Here you can view our last shipped orders.
16. This breaks the laws of thermodynamics. It should not work!
A common fallacy is that it takes more energy to produce the HHO than the energy it releases. This is true in part when we see only the electrolysis process but when the HHO gas is mixed with your usual fuel inside the engine it allows the fuel molecules to burn better and more efficiently thus releasing much more energy than before. This is why it works.
17. Do you have a reseller distribution program?
Yes, if you are interested in becoming our reseller please contact us by e-mail to sales@hhoplusgas.com
18. Why do your kits costs less than others?
It's because we manufacture and produce all of our products. Due to the large volume of units produced we can buy materials in large quantities at the very best deal and streamline our production and pass the savings on to you. It would make no sense for us to have the best product out there if it were so expensive that the average consumer could not afford it.
19. Can I use a bigger HHO model in my car?
Yes, you can use the immediate above model for your car. The fuel savings will be not much higher but the life span of the generator will increase a lot. For the small price difference between models maybe it is a good investment.
20. What safety devices are in the kits?
We have included in the kit a bubbler and a non-return check valve to prevent any damages if the engine backfires. The bubbler will also wash any traces of electrolyte vapor out of the gas being sent into the engine.
21. Can I use any kind of water?
It is recommended that you use distilled or de-ionized water but you can use tap water if it does contain too much iron or limestone.
22. How often do I have to check the water level in the tank?
Check it about every time you fill your car with a full fuel tank.
23. Why do your kits costs less than others?
It's because we manufacture and produce all of our products. Due to the large volume of units produced we can buy materials in large quantities at the very best deal and streamline our production and pass the savings on to you. It would make no sense for us to have the best product out there if it were so expensive that the average consumer could not afford it.
24. Will installing an HHO kit void my vehicle warranty?
No. It is an add-on device that can be easily removed. Since you are not modifying the engine or computer your HHO kit does not void your warranty.
25. My car doesn’t have much space under the hood. Where can I install the HHO System?
There is always some place a unit can be installed. Our Hydrogen generator is the smallest on the market, the size of a motorcycle battery. The best place is in front of the car under the bumper.
26. How much would it cost me to have a mechanic install this?
Installation to your vehicle can be easily done by any good mechanic, or by yourself. Mechanics normally like the idea and respond well once they see the installation instructions. Installation depends very much on your vehicle and the hourly rate of your mechanic. However we can estimate your installation will take between 1,5 hours up to 3 hours.
27. When do I get my instructions manual?
You get acess to the manuals download page immediately after you make your payment. After the transaction you will get instructions to continue to the download page. If you accidentally skip the page or close the browser, just send us an e-mail to info@hhoplusgas.com.
28. Does HHO injection work on vehicles with Turbo?
Yes. HHO works in turbocharged engines. Just make sure to inject the HHO gas before the turbocharger, not after.
Policy of Refund, Repairment and Replacement and Exchange
We will try our best to make sure the products shipped to our customers are in good quality. If there are some problems on the goods, you have right to guarantee your benefits.
Different products have different warranties, so make sure you contact us before the deadline. If you don’t know the warranty of your item, you can contact our staffs before making a purchase.
1. Return & refund with quality issue
Products with quality problem can be returned for full refund.
Customer need to send the products back to us, When we receive the products, We will give an full refund.
2. Replace
Products with quality problem can be returned and replaced.
Customer need to send the products back to us, When we receive the products,We will replace new ones and ship back to customer.
We will pay shipping fee for the replaced products we ship to the customer.
3. Repair
Products with quality problem can be returned and repaired.
Customer need to send the products back to us, When we receive the products,We will repair and ship back to customer.
Buyers pay all the shipping fees in both sides.
4. Exchange
If you are not satisfied with any of our products due to a fault, you can send them back to us for an exchange to another product, in this case, we don’t pay the fees, you send the item back and you need to pay the difference between product costs etc.
5. Return for “not satisfied” reason
Because the international shipping fee is very high and most of pictures on hho-plus.com are taken by ourself with real products. So we do not give full refund for returns without quality problems,like “not like the picture”,”not as imagining” or just “not satisfied”. Before placing large quantity order, please have sample first.
If you are not satisfied with your purchase, you can return a product within 3 days after delivery to receive a replacement or a refund of its price minus the shipping fees. If the return is not a result of our error, customers will be required to cover shipping cost both ways.
Please ensure to return the item with its original packaging and accessories in the same condition as when you received it.
We will reduce the shipping fee from the order total amount means a partial refund.
Important Notes
All customers should contact Customer Service for approval before sending anything to us before returning any item(s). hho-plus.com will not be responsible for returned item(s) without notifying us in advance. When contacting hho-plus.com please include the following information:
Photos of the front and back of the packaging envelope or box
Partial shipment slips (if applicable)
Photo, video, screenshot, or description of the defective item
Photo, video, screenshot, or description of the defect or defective area
Please keep all packaging material and partial shipment note(s) as they’re needed for returns. After mailing back the products, please be sure to provide us the tracking number of the returned package, if there is no tracking number available, a picture of shipping receipt is necessary. If neither of them can be provided, we might have to hold processing for you until the package arrives at our warehouse which may take one to two months, please kindly note.
Refunds are made via the payment method you originally used to order. Customers are responsible for all payment fees (if any) issued during processing and transfering any refund.
If possible, please make sure you have checked the package contents before you sign for it. If you see any visual damage or it feels empty, please refuse to accept it and contact us. Once you sign for the item, you are signing acceptance of the integrity of all products as is and CANNOT refute the shipping charges for the empty package.
As our return warehouse is located in Portugal, please send item back to us through local post office or express service like DHL,UPS,TNT,FEDEX… so as it´s very unlikely it will incur import taxes when it reaches customs and it may also be delayed during the customs clearance process. If we can’t receive the item we can’t arrange a replacement or repair.
Please send the item back according to our return policy. If it cost too much custom duties or the parcel is not trackable via tracking number and customer name, we will reject your return parcel by express.
Please remember to include a note in your package indicating the following details:
your order number;
SKU numbers returned and quantity;
A short description of the problem(s) of the defective item(s).
This note will help expedite the processing time for you.
hho-plus.com reserves the right to make changes and/or improvements to this policy. Any changes will be updated on the Policy Page/HELP section of our website.
If there are any further inquiries, please contact our Customer Service team for more information.
PayPal Buyer Protection
PayPal Buyer Protection: We Proud to provide Paypal Third Party
If you don’t receive your item, or the item is significantly different from its description in the seller’s listing, PayPal Buyer Protection covers eligible transactions for up to the full purchase price plus original shipping charges. (Some purchases aren’t eligible for this program, including vehicles in the Motors category, capital equipment in the Business & Industrial category, and Real Estate.)
An item is covered by PayPal Buyer Protection if:
*You purchase the item on hho-plus.com.
*You use PayPal to pay for the item.
*You correspond with the hho-plus.com using the email address sales@hhoplusgas.com
*The seller’s listing is for a physical item—services and intangible items aren’t covered.
*You file only one claim per PayPal payment.
*You open the case no later than 180 calendar days from the date of your PayPal payment and – if you need to – escalate it to a claim no more than 20 calendar days after you open your case.
*You meet the PayPal Buyer Protection requirements outlined in Section 13 of the PayPal User Agreement.
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Certificate of Product Protection
Registration Number:
002077925-0001-0002
1 . What are the fuel savings and advantages using our Hydrogen Technology?
Most users have savings from 20 to 30% in fuel consumption. There are cases of higher results with the HEC Chip in electronic fuel injected cars. Hydrogen reduces fuel consumption by carbom based on fuel to burn more completely and efficiently. Hydrogen also helps to clean the carbon deposits inside the engine. Hydrogen exhaust emissions are pure water. So, you save fuel, save money and save the environment.
2. Is a hybrid fuel system more prone to rust or corrosion?
No. The fossil fuel [gas or diesel] produces enough heat during combustion to vaporize the Hydrogen as it converts back to water and exits the exhaust system.
3. Can this system improve my performance?
Yes, the injection of Hydrogen into your internal combustion engine will assist in cleaning the internal parts as the engine runs. It will increase the torque and horsepower and reduce the hydrocarbon pollutants currently being released into the air through your exhaust. Hydrogen burns faster and cleaner than gas or diesel within your engine. This makes your vehicle run smoother, longer, cooler, and more efficiently than ever before.
4. Does it work with Diesel, Petrol or GPL vehicles?
Yes, it works with all vehicles with internal combustion engines.
5. Does the hydrogen generator cause any short or long term harm to my engine?
No, the hydrogen generator does not cause any problems to the engines.
6. What type of routine maintenance is involved?
Filling the water tank with distilled water as needed. Every 1000 km you will need 1 liter of water and add litle bit of electrolyte. Every siix months, depending on amount of use, it is recommended to drain and flush the system and replace with fresh distilled water and electrolyte catalyst.
7. What is the electrolyte used?
The best electrolyte is KOH (Potassium Hydroxide). Very cheap and easy to find.
8. Will the water in the unit freeze in winter?
No, if you add about 20-25% of isopropyl alcohol to the reservoir solution to avoid freezing in winter months.
9. What if I don’t use Distilled water in my generator?
Distilled water is basically pure water. Other types of water like tap water, mineral water, pond water, sea water, etc., will work but they will also quickly cause the electrolyte to become “muddy” due to the minerals and impurities in the water. The muddy electrolyte will build up on the generator plates and act as an insulator causing Hudrogen gas production to suffer. The same is true with many other types catalyst, especially any catalyst containing sodium, like baking soda or sodium hydroxide. Sodium will quickly contaminate the electrolyzer plates and cause the unit to become ineffective.
10. Can the hydrogen generator explode?
No. The hydrogen production is made on demand. You will have hydrogen only when your car is moving. Unlike pressurized gas tanks, there is only a small amount of hydrogen pressure in the system.
11. If I have questions is there any tech support for my Hydrogen Generator?
Tech support is provided for your Hydrogen Generator (info@hhoplusgas.com).
12. Is there any kind of warranty that comes with my Hydrogen Generator?
Yes, 2 years 100% warranty for parts and unit repair or replacement.
13. In case of an accident will the Hydrogen Generator blow up?
Absolutely not, all you will have is water and electrolyte on the ground.
14. Can we use the Hydrogen Generator on a power generator?
The Generator can be used on any power generator.
15. What is the products life?
To date we have units sold for 2 years still operating.