Hybrid electric water heater - 120V, 208V and 240V electric hot water heaters in capacities from 2 to 80 gallons. Available in full size, compact, mini-tank, solar booster, heat-pump and ...

 
The smartest, quietest and most efficient hybrid water heater on earth features a heat pump design making it 4x more efficient than standard electric water heaters. Smart Rheem 65 Gallon Hybrid Electric Water Heaters feature integrated Wi-Fi connectivity for important mobile alerts. Plus, it's a great value with a 10-year warranty and 1-year in-home labour …. Kalispell food

The smartest, quietest and most efficient hybrid water heater on earth features a heat pump design making it 4x more efficient than standard electric water heaters. Smart Rheem 65 Gallon Hybrid Electric Water Heaters feature integrated Wi-Fi connectivity for important mobile alerts, like Water Leak Detection for potential added savings. Plus, it's a great …Get the Rheem Performance 2.15 GPM Tankless Electric Water Heater at The Home Depot for $299.00. The Rheem Performance Hybrid High-Efficiency Smart Tank Electric Water Heater features built-in ...Jan 11, 2024 · Learn what hybrid electric water heaters are, how they work, and how to choose the best one for your home. Compare different types, costs, benefits, and drawbacks of this energy-efficient and versatile option. See the top 5 picks for 2024 based on efficiency, value, and features. Jan 27, 2023 · How We Test Water Heaters. Consumer Reports recently tested several electric and gas whole-house tankless water heaters from brands such as Bosch, Navien, Noritz, Rheem, Rinnai, Tempra, and ... BEST OVERALL: Stiebel Eltron Tempra 36 Trend Tankless Water Heater. RUNNER-UP: EcoSmart ECOS 27 Electric Tankless Water Heater. BEST BANG FOR THE BUCK: Thermomate 18kW Tankless Electric Water ...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.A hybrid water heater is a heat pump water heater that collects heat from the outside environment and raises the water …ProLine® 40-Gallon Short Electric Water Heater Model ENS-40. 4,500-watt elements. 55-gallon first hour rating. 6-Year Warranty. Compare. View Model. ProLine XE® Voltex® AL 66-Gallon Smart Hybrid Electric Heat Pump Water Heater Model HPTS-66. 3.9. (21)Price. ₱195,000.00. How It Works. Absorbs ambient heat from the surrounding air to heat water using a compressor and “Environmentally-Friendly” R134a refrigerant. The self-contained heat pump unit is integrated into the top of the tank. Multiple operating modes to maximize efficiency and performance.From an electric water heater, to a tankless water heater, to a hybrid hot water heater, and more, there are many options out there. But it’s a decision that could save you—or cost you—thousands of dollars down the line. In fact, switching to a hybrid water heater can save you as much as $4,800 over the next 10 years. Quietest Hybrid Electric Heat Pump on the market at 45 DBA Ideal hot water delivery for households with 3-4 people when sized appropriately Two back-up 4,500-watt copper heating elements provide a first hour delivery of 65 gallons Best Hybrid Water Heater For a Big Family: A.O. Smith FPTU-80. "An Energy Star qualified 80-gallon water heater with a digital display that reduces water …Rheem Manufacturing ranks as the global leader in the manufacture of high-quality, sustainable, and innovative water heaters, tankless water heaters, air conditioners, furnaces, pool heaters, and HVAC systems for residential and commercial applications, and is a full member of AHRI, the Air-Conditioning, Heating, & Refrigeration Institute. * All …Learn how to find the best hybrid heat pump water heater for your home and save money on energy bills. Find out the pros and cons, costs, rebates, and tips of installing a heat …Replacing an old water heater can help ensure that you always have enough hot water in your home, and it might also save you money on your income taxes. The Internal Revenue Servic...Oklahoma here - We changed our ~10yr old gas water heater for a Rheem electric heat pump hybrid in 2020 and moved it from an interior closet to the garage (though it is actually pretty quiet, we just needed the room inside the house). Definitely would do it again. And there’s actually more tax credit for it now than there was then.Yes, today’s heat pump water heaters work efficiently - even in cold climates. Heat pump water heaters (or “electric hybrid” water heaters) operate best in spaces where surrounding air temperature remains at or above 40°F. Hybrid models will continue to make hot water even if surrounding air temperature dips below 40°F.Reasonable efficiency and high-tech features make the Rheem Hybrid Smart Tank Water Heater an attractive choice for those looking to save on energy costs. From my personal experience, the five settings—energy saver, heat pump, high-demand, electric, and vacation—allow for precise control based on your needs.Oct 24, 2023 · Any time you use hot water, cold water will flow into the bottom of the tank and the water heater will turn on and start heating. The water heater will also need to run on occasion to reheat the water in the tank, so it always stays at the correct temperature. When heating, a hybrid water heater starts moving refrigerant throughout the unit. Water heaters raise the temperature of water for use in bathing, cooking, irrigation, industry and other hot-water applications. Here’s how the three basic types of water heaters w...Hybrid water heaters move heat that already exists from one place to another, instead of generating heat directly. This allows hybrid water heaters to be at least three times more energy efficient than other types of water heaters. Compared to traditional units, a hybrid water heater can save you up to $3,000 over 10 years in energy costs.Heat pump water heaters are essentially a combination of a tank type electric water heater, a fan, an evaporator, and a compressor. You can think of these hybrid heat pump water heaters like hybrid cars: they have two controllable energy source that work to supplement one another. The main source of energy is hybrid, while the …First, check the water heater's circuit breaker in the service panel to make sure it hasn't tripped. If the breaker has tripped off, rock it to the OFF position, and then back to ON. If the heater's breaker did not trip off, reset the high-temperature limit on the heater. To do so, turn off the power to the water heater in the service panel.The Rheem ProTerra Electric hybrid is the smartest, most efficient water heater on the market. Heat pump technology makes it 3X MORE EFFICIENT than a new conventional electric model (of the same capacity).The ProLine® 120V Plug-In Hybrid Electric heat pump water heater from American Water Heaters makes it easier than ever for consumers to electrify to an energy-efficient option to save money on their utility bills.A. O. Smith's Signature® 900 Series 66 Gallon tall high efficiency hybrid electric heat pump Water Heater is designed to provide efficient and reliable hot water for households with 3 to 4 people when sized appropriately. A. O. Smith Signature® 900 heat pump water heaters can save you up to 76% or 330 dollars per year in energy costs compared to a standard …Dec 21, 2021 · Best Budget Option. Rheem Professional Prestige PROPH50 T2 RH350 D. Best for the Money. Delivers hot water quickly. Features connections that are easy to access. View Latest Price →. Stiebel Eltron Accelera 300. Best 80-Gallon Hybrid Water Heater. Has an 80 gallon storage capacity. Hybrid Electric Water Heater is easy to sell, install and service. It’s the most efficient water heater available, offering free cooling as a side benefit of wherever it is installed, making it easy for your customers to save money. It's also the quietestSignature® 900 - 120V Plug-In Hybrid Electric Heat Pump 80-Gallon Water Heater - 10 Year Warranty. compare. Page 1 of 1. Heating water has never been more efficient with a hybrid electric heat pump tank water heater from the A. O. Smith Signature Series®. Discover the cost savings for yourself. Upgrade your home's hot water system with this Rheem ProTerra 80 Gal. 10-Year Hybrid High Efficiency Smart Tank Electric Water Heater. This energy-efficient appliance provides an estimated energy cost savings of $490 per year. A.O. SmithSignature 900 50-Gallon Tall 10-Year Warranty 240-Volt Smart Hybrid Heat Pump Water Heater with Leak Detection & Automatic Shut-Off. 141. Multiple Options Available. • ENERGY STAR® certified 50-gallon hybrid electric water heater offers up to $385 per year in energy savings.*. • Eligible for $2,000 Federal Tax Credit, additional ...Live Sustainably. ProTerra Hybrid pulls heat from the air around it to heat water, reducing energy consumption. Uses up to 75% less energy than a standard electric water heater to help minimize your impact on the environment. View weekly, monthly and yearly energy usage reports from any mobile device to help better manage energy consumption.May 21, 2023 · High Upfront Cost. One of the main drawbacks of hybrid water heaters is their high upfront cost. These heaters are often more expensive than traditional gas or electric models. For instance, the Rheem Performance XE40M06ST45U1 costs around $439.00, while the Performance XG40T06EC36U1 is priced at $539.001. Oklahoma here - We changed our ~10yr old gas water heater for a Rheem electric heat pump hybrid in 2020 and moved it from an interior closet to the garage (though it is actually pretty quiet, we just needed the room inside the house). Definitely would do it again. And there’s actually more tax credit for it now than there was then.Cost of Heat Pump Water Heaters. One of the biggest issues with heat pump water heaters (sometimes called hybrid water heaters) is the upfront cost. A standard 50-gallon hot water heater can cost ... The Voltex AL Smart Hybrid Electric heat pump water heater from A. O. Smith is the most cost-effective, energy-efficient option available for consumers who want to save money on their utility bills. Voltex AL combines annual savings up to $600 per year* on utility bills with new leak protection features to support homeowner peace of mind like ... Oil and electric water heaters are two common types of water heater, and each has its pros and cons.If you’re installing a water heater in a home or office, you should know what these are, as then you’ll be able to make a wise purchase.In this article, oil water heaters will be compared to electric water heaters, and gas water heaters, which are …While conventional electric hot water heaters have an expected lifespan of 8 to 12 years, hybrid heat pump hot water heaters have an expected service life of 13 to 15 years. Eco-friendly : Unlike gas heaters, a hybrid heat pump hot water heater burns no fossil fuels and emits no harmful gases (so it doesn’t need venting to the outdoors), and it is much more …Get the Rheem Performance 2.15 GPM Tankless Electric Water Heater at The Home Depot for $299.00. The Rheem Performance Hybrid High-Efficiency Smart Tank Electric Water Heater features built-in ...Electrical Consumption Heat Pump. 550 Watts. Energy Factor (hybrid mode) 3.1199998855591. First Hour Rate (FHR) 94 Gallons. Operating Air Temperature Range. Heat Pump 35° F to 120° F (Unit operates in Standard/Electric Mode outside of this range) Operating Water Pressure.Heat pump water heaters are also commonly referred to as Hybrid Electric water Heaters. Different name - same ultra-efficient performance! Just look for the ENERGY STAR label. …Rheem® ProTerra™ Hybrid Electric Heat Pump Water Heater. 40, 50, 65 and 80-Gallon Capacities. 208-240 Volt / 1 PH Electric. Up to 4.0 UEF reduces operating cost. ENERGY STAR® rated. Delivers hot water faster than most standard electric water heaters. Ambient operating range: 37-145° F. Easy Installation.The GreenTronic 7000 T Hybrid Electric Water Heater is an electric storage water heater designed to meet all the household’s hot water needs, the company says. …Best Hybrid Water Heaters of 2022 – Complete Buyer’s Guide - HVAC Training 101. Bob Wells | Last Updated: December 21, 2021. A water heater is one of the most essential items in any given …This how-to video discusses how heat pump water heaters need a certain amount of air to operate most efficiently. We’ll explain not only why that is, but we’...ProTerra 40 Gal. 10-Year Hybrid High Efficiency Smart Tank Electric Water Heater with Leak Detection & Auto Shutoff. Add to Cart. Compare. Expert Installation Available $ 1978. 00 (20) ... hybrid electric water heater. water heater. hybrid hot water heater. 120 volt heat pump water heaters. Explore More on homedepot.com. Find out how much you can save on energy costs when you purchase your Rheem Hybrid Electric Water Heater. Added smart features like exclusive Water Leak Detection Alerts and vacation setting, plus energy cost savings and our 10-year warranty all add up for a quick payback in less than two years 11 and big savings over the life of the water heater. We are glad to hear that you are enjoying your new Rheem Hybrid Water Heater! If you ever need assistance or just have questions about your water heater, feel free to reach out to our Technical Support Team at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST and one of our experienced analysts will be happy to assist you. That's $3,760 in savings over a 10-year period (based on DOE test procedures and comparison of a 2015 standard electric tank water heater using 4,647 kWh per year vs. the GeoSpring hybrid Provides the same amount of hot water as a traditional 50-gallon standard electric water heater with 65 gallons first-hour delivery.Rheem® ProTerra™ Hybrid Electric Heat Pump Water Heater. 40, 50, 65 and 80-Gallon Capacities. 208-240 Volt / 1 PH Electric. Up to 4.0 UEF reduces operating cost. ENERGY STAR® rated. Delivers hot water faster than most standard electric water heaters. Ambient operating range: 37-145° F. Easy Installation.According to NR Can, a hybrid electric water heater is up to four times more efficient and uses up to 70 per cent less energy, on average, than a standard electric water heater. Additionally, electric water heaters led the overall water heater market and accounted for 51.3 per cent of the revenue share in 2022, according to a report done by ... Yes, today’s heat pump water heaters work efficiently - even in cold climates. Heat pump water heaters (or “electric hybrid” water heaters) operate best in spaces where surrounding air temperature remains at or above 40°F. Hybrid models will continue to make hot water even if surrounding air temperature dips below 40°F. Sep 13, 2021 · A.O. Smith Voltexⓒ FPTU-50 Hybrid Electric Water Heater. It’s fair to say that hybrid water heater reviews would be incomplete without looking at a unit from AO Smith, the largest manufacturer, and marketer of the electric heat pump water heater in North America today. The unit comes with an impressive energy factor rating of 2.78. Model # HPSX-50-DHPT. The Premier® AL combines annual savings up to $600 per year* on utility bills with new anti-leak features for added peace of mind. It offers premium features including iCOMM™ Smart Connectivity, a user-friendly display, vacation mode to save money while you are away, and a heavy duty smart anode that adapts to local ... ... hybrid electric heat pump Water Heater is designed to provide efficient and reliable hot water. ... Electric Water Heater with Hybrid Heat Pump. Item #816193 ...Oct 14, 2021 · 2. GE Hybrid Electric Water Heater. Our runner-up model is from GE and offers a list of similar features to the Rheem model, but at a more affordable price. Of course, you will lose some of the efficiency and overall control, but it is still a solid machine that heats the water in your home well. The Voltex AL Smart Hybrid Electric heat pump water heater from A. O. Smith is the most cost-effective, energy-efficient option available for consumers who want to save money on their utility bills. Voltex AL combines annual savings of almost $600 per year* on utility bills with new leak protection features to support homeowner peace of mind ... This hybrid electric heat pump water heater can save you up to 77% in annual energy costs versus a comparable standard electric water heater--that's $601 per year, or $6,010 over 10 years, in potential energy savings!* Get up to $2,000 back on your 2023 federal tax return when you purchase an energy efficient heat pump water heater this year.Aug 28, 2018 ... Introducing the Richmond Encore Seriesw Hybrid Electric Water Heater, the smartest, quietest, most efficient water heater on the market.Subsidy cuts are coming even though just 1.7% of cars in the UK are electric or plug-in hybrid—compared to nearly 40% in Norway. The UK government announced a plan yesterday (Oct. ...Nov 26, 2022 ... My household consists of two persons with low hot water usage. The heat pump alone is sufficient for our needs. It doesn't have any trouble ...Stiebel, Rheem and EcoSmart are among the best electric tankless water heater brands of 2024. Save energy and costs by comparing our top 5 picks.120V, 208V and 240V electric hot water heaters in capacities from 2 to 80 gallons. Available in full size, compact, mini-tank, solar booster, heat-pump and ...The smartest, quietest and most efficient hybrid water heater on earth features a heat pump design making it 4x more efficient than standard electric water heaters. Smart Rheem 50 Gallon Hybrid Electric Water Heaters feature integrated Wi-Fi connectivity for important mobile alerts, like Water Leak Detection for potential added savings. Plus, it's a great value with a 10-year …Model # HPSX-50-DHPT. The Premier® AL combines annual savings up to $600 per year* on utility bills with new anti-leak features for added peace of mind. It offers premium features including iCOMM™ Smart Connectivity, a user-friendly display, vacation mode to save money while you are away, and a heavy duty smart anode that adapts to local ... GreenTronic 7000 T Hybrid Electric Water Heater. Efficient heat pump technology integrated into an electric storage water heater. 3-4 times more efficient than a traditional water heater. Available as 50 Gallon and 80 Gallon. Perfect replacement for electric storage water heaters. Eligible for 25C tax credit, saving up to $2,000 on installation ... The water heater that you have reviewed includes a 6-year parts and tank warranty, as well as a 1-year labor warranty. Any cosmetic damage will not hinder the warranty but if the damage is a hinder to the proper operation of the water heater, please call our Technical Support team at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST. Heat Pump Water Heaters. We were proud to introduce the first 240V Hybrid Electric Heat Pump water heater to the market in 2009, but we didn’t stop there. We have continued to innovate in the category, adding a touch screen control, developing a 120V Plug-in Heat Pump for easy gas replacement, and finding new ways to save you money. Rheem ... Model # HPSX-66-DHPT. The Premier® AL combines annual savings up to $600 per year* on utility bills with new anti-leak features for added peace of mind. It offers premium features including iCOMM™ Smart Connectivity, a user-friendly display, vacation mode to save money while you are away, and a heavy duty smart anode that adapts to local ...Some whole-house electric tankless water heaters use as many as four 240-volt 40-amp breakers. What Size Breaker for Water Heater Explained. The key to getting the right size breaker for water heaters is understanding how the heater works. Electric water heaters use anything between 220 to 240 volts of alternating current flow.HPS10266H045DV - ProLine® XE AL Smart 66 Gallon Residential Hybrid Electric Heat Pump Water Heater - 10 Year Warranty VIEW PRODUCT. HPS10250H045DV - ProLine® XE AL Smart 50 Gallon Residential Hybrid Electric Heat Pump Water Heater - 10 Year Warranty VIEW PRODUCT. HPV10280H009DV - ProLine® XE 120V Plug-In Hybrid Electric Heat Pump 80 …The ProTerra Hybrid Electric pulls heat energy from the air around it to heat your water, making it the most efficient water heater on the market 4 with up to a 4.07 UEF Carbon Footprint Reduction The ProTerra Hybrid Electric uses 75% less energy 5 than a standard electric water heater to help minimize your impact on the environment—that’s up to 4X the efficiency of a …A. O. Smith's Signature® 900 Series 80 Gallon tall high efficiency hybrid electric heat pump Water Heater is designed to provide efficient and reliable hot water for households with 3 to 4 people when sized appropriately. A. O. Smith Signature® 900 heat pump water heaters can save you up to 76% or 330 dollars per year in energy costs compared to a standard …AO Smith Voltex Hybrid Electric Water Heater. The Voltex Hybrid Electric Heat Pump Water Heater is one of the most cost effective water heaters on the market.Two 4,500-watt copper heating elements provide a first hour delivery of 62 gallons. Save money and energy with this energy efficient model that operates at a 0.92 Uniform Energy Factor (UEF) Tall and slim 59-in H x 20.5-in diameter profile is designed for easier installation. Premium heating elements, anode rod and fused ceramic tank shield ...Signature® 900 - 120V Plug-In Hybrid Electric Heat Pump 80-Gallon Water Heater - 10 Year Warranty. compare. Page 1 of 1. Heating water has never been more efficient with a hybrid electric heat pump tank water heater from the A. O. Smith Signature Series®. Discover the cost savings for yourself. A.O. SmithSignature 100 28-Gallon Lowboy 6-year Warranty 4500-Watt Double Element Electric Water Heater. 218. • Delivers the ideal amount of hot water for households with 1 to 2 people when sized appropriately. • Features two 4,500-watt copper heating elements that provide a first hour delivery of 43 gallons.

This hybrid electric heat pump water heater can save you up to 77% in annual energy costs versus a comparable standard electric water heater--that's $601 per year, or $6,010 over 10 years, in potential energy savings!* Get up to $2,000 back on your 2023 federal tax return when you purchase an energy efficient heat pump water heater this year.. Marble top dinning table

hybrid electric water heater

While conventional electric hot water heaters have an expected lifespan of 8 to 12 years, hybrid heat pump hot water heaters have an expected service life of 13 to 15 years. Eco-friendly : Unlike gas heaters, a hybrid heat pump hot water heater burns no fossil fuels and emits no harmful gases (so it doesn’t need venting to the outdoors), and it is much more …... hybrid electric heat pump Water Heater is designed to provide efficient and reliable hot water. ... Electric Water Heater with Hybrid Heat Pump. Item #816193 ...This ProTerra Smart Tank Electric Water Heater gives your home hot water, while also saving you on energy costs. It’s highly durable for long-term use with stainless steel elements and an auto shut-off ... Hybrid electric heat pump saves up to …ProLine ® XE Hybrid Electric Heat Pump 50-Gallon Tank Water Heater. User-friendly electronic interface. Reduces water heating cost by up to 73%. High-Efficiency and ENERGY STAR ® Certified with a UEF of 3.45. 10-year limited warranty. View All Hybrid Heat Pump Water Heaters.My house has 3 electric water heaters and my electric usage for hot water was quite high. Every night when the kids took a bath I would see a 2 Kwh spike in my electricity usage. I spent many many months researching heat pump water heaters before making the jump given the high cost. Hybrid water heaters, particularly those utilizing heat pump technology, extract heat from the surrounding air. This makes them significantly more energy-efficient than standard models, helping homeowners save money on energy bills. According to the U.S. Department of Energy, they can be up to 300% more efficient than conventional electric ... The Rheem ProTerra Electric Hybrid is the smartest, quietest and most efficient water heater on the market. This ProTerra hybrid model features LeakGuard, the integrated the 360 degree leak detection system and the auto shut-off valve system that shuts off incoming water, locks water in the tank and protects your home. It's smart: with its built-in WiFi and …Electric hot water heaters are an essential appliance in every household, providing us with the comfort and convenience of hot water for various purposes. When it comes to investin...Dec 16, 2020 ... Replies ... It's possible you could still get deposits, but it will be less than with the electric elements. You should be able to just set it on ...Jan 11, 2024 · Learn what hybrid electric water heaters are, how they work, and how to choose the best one for your home. Compare different types, costs, benefits, and drawbacks of this energy-efficient and versatile option. See the top 5 picks for 2024 based on efficiency, value, and features. Rheem Pro Terra Hybrid Water Heater Specs. The Pro Terra hybrid water heater is loaded with features, many of which are designed to improve the water heater’s ease of use and efficiency. This heater comes in these sizes: 40 Gallons (151.41 L): For a family of 2-4 people. 50 Gallons (189.27 L): For 3-5 people.Stiebel, Rheem and EcoSmart are among the best electric tankless water heater brands of 2024. Save energy and costs by comparing our top 5 picks.Hybrid water heaters move heat that already exists from one place to another, instead of generating heat directly. This allows hybrid water heaters to be at least three times more energy efficient than other types of water heaters. Compared to traditional units, a hybrid water heater can save you up to $3,000 over 10 years in energy costs.Rheem Manufacturing ranks as the global leader in the manufacture of high-quality, sustainable, and innovative water heaters, tankless water heaters, air conditioners, furnaces, pool heaters, and HVAC systems for residential and commercial applications, and is a full member of AHRI, the Air-Conditioning, Heating, & Refrigeration Institute. * All …Help homeowners save money while helping the planet with the Rheem® ProTerra® Hybrid Electric Heat Pump Water Heater. The most efficient water heater on the ...Price. ₱112,500.00. Lazada. How It Works. A. O. Smith HPI hybrid has a built in heat pump module that moves heat from the ambient air to the water, generating hot water very efficiently. Think about refrigerators, but in reverse. This renewable energy technology can work day and night, rain or shine and improves on availability and overall ...Price. ₱180,000.00. Lazada. How It Works. Absorbs ambient heat from the surrounding air to heat water using a compressor and environmentally-friendly R134a refrigerant. The self-contained heat pump unit is integrated into the top of the tank. Multiple operating modes to maximize efficiency and performance. Introducing the All-New Ruud Hybrid Electric Water Heater. The world’s smartest, quietest and most efficient water heater pays for itself with up to an estimated $5,000 in energy cost savings over 10 years. 1. Quietest – Operates at a sound level just above a whisper—in other words, you won’t even notice it’s on. A hybrid water heater is a feat of engineering efficiency that few homeowners know all that much about. Realistically, most of us only ever think about our water heaters when the when the taps run cold. …Model # HPSX-50-DHPT. The Premier® AL combines annual savings up to $600 per year* on utility bills with new anti-leak features for added peace of mind. It offers premium features including iCOMM™ Smart Connectivity, a user-friendly display, vacation mode to save money while you are away, and a heavy duty smart anode that adapts to local ....

Popular Topics