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20E 29E 45WN

Onex/Cosmogas Heating System Replacement Parts

Embassy Onex heating systems and boilers exemplify the elite craftsmanship of their Italian parent company, Cosmogas. This heating system manufacturing powerhouse has been a mainstay in the industry for over 50 years and counting. In fact, their machines are so well made, many of them outlast certain parts within their system. Fortunately, you can find all the Onex/Cosmogas heating system replacement parts that you need to keep your home or business warm and comfortable right here on our easy-to-use website.

From Embassy Onex/Cosmogas control boards and heat exchangers to ignition modules -- we have you covered. Our comprehensive inventory of Onex/Cosmogas heating system parts also includes integrated circuit pumps, multifunction selectors and safety reliefs as well as odds-and-ends like precise gaskets, valves, washers and more.

We have spare parts in stock for popular Onex/Cosmogas boilers and heating systems, including the 20E, 29E and 45WN models. To easily find your part, type a part name or part number into the search bar here on our website. If you’re still unable to find your part, our friendly and knowledgeable customer service team is available to provide you with personal assistance.


Struggling to Find Your Part? We’re Here to Help You.

Call us at (800) 536-1582, email helpdesk@parts4heating.com or live chat with a member of our team here on our website to begin exploring options for Onex/Cosmogas heating system replacement parts.

Our customer service team is available Monday through Friday, 8 am – 4 pm EST.