Factory Photos

Arial View of the Facility

Greetings one and all

I am Harmon Davidson the Founding Director of Green Air Products Inc. and I welcome you to our facility. I hope you find the photos interesting and that it gives you a better understanding of our company and the people who make it all possible. I am very proud of what my crew has managed to accomplished through the many years.

Not a typical company setting because it grew out of a backyard business into the corporate giant (ha ha) that it is today. I can't show you every nook and cranny because this place is a maze of assorted work spaces. Enjoy the tour..................





This is the basic look of the place from the front folks. Very subdued and functional with no signs or anything to distract from the beautiful country setting. The office entrance in front of the larger production building which you cannot actually see directly attached behind. The warehouse on the right is attached by a large hallway between the two buildings. 


Marty is the General Manager of all operations and pretty much calls the shots on everything that goes on during the course of daily operations.


This is the front office and reception area. Marina will greet you as you come in and make sure you get the attention you need. Cheryl does a lot of the office tasks and paper handling for us.

Here is the sales office where your orders get called in. Also the accounting, purchasing and information center activities take place in here.

This is Buzz right outside his office is his tech bench where he evaluates products and returns to determine what the problem might be.


  This is the master control center where Bob builds the MCC-1's and other such controllers. It was Bob and Harmon who designed the first controllers almost 20 years ago in basically this same spot. It is no wonder our controllers hardly ever fail when the same technician who designed them has been assembling them for so long.



   The CO2 generator shop does nothing but pump those babies out all day every day. This area is well laid out to start at one end assembling the components down the line and into the box as a finished product.


Rick in screen printing where the name goes on the black boxes.

Here is Kenny the burner welder and general fabrication man seated at the TIG welder in the machine shop. 


The main warehouse in Oregon which is primarily used to inventory components for the manufacture of our controllers and finished product waiting to go to our other warehouses.

This is Ryan our Plant Sciences Tech in the lab checking pH or something. Speaking of pH, Scotty will make buffers and calibration standards in the lab and take them downstairs to the solutions bottling bench where he boxes them up.

Scotty has been blending the Genesis Formula specialty hydroponic nutrient for more years then I can remember. Here we see him filling bottles from the mixing barrel. The Genesis Formula is blended as a saturated paste rather then a liquid so the gear motor mixing wands must keep the finished product moving while dispensing to assure a consistent quality.

It is a pretty low tech system but it never breaks down and it never screws up. Simplicity can be a wonderful thing.



    The lunch room out by the pond. Does this look like your lunch room at work?

Hydroponic Research Greenhouse #1

Greenhouse #1 is divided into two separate enclosures, front and rear. This allows us to do side by side comparisons of variables such as CO2 enrichment levels. A variety of hydroponic systems are being used to determine the effectiveness of different nutrient formulations on growth rate and the effects of environmental influences on plant stress tolerances.


Greenhouse #1 (rear)

On the right you can see just the ends of typical NFT gutters but the forefront system is unusual because the roots grow sandwiched between two layers of plastic film for all practical purposes lying directly on the floor. Standard 2x4 studs are used as edge frames and as dividers to form wide channels lengthwise down the row. Each plants roots are split into side by side channels, one irrigated with nutrients and the other just clear water. As well, this unique feature allows for a number of other irrigation timing and solution variables to be tested. Solutions originate from any number of reservoirs and run down the channels to be collected in catchment tanks buried in the ground at the far end. This simple inexpensive system worked remarkably well even in just a single trough configuration.


Greenhouse #2

Frapa Plastique Aero Tunnel System

Lettuce being grown in aeroponic troughs using high pressure misting nozzels. These plants are 26 days old and ready to harvest.

Greenhouse #3


Our commercial aeroponic greenhouse with 26 troughs each 20 feet long, 18 inches wide and 12 inches deep. Fourteen plant sites in each row suitable for large plants such as tomatoes or cucumbers. The troughs have high pressure misting nozzles spaced continuously lengthwise within each channel. The nutrient solution originates at the left end of the gully and flows to the recovery gutter where it is directed to a vinyl lined concrete catchment tank built into the floor. From there it is pumped back into a bank of four 500 gallon nutrient reservoirs shown in the photo on the right. The tanks can be split to contain a component mix of the finished formula to enable nutrient variations depending on typical daily requirements. The cabinet in the foreground houses the computer that controls all systems within the greenhouse to manage nutrient, lighting and environmental factors. The aluminum trellis provides a superstructure to the support plants as they grow and bear fruit.


Genesis Lab procedures

Left: Preparation for digestion of dried plant tissues to determine the nutrient element content of the leaf or petiole.

Below: Atomic Absorption Spectroscopy (AAS) is used to run spent nutrient solution samples to determine what minerals have been assimilated by the plants.


Green Air Products is certainly one of the keystones of the hobby hydroponic industry serving nearly 20 years as a primary manufacturer and supplier of the staples of this market. Specializing in such products as environment and atmospheric controls. Among other things, Green Air Products pioneered the field of synchronized climate and CO2 enrichment, designing the first complete and comprehensive configuration of interconnecting controllers able to coordinate all of the essential aspects of environmental management. Making available to the serious hobbyist the tools they needed to accomplish a well-balanced and optimum plant zone environment. To this day it is hard to find a hydroponic store that does not feature Green Air Products as their primary line of atmospheric controls.

Green Air Products continues to develop products that were unique and specialized to this industry. We developed such familiar products as the air cooled lamp canopy and the infrared CO2 monitor. It was eventually inevitable that with our posture in the industry, we would become a logical choice for other manufacturers to utilize as a distributor for their products. We began to offer fertilizers and solutions, analytical meters and many other main line products and services. Today we sell hundreds of products that are applicable to this market and we have beneficial alliances with other major players in the hydroponic industry to make our resources stronger and more diverse. Green Air Products is the most recognized name in this specialty industry and our products can be found in nearly every hydroponic shop throughout the U.S. and Canada. Customer service and satisfaction is the measure of our achievements and quality products are the trademark of our success.

Harmon Davidson, is the founding director of Green Air Products Inc. and a 20 year veteran of the hydroponic industry. Harmon is a plant physiologist and agricultural chemist specializing in plant nutrition, atmospheric control and CO2 enrichment. Harmon studied botany, horticulture and plant sciences in college, but soon realized that he was not going to learn the types of skills that he wanted with traditional agricultural training, so he set forth to discover the field of hydroponics on his own. In the early 80ís Harmon devoted most of his time to his lab and greenhouses, researching plant environmental and nutritional responses with hydroponic techniques, which led to the development of their control products and the Genesis Formula specialty nutrients which remains a popular brand name to this day.

Located on 15 acres of farmland near Portland Oregon, this original location remains the primary manufacturing facility and main office complex. Included on this parcel are commercial size research greenhouses and a complete analytical lab. Most of the equipment and controls, as well as The Genesis Formula plant nutrients, amendments and solutions, are manufactured here at this facility.

Back To Product Page