reply to norbert26
Re: 50 or 70 pint dehumidifier I assume that was due to size and efficiency. The electrical energy consumed by the dehumidifier will heat the space. How much depends on: how much energy is consumed by the dehumidifier, how large the room is, and are they sinks/sources of heat. In a basement ground temperature is usually lower then air so added heat will flow through the walls into the surrounding soil.
We have a unit in our basement and while the heat is noticeable while it is running on balance the lower humidity improves comfort. Unfortunately our basement is fairly well connected to the 1st floor so humidity levels are greatly influenced by weather conditions.