HVAC system

Usage:

1. ./hvac_server.py
2. ./hvac_client.py
3. ./set_temp.py <temp>

Inputs:

• temperature

Outputs:

• heater
• cooler

Logic:

• if heater is on, then increase temp by 1
• elif cooler is on, then decrease temp by 1
• if temp < 70, then turn heater on
• elif temp > 70, then turn cooler on