I have a 1900 sq ft 2 story house. Just built last year. I am buying a Enviro Omega this month to put in my living room. It states it covers 2500 sqft. I have acouple questions before i make the final leap. I live up state near Amsterdam, NY. 1. Will it be too hot in the living room? 2. Will it effect any electronics or leather furniture in the living room? 3. What are the chances it heats the whole house? 4. If it just heats the first floor will it still save me money in the long run? 5. Will I need to get a humidifier? 6. Should i install insulation to my cellar ceiling.