Looking For Ideas On How To Regulate The Temps In My Grow Room.

I am having a big issue in my grow room... My temps are all over the place, and I am not sure what to do.

I am using a 424 CFM inline exhaust fan to create ample circulation. I am pulling intake from the adjacent room which is heated during the winter and air cooled (central air) during the summer.

In order to regulate temperatures I use a combination of opening and closing the window and/or heat vent in the room that I am getting my intake from (I am in Michigan, and it's 10F-40F this time of year).

Basically if it is too warm I open the window wider and close the heat vent some, and when its too cold I close the wincow some and open the heat vent some.

As the temps change outside from 10-40F I have to continously check on my temps and adjust accordingly, which is a huge pain in the ass.

I am hoping you guys can give me some insights on what you do to control your temps.... I was thinking something like a fan controller with a thermostat (can someone recommend a cheap solution for this?) to turn the exhaust fan off when it's under a certain temp, and on when it starts getting too hot in the room.... and then add a window AC unit in the adjacent room to keep my intake temps down in the summer.

I kind of do the same thing. my cool tube stops the temp from going up much. that way I use the hvac to regulate temps. room stays 75-80 depending on where the temp is set.

stumps said:

I kind of do the same thing. my cool tube stops the temp from going up much. that way I use the hvac to regulate temps. room stays 75-80 depending on where the temp is set.

Click to expand...

I don't have cooltubes on my lights unfortunately, couldn't afford it when I bought them, and it will be a few months before I can afford it...

If I just had a simple solution for turning the fan on when it gets too hot in my grow room, it would solve the problem for me, but I can't afford a $200 controller at the moment.

Anyone have any ideas of how I can control my fan based on temps for cheaper?

I just found this on ebay, does anyone know how well these works? Or able to recommend anything cheaper that would do the same thing?

http://cgi.ebay.com/Thermostat-Thermostatic-Temp-Controller-for-Vortex-Fan_W0QQitemZ400080044874QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5d26a1034a

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Cruise Temp Cooling and Heating Thermostat ​

The Cruise Temp CT-EC Cooling and Heating Thermostat has a gas filled coil for amazing reliability.
It comes prewired for cooling, but can easily be switched to operate heating devices by simply switching one wire.
The Cruise Temp turns your cooling fan ON when the temperature reaches 4 degrees above set point, then turns it OFF at 3 degrees below set point.
The CT-EC features a combination plug and receptacle power cord design so you simply plug your fan into the thermostat's cord, set the dial and you're ready to grow.
Cruise Temp Cooling and Heating Thermostat is humidity resistant. Accuracy is +/- 2 degrees.
This control operates AC, exhaust fans, evaporative coolers, heaters or other temperature equipment by activating switches, motors, valves or pumps.

The combination plug/receptacle power cord receives power when the atmospheric temperature varies from your preset level. The sensor allows a 3° comfort zone between "on" and "off" functions. Simply plug the Temp H/C into a standard 120 volt outlet and plug your equipment into the combination outlet on the backside of the power plug. Set the dial to your setpoint and when that level is reached the control will either heat or cool depending on your mode and shut off, allowing longer life on your equiptment, while saving on your electricity bill.
Specifications:

• 120 Volt.
• NEMA 4X rated.
• 40 - 110 degree range.
• 15 amp maximum.
• UL listed.
• 3° F differential.
• Stainless Steel Sensing Coil
• Weatherproof enclosure
• 8' Piggy back cord

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Yea you got it man.

My friend made his own heat sensored fans from an intercooler system for cars.

Well I also found this for $30.40, has anyone ever used one of these?

http://www.qcsupply.com/qcsupply/browse/productDetailWithPicker.jsp?productId=10004&categoryId=&fromPage=search#detailTabs

Sunne Thermostat STF115








The Sunne thermostat is used for heating or cooling.


Sunne Thermostat STF115 In Stock

• Product #: 10004
• Price: $30.40

you could go to a hardware store and get a thermostat. Or I'm I missing something?

He's looking for a fan controller that operates on temperature input.

Oh wow, check this out...

Less than $35 shipped, and by the looks of it will do PRECISELY what I am looking to do, and is as simple as plugging it in, setting the temp, and plugging the inline fan into it!

http://www.amazon.com/WIN100-Heating...pr_product_top

WIN100 Heating & Cooling Programmable Outlet Thermostat


Price: $34.77 & this item ships for FREE with Super Saver Shipping.

Technical Details

• Separate programs for heating and cooling
• Setting range 45-degrees F to 90-degrees F
• For use with air conditioners and space heaters
• Energy Star Qualified
• Temporary temperature override

Product Description

From the Manufacturer

The Lux WIN 100 thermostat is for us with all mechanically controlled air conditioners and space heaters. Comfort; convenience; and quality – these are the reasons why so many consumers have welcomed Lux into their homes for almost 100 years. We are proud of our long tradition of providing homeowners with innovative products that make a difference in their lives. Moreover; we are honored that so many people have welcomed us into their lives and for so many years.



Product Description

The WIN100 is a Heating or Cooling Programmable Thermostat for Window Air Conditioners and Electric Space Heaters. It plugs into a normal household receptacle outlet. Electrical Rating is 120 volt, 15 Amp. Accurate Temperature Control while Saving Energy. Weekdays and Weekends can be programmed differently. Our unique, user-friendly Speed Dial ® allows a beginner to get expert results. The WIN100 is armchair programmable which means you can program it without it being plugged into the wall. Pre-set with a typical energy saving program, the innovative WIN100 also offers easy reprogramming to fit any lifestyle. ETL Approved, Energy Star Approved, Easy To Re-Program, 4 Periods per Day, On-Screen Programming, Temporary Override, Vacation Hold, 12 Hour Clock Only, Positive On/Off Switch, User Temperature Calibration, On-Screen Low Battery Indicator, Adjustable Cycle Rate, Fahrenheit or Celsius.

ns420 said:

Oh wow, check this out...

Less than $35 shipped, and by the looks of it will do PRECISELY what I am looking to do, and is as simple as plugging it in, setting the temp, and plugging the inline fan into it!

http://www.amazon.com/WIN100-Heating...pr_product_top

WIN100 Heating & Cooling Programmable Outlet Thermostat


Price: $34.77 & this item ships for FREE with Super Saver Shipping.

​

Technical Details

• Separate programs for heating and cooling
• Setting range 45-degrees F to 90-degrees F
• For use with air conditioners and space heaters
• Energy Star Qualified
• Temporary temperature override

Product Description

From the Manufacturer

The Lux WIN 100 thermostat is for us with all mechanically controlled air conditioners and space heaters. Comfort; convenience; and quality – these are the reasons why so many consumers have welcomed Lux into their homes for almost 100 years. We are proud of our long tradition of providing homeowners with innovative products that make a difference in their lives. Moreover; we are honored that so many people have welcomed us into their lives and for so many years.



Product Description

The WIN100 is a Heating or Cooling Programmable Thermostat for Window Air Conditioners and Electric Space Heaters. It plugs into a normal household receptacle outlet. Electrical Rating is 120 volt, 15 Amp. Accurate Temperature Control while Saving Energy. Weekdays and Weekends can be programmed differently. Our unique, user-friendly Speed Dial ® allows a beginner to get expert results. The WIN100 is armchair programmable which means you can program it without it being plugged into the wall. Pre-set with a typical energy saving program, the innovative WIN100 also offers easy reprogramming to fit any lifestyle. ETL Approved, Energy Star Approved, Easy To Re-Program, 4 Periods per Day, On-Screen Programming, Temporary Override, Vacation Hold, 12 Hour Clock Only, Positive On/Off Switch, User Temperature Calibration, On-Screen Low Battery Indicator, Adjustable Cycle Rate, Fahrenheit or Celsius.

Click to expand...

Are you planning on using this for your inline fan, your main exhaust?

if you just want a thermostat that controlls an inline or any type of exaust/intake fan, than this one is cheap and would work for what you want..

http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?jspStoreDir=hdus&catalogId=10053&productId=100028788&navFlow=3&keyword=plug+in+thermostat&langId=-1&searchRedirect=plug+in+thermostat&storeId=10051&endecaDataBean=com.homedepot.sa.el.wc.integration.endeca.EndecaDataBean@3d13d14d&ddkey=Search

oh and you can buy it at home depot...no need to order.

hey man. just came upon your thread, I live in upstate ny and am having same troubles! how did it work for you? thanks