American Standard heating and cooling Registration - https://www.americanstandardair.com/owner-support/warranty-and-registration.html

Fujitsu ductless heating and cooling Registration --  https://contractors.fujitsugeneral.com/registration/

Navien Tankless Water Heater Registration -- ​http://us.navien.com/ProductRegistration/Page1/Create

Bradford White Water Heater Registration -- https://warrantycenter.bradfordwhite.com/

Rheem heat pump water heater registration --​https://www.rheem.com/warranties/
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Bosch Variable speed Heat pump registration -- ​https://boschprohvac.com/consumers/product-registration/

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Aprilaire Media Filter, Humidifier, and Thermostat Registration --​http://www.aprilaire.com/owner-center/owner-center/warranty-registration

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Second Wind UV Air Purification Registration -- ​http://www.secondwindairpurifier.com/warrantyregistration.htm