{"product_id":"geesen-tankless-water-heater-27kw-endless-hot-water","title":"Tankless Water Heater Electric 27kW 240V - Instant Whole House Hot","description":"\u003cp\u003eIn this review the focus is on whether the Tankless Water Heater Electric 27kW 240V is a practical replacement for a conventional hot water tank in a typical single-family home. The bottom line: this unit is best for homeowners who need fast, continuous hot water for multiple fixtures and who can support a fairly large electrical load. The reviewer found the instant-on performance and compact footprint convincing for whole-house use, while noting that the electrical requirements and professional installation are important considerations before purchase.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstant Hot Water:\u003c\/strong\u003e Heats on demand and delivers hot water in about 3 seconds, removing the wait and reducing wasted cold water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Flow Rate:\u003c\/strong\u003e Provides up to 3 GPM at a 35F temperature rise, which supports simultaneous use of showers and sinks without major temperature drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Efficient:\u003c\/strong\u003e Only energizes heating elements while water flows, so it avoids the standby losses common to tank systems and can lower utility bills.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Small cabinet size fits into tight utility spaces and eliminates the need for a bulky tank, freeing up storage room.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Control:\u003c\/strong\u003e Built-in digital temperature display allows simple monitoring and fine control of output temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService Support:\u003c\/strong\u003e Manufacturer offers one-year return and exchange service and direct email support for installation questions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis unit suits homeowners who prioritize immediate hot water and have multiple simultaneous hot water demands, such as families running a shower and a sink at once. It is also a good choice for those renovating homes where space for a tank is limited and who want the energy savings of a point-of-use whole-house solution.\u003c\/p\u003e\u003cp\u003eIt is not appropriate for homes without adequate electrical capacity or for buyers unwilling to arrange professional electrical work, since the unit requires a substantial 120 Amp breaker configuration and specific wiring. Renters or small apartments with limited service should consider lower-power options.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVery fast heat-up time gives hot water in roughly 3 seconds, improving comfort and reducing wasted water.\u003c\/li\u003e\n\u003cli\u003eStrong 3 GPM flow at a 35F rise supports simultaneous fixtures for whole-house use.\u003c\/li\u003e\n\u003cli\u003eCompact footprint saves space compared with tank heaters and is simpler to site in tight areas.\u003c\/li\u003e\n\u003cli\u003eEnergy efficiency from on-demand operation can reduce ongoing energy waste versus tank systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eRequires a high electrical capacity (3 x double-pole 40A sets, 3 x 8 AWG wiring), so installation can be costly.\u003c\/li\u003e\n\u003cli\u003eMaximum draw of 112.5 amps means not all homes can accommodate it without panel upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e27kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow Rate\u003c\/td\u003e\n\u003ctd\u003e3 GPM at 35F rise\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Requirement\u003c\/td\u003e\n\u003ctd\u003e120 Amp setup: 3 sets of double-pole 40A breakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Current\u003c\/td\u003e\n\u003ctd\u003e112.5 amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnections\u003c\/td\u003e\n\u003ctd\u003e3\/4' NPT water connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e13.78' x 3.86' x 18.7'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe 27kW tankless electric heater is a strong value for homeowners who can meet its electrical requirements and want dependable, instant hot water for multiple fixtures. Its compact size, 3 GPM flow, and energy-saving on-demand heating make it a practical upgrade from tank systems, provided the installation is handled by a licensed electrician and the home electrical panel is adequate.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan this unit run multiple showers at once?\u003c\/strong\u003e\u003cbr\u003eYes, it delivers about 3 GPM at a 35F temperature rise, which typically supports simultaneous use of a shower and additional fixtures in many homes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat electrical work is required?\u003c\/strong\u003e\u003cbr\u003eIt requires a 120 Amp breaker setup using 3 sets of double-pole 40A breakers and 3 x 8 AWG wire; professional installation by a licensed electrician is recommended.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat warranty or support is offered?\u003c\/strong\u003e\u003cbr\u003eThe manufacturer provides a one-year return and exchange service and direct email support for installation questions.\u003c\/p\u003e","brand":"GEESEN","offers":[{"title":"Default Title","offer_id":46772085981403,"sku":"B0D4QZ66M2","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51DRh366QhL._AC_SL1500.jpg?v=1747587149","url":"https:\/\/gearmusthave.com\/products\/geesen-tankless-water-heater-27kw-endless-hot-water","provider":"GearMustHave","version":"1.0","type":"link"}