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Before you Buy a Hydrogen Generator (HHO)


Note:  If your intentions are to purchase or build a hydrogen producing generator that will totally power your motor/car/vehicle/truck, think again. Electrolysis uses amperage. Your vehicle alternator is limited to the amount of amperage it can constantly produce and any amperage puts a strain on your engine power. Causing your engine to do extra work is not going to help. After all, you are looking for better efficiency - right? You should also consider the fact that your internal combustion engine was designed to be an air pump. HHO does not need Air. That air dilutes any amounts of HHO. So if you accomplish powering your engine with 100% HHO, it will be diluted by the air --- by design. The engine pistons' movement sucks air in, through the air intake valves, compresses it, and lets the air out through the air exhaust valves,  Air is an essential part of combustion for fossil fuels; that is where the Oxidizer comes from. Oxidizers are needed in order to have combustion. As for HHO, air is not needed or wanted. HHO contains its own Oxidizer, a perfect air fuel mixture of 66  and 2/3 % hydrogen and 33 and 1/3 % Oxygen. The presence of air dilutes the new hydrogen fuel; which means it will not be as powerful or as effective; Something to think about.

Your engine emissions computer is programmed to maintain 14.5 to 14.7 parts air for each part of fuel vapor. As mentioned, air is the oxidizer. It contains 10% to 20% oxygen. It is the oxygen that is needed to burn the fuel. It is the oxygen that the engine monitors in the exhaust. If oxygen levels are low, the computer calls for less fuel. If the oxygen levels are high, the engine calls for more fuel. Changing the Air ratio, even slightly, changes your fuel economy. This is what the so called fuel experts tend to ignore. Slight changes in oxygen content, make changes in fuel economy.

Keep Electrolysis simple. Use HHO to "assist" with cleaner burning of your fuel by using it as an additive to the Air. If you can completely burn the fuel, your exhaust greenhouse emissions will be almost non-toxic. That should be your primary goal. If you can accomplish that, better fuel economy has a chance to follow. If it does not, then your engine computer is preventing it. You will have to find a way to better control your air fuel ratio. There are ways of doing that, but most are illegal (thank you EPA for making good citizens into law breakers). Emissions computers could be programmed to allow more Air, as long as poisonous exhaust gases are not being produced. Instead of reading oxygen levels, how about reading Nox levels, and CO levels. Those are the bad guys. Oxygen in the exhaust is good. CO2 in the exhaust is good (it means that much CO completely burned).

Starting in 2011, the EPA started enforcing Emissions Tampering Laws. If you, as an experimenter want to avoid violating them, then keep your HHO production at a minimum so that the emissions computer does not sense the excess oxygen. One way around the oxygen problem is to use Separation Cells that create Hydrogen and Oxygen is separate chambers. Discharge the oxygen into the atmosphere, and add the Hydrogen to your Air System. The 14.7 parts Air will be enriched by the hydrogen. The hydrogen will burn more of the fuel surrounding it. The emissions computer is not going to measure as much oxygen in the exhaust, so it will cut back on the amount of fuel it controls. Mission accomplished.

I will say it one more time, "HHO is not a Fuel. It is an Air Additive".



"There are a lot of HHO Generators for sale on the web.
I have some advise that will help you decide which one is right for you."

  1. First of all, Do not buy on promises of Liters Per Minute, an attractive Marketing Strategy.
    Most companies advertise how much HHO their Cells can produce. It is a strong selling point, but LPM comes at a cost; Amperage; and amperage increases the load on your engine's efficiency to turn. HHO companies know this, so be aware that there are companies that will tell you their cell can produce 2.5 LPM using only 32 amps. Well, I have no doubt it can produce 2.5 LPM, almost any cell can be made to do that. Personally, I would question the 32 amps; and so should you. That is one of the reasons I built my Cell Configurator; to calculate the LPM, based on the cells' plate configuration. If a cells' configuration requires 48 amps to produce 2.5 LPM, and the company states it does so using only 32 amps, buyer beware
    hho-plus.com is a prime example. Not only do they overstate the LPM/Amperage, they only rate their Power Relay to be 30 amps.(for their 32 amps cell and their 50 amp cell). 
    http://www.hho-plus.com/product.php?id_product=12   and   http://www.hho-plus.com/product.php?id_product=13

    If you doubt a companies product, email me the details. I will check it out for you.

  2. How much room do you have in your engine compartment for a cell? How tall can it be? How wide can it be? Will your generator need a bubbler? How big can it be? Where will it fit? You need to know those things before you make that purchase. A lot of installations are accomplished in front of the radiator, or behind the radiator. Do not put the generator in the passenger compartment.

  3. Container construction is one of the most important factors to consider. The biggest problem is leaking. Avoid glass and plastic plumbing pipe. They can be hazardous. Hot Glass shatters if cool water touches it. Heat causes Plastic Plumbing pipes to get soft and loose shape. Avoid aluminum containers if you plan on using caustic or acid based electrolytes; potassium hydroxide, sodium hydroxide eat aluminum. Acrylic, HDPE, CPVC, and Polycarbonate (lexan) are the plastics I recommend; with the exception of high heat Nylons. However, Polycarbonate can not be used with KOH (Potassium Hydroxide), it causes cracking: it will crack like safety glass. In my opinion, Stainless steel makes the safest container.

  4. I have listed a few reliable companies below, but you can find others by Searching the web for HHO Generator, HHO Cell, Hydrogen Generators, Dry Cell, etc..,

  5. Don't get caught up in fancy words and advertised promises. If it sounds too good to be true.... it probably is best to get my opinion. Having a good quality product is important, but it needs to be supported by good and reliable Customer Service

  6. If they can't show you the HHO gas being produced, stay clear, move on. Most will not show you the inner works of their systems. That is ok; but you at least need to see the output.

  7. Know what you are buying. If you do not know and need help, then ask me. I can tell you, without being biased.

  8. Search the seller for fraud reports. example:  seller name fraud, or just seller name. There are a lot of website forums that talk about this subject.

  9. I know there are some good products and good companies available, but be aware of a large number of scams.

  10. Use my site to learn more about the subject.

  11. My way of building these things is only an example for you to learn from. You, my friend, need to find the MacGyver in yourself and adapt your own ideas because your circumstances may be different. I show you the principle of this process. Learn from it; plant the seed and grow it your way.

  12. Be advised, I do not sell these generators. I do not sell my information. I do not have or provide schematics, drawings, files, DVD's, or CD's that you can use to make these things with. Do not ask me to change my mind; do not say you will make it worth my while. No means NO!

  13. If you have questions, just send me an email .

  List of HHO Companies





I have a friend in Taiwan that has 3,000 Heavy Duty Jar Cells for sale.

Warehouse Storage is expensive for him, so he wants to Clear Out his Inventory.

This is a Business opportunity. You can obtain quantities of these units at or below manufacturing cost.

* Customized Injection Molded Heavy Duty materials.
* 316L Stainless Steel metal parts
* Fully Assembled
* Mounting Bracket Included
* Units are packaged in Styrofoam, Singles and Six Packs

  More Details


I recommend these cells

This company make a variety of cell sizes, from small to large; all quality materials and craftsmanship!
They offer everything you will need - in Kits. I have personally examined these cells. They are of outstanding craftsmanship and superior performance.
  Global Ecological Solutions 
  • X1 has been replaced by the X2 model.
  • Models available - up to 5 LPM)
  • -NNNNN+ (7 plates per stack ...my favorite configuration)
  • This 1 stack configuration can produce 1 LPM at 16 amps
  • Runs Cool for days
  • Quality Materials and workmanship
  • This company has a very good reputation.
  • Sold as kits on their web site



Hydrogen Generator Kit Parts:
  • HHO Generator: 1                                               Flat Wire Connectors: 4
  • Water Reservoir Tank: 1                                    Tap Splice: 1
  • Water Trap Container: 1                                     Fuse Taps: 2
  • Red Wire: 10 feet                                                 Fuse: 2
  • Black Wire: 10 feet                                              Inline Fuse Holder: 1
  • Relay: 1                                                                 HHO Vacuum Hose: 10 feet
  • Circuit Breaker: 1                                                 House Clamps: 8
  • Large Round Wire Connectors: 4                    PWM: 1
  • Medium Round Wire Connectors: 2                EFIE: 1
  • Small Round Wire Connectors: 4                    Self Taping Screws: 16
  • Fitting for Air Intake: 1                                         Amp Gauge: 1



Green Fuel H2o

59 Plate Plug in HHO Generator Green Fuel H2o makes a cell that runs off of 120 Volts AC

 *  Contains 59 Series Plates
 *  Produces 1 to 9 LPM
 *  Designed to run at 15 AC Amps
 *  Comes with Bridge Rectifier Power Supply, rated at 70 Amps
 *  Other DC Models are available on their web site.
 *  This company has a very good reputation.



Green Fuel H2o


HHO2U Dry Cell
  • 11 plate configuration:  -nnnn+nnnn- (2 stacks of 6 plates)
  • 3.5" x 3.5" 18 gauge 316L stainless steel plates
  • This cell is not cheap made, it is quality.
  • They claim 2 liters of HHO per minute @ 15 amps (I contest it)
  • I rate this configuration at 522 MLPM at 10 amps, 135 watts. 5 amps per stack is the maximum efficiency limit.
    There is not enough surface area for higher amperage without introducing excess heat.
    It can produce 1 LPM at 19.2 amps, 259 watts
  • O-rings are 1/8", compressed to 1/16", EPDM rubber, 260 degrees F (Inside Diameter Unknown)
  • Acrylic is 4"x4"x1/2 thick rated at 300 degrees
  • Hose barbs are 1/4"
  • Aluminum bracket
  • The output could be improved by increasing the number of plates, or by changing the gaskets to one with a larger inside diameter. There is a lot of wasted plate surface area when using this type of dry cell design.
  • The 3 holes in the plate stop the gas from pulsing, the middle hole relieves pressure.
  • This company has a very good reputation.

  HHO2U.com website

  Ebay seller thegasmakertn




   DJC7 (Dry Joe Cell) using 7 tubes; 5 are neutrals

  DJC7 for sale by eBay seller vpuriy  http://myworld.ebay.com/ebaymotors/vpuriy/

  DJC7 Plans for building your own - for sale on eBay


  • I do not agree with the wire connections here. It works, but does not look professional. The stainless steel band, holding the copper wire, is ok, but the strands of copper need to be soldered together, or else a connector needs to be added to the end of the wire. Moisture is going to get between the strands and cause the copper to corrode. This should be an easy fix.
  • I am not so interested in his method of cooling the cell with those white strips of thin metal. It looks gaudy. Besides, they take up extra space that is most likely not available in your engine compartment. Just my opinion.
  • This design looks like it has a hole in the bottom plate for the water fill hose. A bubbler is needed.
  • I suggest making the electrical connection, for the outer tube, close to or near the bottom. Believe it or not, that will make a big difference. It will cause the magnetic field to surround the complete length of each tube. This will help the HHO gases exit the top, instead of hanging around. It will also cause the electrical current to flow over more surface area. Ripley's believe it or not.
  • I would prefer the smaller, 6 inch cell that they offer; the one with 8 tubes. Smaller is better.

They offer 3 sizes:

  • DJC86:    6 inch tubes, 8 tubes 1 in to 2.75 in, 3.2LPM at 40 amps (best in my opinion)
  • DJC76:    6 inch tubes, 7 tubes 1 in to 2.50 in, 2.4LPM at 40 amps
  • DJC712: 12 inch tubes, 7 tubes 1in to 2.50 in, 4.2LPM at 70 amps



I do Not recommend these cells

  1.  I know two people that have purchased plans for the Hydrostar System. The person selling the system can not provide any support what so ever. He refers you to some one else, that refers you to someone else. They never got any of their questions answered after many attempts. That alone should tell you something.
  2. I have looked at the documentation you purchase. There is no way for you to accomplish this project on your own. It is very techie. It is not supported by enough photographs. There is nothing in the manual that shows a photograph of the real deal; only drawings. They say the unit should be available "Assembled and ready to install" by 2007. Has anyone seen it yet?
  3. E-mail the company at mailto:info@hydrostarguide.com
  4. Anyone that has more information about this system or this company, please let me know. I would gladly post it here for all to read.


Water4gas      | Runyourcaronwater  | Runyourcarwithwater


Water for gas is a system using a glass jar and stainless steel wire. Will it make HHO? Yes it will; but not very much. Two kitchen spoons can produce more gas.

Does anyone have information to add?


   HydraFicient     I have been warned that this company is a SCAM.

I am not one to complain, but take a look at the HydraFicient cell running on a 12 volt battery, using its Special Control Module. They advertise it will not work properly with out the control module. Now their video says it produces 1 to 2 liters of HHO per minute.

Look closely, this is full production. I would estimate it would maybe produce 200 milliliters a minute. Water level is just above the top of the tubes. Absolutely no tiny bubbles.

The cell is made from almost all plastic; so they say.


Page Last Edited - 04/03/2022

    Copyright 2003   All rights reserved.   Revised: 04/03/22.                                             Web Author, David Biggs
The information presented on this web site is for information purposes only. Should you decide to perform experiments or construct any device, you do so wholly on your own responsibility
-- Neither the company hosting this web site, nor the site designer author are in any way responsible for your actions or any resulting loss or damage of any description, should any occur as a result of what you do.