Rheem company put a lot of focus and though when developing this innovative product not only to improve its performance but efficiency as well. They are classified according to size and range from 29 gallons to 98 gallons. Call 1-866-496-2032 or click the link above to confirm the availability of this service in your area and schedule your FREE* consultation with a Rheem® dealer near you. Water Heater; 50 Gallon; Rheem 50 Gallon Manuals Manuals and User Guides for Rheem 50 Gallon. It comes with coils to heat the water. In fact, Dahl Plumbling here in Santa Fe, NM dropped the entire Rheem brand line! Lowe's and Home Depot don't even carry these gas powered Rheem water heaters. After all of the considerations of efficiency, 1 hour recovery rate, unit size (I have limited space), cost (including shipping) this unit seemed to fit all my needs at a very good price. It is known as the most compact water heater. The Rheem Performance Plus is a water heater available in gas and electric models. This Rheem 76-gallon unit is a tall gas water heater, designed and built with commercial/residential usage in mind, being able to meet heavy-duty demands. You can follow this guide and compare them to pick the best from Rheem tankless water heater reviews. Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater. Natural Gas Tall Water Heater comes with a 40,000 BTU/hour environmentally friendly low NOx burner that provides ample hot water for households with 3 to 5 people. Rheem Water Heater Reviews for 2020: Buy the Best One! I knew from these reviews to cut open the box and refuse delivery when I saw the dents. 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. I was in the Plumbing business for 25 years and then a Plumbing Inspector in the City of Boston for another five years. The Rheem ProG50-RH67 is one of the models made with durability in mind. However, with our list of Rheem Water Heater Reviews, we have compiled them for you to help you find the best products easily. Also, the shut-off valves, relief valves, fuel pipe, and outlet pipes are made with sturdy metal materials to improve its durability. Whether you need high water delivery or low energy costs—or both, we have your next water heater. Rheem     Noritz     Takagi A 50 gallon gas water heater providing an ample supply of water to households with 3-5 people. Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater . You can still see all customer reviews for the product. According to the manufacturers, the Rheem ProG50-RH67 has a heating efficiency of 0.67 EF. I already have it for about 2 years. In contrast, gas water heaters with tanks up to 55 gallons only need a UEF above 0.64 or 0.68, depending on how they use water during the day. I needed one asap but took the time to do some research. Reviewed in the United States on March 23, 2013. Top subscription boxes – right to your door, Rheem 22V50F1 Natural Gas Water Heater, 50 Gallon, See all details for Rheem 22V50F1 Natural Gas Water Heater, 50 Gallon, © 1996-2020, Amazon.com, Inc. or its affiliates. Rinnai RUC98iN Ultra Series – Best Gas Tankless Water Heater. The delivery guy was pleasant and loaded it back on the truck. Residential Gas Water Heater. This … Now, let’s start! The push button ignition system ensures safe and easy startup. The brand’s tanked heaters are quite popular for their affordability and efficiency. No Hot Water . Rheem 40 Gallon Gas Water Heater Review – Professional Classic Atmospheric Series. How to Size an Infrared Patio Heater for an Outdoor Patio? Review of Rheem 50 Gal) Best Water Heater – Reviews, Brands, Buyers Tips – Complete Guide. Apart from this, we found that the interior specifications are made up of high quality. Tall Natural Gas Water Heater. To their credit, the return/credit process was handled well. This page works best with JavaScript. Find helpful customer reviews and review ratings for Rheem MR50245 Marathon Tall Electric Water Heater, 50-Gallon at Amazon.com. Electric heaters of A.O Smith vs. Rhyeem: Like the gas heaters, the electric heaters of A.O Smith are … Before buying a water heater, one of the essential factors to consider is its capacity and efficiency. Minimize Space. Reviewed in the United States on December 3, 2012. Besides, it is environmental friendly as well as durable features. Our findings have indicated that AO Smith’s ProLine provides better customer experiences. My back make love to too many cast iron bath tubs. Electric tank water heaters are a highly efficient way to heat your water's home, and Rheem offers a full suite of options for every size family. I'm retired now and not really able to carry water heater. Lightweight. The Rheem ProG50-RH67 comes with numerous great features than you can imagine. 50, and 55 gallon tanks. Product may be good, but not when delivered upside-down, Reviewed in the United States on March 12, 2013. An essential part of any Rheem Hybrid Water Heater review is knowing the specifics of Rheem's line of hybrid water heaters. Same problem…seven minutes of hot water and then nothing…this from a 50 gallon water heater! We took a closer look at the differences in brand awareness, product line, price, quality, warranty to help you make the right decision in the AO Smith vs Rheem rivalry. View The Best Product On Amazon Amazon. Top 10 Best Gas Water Heater 2020 Reviews. Exclusive to the Home Depot! Purchased a 40 gallon Rheem gas water heater June 2013, and as of Sept./Oct. Amongst the features that stand out is its energy efficiency. I have seen this water heater in use, and they work well. Met many brand names and when I first saw Rheem on Amazon I perked up. They've been making residential gas and water heaters since the1930s. Disabling it will result in some disabled or missing features. More than often, commercial water heaters are designed to provide enough water for residential use. For Shower            Under sink, Commercial           Cold Climate The Rheem ProG50-RH67 is made to work nearly in all sorts of environments or seasons. Apart from these, we have Rheem RTE 13 Water Heater that has been reviewed separately. This Ecosmart ECO 40 Gallon water heater is can support 4 showers at a time. The Rheem Performance 50 Gal. Some of the features of this model include: 1. Rheem manufactures and markets gas and electric water heaters. You’ll never get disappointed. The one electric unit is available in 40 and 50 gallon capacities, with a .95 energy factor. At the same time, the presence of power venting with a two-pipe system makes the installation easy and flexible. Bradford-White TTW Water Heater. Westinghouse 80 Gal. As such, the next time you think of buying a water heater, think of Rheem ProG50-RH67. The Rheem 22V50F1 Natural Gas Water Heater produces piping hot water. Tankless Solutions. 40 and 50 gallon tall and short capacities Integrated self-diagnostic system control, thermostat and gas valve SCAQMD rule 1121 compliant models available: 10ng/J NOx emissions As such, the new Rheem ProG50-RH67 has all the safety measures to ensure users aren’t harmed in any way. Bradford White 40 Gallon Natural Gas Water Heater 9.50/10 7. We are comparing two different water heaters. The guardian system, which is fitted in the combustion system, works by shutting off the air or gas supply the moment it detects any spills. The Rheem Marathon offers homeowners 50 gallons of hot water when full and the brass full-flow drain valve will keep that water flowing when you need it. Ecosmart ECO 36 36kw comes in very handy especially in southern parts of the USA. We offer a wide range of products to suit your home’s needs including tankless water heaters. Remember, personal safety comes before any other thing. Reviewed in the United States on May 4, 2011. It heats water much faster to a required temperature. Maximize Output. Rinnai     EcoSmart, Indoor                    Outdoor A premium grade anode rod helps extend the tank’s lifespan, further ensuring these tanks qualify for a number of incentive program. The 50-Gallon gas water heater is run by propane gas which makes it much safer to run. With an efficiency rating of .80, this is Rheem's most efficient tank type gas water heater, exceeding Energy Star Phase II requirements. For this article, we will make a detailed review of the product. Amazon offered to refund or replace if it didn't work, and offered a small credit for the damage if we decided to keep it. 1. I did not make a bad choice. 1 A.O. They are further categorized into either good, better, or best. Other reviews have stated delivery issues, I am writing this to say I agree. If you want the perfect Water Heater for your family, get one from our Top 40 Gallon Water Heaters. If you really need a water heater. In fact, it was so much hotter than our previous hot water heater we had to turn the thermostat down! The 6 Best 40 Gallon Water Heater Reviews 1. We looked at the Rheem Gladiator Water Heater as a reference point for our guide. We made research for over 180 hrs to prepare this list Bradford White BWC RE350T6. Rheem tank gas water heaters Rheem offers more than 20 types of water heaters under this category. Reviewed in the United States on March 20, 2014. Priced under $1,000 on Amazon today, the 0.9-0.94 efficiency rating is just the start of the good things this hot water heater can bring into a home. Rheem has managed to design a unit that can easily fit into your home, and provide you with a strong supply of hot water. One of the best features that come with this water heater is that it is portable. Most 50-gallon hot water heaters in … Whole house         Point of use The gas models range in capacity from 28 to 75 gallons, with an energy factor of up to .67. Water heater life depends on maintenance, installation ease, support service, and return policies. Gas Tanked & Tankless Water Heaters Winner: AO Smith. The water heater comes with automated features such as self-cleaning, self-diagnosis, and other auto-controls. This is another important feature of the Rheem ProG50-RH67 than can never go unnoticed. Rated at .92-.93 UEF, this series boasts a 12-year warranty, Ever-Kleen technology, and the EcoNet WiFi control system. One of the top tankless gas water … This thing is sitting next to a same warrantee 40 gallon bought from another vendor for the same price 3 or 4 years ago and looks and feels like crap compaired to the Rheem. Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater Review. Gas & Propane Water Heaters Propane Tankless Water Heater – 4 Reviews incl. The ratings were left because the item arrived dented or damaged. A 50 gallon gas water heater providing an ample supply of water to households with 2-4 people. It is for this reason that Rheem ProG50-RH67, which is regarded as the best 50 gal Rheem water heater. It works great supplying hot water when I need it, Reviewed in the United States on November 27, 2014. About the Rheem 50 gal. Whether you need high water delivery or low energy costs—or both, we have your next water heater. The Rheem Performance Line. Smith 80 Gallon Light Service Commercial Electric Water Heater – $ Technical Specs. For instance, the heater tank is designed with a patented magnesium anode alongside a special resistor that helps it resist corrosion and rust. One thing you shouldn’t worry about this water heater is its maintenance. This helps in the removal of combustion gases outside while forcing fresh air inside the heater. About the Rheem 50 gal. This sleek and efficient water heater is a smart choice for just about any household. Therefore, this article looks in detail the functionality, efficiency, and performance of the Rheem ProG50-RH67 water heater, which replaced the old model Rheem 43VP50E2. They … Despite Rheem ProG50-RH67 being new in the market, it’s already growing in terms of popularity. First, we will be looking at the ProLine XE 50-Gallon Gas Water Heater by AO Smith and the Professional Classic Plus 48 Gallon Natural Gas Water Heater by Rheem. Rheem is a highly recognizable name in water heating systems. Read honest and unbiased product reviews from our users. Here are tips for solving your Rheem water heater problem or deciding to call a Rheem service company to handle the repair. The Rheem 22V50F1 Natural Gas Water Heater produces piping hot water. This is before I found out that Rheem Water heaters have a TERRIBLE reputation. Nitrous Oxide is one of the greenhouse gases that are responsible for causing ozone depletion and global warming. The size you buy depends on the number of people living in your home and your peak water usage. Therefore, you can use this water heater in regions with strict gas emission rules freely without any worries. Reviewed in the United States on March 27, 2013. Rheem has managed to design a unit that can easily fit into your home, and provide you with a strong supply of hot water. Lowered the setting to mid-way and it still produces enough hot water for a family of 4. This particular model requires a 110-volt power source. AO Smith GCR-40 ProMax Plus – High-Efficiency Gas Water Heater Review. My heating and plumbing came the next day and installed it. Gas units are available with several venting options, including direct vent and power vent. Unlike most commercial water heaters, the Rheem ProG50-RH67 is regarded as eco-friendly due to several factors. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. Here we made 4 best Rheem gas tankless water heaters reviews for you: 1. Beginning with a 40,000 BTU/hour, low NOx burner, this heater provides ample water at … Their expertise and professionalism can be attested by their positive reputation from clients worldwide. From a respected name in water heaters comes the Rheem Performance Platinum 50 Gal. Very pleased with the performance and energy savings built into this unit. Amongst the features that stand out is its energy efficiency. Rheem is one of the most recognized water heater manufacturers in the world. The 6 Best 40 Gallon Water Heater Reviews 1. And at a whopping 100 pounds, this water tank stands strong and sturdy. It works great supplying hot water when I need it. Check Price On Amazon. Seriously people THE QUALITY of this water heater AMAZED me on AMAZON. This item was highly rated not only on Amazon but by other consumer products review companies. 1. Large home           Small home lol. Read honest and unbiased product reviews … The Encore series makes its mark in the electric water heater market with 40,. This Rheem Performance Platinum may possibly be the best 50-gallon gas water heater for medium-sized households. We made research for over 180 hrs to prepare this list The fact that it’s seamless and blow-molded esure this polybutene tank stays rust and corrosion free for as long as you have it. The Rheem Performance Platinum 50 Gal. In fact, they’re one of the top companies in America. No more HD or Lowe's for Water Heaters. Your recently viewed items and featured recommendations, Select the department you want to search in, Reviewed in the United States on February 16, 2013. What made them even more popular is their gas storage heater, which … AO Smith ENS-50 ProMax Short Electric Water Heater Review. Residential Gas. Ecosmart ECO 36 36kw comes in very handy especially in … Rheem companyput a lot of focus and though when developing this innovative product not only to improve its performance but efficiency as well. When to Use a Power Vent Water Heater (Incl. This gas water heater is Energy Star rated and has a 12-year warranty. It comes with a self-cleaning technology that is designed with patented system fittings. The two gas units both come in 40 and 50 gallon capacities, with an energy factor of .62. The GCR-40 ProMax is one of the best 40-gallon gas water heaters out there. Secondly, the heater’s burner is made of stainless steel, which improves its thermal stress. Reviewed in the United States on April 6, 2013. So it is never a problem for anyone to install the product and keep using it. Rheem MR50245 Marathon Tall Electric Water Heater: Best 50-gallon electric water heater. This model has a 12 year limited tank and parts warranty plus a 1 year in home labour warranty. What Size Electric Tankless Water Heater Do I Need For a Shower. Not long after purchasing out house in June 2010 out water heater died. Gas models are priced on the size of the tank, added features it may have, or if it is a tankless model. It was delivered quickly, packaging was intact ( a major concern especially after reading reviews about damaged units). If your old enough to remember the American Tourister luggage commercial, then the gorilla would go on to become a delivery person. Also, the water heater comes with a brass drain valve to help the user control the temperature and pressure. 50 Gallons $$$$ Rheem PROG50-42N Professional Classic Water Heater: 5.0 : 6 Year: 42,000: 50 Gallons $$$$$+ Takagi T-T-KJR2-OS-LP Outdoor Water Heater: 4.5 : 10 Year: 140,000: Tankless $$$ AO Smith GPVX-75L ProMax Power Vent Water Heater: 5.0 : 10 Year: 76,000: 50 Gallons $$$$$+ Rheem G100-80 Natural Gas Universal Water Heater: 5.0 : 3 Year: 75,000: 100 Gallons $$ … We found that the product has a … If you’re looking for insights into the top-rated Rheem water heaters on the market, you’ve come to the right place. Key Features Rheem High Efficiency Condensing gas water heater. ... We found that the tank inside is also decent enough and comes around the strength of 50 gallons. The AO Smith Gas Heater XCR-50 is a good model to compare to the Rheem 40 gallon gas water heater. The electronic ignition system eliminates the standing pilot light, saves energy and monitors system performance. The product is one of the more popular heaters from AO Smith and operates solely on natural gas. Electric or gas water heater: As there are two kinds of 50-gallon water heaters, gas, and electric, it is important to fix the type you need. It was super easy to install and worked perfectly! Ranging in capacity from 40 to 75 gallons, the Bradford White … This product is also gas-powered, features some great energy-saving technology, and is built with durable, quality materials. Last but not least, the heater features a durable silicon nitride ignitor. How Much is a Gas Water Heater? Lowered the setting to mid-way and it still produces enough hot water for a family of 4. As with other reviewers, we first received a water heater with two large dents near the top. They delivered it to the door and then brought it down the cellar. The model is all about giving you the performance that you can always like as compared to the other models on the… To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. It also analyzes reviews to verify trustworthiness. Natural Gas Tall Water Heater comes with a 40,000 BTU/hour environmentally friendly low NOx burner that provides ample hot water for households with 3 to 5 people. The push button ignition system ensures safe and easy startup. Natural The Rheem Performance Platinum 50 Gal. 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. The 40-gallon capacity is housed inside a 22 x 22 x58.5 inches metal body. The installation was easy using the suggestion that one of the reviewers gave, to use Shark Bite connection so I didn't have to sweat the connection while water is oozing out. RV                         Camper, 50 Gal Rheem Water Heater Review – ProG50-RH67, The 5 Best Electric Tankless Water Heater for Cold Climates Reviews 2020, 6 Best 5 GPM Tankless Water Heater Reviews For Small & Large Home Shower Use in 2020, 7 Best 120v Tankless Water Heater Reviews – Under Sink Electric Point of Use 2020, Best 8 GPM Electric Tankless Water Heater Reviews, 5 Best Gas Tankless Water Heater Reviews & Comparison Chart, 6 Best Tankless Water Heater Brands on the Market- Our Review, 5 Best Propane Tankless Water Heater Reviews For Less Energy Costs, The 6 Electric Tankless Water Heaters Reviews & Guidance, 5 Best Condensing Tankless Water Heater Reviews for 2021. This sleek and efficient water heater is a smart choice for just about any household. The Bradford White BWC RE350T6 includes a compact body that is decent in size. Please make sure that you are posting in the form of a question. It is known as the most compact water heater. 2016, it has already developed a bottom leak. In use, you should pay more attention to the ventilation and pipe of gas. This is a significant achievement of the company. The Rheem Professional Classic is a water heater available in both gas and electric models. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. Very pleased with the performance and energy savings built into this unit. The complete A. O. Smith line of natural gas and liquid propane tank water heaters comprise around 60 different models while the Rheem brand has developed a line of 43 models. The company was founded in California in the year 1921. A global leader in hot water tank … This model from Rheem is a 50-gallon electric water heater with a high level of efficiency. This heater provides ample water at a lower cost than older models. Residential Gas Water Heater. They carry a brand that is OEM'd by Rheem apparently but haven't confirmed. 3. Tall Natural Gas Water Heater. The unit has a LED diagnostic system, which helps with heater maintenance and upkeep. They are further categorized into either good, better, or best. If you want the perfect Water Heater for your family, get one from our Top 40 Gallon Water Heaters. Rheem 40 Gallon Gas Water Heater Parts Diagram Uncategorized January 1, 2021 0 masuzi Rheem 21v40 5 gas water heater parts natural gas water heater diagram full basic parts for gas water heater wiring diagram rheem water heaters full Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. But ordering online and having it delivered from wherever, it not recommended. Water heater was delivered with 2 large dents. He also removed the box and I was able to inspect it for damage right there. A simple push button ignition system makes for safer startups, while the tank's … How Long Does a Propane Tank Last On a Patio Heater? Over the lifespan of the appliance, gas hot water heaters almost always come out ahead. They are classified according to size and range from 29 gallons to 98 gallons. Rheem Water Heater Troubleshooting. The Rheem ProG50-RH67 comes with numerous great features than you can imagine. Qualifications for tanks over 55 gallons are even higher. From a respected name in water heaters comes the Rheem Performance Platinum 50 Gal. It was so easy to install anyone with some mechanical background could have done it. First off, AO Smith is solely focused on the water he… First, it is built with low NOx designs, which reduces the emission of nitrous oxide. Natural Gas Tall Water Heater comes with a 38,000 BTU/hour environmentally friendly ultra-Low-NOx radiant burner that provides ample hot water for households with 3 to 5 people. Brand: Rheem | Category: Water Heater | Size: 3.34 MB Table of Contents. One of the things that makes it more popular is its top functionality and efficiency. There's a problem loading this menu right now. Check Price on Home Depot. Reviews of the 8 Best Rheem Water Heaters, Plus 1 to Avoid: Rheem is a leader in water heating systems. Rheem is not as old as Bradford White but has also made a long-lasting impact in the water heater market. Find helpful customer reviews and review ratings for Rheem 22V50F1 Natural Gas Water Heater, 50 Gallon at Amazon.com. Gas water heaters have a quicker recovery time, about 50-gallons per hour compared to around 14-gallons per hour of an electric water heater. Overall very pleased with this purchase. This … Rheem is well-respected in the industry as a manufacturer of quality water heaters. Its reputation for manufacturing durable, reliable water heaters makes it a good choice for most homes. According to the manufacturers, the Rheem ProG50-RH67 has a heating efficiency of 0.67 EF. The cardboard box had little damage to indicate the crushed water heater within. The dent was in the venting area at the bottom and didn't appear to have damage to the internal components, so we proceeded to install it. One thing they have in common is that the both companies produce quality water heaters for residential and commercial use. Electric heaters are more expensive and less expensive. Commercial Electric Water Heater, 12000W – $$$$$ – Skip to section; Westinghouse 100 Gal. For instance, it can be used even in high altitudes of up to 10,000 feet above sea level. The water heater is quite expensive, and it is a perfect choice for those who are in search of luxury water heaters. The one electric unit is available in 40 and 50 gallon capacities, with a .95 energy factor. Its April 2013 and i just realized that I never wrote a review on this purchase. The company sells water heater models in gas, electric, tankless, solar and hybrid styles. The brand’s tanked heaters are quite popular for their affordability and efficiency. It's the only way to fly. In a review of these 1 star ratings, every single one has to do with the shipping of the hot water heater from Rheem. This functionality is automated and helps in preventing sediment deposition within the tank. ... 30, 40, 50, 85 and 100 gallon capacities; LEARN MORE. The Rheem Performance Plus 50 Gal. Due to this, the risk of negative pressure building in your heater is also reduced significantly. If you are looking for a water heater to serve a family of three to five, then the Rheem ProG50-RH67 will best suit you. What’s more, the function also facilitates faster water heat up while preserving energy consumption. Check below to know all about the Rheem water heater reviews! Rheem® Water heaters is a brand known for reliability. All electric water heaters and gas heaters that use electricity: The first issue to troubleshoot is … This tank water heater offers excellent all-around performance and efficiency. With a full line of Rheem ® tank and tankless water heaters to choose from, there’s sure to be one that’s the right fit for your family. Rheem 50 Gallon Use And Care Manual (28 pages) Residential Gas water heater. What’s more, the water heater also contains a flame arrestor plate that works for hand in hand to prevent ignition accidents. The self-diagnosis functions allow for easy troubleshooting at the right time. Besides, it has a guardian system which provides additional protection in case of accidents. We have 4 Rheem 50 Gallon manuals available for free PDF download: Use And Care Manual, Use & Care Manual . Product delievered with dents and faulty pressure release valve, Reviewed in the United States on October 5, 2011. 7 Best 40 Gallon Gas Water Heater Reviews in 2020. RTG-95XLN Outdoor Tankless Natural Gas Water Heater. The two gas units both come in 40 and 50 gallon capacities, with an energy factor of .62. Rheem Water Heater Reviews. With a full line of Rheem ® tank and tankless water heaters to choose from, there’s sure to be one that’s the right fit for your family. The unit apparently was bounced several times and delivered to the home Upside-down. According to consumer reports, 37% of households prefer AO Smith gas tanked water heaters against 22% going with Rheem. What homeowners will find is that at this price point, Rheem is providing the only 50 gallon natural gas water heater that provides a brass drain valve. Rheem Rudd 80 gal. 4500W Lifetime Warranty Electric Water Heater with durable 316L Stainless … Besides, it has a long venting system of about 100 feet. This 50-gallon electric water heater is about as durable as it gets. You can trust any of the 50-Gallon gas water heaters from A.O Smith to deliver you a safe and fast performance. TOP PICK: Rheem Performance Platinum Gas Water Heater. When it was delivered, I gave a generous tip for the deliverer and he took it to the place where it belongs. Another significant factor to consider is the durability and ease of use. Tank water heaters typically hold 40, 50, or 55 gallons or more. Choosing a water heater near or above the Energy Star standards will save money on your utilities, though the most efficient units usually command the highest prices.