VEVOR Greenhouse Heater, 1500W Fast Heating with Overheat Protection, 2-Speed Setting Small Grow Tent Heater, Electric Portable Heater Fan for Green House, Flower Room, Workplace, IP24 Waterproof

It comes with a cord, it is 110V with a US plug.

Hello. The best way to contact our VEVOR Customer Service team is to choose Contact Us on the official website. This method allows you to select the nature of your request (like Product Support) on an online form, which ensures your message is routed directly to the correct email team for the fastest and most reliable response.

While the product description doesn't mention anything about noise level, customers consistently state that it is quiet enough for greenhouse use.

I did not find any relevant information about odors produced when operating the heater in the customer reviews.

While the product description doesn't mention anything about the cooling mode's effectiveness, customers mostly have positive things to say about it. They mention that the cooling mode works well and is quiet.