{"product_id":"instant-hot-water-on-demand-3500w-electric-heater-by-green-point","title":"Tankless Water Heater Electric Under Sink 3500W - Instant Hot Water","description":"\u003cp\u003eOur review of the Tankless Water Heater Electric Under Sink 3500W finds it best suited for compact kitchens, washbasins and mobile setups where on-demand hot water is needed close to the point of use. The single biggest reason to buy is its quick, space-saving design that delivers instant hot water without a storage tank, making it a practical choice for limited spaces where a dedicated 32AMP circuit and a 13AWG line can be provided. This review focuses on real installation and operation details so buyers know what to expect before purchase.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Vertical Mount:\u003c\/strong\u003e The unit is designed to be mounted vertically so it fits neatly under sinks or in RV compartments and saves counter space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstant 3500W Heating:\u003c\/strong\u003e With 3500W at 110V the heater provides rapid on-demand warming ideal for kitchen and basin use without waiting for a tank to heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Temperature Display:\u003c\/strong\u003e The display shows temperature in degrees Celsius only for accurate monitoring of outlet water temperature during use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Construction:\u003c\/strong\u003e Inside quality materials include a 304 stainless steel lining, 316L heating tube and brass interface for corrosion resistance and longer service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure-Activated Start:\u003c\/strong\u003e The unit requires 0.15-0.4MPa water pressure to start, which helps prevent dry-heating and ensures reliable activation at small flows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear Electrical Requirements:\u003c\/strong\u003e Requires a dedicated 13AWG line and 32AMP circuit breaker, making electrical planning straightforward for safe installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe heater is best for homeowners or RV owners who need a compact, point-of-use \u003cstrong\u003einstant hot water\u003c\/strong\u003e solution for sinks and small basins where low to moderate flow is acceptable. It suits kitchens, under-sink installations and mobile living where a vertical mount and close proximity to the hot point are possible.\u003c\/p\u003e\n\u003cp\u003eIt is not intended for full showers or high-flow applications; buyers who need shower-ready flow rates (typically above 1.8 gpm) or who cannot provide the specified electrical circuit should look for larger or specifically shower-rated tankless systems.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompact vertical design conserves space and installs neatly under sinks.\u003c\/li\u003e\n\u003cli\u003eFast heating at 3500W provides near-instant hot water for kitchen tasks and handwashing.\u003c\/li\u003e\n\u003cli\u003eDurable materials including 304 and 316L stainless steel parts improve longevity.\u003c\/li\u003e\n\u003cli\u003eClear electrical and installation notes reduce guesswork for installers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDisplays temperature only in Celsius, which may require conversion for some users.\u003c\/li\u003e\n\u003cli\u003eRequires a dedicated 32AMP breaker and specific wiring, so retrofitting can be more involved.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e3500W at 110V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eVertical only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Connection\u003c\/td\u003e\n\u003ctd\u003e1\/2' NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Requirements\u003c\/td\u003e\n\u003ctd\u003e13AWG dedicated line, 32AMP circuit breaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart Water Pressure\u003c\/td\u003e\n\u003ctd\u003e0.15-0.4MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterials\u003c\/td\u003e\n\u003ctd\u003e304 stainless lining, 316L heating tube, ABS shell, brass interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eDigital, degrees Celsius only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor buyers who need a reliable under-sink \u003cstrong\u003eon-demand hot water\u003c\/strong\u003e source, this tankless heater is a practical, space-saving option that delivers fast warm water for kitchens and basins. It offers solid construction and clear installation requirements, but requires planning for the 32AMP dedicated breaker and vertical mount. Overall it represents good value for the right use cases where tankless instant heat close to the faucet matters most.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this unit be used for a shower?\u003c\/strong\u003e\u003cbr\u003eNo. This model is not suitable for showers because typical showers need higher flow rates than this unit is designed to deliver.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat electrical work is required?\u003c\/strong\u003e\u003cbr\u003eYou must provide a dedicated 13AWG line and a 32AMP circuit breaker and ensure the switch is installed under the sink but not touching the cabinet.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow should I start the unit?\u003c\/strong\u003e\u003cbr\u003eTurn on the water first, ensure water pressure is within 0.15-0.4MPa to start, then switch on the power; do not attempt to power it without water flow.\u003c\/p\u003e","brand":"Green Point Home","offers":[{"title":"Default Title","offer_id":46771142885595,"sku":"B0DRG9F2WF","price":55.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/513X2KQFnQL._AC_SL1500.jpg?v=1747585666","url":"https:\/\/gearmusthave.com\/products\/instant-hot-water-on-demand-3500w-electric-heater-by-green-point","provider":"GearMustHave","version":"1.0","type":"link"}