{"product_id":"rinnai-re140in-gas-tankless-water-heater-up-to-5-3-gpm","title":"Rinnai RE140iN Tankless Natural Gas Water Heater - Compact, Reliable","description":"\u003cp\u003eOur review of the Rinnai RE140iN finds a compact, high-flow non-condensing tankless heater best suited to households that need steady hot water for multiple fixtures without sacrificing space. The RE140iN delivers up to \u003cstrong\u003e5.3 GPM\u003c\/strong\u003e and a robust 140,000 BTU rating while occupying roughly the size of a small suitcase, so the single biggest reason to consider it is its combination of reliable on-demand performance and a space-saving footprint for indoor installation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact footprint:\u003c\/strong\u003e The small, suitcase-size enclosure makes it easy to install in cramped utility rooms where a tank would not fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh flow capacity:\u003c\/strong\u003e Rated for up to 5.3 GPM, it can supply hot water to multiple fixtures simultaneously in many homes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e Backed by a 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, which supports long-term ownership confidence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eServiceability:\u003c\/strong\u003e Redesigned internal layout and sliding bracket simplify alignment and speed up professional installation and maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED display and diagnostics:\u003c\/strong\u003e The front LED lets you view error codes and reminders, making troubleshooting clearer for technicians.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart upgrade option:\u003c\/strong\u003e Compatible with a Controlr module for WiFi control (sold separately) for remote monitoring and convenience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe RE140iN is aimed at homeowners who want dependable hot water on demand without a bulky tank and who have access to qualified professional installation. It suits medium to larger households in warmer climates or where ground water temperatures are moderate, because customers report strong real-world performance in such conditions.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include buyers needing a condensing unit for maximum efficiency in cold-climate installations or anyone planning DIY installation; Rinnai and professionals recommend hiring a trained technician for proper setup and venting.\u003c\/p\u003e\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 size that reclaims storage space while delivering solid hot water flow.\u003c\/li\u003e\n\u003cli\u003eLong residential warranty terms on the heat exchanger and clear serviceability improvements for technicians.\u003c\/li\u003e\n\u003cli\u003eReliable operation reported by customers, including long service life when maintained properly.\u003c\/li\u003e\n\u003cli\u003eLED diagnostics and optional WiFi Controlr compatibility add convenience and easier troubleshooting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNon-condensing design is less efficient than condensing models in colder inlet water conditions.\u003c\/li\u003e\n\u003cli\u003eWiFi control module not included, and professional installation is recommended, adding to initial cost.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRE140iN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Type\u003c\/td\u003e\n\u003ctd\u003eNatural gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Flow Rate\u003c\/td\u003e\n\u003ctd\u003eUp to 5.3 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat Output\u003c\/td\u003e\n\u003ctd\u003e140,000 BTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eIndoor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty (residential)\u003c\/td\u003e\n\u003ctd\u003e15-yr heat exchanger, 5-yr labor, 1-yr parts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Rinnai RE140iN is a strong value for homeowners who need reliable, space-saving on-demand hot water and who will use a qualified installer. It trades some condensing efficiency for simpler installation and proven durability, making it a practical choice for many warm-to-moderate climate households.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this unit handle multiple showers at once?\u003c\/strong\u003e\u003cbr\u003eAt up to 5.3 GPM, it can support several fixtures simultaneously in many homes, though exact performance depends on inlet temperature and fixture flow rates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs WiFi control included?\u003c\/strong\u003e\u003cbr\u003eThe unit is compatible with a Rinnai Controlr for WiFi, but that module is not included and must be purchased separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a professional to install it?\u003c\/strong\u003e\u003cbr\u003eYes, professional installation is recommended; Rinnai provides a Find a Rinnai PRO resource to locate qualified technicians.\u003c\/p\u003e","brand":"Rinnai","offers":[{"title":"Default Title","offer_id":46760052195547,"sku":"B0B57QZWGQ","price":805.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51BwcGyo6LL._AC_SL1500.jpg?v=1747587173","url":"https:\/\/gearmusthave.com\/products\/rinnai-re140in-gas-tankless-water-heater-up-to-5-3-gpm","provider":"GearMustHave","version":"1.0","type":"link"}