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Fall Savings Honeywell Modutrol Motors Up To 70% OFF List Price
Free Shipping on Orders Over $300


ecobee Announces Beta Launch of Home IQ: Providing Customers’
with Personalized Insights into their Energy Savings

ecobee – “ecobee’s Home IQ™ takes thousands of data points, automatically collected through a customer’s ecobee thermostat, and uses advanced math and physics to create a model that learns about our customers’ home, and provides them with insights into their home’s energy performance,” Click to read the rest of the article.

U.S. Natural Gas Rises on Outlook for Colder Weather

Forbes – Natural gas futures advanced for the seventh time in eight days as an expected blast of cold air signaled stronger demand for heating fuel. 
Click to read the rest of the article.

How to Engineer Systems in Mixed-Use Buildings:
HVAC and Controls

Consulting Specifying Engineer – When working on mixed-use buildings, engineers must address many needs in one building. This reviews aspects of HVAC, automation and controls, and energy efficiency.  Click to read the rest of the article.
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What Our Customers Are Saying About Us...
"Wow! I could not believe how quickly my items were shipped. Item exactly as described, well packed, and quickly expedited. Thank you, Controls Central,
I will definitely be doing business with you again!"

Read More Ratings From Controls Central Customers

New Product Announcement


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Enclosed EnOcean® Enabled Wireless Relay Transceivers with Dry Contact Input; 20 Amp; 120 Vac, 208 Vac, 240 Vac, 277 Vac or 24 Vac/dc Power

Network Compatibility, Inter-Operability:
Functions with Many EnOcean® Enabled Products.
  • Includes dry contact input for sensor feedback
  • Connects directly to controller’s output for
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  • 20 Amp load control
  • Range of 50-150 feet
  • Repeat capability
Functional Devices Video Applications include:
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  • Remote outbuildings
  • Building additions
  • Any application where you cannot sacrifice the
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  • Made in the USA


Honeywell IV Modutrol Motors

Let Our Technical Support Team Help You Find The Right Compressor for Your Job!

Prices subject to change without notice.

Weather Pictures

Amazing and Unusual Weather Phenomena

Find more interesting facts at

The science of weather is a fascinating one; but even more so are the flukes and irregularities that can occur within our world. This is a list of 20 of the most amazing and unusual of those anomalies.
  1. Moon bows:  A rainbow is caused by the Sun shining on moisture droplets, most commonly in a post-rain atmosphere. A moon bow is much rarer, only seen at night when the moon is low and full to almost full. One popular place to see moon bows is at Cumberland Falls in Kentucky.
  2. Mirages: Mirages occur when light is refracted to produce an image of an object or the sky where it is not. It is most commonly seen on hot surfaces, such as the pavement or a desert.
  3. Haloes: Like rainbows, haloes are formed around the Sun due to moisture (in this case ice crystals) being refracted from the Sun’s rays in the upper atmosphere. Sometimes two or more areas of the circle or arcs surrounding the Sun will be brighter, forming what are called Sun Dogs. Haloes can also form around the Moon, and occasionally around the brighter stars and planets like Venus.
  4. Belt of Venus: The belt of Venus is a phenomenon that occurs during dusty evenings when a band of pinkish or brownish sky will appear between the sky and the horizon.
  5. Noctilucent Clouds Noctilucent clouds are atmospherically high clouds that refract light at dusk when the Sun has already set, illuminating the sky with no seeming light source.
  6. Aurora Borealis: Also known in the southern hemisphere as the Aurora Australis, the Aurora Borealis are charged particles from the Sun that have reached the Earth’s upper atmosphere and become excited. They are more typically seen closer to the poles and during the equinoxes of the year.
  7. Colored Moons: Due to different atmospheric issues, the moon will occasionally appear tinged with a color, such as blue, orange, or red. Excess smoke, dust, and eclipses can cause the moon to change color.
  8. Mammatus Clouds: These odd-shaped clouds are often associated with a storm front, especially one involving a thunderstorm. It’s not completely understood how they form.
  9. St Elmo’s Fire: This weather phenomenon is luminous plasma that appears like fire on objects, such as the masts of ships or lightning rods, in an area that is electrically charged during a thunderstorm. This occurrence was named the after St Elmo, the patron saint of sailors.
  10. Fire whirls: A fire whirl is either a tornado spinning too close to a forest fire or a whirl created from too much heat in the area.
  11. Pyrocumulus Clouds: Another heat related phenomenon, pyrocumulus clouds form from the fast and intense heating of an area to create convecture, which in turn creates a cumulous cloud. Volcanoes, forest fires, and nuclear explosion (in the form of a mushroom cloud) are all prime causes of pyrocumulus clouds.
  12. Sun Pillars: Sun Pillars occur when the setting sun reflects off high, icy clouds at different layers. It creates a pillar of light that reaches high into the sky. It is also possible to see moon pillars.
  13. Diamond Dust: Linked closely to haloes, diamond dust is a fog made of frozen droplets.
  14. Non-aqueous Rain: Rare and yet real, cases exist of rains of animals instead of water. This has occurred occasionally throughout history, from the Biblical times up to recent history. Meteorologists are still unsure of the cause.
  15. Virga: Virga is when ice crystals in clouds fall, but evaporate before hitting the ground. They appear as trails from clouds reaching for the surface, sometimes giving the cloud a jellyfish-like appearance.
  16. Katabatic Winds: These are winds that carry dense air from a higher elevation to a lower elevation due to gravity. They are known locally as the Santa Ana (southern California), the Mistral (Mediterranean), the Bora (the Adriatic Sea), Oroshi (Japan), Pitaraq (Greenland), and the Williwaw (Tierra del Fuego). The Williwaw and winds traveling over the Antarctic are particularly hazardous, blowing over 100 knots at times.
  17. Fire Rainbow: A fire rainbow is an extremely rare phenomenon that occurs only when the sun is high allowing its light to pass through high-altitude cirrus clouds with a high content of ice crystals.
  18. Green Ray: Also known as the Green Flash. This occurs very briefly before total sunset and after sunrise. It appears as a green flash above the sun that lasts very briefly, generally only a few moments. It is caused by refraction of light in the atmosphere.
  19. Ball Lightning: This is a very rare phenomenon that involves ball-shaped lightning that moves much slower than normal lightning. It has been reported to be as large as eight feet in diameter and can cause great damage. There are reports of ball lightning destroying whole buildings.
  20. Sprites, Jets, and Elves: All refer to phenomena that occur in the upper atmosphere in the regions around thunderstorms. They appear as cones, glows and discharges. They were only discovered last century, because of their placement and their very brief life-span (they last less than a second).



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