The best CO2 Generator for growing rooms
There was a time when you could only get industrial generators but now there’s a growing market for a home or small-scale Co2 generators. While these aren’t going to be as efficient as industrial models, they’ll still produce enough gas to give your plants the boost they need for optimum growth.
- Titan – best co2 generator Propane
- ZRDR – co2 generator system for Aquaponics
- AutoPilot – best co2 generator for Grow Room
- The Green Pad – best co2 Bags for Grow Tent
- The Exhale Homegrown – best Small co2 generator
- ProCO2 XL Bucket w/ Handle – best Natural co2 generator
The best CO2 generator will have parts that are made out of stainless steel or Teflon to prevent corrosion and rusting. It also needs to have an accurate regulator pressure gauge so you are aware of how much Co2 is being produced at any one time.
Safety should also be paramount for any Co2 generator – don’t forget that the gas being released is highly flammable as well as poisonous if inhaled.
Below is a list of CO2 generators we’ve reviewed. All the units we’ve listed have been extensively tested and come with full customer satisfaction guarantees.

TOP Rated CO2 Generators – Reviews
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The Best co2 Generator propane

Titan CO2 generator Review
- 2/4/8/10 Burner
Carbon dioxide is scientifically proven to improve plant growth and yield by 20% or more! CO2 increases photosynthesis rates up to 40%, which results in higher yields for your plants. It also makes plants grow faster so harvest comes sooner!
The Titan Controls CO2 generator can be used in any grow space! This self-contained unit is ideal for smaller gardens. It includes everything you need to get started. CO2 generators enrich your grow area by providing clean & efficient CO2 via an internal safe burning propane burner.
Top benefits of Titan Controls Ares
- Plants grow faster.
- Higher yields.
Liquid propane burner: 21.6 cubic feet per hour (850 watts). 8″ diameter 8′ long aluminum supply hose with ¼” barbed shut-off. The coupler for the included regulator is made of 304 stainless steel, even on the inside where it contacts gas, to resist corrosion. Aluminum shielded electrical box power cord. Grounded 6′ ceiling hook with safety cable. To power this generator you will need CO2 compatible tank/cylinder or natural gas line.
Pros
- The kit has everything you need to assemble-CO2 Generator, AC power supply, hanging chain, ceiling hook, appropriate hose, and regulator.
- Known brand.
- Easy to use.
Cons
- No guarantee.
Conclusion
CO2 is scientifically proven to improve plant growth and yield by 20% or more!
If you’re looking for an affordable CO2 generator that’s easy to use, Titan Controls Ares 8 – Carbon Dioxide (CO2) Generator LP is a perfect choice. With everything you need to be included in the kit, all you have to do is connect this unit up to your gas supply!
Water cooled co2 Generator for Aquaponics

ZRDR co2 Generator System Review
A new and innovative CO2 generator system that produces CO2 by itself; no need to inject gas. A more stable and safer steel bottle base for your aquaponics. Comes with a bubble counter, filter cotton, saving you the trouble of purchasing them separately.
Top benefits of ZRDR CO2 Generator System
- ZRDR is a professional manufacturer of aquaponics products.
- is made of 304 stainless steel.
- equipped with Stainless steel pressure reducing valve and pressure gauge.
- contains all the parts you need to use, no more having to buy anything extra.
- is designed with a preset pressure of 0.6~0.8MPa 2L steel bottle can maintain continuous production for about 10 hours.
- is easy and simple to install and very safe in use: no release of carbon dioxide in cool water or in an enclosed space, the stainless steel valve lets off only the gas you generate so there is no risk of overheating your CO2 system and causing possible leaks or explosions, etc… It also includes a pressure relief device that will automatically seal when the maximum allowable working pressure (MAWP) is reached which further improves safety.
Pros
- No need to inject gas.
- Compared to the traditional CO2 generator, CO2 generation is 60% faster.
- Detailed installation instructions in English.
- All necessary accessories are included.
- Well-known brand.
- A safe device.
Сons
- The solenoid heats up.
Conclusion
ZRDR CO2 Generator System Carbon Dioxide 2L with Pressure Gauge Automatic Pressure Relief Valve Bubble Counter for Aquaponic Plants is a great product. It’s well made and easy to use, not to mention that it comes complete with all the parts you need in one box.
The Best co2 generator for Grow Room

AutoPilot CO2 Generator Review
- 4/8/10 Burner
The Autopilot generators provide and maintain the carbon dioxide levels needed to meet maximum growing potential. Adding an Autopilot generator will make your plants grow better at the same time saving money on fuel costs!
Top benefits of AutoPilot Generator
- Specified carbon dioxide levels will increase the growth potential of plants.
- Powerful, reliable generators are safe and easy to operate.
- Generators come in natural gas and propane models for different needs.
All models have precision manufactured brass burners that produce less NOx and CO than regular burners, as well as a highly reliable solid-state electronic ignition module that creates a spark to light the burners. They also feature built-in safety features such as a tip-over switch that shuts off the gas source if the unit falls over, plus elevated atmospheric CO2 levels show remarkable increases in plant growth productivity!
Pros
- Powerful, reliable generators.
- Safe.
- Easy to operate.
- In natural gas and propane.
- Shuts off gas source when a unit falls or tips over.
- Economical gas consumption.
- Easy to install.
- Has an indicator light for a shutdown.
- Steel housing with resistant coating.
- Suspended model.
- Handy carrying handle.
Сons
- Higher initial investment than other CO2 generators.
Conclusion
If you’re looking for a CO2 generator that is easy to install and use, the AutoPilot APGN1000H CO2 Generator may be perfect. This model features brass burners that produce less NOx and CO than regular burners as well as built-in safety features such as a tip-over switch that shuts off the gas source if tipped or falls over.
The power generators are safe and reliable. All of these benefits make this a worthwhile purchase for any greenhouse owner, but the initial investment may be too high.
The best co2 Bags for grow tent

The Green Pad GP6050 CO2 Generator Review
The Green Pad CO2 generators make it easier for you to add carbon dioxide to your indoor garden. The amount of gas is released in a natural way and the humidity is absorbed by the pad.
Top benefits of The Green Pad CO2 Generator
The Green Pad CO2 generators have made adding Carbon Dioxide to indoor gardens easier than ever.
The Green Pad CO2 generators have made adding Carbon Dioxide to indoor gardens easier than ever. THE GREEN PAD absorbs the humidity in your indoor garden, to power its natural chemical reaction, releasing a measured amount of carbon dioxide. This means that you don’t need any special equipment or knowledge to get this great gas into your space and make it healthier for you and your plants.
All you need is an ordinary humidifier (or anything else that can add water droplets) and a few pads to hang up overhead and below the canopy of your plants. The best part is that these pads last about two weeks before they stop generating CO2; so there’s no risk of running out like with tanks – just replace them as needed! And they’re also ready to go whenever you need them – no timers, run by batteries, or any other special requirements.
Pros
- Produce CO2 for two weeks.
- Ease of use.
- Suitable for urgent CO2 generation.
- Operates without the use of power sources.
- Low cost.
Cons
- A humidifier is needed to activate the pads.
- You need a few pads per 200-400 cubic feet of garden space.
- The pads only last about 2 weeks before they stop generating CO2.
Conclusion
The Green Pad GP6050 CO2 Generator Contains 5 Pads w/2 Hangers is an innovative way to add Carbon Dioxide to your indoor garden without any special equipment or knowledge. All you need is a humidifier and some pads, which are ready when your plants need them – no timers, run by batteries, or any other special requirements required!
The best Small co2 Generator

The Exhale Homegrown CO2 Review
Exhale is a company that does bags of co2. When you use this bag in your grow room or tent, it will help you with co2 levels. It will give you an increase of up to 1300 ppm!
Top benefits of The Exhale Homegrown CO2
- Co2 levels increase from 400 ppm to over 1300 ppm
The perfect way to supplement your co2 levels in a grow room or tent is the ready-to-use bag.
Pros
- Increases CO2 levels.
- Comes with a hanger.
- Increased plant growth.
- Safe for plants
- Co2 levels increase from 400 ppm to over 1300 ppm.
- Can last another 5-6 months.
Сons
- Has to be activated.
- Co2 levels decrease to 400 ppm after 2 months.
- Suitable for small rooms.
- Does not work for 9 months, as stated by the manufacturer.
Conclusion
If you’re looking for a way to supplement your CO2 levels in a grow room or tent, this premixed bag from Exhale is the perfect solution. The increase of up to 1300 ppm will help promote plant growth and it’s safe for plants! You’ll need to activate this product before using it. This one bag can last 5-6 months.
The best Natural co2 Generator

ProCO2 XL Bucket w/ Handle – Natural Releasing Carbon Dioxide Boost Review
ProCo2 buckets were created to increase your yields and overall plant growth at a minimal cost. T Unlike any other Co2 bag or bucket on the market; XL ProCo2 comes with a built-in handle and s-hooks.
The ProCO2 XL Bucket is a good solution for people who want to grow more vegetables. It has a handle and hooks, which makes it easy to hang the bucket anywhere.
Top benefits of ProCO2 XL Bucket
The ProCO2 XL Bucket w/ Handle – Natural Releasing Carbon Dioxide Boost is the perfect solution for increasing your yields. Coming with its own handle and s-hooks, it’s easy to hang this bucket anywhere, making it work best in enclosed areas like greenhouses. You can start releasing higher levels of Co2 once you remove the sealant sticker from the top of the bucket. There are no refill requirements necessary; just take down your old buckets when they’re dry and purchase new replacements! The net weight is 4.5 lbs., height is 9 inches, diameter is 1 8 inches (total coverage is 5×5 ft). The expiration date lasts up to five or seven months after purchase.
Pros
- Comes with handles and s-hooks.
- Increases yields for minimal price.
- No refill requirements, just replace old buckets when dry.
- Ease of use.
- A well-known brand.
- Detailed instructions.
Cons
- Doesn’t work in open spaces.
- Requires replacement of old buckets when dry.
- Plastic buckets are difficult to dispose of.
Conclusion
If you’re looking for a cost-effective way to increase your yields, the ProCO2 XL —ideal in enclosed areas like greenhouses!
How to Choose the best co2 generator for growing the room?
The best CO2 generator will be one that is refillable and easy to maintain. Make sure the unit you choose has an accurate regulator gauge, as this will give you a clear indication of how much Co2 is being produced (and where you need more). Furthermore, look for a unit that is made out of stainless steel or Teflon; these types of material are corrosion resistant and won’t rust over time.
Features you should consider when buying the best co2 generators for growing room:
There are several features on the market that can increase your productivity so take some time researching them before making a purchase. These include timers, light sensors, humidity gauges, electronic regulator gauges, etc… You’ll find some generators come with extra features already included, but a lot of them can be added as an accessory later on.
Timer – This allows you to set the generator to turn off and on at specific times during the day. This is perfect for those who want to fine-tune the amount of Co2 their plants receive over a 24 hour period.
Light sensor – Can be programmed to increase or decrease Co2 output depending upon how much daylight there is. Great for greenhouses where light levels fluctuate throughout the day.
Humidity gauge – Helps maintain humidity within your grow room by increasing or decreasing Co2 production based on current levels. Ideal if you’re having problems with mold or mildew in your, as it will help prevent this by increasing humidity.
Electronic regulator gauge – Gives you real-time readings of Co2 levels in your grow room, so you can see how much gas is being produced at any one time.
What types there are the best co2 generators for a growing room?
There are four types of CO2 generators: disposable, refillable, on-demand, and continuous. CO2 generators come in several different shapes and sizes. The size of the generator will affect how much Co2 is produced at any one time. They also need to be placed where they are out of the way, especially if they are refillable or continuous.
The best CO2 generator will be a refillable one. These types of generators are the most flexible, as you can easily add more Co2 when needed and they’re also cheaper to maintain in the long term.
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How do co2 generators work?
A co2 generator is a device used for growing your plants. It’s pretty simple, but it plays an important role in the development of your plant.
It works by releasing co2 through a fan into your grow room around the clock. It usually comes with other features like timers and settings to keep everything just right for your plants.
How much pressure can a co2 generator produce aquaponic?
A 5-gallon fish tank with a fish as the source of carbon dioxide can generate approximately 8 pounds per square inch (PSI) of co2 pressure. This amount is enough to run a small aquaponic system for 24 hours or so before it needs to be refilled. If you wanted to generate more than this and had an additional tank, you could connect two tanks in series and double the output pressure. The first tank would push gas into the second under about 1/2 PSI and the second tank would then increase that to whatever PSI you needed by pushing against atmospheric pressure, which averages around 14.7 PSI at sea level (you can calculate using Dalton’s law). Of course nothing like this exists commercially because of liability issues that would be involved. The only thing remotely like what you are describing is high pressure sodium vapor lamps used to run CO scrubbers on submarines during the Cold War, which were rated at up around 12,000 PSI (but the things weighed hundreds of pounds).
This Co2 burner is a big improvement over the old school pilot light type that burns constantly. This combined with an environmental controller has reduced my propane expense by 75%. I used to need 4 tanks for 3 months of growing and now I am only consuming 1.