Air Stream Single (HVAC)

Nebulizing & Extra Large Space Scent Diffusers

Convenient and Discrete.

Scent your entire home or business through the HVAC / AC with ease. The Air Stream Single cold-air, commercial and residential fragrance diffuser conveniently brings your favorite scent into every room. Holds 2 half gallon jugs of aroma oil.

Key Features

Covers 1,000 - 7,000 sq.ft., HVAC/AC Connect, Refill yearly

Oil Bottle Size

Requires 2 half gallon jugs to fill (oil not included)

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  • Why use a Nebulizing Scent Diffuser over Ultrasonic Diffuser?

    When scent is diffused through nebulization, a process that breaks down fragrance oil into a very fine dry mist leaving no residue it preserves the intention behind our aroma and essential oil blends. This leaves their olfactive and therapeutic powers intact without diluting the oil in water, heating it or adding solvent to it. The result is a subtle scent that remains consistent day in and day out.

    The Basics

    The Air Stream Single™ scent machine covers 1,000 - 7,000 square feet. Standing freely, this powerful cold-air home or business scenting device is designed to be conveniently connected to your HVAC / AC (air conditioning system). This fragrance diffuser also has the option to be mounted to a wall for easy and discrete installation. The Air Stream Single™ air handler scent delivery system utilizes cold-air diffusion technology to provide the highest quality aroma with no residue left behind. Cold-air diffusion preserves the integrity of aroma and essential oils, so you can receive the maximum olfactive and therapeutic benefits, without heat, evaporation, or diluting the oils in water or alcohol. The scent intensity is easily controlled through an external digital touch screen.

    Scenting a larger home or a business?

    If you are looking to scent multiple rooms in your home, a hotel or a casino lobby or maybe retail store that is over 1,000 sq.ft. and want a reliable commercial fragrance machine please contact us to get more details on the Air Stream Duo HVAC / AC scent machine. Scenting your home or business has never been easier with patented scent delivery systems from AromaTech. 

    AromaTech™ diffusers increase your health and well being by releasing nano particles and purify the air. Our diffusers are ideal for creating a unique and inviting ambience in your home or business and getting the maximum health benefits from your fragrance and essential oils.

    Key Features

    • Uses patented cold-air diffusion technology, a heat-free system to disperse essential oil molecules into the air
    • Covers 1,000 - 7,000 square feet of space
    • Adjustable fragrance intensity and 24/7 timer
    • Ultra-quiet operation and energy efficient
    • HVAC / AC scent diffuser
    • Wall-mount installation option for the fragrance diffuser and oil drum
    • Leaves no residue
    • 4 liter drum of oil can last up to a year depending on settings
    • Recommended bottle size: (2) half gallon drums

    Unique Technology

    The fragrance is diffused through nebulization (cold-air diffusion), a process that breaks down essential and aroma oils into a very fine dry mist. This preserves the intention and integrity behind our oils, while maximizing their olfactive and therapeutic powers, without diluting in water, solvent, or using heat.

    This patented nebulizing technology, combined with an essential and aroma oil blend, produces nano-particles that suspend in the air for several hours providing the benefits of therapeutic use essential oils or simply enhancing the ambience in you home.

    Diffusing helps to reduce dust, pet dander allergens, and other airborne allergens from non-living matter. Cold-air diffusers support healthy indoor air quality while providing ambience and well-being for you and your family, while AromaTech’s™ 100% Natural Diffuser Blends bring nature’s unrefined beauty into your space.

    Air Stream Single™ Specs

    • Covers 1,000 - 7,000 square feet
    • Power: 110-240 volt power source
    • Consumption: 1-3 ml. per hour
    • Air Pump Dimensions: 7” H x 6” W x 6” L
    • Oil Drum Dimensions: 12” H x 6” W
    • Bottle Capacity: 4 liters (8-12 months)
    • Recommended size to buy: (2) half gallon drums or (8) 500 ml. bottles
    • Refill: 8-12 months depending on usage
    • Weight: 7 lbs without oil
  • How It Works!

    The Air Stream Single™ scent machine is a very powerful and effective scenting system that is easily connected to your HVAC/AC (air conditioning system) of your business. Utilizing cold air diffusion (nebulizing) technology to release tiny nano-particle into the air, the Air Stream Single™ provides a subtle and consistent scent leaving behind no residue. This, virtually silent, essential and aroma oil diffuser covers 7,000 square feet of space in matter of seconds.

    Let’s Set It Up!

    • Fill up the aluminum 4 litre drum with 1 half gallon drum or (8) 500ml bottles of your favorite aroma oil.
    • Screw the bottle into the diffuser.
    • Connect the air pump (black box) to the diffuser with the oil drum using supplies air tube.
    • Drill a 1/2 inch hole inside your air duct and insert an air tube from the diffuser into the air duct. Make sure to keep the tube straight, avoid kinks and coils. Insert the tube into the duct work of the air supply,
      past the filters and coils never on the return side.
    • Keep the air tube from diffuser to the air duct as short as possible, recommended length is 6 – 15 inches.
    • Keep the air tube from the air pump (black box) to the diffuser max 10 feet.
    • Plug the power adaptor into the scent machine and then into the wall outlet.
    • Using the 24/7 Sunday – Monday internal digital timer set local time and hours of operation of the device.
    • Using the + and – buttons to control the scent intensity.
    • LCD display will indicate the scent level from 1 (low) through 20 (high).

    Remember, less is more! Start at the lowest setting and allow the scent to spread throughout your space before increasing the intensity.

    Or right click and “save as”

    FAQ – Air Stream Single™


    Q: What size room can Air Stream Single™ handle?

    The Air Stream Single™ is fully adjustable for different size areas. It is most effective in spaces of up to 7,000 square feet. Depending on the essential or aroma oil you use it may cover more area since some oils are more potent then others.


    Q: Where can I place the Air Stream Single™?

    You must place the Air Stream Single™ on a flat surface. If placing on the table top or a shelf, make sure it doesn’t tip. Alternatively, you can wall mount the diffuser with drum when connecting to your HVAC/AC system. If wall mounting the Air Stream Single™ drum with diffuser, make sure it is secured properly. Refer to the User Manual for more details and how to connect to HVAC (air conditioning and heating system).


    Q: Do I need to adjust Air Stream Single™?

    Yes! Air Stream Single™ is a very powerful device that can handle very large spaces such as casino floors, retail stores, gyms, spas, stadiums and much more. If the scenting system is set too high for the room size, it can cause discomfort for some people. Adjusting scent intensity is easy. Simply touch the up and down button on the device to adjust from level 1 (min) to level 20 (max). Start at level 1 and work your way up if needed.


    Q: How strong should I make the scent?

    Remember, less is more. The Air Stream Single™ allows you to get rid of bad odours and create a unique ambience with small amounts of scent. Unlike other air fresheners, the Air Stream Single™ can be adjusted with a simple touch. Human nose gets used to scent very fast, so if you don’t smell the scent anymore that doesn’t mean it’s not there. Simply leave the scented area and re-enter with a fresh nose to get a better feel of how strong it is.


    Q: What is the capacity of the Air Stream Single™ bottle?

    The Air Stream Single™ takes (2) half gallon drums or (8) 500 ml bottles of oil. The fragrance diffuser is designed to only use the AromaTech™ bottle specific to the diffuser and essential and aroma oils.


    Q: How long does the essential oil last in the bottle?

    The Air Stream Single™ uses (2) half gallon drums or (8) 500 ml bottle of aroma oils that will last approximately 8 months with daily usage running about 16 hours a day. To preserve your aroma oil, we highly recommend using the internal 24/7 timer and set it up so that the diffuser doesn’t run at night time unless required. Depending on the aroma oil you are using that time may increase or decrease. Some home fragrance oils diffuse a lot faster due to their consistency and viscosity.


    Q: What is the average oil consumption of the Air Stream Single™?

    Oil consumption strongly depends on the essential or aroma oil used. Essential oils diffuse faster then aroma oils. Average oil consumption ranges from 1 ml. – 3 ml. per hour.


    Q: What if my unit does not turn on?

    Check to make sure the power adaptor is properly plugged into the DC power jack and the electrical source. If hours of operation timer is set incorrectly and you are trying to diffuse during the time that the machine is programmed to be off the Air Stream single™ will not scent. Refer to the User Manual for more details.


    Q: How do I unlock the LCD display if it is locked and I can’t control the device?

    The Air Stream Single’s™ intuitive timer is designed to lock itself (shut off) after 10 seconds if not in use. To unlock the display simply press and hold the SET button for 5 seconds.


    Q: What if my unit does not scent or there is almost no scent coming out?

    Check first that there is an aroma oil in the bottle and the bottle is screwed in straight and snug. If there is fragrance in the bottle but you still don’t smell anything then either the device is in rest or pause mode, turned off, or the diffuser core is clogged and needs cleaning. Please see “Care & Maintenance” instructions.


    Q: How do I connect the Air Stream Single™ to the HVAC (air conditioning system)?

    Depending on the HVAC set up of your business and amount of air handlers that service your entire area, choose the air handler that covers the most area. Refer to the below diagram.

    1. Drill a 10 mm hole in the air supply duct.
    2. Make sure to drill a 10 mm hole before the duct splits to different areas of your space.
    3. The Air Stream Single™ comes with the air tube and an HVAC adaptor. Make sure the HVAC adaptor (brass fitting) is connected into the top of the Air Stream Single™ air pump.
    4. Keep the air tube length between 10 – 20 inches.
    5. Make sure the tube is always straight and not kinked, or has air pockets.
    6. Wall mount the Air Stream Single™ or stand it up on a shelf near the air duct where you will be connecting it to.
    7. Insert the air tube from the Air Stream Single™ to the air duct.
    8. Insert the tube with the airflow not against it.
    9. Seal it with HVAC tape.
    10. Start up the Air Stream Single™ and set your desired intensity level from 1-20.

    Q: Will the Air Stream Single™ scent machine cover my entire business?

    It can, but it depends on how big your space is and how many air handlers you have. If you have more then 1 air handler you will require and additional HVAC scenting system.


    Q: What type of oils can I put in my fragrance system?

    Use only AromaTech™ diffuser blends; other blends and oils may contain base oils that could result in clogging the device. Many single note essential oils should not be used in the diffuser. Single note essential oils may have a thick or heavy consistency that can clog the diffuser and cause it to stop diffusing scent. AromaTech™ diffuser blends have been carefully blended to be effective for you, and safe and easy to use in your cold-air diffuser.


    Q: Is Air Stream Single™ safe to use with children and pets?

    Yes. When used as directed and only with AromaTech™ essential and aroma oil blends, Air Stream Single™ is the safest cold-air diffuser available. Make sure to request SDS if you require more info about the oil being diffused.


    Q: How does Air Stream Single™ differ from aerosol and ultrasonic diffuser?

    Aerosol sprays diffuser very large particles that drop to the ground the moment they are sprayed, providing very high concentrations just in the area they were sprayed. The scent effect is very short and can’t be controlled. Ultrasonic diffusers use water and vibration to diffuse very tiny amounts of essential and aroma oils. With the Air Stream Single™, there is no diluting with water or other carrier oils required. The scent particles diffused suspend for several hours providing the most subtle and comfortable scented environment. The Air Stream Single™ creates, maintains and evenly provides a perfectly balanced scented environment continuously and in low dosage without alcohol, water, propellants or other harmful VOCs.


    Q: Is Air Stream Single™ Diffuser Eco-Friendly?

    AromaTech diffusers are the most Eco-friendly products on the market. Unlike aerosols, the Air Stream Single™ uses no propellants, phthalates and produces no harmful volatile organic compounds (VOCs). Unlike many air fresheners, Air Stream Single™ uses no ethanol or similar solvent to enhance the evaporation of essential and aroma oils.


    Q: Warranty and Support?

    All products designed by AromaTech™ come with a 1 year limited warranty. If you have any questions or issues simply call 1.877.347.5239 or email us at and we will take care you.

  • Customer Reviews

    Based on 9 reviews
    Air Stream Single for my Home

    The aroma is awesome (White Tea Thyme). Overall the air stream single is good. the downside is the programming. Not real easy and clear. Had to call the tech service person who walked me through it. Was even a little difficult for him. I suggested they need to get an APP for this system and make it easy and he agreed. We had to FaceTime to get my programming down. They could also make a video to walk people through the programming. The other issue is when you do the math based on their tables and the concentration rates along with the cost of the aroma oil you will be shocked to see how expensive it can be to have this running for a long time during the day. I had to program intervals and set the concentration fairly low. I will see how it performs over the next week. Overall their customer service was excellent to have my unit and oil shipped to a resort near their office in Phoenix when I was on vacation.

    Air Stream Single

    This is exactly what I was looking for, for a central system for home scents. Works great!

    Business Scenting

    I bought this scent machine for my business and it made a HUGE difference in our client experience and increases our bakery sales. Using Apple Pie and Fresh Bread. Store size is 2,000 sq.ft.

    Very happy! Highly recommended for every business looking to stand out and enhance their brand.

    Subtle and discrete

    My wife purchased this scent machine for my birthday:)). We have a 4,000 sq.ft. house with 2 ac units. We connected the Air Stream Single to only one ac unit so far and it works amazing. Super happy with the quality of the product and most importantly the quality of the fragrance oils. Very well made, the timer is easy to operate and it turns on and off at my set times which helps me save on oil. Definitely recommend this to anyone looking to scent their home. Will be buying another one when it goes on sale to cover the second floor of the house, Currently using Green Tea Lemongrass and occasionally switching up to White citrus. A quick not to AromaTech: would love to see this controlled from a phone app!

    This one device is more than enough

    It does all it's supposed to do. We're trying out al the bottles.