U. S. Patents 4,502,467, Re.32,607 & 5,746,653
Other Patents Pending

GB-Series Combination "Attic-Based"
Solar Space Heater & Attic Ventilation System

The above parts photo shows some basic attic-to-home ceiling installation hardware. Not all parts shown are used or supplied. Not shown: 8" mating duct hardware. Shown: Ceiling air diffusers, filters, thermostats, flexible insulated duct & other hardware. The flexible attic air collector duct shown below is perforated to collect air evenly all along its length. It simply unfolds and is hung at the attic's peak. One end is attached to the GB Series air moving unit shown above and the other end is capped.

Collects or Distributes Air, Moisture and Heat
Evenly All Along Its Length!

Available in standard product lengths of 15 and 25 feet.
Also available in custom lengths.

Review Technical Discussion On Duct Technology

Provides controlled attic ventilation in the Winter and Summer and eliminates concerns about major structural damage caused by excess attic moisture and heat. PLUS - SAVES you money nine months of the year by reducing space heating costs in the Spring and Fall and reducing cooling costs in the Summer.

Operates Year Around

Winter
Eliminates excessive attic moisture
Prevents ice dams from forming

Spring
Provides free solar heat for home
Reduces home heating costs

Summer
Eliminates excessive attic heat
Reduces air conditioning costs

Fall
Provides free solar heat for home
Reduces home heating costs

Save Big $$

Provides controlled ventilation
Eliminates need for roof vents
Reduces burning of fossil fuels
Fully Automatic Operation
Easy To Install
Simple To Use
Fast Payback

Specifications

GB980 / GB495 / GB465

Air Mover Dimensions: 36"H x 14"W x 18"D
Minimum Attic Space Sq Ft: 800 / 400 / 400
Collection Duct Length Feet: 25 / 25 or 15 / 15
Maximum Rooms Heated: 6 / 4 / 4
Nominal Static Pressure Inches: .50 / .50 / .28
Nominal Operating CFM: 730 / 430 / 350
Free Air CFM: 980 / 495 / 465
Free Air RPM: 1050 / 1570 / 1530
Power Required Volts AC: 115 / 115 / 115
Power Required Hertz: 60 / 60 / 60
Full Load Amperage: 6.80 / 3.25 / 2.90
Nominal Rated HP: .25 / .10 / .07
Rated Watts: 455 / 225 / 175
Shaded Pole Motor: Yes / Yes / Yes
Overload Protection: Auto / Auto / Auto
Thermal Reset: Auto / Auto / Auto
Motor UL Listing: Yes / Yes / Yes
Motor CSA Listing: Yes / Yes / Yes
Internal Damper: Yes / Yes / Yes
Damper Defaults To Vent: Yes / Yes / Yes
Attic Temperature Sensing: Yes / Yes / Yes
Attic Humidity Sensing: Yes / Yes / Yes
House Heat Thermostat: Yes / Yes / Yes
Weight Lbs: 103 / 93 / 90
Shipping Weight Lbs: 138 / 123 / 115

Full Automatic Operation

Spring and Fall: When the attic temperature is greater that 70°F and the house thermostat creates a heat demand, warm solar heated attic air is collected and routed back into the house to reduce space heating costs. In the Summer: When the peak attic temperature exceeds 105°F and there is no house heat demand, the attic is automatically vented to remove excess heat and reduce air conditioning costs. During the Winter: When outside temperatures are less than 28°F and the attic humidity is greater than 35% RH, the attic is automatically vented to remove excess moisture and prevent ice dams. During winter humidity ventilation, humidity is constantly monitored. If humidity increases at temperatures below 28° F, ventilation ceases for 24 hours. Otherwise, ventilation will continue until the humidity level no longer declines. This takes into account winter storms that can temporarily increase humidity in the air. Above 28° F, ventilation continues steadily until 60° F. This is the temperature range where ice dams occur. Constant ventilation eliminates the temperature difference on the roof deck which eliminates ice dams from forming. As an option, winter ventilation can be turned on manually. When 60° F is reached, the system starts to allow the attic to accumulate heat. At 70° F, this heat is then made available to the house if it is requested. Once installed, the user only sets the inside house thermostat. It's that simple!