Greenhouse/High Tunnel getting too hot?  Add an exhaust sytem to your building that runs on thermostat to prevent over heating!  
Exhaust Fans
 
For more precise control over temperature and humidity, exhaust fans are an excellent addition to your greenhouse. These fans work by expelling warm, stale air and drawing in cooler, fresh air from outside. This creates a consistent airflow, ensuring that your greenhouse remains at an optimal temperature and humidity level.
 
Benefits of Exhaust Fans:
Temperature Regulation: Efficiently removes excess heat, maintaining a consistent temperature inside the greenhouse.
Humidity Control: Helps reduce humidity levels, which is crucial for preventing fungal diseases and promoting healthy plant growth.
Enhanced Air Circulation: Ensures even distribution of air, preventing stagnant conditions that can harm your plants.
 
Each exhaust package below allows for air turnover of once per minute (must be proper kit for building size):
 
Package 1-for kits up to 24' in length
One 24" exhaust fan
Two 30" interior, non-motorized louvres
One thermostat
Ships direct to property
$854
 
Package 2-for kits between 25'-48' in length
One 36" exhaust fan
Two 36" interior, non-motorized louvres
One thermostat
Ships direct to property
$1232
 
Package 3-for kits 49' and up in length
Two 36" exhaust fans
Three 36" interior, non-motorized louvres
One thermostat
Ships direct to property
$1994
 
Please note: Images included here are a variety of different size louvres and exhaust fans to represent all packages.