electric Tankless Water Heater. Rheem 18kw Tankless Electric Water Heater. Rheem 13kw Tankless Electric Water Heater RTEX-13. Eemax 27kW ELECTRIC TANKLESS ...This is the first propane gas tankless water heater on this list, and much like the Rheem RTGH-95DVLN above, this one is a safe and effective choice for an entire house, with its high 9.5 GPM flow rate and thorough safety features. It is a condensing unit, low-NOx, and Energy Star-certified—with a 0.94 energy factor.About. Gas Tanked is part of the Water Heaters test program at Consumer Reports. In our lab tests, Gas Water Heaters models like the Gas Tanked are rated on multiple criteria, such as those listed ...The absolute lowest you should set your water heater is 120°F. This is because Legionella bacteria thrive at 77°F-113°F. It's worth noting that 120°F is not hot enough to kill Legionella bacteria. It merely stops the growth so that any bacteria that may have come in with the freshwater supply won't multiply to dangerous levels.Rinnai Corporation makes gas water heaters, home heating appliances and accessories to use with them, according to the Rinnai website. You can use the Document Library on the Rinna...Today we proudly employ over 2,000 people at our American facilities. You can always count on the performance and reliability of our Built to be the Best ® products. Bradford White designs, engineers & builds water heating, space heating, combination heating and storage solutions for residential, commercial, & industrial applications.Rating: Noritz is a Japanese company that makes HVAC devices. Their best gas tankless water heater is the 39 lbs NRC66DVNG model. This is the most compact and lightweight tankless gas model on the list. It comes with two specifics; it’s an indoor-only unit and has a condenser, which boosts the energy efficiency.For homes that use 41 gallons or less of hot water daily, demand water heaters can be 24%–34% more energy efficient than conventional storage tank water heaters. They can be 8%–14% more energy efficient for homes that use a lot of hot water -- around 86 gallons per day. In some cases you may be able to achieve even greater energy savings if ...Condensing gas water heater pros: A condensing gas heater is the most energy-efficient, gas-fired tank-style water heater on the market. “First-hour” recovery rate is incredible—you’ll never run out of hot water. Condensing gas water heater cons: A condensing heater costs $2,000.Bosch WRD11B31 11 Litre Battery Ignition LPG Gas Water Heater. R 7,89800 incl. VATR 7,898.00 incl. VAT. R 6,86783 excl. VAT. Add to cart. Bosch 110mm x 600mm Gas Water Heater Flue. R 25600 incl. VATR 256.00 incl. VAT. R 22261 excl. VAT. Add to cart. Wall Bracket For 110mm and 130mm Flue. A.O. SmithSignature 100 40-Gallon Tall 9-year Warranty 40000-BTU Natural Gas Water Heater. 398. • Delivers the ideal amount of hot water for households with 3 to 4 people when sized appropriately. • Features an environmentally-friendly 40,000 BTU gas burner that delivers 80 gallons in the first hour. Types: Rinnai has two styles of tankless water heaters: Ultra series and Luxury/Value series. The Ultra series is available in five sizes ranging from 130,000-199,000 BTUs. The Luxury/Value series ... Gas Water Heaters. Our most popular model with proven performance in millions of homes. Our exclusive Defender Safety System ® provides additional protection for safe installation in a basement, utility room or garage. Wide variety of sizes available to meet the needs of your household. Atmospheric Vent Gas Model Numbers: RG130T6N. RG230T6N. Set The Temperature to 120° F. As we have seen above, unless you experience chronic respiratory problems or have suppressed immune systems, 50° C or 120° F is warm enough. You don’t have to set your water heater’s thermostat any higher. Setting your temperature at 120° F will help you save energy.The A.O. Smith 50-gallon Voltex model is a bit more efficient than the Rheem 50-gallon model, however, and has much of the same functionality while being a little taller and a tad narrower. The 50-gallon Rheem ProTerra heat pump water heater measures 62 inches tall and has a diameter of 22.25 inches.50 gal. Tall 50 MBH Residential Natural Gas Water Heater. Mfr. Part #100114771. (0) $1482.94. EACH. Add to Cart. Pick Up: 0 in Youngsville, NC Available Nearby.Typically, A.O. Smith’s gas-powered water heaters are cheaper to operate than electric models but can cost more upfront, with installation and ventilation costs. A.O. Smith’s electric water heater units have a UEF (Uniform Energy Factor) rating between.89 and 3.45, making them highly efficient in saving you money on your monthly bills.2. Rinnai RL94EP RRL94eP Large-Propane. Check Price on Amazon. If you are still searching for the best tankless gas water heater, I guess you just found it. Rinnai RL94EP is a great gas water ...The second gas water heater from Rheem on this list offers excellent all-around performance and peak efficiency. It has enough storage capacity to provide plenty of hot water, ample for up to 5 people. With its powerful 40,000 BTU gas burner, it can deliver 93 gallons of hot water in the first hour.With a bucket under the overflow drain pipe, test the pressure relief valve. Lift the relief valve handle and close it again. Use caution — the water will be hot and opening the valve with too much force can damage it. Opening the valve should release a burst of water into the overflow drain pipe.Best Gas Tankless Heater: Rinnai Gas Tankless Hot Water Heater Best Point-of-Use Heater: Bosch Electric Mini-Tank Water Heater Best Electric Tankless Heater: EcoSmart …A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 35500-BTU Natural Gas Water Heater. Install this A. O. Smith Signature 100 Series atmospheric vent 40-gallon natural gas water heater …Rheem Gladiator 50-gallon Water Heater: Design & features. This is an easy to use gas water heater since it has no filter to clean. For safety's sake, it incorporates an air fuel shut-off capability, and its sensors also will turn the heater off if any potentially flammable vapor starts building up. The vent system and hood keep the area where ...Explore A. O. Smith's line of gas and electric water heaters. Find residential and commercial tankless models, hybrid heat pumps and storage tanks. Explore A. O. Smith's line of gas and electric water heaters. Up to $3,000 in Incentives for Hybrid Heat Pump may be available in your area! ... Best-In-Class Support.Dec 10, 2020 · My top pick for the overall best water heater goes to the Rheem Performance Plus 50 Gallon Natural Gas Tall Water Heater. This is one of the best-rated 50-gallon hot water heaters on the market - and for good reason! The high first hour rating of 77 is plenty enough for even the biggest households. Short 6-Year 30,000 BTU Natural Gas Tank Water Heater. Add to Cart. Compare. Exclusive. Expert Installation Available $ 899. 00 (94) ... Shop Best Rated Bath Assembled Kitchen Cabinets; Shop Top Rack Dishwasher Safe JoyJolt Highball Glasses; Shop 4 piece Cutlery; In-Stock Abstract Laminate Sheets;A.0. smith XCG-50 Promax water heater. XCG-50 ProMax is another water heater that is considered among the best 50 gallons water heaters in the market. Here is the real deal if you want a water heater made of non-corrosive and rust-resistant material.Rheem Performance Platinum Atmospheric 50 Gallon Natural Gas Water Heater — 8.5/10 (Best natural gas tank water heater) The most popular form of water heater is a storage tank. Tank water heaters are made up of an insulated tank in which water is heated and kept until it is needed, at which point it is released through a pipe on …The best tankless gas water heater is the Rinnai RUC98iN Ultra Series. This model hooks up to the natural gas supply in your home and uses two heat exchangers to provide hot water to your entire home at an unprecedented rate …Best Overall: Stiebel Eltron Electric Tankless Water Heater. Best Whole-House: Rinnai Indoor Gas Tankless Hot Water Heater. Best Propane-Powered: Rinnai Outdoor Gas Tankless …Best Commercial – Gas · Buying Options · Rheem – Commercial Universal Heavy Duty 100 Gallon 199,900 BTU Ultra Low NOx (ULN) Natural Gas Tank Water Heater.Jul 6, 2020 ... I've spent a few hours reading reviews of tanked gas water heaters and I have narrowed my choices down to a Bradford White (from a plumbing ...Stiebel Eltron DHC Trend Point-of-Use Electric Tankless Water Heater. Rheem 18kw Tankless Electric Water Heater. Rheem 13kw Tankless Electric Water Heater RTEX-13. Eemax 27kW ELECTRIC TANKLESS ...Best RV Tankless Water Heater Options For Every Budget Top of the Budget Option: Truma. ... Furrion® RV Tankless Gas 60,000 BTU Water Heater. 387 Reviews. Furrion® RV Tankless Gas 60,000 BTU Water Heater - 16.14" x 16.14" White Door - 2.4 GPM – Vortex Technology steadies temperatures – Propane Gas-Powered …Set The Temperature to 120° F. As we have seen above, unless you experience chronic respiratory problems or have suppressed immune systems, 50° C or 120° F is warm enough. You don’t have to set your water heater’s thermostat any higher. Setting your temperature at 120° F will help you save energy.Bosch WRD11B31 11 Litre Battery Ignition LPG Gas Water Heater. R 7,89800 incl. VATR 7,898.00 incl. VAT. R 6,86783 excl. VAT. Add to cart. Bosch 110mm x 600mm Gas Water Heater Flue. R 25600 incl. VATR 256.00 incl. VAT. R 22261 excl. VAT. Add to cart. Wall Bracket For 110mm and 130mm Flue.When your household water heater fails, it can be a disaster. No hot water can mean no washing up, no showering and sometimes no heating either. So it pays to do your research as t...Dec 8, 2022 ... Way cheaper to install ( no gas line, no chimney, no make up air ). Way more efficient 200-300% more efficient than the best gas hot water tank ...Today we proudly employ over 2,000 people at our American facilities. You can always count on the performance and reliability of our Built to be the Best ® products. Bradford White designs, engineers & builds water heating, space heating, combination heating and storage solutions for residential, commercial, & industrial applications.Rating: Noritz is a Japanese company that makes HVAC devices. Their best gas tankless water heater is the 39 lbs NRC66DVNG model. This is the most compact and lightweight tankless gas model on the list. It comes with two specifics; it’s an indoor-only unit and has a condenser, which boosts the energy efficiency.Get free shipping on qualified Tankless Water Heaters products or Buy Online Pick Up in Store today in the Plumbing Department. ... Super High Efficiency Plus 11 GPM Residential 199,000 BTU Natural Gas Interior Tankless Water Heater. ... Compare. Best Seller. More Options Available. Expert Installation Available $ 559. 00. Buy …The second gas water heater from Rheem on this list offers excellent all-around performance and peak efficiency. It has enough storage capacity to provide plenty of hot water, ample for up to 5 people. With its powerful 40,000 BTU gas burner, it can deliver 93 gallons of hot water in the first hour.This Rheem Performance Platinum may possibly be the best 50-gallon gas water heater for medium-sized households. Beginning with a 40,000 BTU/hour, low NOx burner, this heater provides ample water at a lower cost than older models. The savings continue with a maintenance-free combustion air intake system and self …The second gas water heater from Rheem on this list offers excellent all-around performance and peak efficiency. It has enough storage capacity to provide plenty of hot water, ample for up to 5 people. With its powerful 40,000 BTU gas burner, it can deliver 93 gallons of hot water in the first hour.Since hot water is one of the best creature comforts of the modern era, it’s important to choose a water tank from one of the best water heater brands. Water heaters …Lowboy water heater sizes can vary between 30 and 49 inches in height and hold up to 50 gallons of water. Tall Water Heater Space Requirements Gas and electric tall water heaters have size ranges from 50 to 76 inches tall and can hold up to 100 gallons of water. They’re ideal for basements or garages …Pentair MasterTemp Compact Propane Gas Heater for Small Pools. Pentair EC462025 MasterTemp 125,000 BTU Compact Energy Efficient Pool Heater. MasterTemp pool heaters are designed for small to medium-sized pools and spas. The EC462025 has a compact design with 82-percent efficiency as compared to larger pool heaters.ENERGY STAR CertifiedWater Heaters. Water heaters that earn the ENERGY STAR come with gas, solar or electric heat pump technology. They heat your water just like standard models but with much less energy, saving you up to $3500 over a …A.0. smith XCG-50 Promax water heater. XCG-50 ProMax is another water heater that is considered among the best 50 gallons water heaters in the market. Here is the real deal if you want a water heater made of non-corrosive and rust-resistant material. The NRC66 is a more economical option than the EZ series but still provides endless hot water and has the highest flow rate in its category. Features of this tankless natural gas water heater include an advanced heat exchanger design and built-in controller. With a flow rate of up to 6.5 gallons per minute, the NRC66 provides high efficiency ... New boilers must have an AFUE rating of at last 80 percent, and high-efficiency models are 90 to 98.5 percent efficient. The higher the rating, the higher the equipment cost, but the lower the ...The best-rated product in Gas Tank Water Heaters is the Performance 40 Gal. Tall 6 Year 36,000 BTU Liquid Propane Tank Water Heater. What are the shipping options for Gas Tank Water Heaters? Some Gas Tank Water Heaters can be shipped to you at home, while others can be picked up in store.About. Gas Tanked is part of the Water Heaters test program at Consumer Reports. In our lab tests, Gas Water Heaters models like the Gas Tanked are rated on multiple criteria, such as those listed ...
Current Specification Effective Date: April 16, 2015. The specification covers high-efficiency gas storage, whole-home gas tankless, solar, and high efficiency electric storage water heaters. Products must meet minimum requirements for energy efficiency, hot water delivery, warranty period, and safety. Water Heater Key …. Adobe sign vs docusign
Best Portable Hot Water Heaters: Quick List. Camplux Propane Gas Outdoor Portable Tankless Water Heater. Bosch Electric Mini-Tank Water Heater. Ecosmart ECO MINI 120V Electric Mini Tank Water Heater. Mr. Heater Basecamp Battery Operated Portable Water Heater and Shower System. The NRC66 is a more economical option than the EZ series but still provides endless hot water and has the highest flow rate in its category. Features of this tankless natural gas water heater include an advanced heat exchanger design and built-in controller. With a flow rate of up to 6.5 gallons per minute, the NRC66 provides high efficiency ... Tankless water heaters can range in price from $600 to $1,500. A tankless water heater installation costs between $1,000 and $3,500. Gas. Gas water heaters rely on natural gas or propane to heat ...Feb 28, 2024 · 1. AFC Home Warranty. With excellent pricing and high customer satisfaction since 2010, AFC Home Warranty offers two water heater plan options (the Platinum Plan and the Gold Plan) plus an add-on ... So, while you are not burning gas at the home, the coal or gas used to produce your electricity has produced a significant amount of greenhouse gas. Currently, solar water heaters are the best option for those that are environmentally conscious. However, solar water heaters will still produce some carbon emissions in most …Nov 28, 2019 · Condensing gas water heater pros: A condensing gas heater is the most energy-efficient, gas-fired tank-style water heater on the market. “First-hour” recovery rate is incredible—you’ll never run out of hot water. Condensing gas water heater cons: A condensing heater costs $2,000. In that scenario, the $2,000 credit for the heat pump could be combined with tax credits up to $600 total for the windows/skylights plus $500 for two or more doors. If you replace your water heater the following year, you would be eligible for another 30% tax credit, up to $2,000 plus up to $600 if you need an electric panel upgrade to ...In this article, we will be looking at the top 5 best 50-gallon gas water heaters. This is a comprehensive review containing pros and cons as well as other comparisons to help you make the right decision. 1. A.O. Smith XCR-50 ProMax Plus – High-Efficiency Natural Gas Water Heater. CHECK PRICE. The A.0 Smith XCR-50 …Selection Criteria. When selecting a replacement water heater for your home, consider the following: Fuel type, availability and cost. The fuel type or energy source you use for water heating will not only affect the water heater's annual operation costs but also its size and energy efficiency. See below for more on selecting fuel …Jan 19, 2022 · This gas tankless water heater has a wide flow rate range, meaning it can be used for homes with multiple bathrooms. Its flow rate varies from 0.26 right up to 9.8 GPM. What’s more, the Rinnai RUC98iN Ultra Series tankless water heater has an energy factor of 0.95 and can be used with natural gas or propane. 1. Best Energy Efficient Water Heater—Rinnai RU199iN Condensing Tankless Hot Water Heater The Rinnai condensing tankless gas water heater provides non-stop hot water ….