Schaefer Shade Pole Economy Inflation Blower - 148CFM - For Greenhouses Larger than 30x100

Continuous Double-Poly Inflation for Stable Greenhouse Insulation - Economy - 148CFM

A double-layer poly greenhouse covering only insulates well when the air space between the two layers stays inflated, and that cushion collapses the moment airflow stops. The Schaefer Shade Pole Inflation Blower runs continuously to hold that air gap, cutting heat loss through the covering and lowering the heating costs that come with it.

This Economy model at 148CFM uses the same shaded pole motor as the Standard version at a lower price point, sized for greenhouses larger than 30x100 feet.

Key Features & Benefits

• Continuous double-poly inflation — keeps the air cushion between two greenhouse poly layers filled, forming the thermal barrier that reduces heat loss.
• Shaded pole motor — built for continuous-duty operation across an entire heating season without frequent servicing.
• Forward curved wheel — moves air efficiently for steady, consistent inflation of the poly air gap.
• Open drip-proof motor construction — protects internal components from the humidity and condensation common in greenhouse environments.

Who Should Use This

Greenhouse operators running double-layer polyethylene covering, whether building a new structure or upgrading an existing inflation system, are the right fit for this blower.

About Pinnacle Climate Technologies

Pinnacle Climate Technologies formed in 2015 through the merger of Pinnacle Products International and Schaefer Ventilation, itself founded in 1960s Minnesota, and now manufactures the Schaefer line of ventilation fans and blowers from its Sauk Rapids, Minnesota facility.

Frequently Asked Questions

Why do double-layer poly greenhouses need a dedicated inflation blower?

Inflating the air space between the two poly layers creates a thermal insulating cushion that meaningfully cuts heat loss through the covering. Without continuous airflow, that cushion collapses and the covering loses much of its insulating value.

How do I choose between the 60CFM and 148CFM models?

Schaefer sizes the 60CFM blower for greenhouses under 30x100 feet and the 148CFM blower for greenhouses larger than that. Choosing the wrong capacity risks over- or under-inflating the poly air gap for your structure's size.

What is the difference between the Standard and Economy models?

Both use the same shaded pole motor technology and deliver comparable double-poly inflation performance; the Economy model is simply offered at a lower price point. The choice mainly comes down to budget rather than a functional trade-off.

Does this blower need to run continuously, and is a mounting bracket included?

Yes, inflation blowers typically run continuously through the heating season to keep the poly air cushion inflated, and the energy-efficient motor keeps operating costs down over that runtime. A mounting bracket is sold separately and is recommended for secure installation.