How much heat is too much to be safe from police?

Ok i have a grow tent and it is a all LED grow but i am soon wanting to add a HPS however i hAve nowere for the hot air to exit besides outside my tent into my room. i am going to open windows to help, So how much watts in HPS to be safe from flirr and police?

stop worrying mate you can have a 1000w no problem just lesave the windows open and make sure u have got good exhaust and intake fans

I'd be more worried about the smell than how many watts you are using. like ckckck said, you could use a 1000w watt with no problem. Even a small grow is capable of stinking out an entire house.