|
Yes, a 300W draw will cause less drag on the engine than the AC compressor - if your alternator can handle it. Expect to lose 1hp, where the AC might use 10 or more.
However, I think you'll find a 300W TEC to be grossly inadequate for your purposes. Did you get my point on the importance of blocking UV/IR rays at the windows? 1KW of heat per square meter is nothing to write off.
|