Grow room setup.

I have a question i hope someone can help with. All of my cord i coiled up and wire tied to make things look more neat . Someone said told me that coiling the wires is not a good thing. Supposedly creates more resistance and more heat. Is this true and should i uncoil everything. My room is vented 3x7x8 room and heat is ok but right on the border line. Thanks in advance for any help with this.

Coiled wires do create more resistance and therefore more heat although how much more heat, I have no idea.

A coiled wire is longer than a straight wire that fits in the same space. Therefore it has higher resistance and so produces more heat from the same current flowing through it.

A coiled wire can't cool itself as efficiently as a straight wire because radiation from one part of the wire can impinge on another part of the wire instead of out into space; and because air flowing over one part of the wire might then flow past another part of the wire instead of away from the wire.

Do not sweat that at all.