Rinnai Residential Tankless Water Heaters

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Rinnai Interior Units All Rinnai interior units utilize an exclusive cool-to-the-touch vent system that is sealed combustion and requires only one penetration through the roof or sidewall. Rinnai interior units can mount almost anywhere and can have a vent up to 41 feet long. They are designed to operate at outdoor temperatures as low as -30° F.	Rinnai Exterior Units Each Rinnai exterior units offer tremendous flexibility and safety. They are mounted on the exterior of your home so they require no floor space. While they are designed to operate to -30° F, care should be taken to properly install them in colder climates.