Fans, Filters & Environmental Control

fans, filters & environmental control — pre-owned

1,072listings

Browse 1,072 fans, filters & environmental control — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

Vortex Powerfans 8 Inch Inline Duct Fan Strong Airflow Ventilation
UsedBuy It Now

Vortex Powerfans 8 Inch Inline Duct Fan Strong Airflow Ventilation

Vortex Powerfans 8 inch inline duct fan. Works great, strong airflow. Clean condition. Perfect for grow tents, garage, workshop or ventilation. Standard plug included. See photos for details.

$125.00
See listingCosta Mesa, US
bushik
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99.7%Excellent· 397
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AC Infinity Cloudline Pro T6 6” Inline Duct Fan Kit Controller AI-CLT6 HVAC
UsedBuy It NowBest Offer

AC Infinity Cloudline Pro T6 6” Inline Duct Fan Kit Controller AI-CLT6 HVAC

💨 AC Infinity Cloudline Pro T6. 📏 6” inline duct fan system.

$200.00
See listingUpland, US
kali.j.market
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99.9%Excellent· 2.2k
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Sentinel Vcg-6 LP HA 2 Burner Propane CO2 Generator with Regulator
UsedBuy It NowBest Offer

Sentinel Vcg-6 LP HA 2 Burner Propane CO2 Generator with Regulator

The Sentinel Vcg-6 LP HA 2 Burner Propane CO2 Generator with Regulator is a high-quality digital control system that operates on electric power. This CO2 generator, made of durable metal materials in a sleek white color, is designed for indoor use. Perfect for hydroponics enthusiasts looking to enhance their air ventilation and extraction systems, this model from Sentinel ensures efficient and reliable performance. With its dual burner design and regulator included, this CO2 generator is a must-have for maintaining optimal growing conditions in your garden or indoor space.

$199.87
Free ShippingVancouver, US
flippingforfreedom
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99.4%Excellent· 794
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Can Lite 8” opening x  27” tall Carbon Air Filter  see photos.
UsedBuy It NowBest Offer

Can Lite 8” opening x 27” tall Carbon Air Filter see photos.

The Can-Lite 8” x 27” Carbon Air Filter is a high-quality filtration solution designed for indoor environments, particularly in Hydroponics setups. With its activated carbon filter media, this filter effectively captures odors and contaminants, providing clean and fresh air for your space. The Can-Lite brand ensures reliability and efficiency in filtering out impurities, making it an essential component for maintaining a healthy indoor atmosphere.

$99.00
+$95.00Toms River, US
thesuitguy113
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99.9%Excellent· 3.9k
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Coppus 20 inch Air-Driven Reaction Fan 11,000 CFM, Model  RF-20, Good Condition
UsedBuy It Now

Coppus 20 inch Air-Driven Reaction Fan 11,000 CFM, Model RF-20, Good Condition

It is model RF-20. Rugged, cast aluminum housing and fan blade make these fans ideal for hazardous locations and demanding ventilation projects. Spark-resistant, cast-aluminum housing and fan blade.

$79.99
See listingMchenry, US
houseguy1
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100.0%Excellent· 4.0k
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Large Odorsok Odor Sock Carbon Activated Air Filter Sok Indoor Big
-15%
UsedBuy It NowBest Offer

Large Odorsok Odor Sock Carbon Activated Air Filter Sok Indoor Big

$135.97$159.97-15%

You save $24.00

Free ShippingLakeside, US
rmontgomery0119
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99.6%Excellent· 5.6k
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Titan Controls Ares 4 LP Liquid Propane CO2 Generator 4 Burner
UsedBuy It NowBest Offer

Titan Controls Ares 4 LP Liquid Propane CO2 Generator 4 Burner

The Titan Controls Ares 4 LP Liquid Propane CO2 Generator 4 Burner is a high-quality CO2 generator designed for use in whole rooms. With a power source of electricity and a voltage of 120V, this generator is efficient and reliable. Made by the trusted brand Titan and manufactured in the United States, this white CO2 generator is perfect for controlling the carbon dioxide levels in your home or garden, making it a valuable addition to your climate control system. Works perfectly.

$126.65
See listingWillits, US
gemsvaluevault
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98.5%Excellent· 89
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C.A.P. AIR-3DN Day/Night Temperature & C02 Controller - Horticulture Hydro READ
For parts or not workingBuy It NowBest Offer

C.A.P. AIR-3DN Day/Night Temperature & C02 Controller - Horticulture Hydro READ

This unit is being sold AS-IS for parts/repair. It has not been tested in any way and does not have power wired to it. It has wear from age, storage, and use. Please view photos closely before purchasing to fully judge this item.

$29.95
+$8.55North Canton, US
harbourthrifts_2
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99.9%Excellent· 2.8k
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Douglas Blaster Pressure Blower 500 cfm
UsedBuy It NowBest Offer

Douglas Blaster Pressure Blower 500 cfm

The Douglas Blaster Pressure Blower 500 cfm is a high-quality centrifugal blower designed for HVAC and refrigeration systems.

$145.00
See listingJacksonville, US
kreativekollect1
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99.9%Excellent· 2.7k
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HAN'KITCHEN'LON'S Lon S Bathroom Exhaust Fan, 200-230 CFM, 1.5 Sones, Stainless
-81%
UsedBuy It Now

HAN'KITCHEN'LON'S Lon S Bathroom Exhaust Fan, 200-230 CFM, 1.5 Sones, Stainless

This bathroom ceiling mount ventilation fan by HAN Kitchen Lon S is engineered to provide efficient and quiet ventilation for humid bathrooms or continuous air circulation needs. This energy-saving ventilation solution enhances bathroom comfort while promoting healthier air circulation.

$27.00$142.99-81%

You save $115.99

Free ShippingRogers, US
vipoutlet
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96.5%Good· 755.1k
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HyperFan 8" MixFlow Inline Duct Fan 75W Grow Ventilation with Controller
TOP
UsedBuy It NowBest Offer

HyperFan 8" MixFlow Inline Duct Fan 75W Grow Ventilation with Controller

Powers on and is in working condition.

$95.99$119.99-20%

You save $24.00

Free ShippingChelsea, US
theestatekingsTOP
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99.6%Excellent· 19.1k
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Titan Controls Atlas 3 Day/Night CO2 Monitor Controller 702608 TESTED
UsedBuy It Now

Titan Controls Atlas 3 Day/Night CO2 Monitor Controller 702608 TESTED

Monitor may show minor wear(as pictured)but in great condition with NO broken or missing parts and have been tested.

$114.95
+$9.95Huntington Beach, US
surfcitysavings
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99.4%Excellent· 17.9k
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Titan Controls Zephyr 1 Day & Night Thermostat Temp Controller Cool Heat Indoor
UsedBuy It NowBest Offer

Titan Controls Zephyr 1 Day & Night Thermostat Temp Controller Cool Heat Indoor

For sale is a Titan Controls, Model # 702630, Zephyr 1, Day & Night Thermostat Temperature Controller. Controls Cooling or Heating. Great for Indoor grow rooms. 120v, 15 Amps, 6ft temperature probe. It is pre-owned and lightly used. May have marks or minor scratches. Tested and works. Please see all photos and ask any questions before bidding. No returns or refunds. Thanks for looking.

$36.50
+$6.50Weaverville, US
rdown65
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100.0%Excellent· 796
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Hyperfan Stealth 6" Silenced Inline Duct Grow Fan, NO Speed Controller. Used
UsedBuy It NowBest Offer

Hyperfan Stealth 6" Silenced Inline Duct Grow Fan, NO Speed Controller. Used

*No original speed controller, lost in a move.* The Hyperfan Stealth 6" Silenced Inline Duct Grow Fan is a powerful and efficient ventilation system designed for indoor use. With a quiet operation, this fan provides effective exhaust ventilation while keeping noise levels minimal. Made of durable aluminum material, this corded fan with a 60 Hz power frequency is suitable for hydroponics setups and can be easily hung from the ceiling. The circular vent style and 6-inch diameter make it ideal for circulating air in small to medium-sized spaces, making it a valuable addition to any home or garden. Unit is used but still works great. *Check my other listings, more equipment available not listed, and msg with any questions.* Thanks for looking

$79.99
+$30.00Ballston Spa, US
000_wilson
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100.0%Excellent· 156
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Growtronix Network Interface Module v2
UsedBuy It NowBest Offer

Growtronix Network Interface Module v2

Growtronix Interface Module.

$1000.00
Free ShippingKennewick, US
cardsandcomputers
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96.0%Good· 64
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Vortex S-line S-600 6" Inline Fan 340 CFM Quiet Energy Saving Ceiling Wall Mount
UsedBuy It NowBest Offer

Vortex S-line S-600 6" Inline Fan 340 CFM Quiet Energy Saving Ceiling Wall Mount

Vortex S-line S-600 6" Inline Fan 340 CFM Quiet Energy Saving Ceiling Wall Mount

$75.00
See listingTulsa, US
deal_863
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100.0%Excellent· 18
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AC Infinity AC-DCFC Carbon Duct Filter 6" Hydroponics Grow Room Lot of 2 - RK034
TOP
UsedBuy It NowBest Offer

AC Infinity AC-DCFC Carbon Duct Filter 6" Hydroponics Grow Room Lot of 2 - RK034

6" Hydroponics Grow Room. AC Infinity AC-DCFC Carbon Duct Filter. as displayed in the photos.

$40.00
See listingChicago, US
kedziekoinsTOP
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100.0%Excellent· 74.8k
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Sentinel CPPM-4 CO2 PPM Controller CPPM-4BNSR-A & CO2 Regulator Solenoid Hydro
UsedBuy It NowBest Offer

Sentinel CPPM-4 CO2 PPM Controller CPPM-4BNSR-A & CO2 Regulator Solenoid Hydro

For sale is a used Sentinel CPPM-4, CO2 PPM Controller. Model CPPM-4BNSR-A. Comes with the CO2 regulator and solenoid. It is pre-owned and used for about 1-1/2 years. Fully works, tested and just re-calibrated. Is faded from grow lights and has marks, paint splatter, dust, water spots, etc. Please see all photos for a better description and ask any questions before bidding. As-Is. No returns or refunds. Thanks for looking.

$148.50
+$21.50Weaverville, US
rdown65
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100.0%Excellent· 796
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Can-Fan Max Fan 12" Model EL 012 E2 01 - 115V, 60Hz, 490W, 6.3A
UsedBuy It NowBest Offer

Can-Fan Max Fan 12" Model EL 012 E2 01 - 115V, 60Hz, 490W, 6.3A

$349.99
Free ShippingApollo, US
wetplants2p3b
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100.0%Excellent· 6.7k
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Hurricane Supreme 12" 90 Degree Oscillating 3 Speed Wall Mounted Fan,White(Used)
-39%
UsedBuy It Now

Hurricane Supreme 12" 90 Degree Oscillating 3 Speed Wall Mounted Fan,White(Used)

Classic wall fan features 90-degree oscillating design with a powerful, 3-speed cooling breeze ideal for compact, indoor use. Adjustable tilt for up and down fan direction allows you to easily change the fan’s position to allow for direct or indirect airflow.

$27.02$43.99-39%

You save $16.97

Free ShippingLincoln, US
spreetail-deals
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98.4%Excellent· 322.7k
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AC INFINITY UIS to UIS DAISY CHAIN - AC-ADS3
UsedBuy It NowBest Offer

AC INFINITY UIS to UIS DAISY CHAIN - AC-ADS3

The AC INFINITY UIS DAISY CHAIN - AC-ADS3 | EXTRA UIS CHORD INCLUDED!

$15.00
Free ShippingSterling, US
l_nox24
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100.0%Excellent· 20
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Can-Fan Max-Fan Pro Series 8" 863 CFM, Used
UsedBuy It NowBest Offer

Can-Fan Max-Fan Pro Series 8" 863 CFM, Used

If it is not pictured, it is not included.

$95.00
See listingHyattsville, US
communityforklift
Feedback
100.0%Excellent· 4.8k
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iDEALair 8" Inline Duct Fan 745 CFM w/ Speed Controller 110V Tested Working
UsedBuy It NowBest Offer

iDEALair 8" Inline Duct Fan 745 CFM w/ Speed Controller 110V Tested Working

iDEALair 8" Inline Duct Fan with Speed Controller. • Airflow: 745 CFM • Voltage: 110–120V • Includes variable speed controller • Fully functional – tested and working • Good used condition Fan runs strong and quiet. Great for ventilation, grow tents, workshops, or HVAC setups. Condition: Used item with normal signs of use (light dust/scratches). Please see photos for details. What’s included: • Inline fan • Speed controller with power cord Shipping: Ships fast and securely packaged. Sold as-is. Feel free to message with any questions.

$79.00
See listingCosta Mesa, US
bushik
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99.7%Excellent· 397
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phresh filter Carbon Filter With Cover 100% Australian RC-48.
UsedBuy It Now

phresh filter Carbon Filter With Cover 100% Australian RC-48.

I dont know much about this so i dont know if this is new or used. this is a estate find.

$24.99
See listingHuntertown, US
slimpickens68
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99.7%Excellent· 6.7k
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CLOUDLINE T10 Inline Booster Duct Fan 10” Cooling Vent Exhaust Grow Tent AICLT10
UsedBuy It Now

CLOUDLINE T10 Inline Booster Duct Fan 10” Cooling Vent Exhaust Grow Tent AICLT10

CLOUDLINE T10 Inline Booster Duct Fan 10” Cooling Vent Exhaust Grow Tent AICLT10 AC infinity 10” inline fan, used, but works great. Moves a ton of air.

$240.00
+$20.00Minot, US
45coltjames
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100.0%Excellent· 1.2k
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10 inch Can-Fan Max-Fan In-Line Duct/exhaust fan for grow tent or indoor growing
UsedBuy It Now

10 inch Can-Fan Max-Fan In-Line Duct/exhaust fan for grow tent or indoor growing

The Can Fan Max-Fan 10" Exhaust Fan is a high-quality fan that is perfect for improving ventilation in your indoor growing space. Can Fan Max-Fan 10" Exhaust Fan is a powerful and efficient fan suitable for indoor use, particularly in grow tents or for indoor growing.

$59.00
Free ShippingColorado Springs, US
davi.lian
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100.0%Excellent· 279
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AutoPilot CO2 Monitor & Controller APC8200 Remote Sensor APC 8200 Auto Pilot AC
UsedBuy It Now

AutoPilot CO2 Monitor & Controller APC8200 Remote Sensor APC 8200 Auto Pilot AC

Item is tested and it works great The AutoPilot CO2 Monitor & Controller APC8200 with Remote Sensor is a high-tech solution for monitoring and controlling CO2 levels in your home or garden. This sophisticated device allows you to easily adjust and maintain the optimal CO2 levels for your indoor plants, ensuring healthy growth and maximum efficiency in your hydroponics setup. The remote sensor provides added convenience for monitoring CO2 levels from a distance, making it a must-have tool for any serious gardener or hydroponics enthusiast looking to improve the air quality in their growing environment.

$139.99
Free ShippingHouston, US
ustechcentral
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100.0%Excellent· 3.3k
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Autopilot APE4200 Eclipse F90 Master Environmental Controller W/ Co2 Sensor.
UsedBuy It NowBest Offer

Autopilot APE4200 Eclipse F90 Master Environmental Controller W/ Co2 Sensor.

Great condition Tested and works Comes with what’s in the pictures Free shipping

$169.99
Free ShippingYucca Valley, US
treasurehunthaven
Feedback
99.6%Excellent· 1.2k
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Titan Controls Ares 2NG Burner Ng Co2 Generator
UsedBuy It NowBest Offer

Titan Controls Ares 2NG Burner Ng Co2 Generator

As is, no cords, but works and is pre owned.

$133.18
See listingGranada Hills, US
manssle_23
Feedback
100.0%Excellent· 9
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Titan Controls Atlas 3 Day/Night CO2 Monitor / Controller 702608
UsedBuy It NowBest Offer

Titan Controls Atlas 3 Day/Night CO2 Monitor / Controller 702608

The Titan Controls Atlas 3 Day/Night CO2 Monitor / Controller 702608 is a high-quality CO2 controller designed for use in hydroponics and other indoor gardening applications. With a sleek black design and efficient electrostatic filtration technology, this unit offers reliable monitoring and control of CO2 levels in your growing environment. It is Energy Star rated and operates on 120V voltage, making it a cost-effective and convenient choice for maintaining optimal air quality in your home or garden. The compact size of 8 inches in height and weight of 1lb 6oz make it easy to handle and transport, while the model Atlas 3 ensures top-notch performance in 2020 and beyond. WORKS TESTED NO POWER CABLE INCLUDED . Bin- A1

$64.99
See listingGranada Hills, US
vaultedspace
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Can Fan Max Fan 14” 1700 CFM Used
UsedBuy It NowBest Offer

Can Fan Max Fan 14” 1700 CFM Used

The Can-Fan Max Fan is a 14-inch circular electric fan with a high velocity output of 1700 CFM, making it ideal for ventilation and exhaust systems. Constructed of metal with a silver metallic finish, this fan from the trusted brand CAN is designed for outdoor use in yards, gardens, and living spaces. The fan operates on 120 volts and boasts a sleek round shape with a 14-inch diameter, providing efficient and powerful airflow for a variety of applications.

$98.99
See listingEureka, US
mtmca_supply
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93.8%Low· 26
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Ramfan GF165SE PPV turbo blower with Honda engine
UsedBuy It NowBest Offer

Ramfan GF165SE PPV turbo blower with Honda engine

Ramfan GF165SE PPV turbo blower with Honda engine. runs great ready to roll.

$675.00
See listingGreentop, US
brzimm_87
Feedback
98.1%Excellent· 195
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AC Infinity 6" Carbon Duct Filter Inline Air Scrubber for Grow Tent AC-DCF6
UsedBuy It Now

AC Infinity 6" Carbon Duct Filter Inline Air Scrubber for Grow Tent AC-DCF6

$34.99
See listingBurnsville, US
vote4kang
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99.7%Excellent· 4.6k
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TERRA UNIVERSAL 6601-22-H-220-CE | Whisper Flow airflow of 640+ CFM
UsedBuy It NowBest Offer

TERRA UNIVERSAL 6601-22-H-220-CE | Whisper Flow airflow of 640+ CFM

> View phone number.

$699.95
Free ShippingLouisville, US
machinetool_emporium
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100.0%Excellent· 1.2k
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Green Air Products CT-DH-3P Atmospheric Controller Cooling Dehumidify CO2 USA
UsedBuy It Now

Green Air Products CT-DH-3P Atmospheric Controller Cooling Dehumidify CO2 USA

Dehumidify Range: 20-80% RH. - Status indicators (Cooling / Dehumidify). - Built-in atmospheric sensor probe. - 2x NEMA 5-15R outlets (CO2 Outlet + Exhaust Outlet). - Cooling Range: 10-110°F. - Master ON/OFF rocker switch.

$79.99
+$14.99Scottsdale, US
aazpoo_37
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100.0%Excellent· 57
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GDF150 6 Inch 410 CFM Centrifugal Inline Duct Ventilation Fan
UsedBuy It NowBest Offer

GDF150 6 Inch 410 CFM Centrifugal Inline Duct Ventilation Fan

This is a lightly used centrifugal exhaust fan. I had 24 of them that running 24/7 for a couple of months and they have been sitting idle for some timed now. I cannot guarantee they will work after they leave my care, but I can guarantee that when I got them down and cleaned them up, they ran fine. They are all single speed fans that are set up to either run at full speed, or not at all. No speed controller is included.

$25.00
See listingBrownsburg, US
jayjaygus
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100.0%Excellent· 88
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USED Ventech VT IF4 190 CFM 4 inch Inline Exhaust Blower Fan
TOP
UsedBuy It Now

USED Ventech VT IF4 190 CFM 4 inch Inline Exhaust Blower Fan

Tested working.

$54.99
Free ShippingRapid City, US
varialTOP
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100.0%Excellent· 3.3k
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USED Ventech VT IF4 190 CFM 4 inch Inline Exhaust Blower Fan
TOP
UsedBuy It Now

USED Ventech VT IF4 190 CFM 4 inch Inline Exhaust Blower Fan

Tested working.

$54.99
Free ShippingRapid City, US
varialTOP
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100.0%Excellent· 3.3k
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Edycarx CO2 Controller & Monitor – Used, Works Perfectly
UsedBuy It NowBest Offer

Edycarx CO2 Controller & Monitor – Used, Works Perfectly

A great tool for any serious indoor grower looking to dial in their CO2 levels. Dual CO2 sensors (Type 1 & Type 2).

$90.00
See listingFort Lauderdale, US
jesm_1542
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100.0%Excellent· 11
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Titan Controls EOS Complete Digital Humidity Controller ONLY.
TOP
UsedBuy It Now

Titan Controls EOS Complete Digital Humidity Controller ONLY.

🚫don't include any other accessories 🚫.

$85.00
Free ShippingLos Angeles, US
thunder_electronicTOP
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99.6%Excellent· 2.2k
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