EchoEcho is an Illinois-based brand that was established in 1972. It is among the most prominent U.S. handheld outdoor power equipment manufacturers, with a global customer base. It has a keen interest in sustainability across its range, and its pressure washer products are both environmentally friendly and economical, using up to 80% less water than a regular garden hose and using recycled materials wherever possible.The Echo pressure washer range is small, limited to just two gas-powered units and a single corded electric model. Common features include quick-connect nozzle couplers, wheels on all models, and integrated detergent tanks. The PWE 1800 electric model is affordable at under $200, while its gas-powered units provide up to 4,200 PSI of power. There is great variance in the prices of the three models, with the flagship PW-4200 costing almost $1,500.A recent study of the most trusted pressure washer brands placed Echo highly among its competitors for build quality and owners' likelihood to recommend the company to others. However, it ranks among the lower companies on this list, given Echo's limited range and lack of innovative features.KärcherKärcher is a family-owned German brand with an 80-year history. While headquartered in Germany, it employs around 13,000 people globally, including in the United States. It proudly claims to offer quality German engineering and English language support, and on the face of it, Kärcher offers a comprehensive range of gas and electric pressure washers with some genuinely innovative features.The advanced range of electric pressure washers can include app compatibility via Bluetooth for detailed pressure control and three-in-one nozzle switching, using the multi-jet spray lance. Why you might require an app to use a pressure washer is a valid question, but it demonstrates the company's forward-thinking approach. Another interesting addition to the range is the K3 Follow Me model, which trundles behind you on four wheels, meaning you don't need to keep moving the unit when working on large areas, such as driveways. The rest of the range comes in compact casings, with two wheels for maneuverability (or they are small enough to be lifted into position).The gas-powered range offers just a handful of models, and its products are typically larger and more powerful, delivering up to 3,500 PSI of pressure for the flagship G 3500 QHT unit. On the other end of the scale, the entry-level G 2900 E model is among the most compact and affordable gas-powered pressure washers, while still powerful enough to tackle heavy-duty tasks. While Kärcher ticks most boxes across its wide range of products, it is a midfielder in terms of its predicted reliability and owner satisfaction ratings.GeneracGenerac was established in the mid-20th century and quickly made a name for itself as a manufacturer of quality generator engines that could withstand the rigors of prolonged and repeated use. It was among the early pioneers of pressure washers and among the first to create models specifically for home use, making this storied brand an important player in the history of this power tool segment.Generac divides its range according to residential grade and professional grade units, so it's easier to decide which pressure washer best suits your requirements. Prices vary from around $300 for the entry-level 2,300-PSI residential grade washer to over $1,600 for the flagship industrial grade 4,000-PSI gas-powered unit.The Generac range is heavily weighted toward gas power, with just two of the 16 models in the product line being corded electric designs. There are no battery-powered units available, and none of its pressure washers could be considered to be ultra-portable, with no handheld or lightweight options. However, build quality is excellent, with high predicted reliability and top marks for owner satisfaction from Consumer Reports. This makes Generac an excellent choice for demanding tasks around the home, or for professional use.GreenworksIt may not be among the best-known tool brands, but those looking to buy a cordless electric pressure washer for residential or light industrial use should consider Greenworks. The company prides itself on producing zero-emission tools across various power outputs, ranging from 24 to 80 volts. Among their large selection of gardening and landscaping tools is one of the most comprehensive ranges of battery-powered pressure washers for many different purposes.Greenworks favors the more powerful and efficient brushless technology in many of its products. These are available in ultra-portable handheld units, lightweight trolley-mounted models, and larger wheeled options with higher pressures of up to 3,000 PSI. Even the larger models store upright to save on space, and there is an extensive range of accessories on offer. These include multiple sizes of surface cleaners, foam reservoirs, various nozzles, and replacement gun kits.True to its dedication to environmental concerns, there are no gas-powered options from Greenworks. However, its battery-operated models come highly recommended, with Consumer Reports awarding it its highest rating for predicted reliability and matching the best-scoring brands for customer satisfaction. As such, it places highly among this ranking despite not offering a wider choice of power sources.Sun JoeSun Joe is to outdoor gardening and landscaping tools what its sister branch, Snow Joe, is to snowblowers and assorted winter tools. Consumer analysis company TraQline states that it is the number-one seller of electric pressure washers in the USA, and it has won awards from the National Hardware Show for its innovation.Like Greenworks, Sun Joe's product line is dedicated to electric pressure washers, although it also produces corded electric models that give it an edge regarding PSI power output. The range comes in many different shapes, weights, and sizes to suit multiple applications, and it also utilizes brushless technology to optimize its electric motors. Sun Joe is also an affordable brand, at between $120 and $300 across its extensive product line, which includes over 25 models and additional accessories.Common features of Sun Joe pressure washers include integral hose reels, quiet operation, switchable nozzles for foaming, cleaning, and rinsing, and high build quality throughout. It placed at the top of Consumer Reports' owner satisfaction rating and scored a maximum of five points for predicted reliability. Such high ratings across an extensive product line place Sun Joe near the top of this ranking.