Polaris Anzen Spa Blower, 1-1/2 HP 220 Volt Bottom Mount

All blowers are equipped with a patented thermal protection device that prevents overheating from excessive back pressure or mechanical problems. An auto-reset feature automatically restarts the motor once it has cooled. The unique thermal valve also compensates for temporary rises in temperature so the blower motor is less likely to reach the shutoff point.

Review of Blower Sizing
Many problems can be attributed to improperly sized blowers. Accurately sizing the blower for the application is crucial for proper blower function. Damage caused by incorrect sizing is not covered under the warranty.

Several factors influence sizing:
Blower motors are cooled by air flowing over the motor. The amount of air required to prevent overheating is determined by the blower horsepower (HP), the system back pressure and the number and size of the air holes/jets in the spa. Airflow is measured in cubic feet per minute (CFM).  Different horsepower blowers require different levels of air flow to keep the motor cool. A higher HP motor requires more flow. System back pressure, measured in inches of water, is the sum of the forces restricting air flow over the blower motor and through the spa plumbing.

 Limiting forces include:
• Pipe diameter
• Number and type of elbows
• Length of run • Check valves
• Number of spa jets
• Size of spa jets
As back pressure increases, air flow decreases, reducing the
ability of the motor to stay within normal operating temperatures.
Maximum Back Pressure For Blowers
Bower HP Inches of Water
1.0 45
1.5 45
2.0 50
Airflow Ranges for Blowers (for 2" PVC)
Blower HP Min Airflow Max Airflow
1.0 30 SCFM 90 SFCM
1.5 45 SCFM 90 SFCM
2.0 50 SCFM 90 SFCM

Commercial Pool:

• Commercial pool specialist
• We have the best, most knowledgeable customer service of any pool company in the nation.
• We mix and blend many of our own chemicals.
• We are a commercial pool service company.
• We deliver bulk chemicals with our own trucks.
• We send out a 168 page commercial pool maintenance supply catalog nation wide.
• We have one of the largest commercial pool customer bases of any pool company in the nation.

Have a question about this product?
Call our customer service department at 1-877-842-4455.