How to install.

HVAC Installation Instructions

Reference these instructions to understand the proper placement for your Levona Scent Diffuser.

Through the return air duct the air comes into your HVAC system. The Furnace/AC Coils heat or cool that air (depending on what you’re running).

There is exhaust that comes out of the furnace. DO NOT drill a hole into any exhaust ductwork. This can emit harmful fumes from your furnace into your home. If you are unsure, consult with an expert HVAC technician.

The “air supply” duct is where the Levona Scent diffuser should be installed. This is where the air is pushed out from your HVAC system to the rest of the home (your HVAC fan will need to be on in order for there to be forced air).


Step 1: Place the mounting template on the wall next to the supply ductwork.

Step 2: Drill the screws into the mounting guide, drilling one screw in each + symbol. Be sure not to drill the screw all the way in. When installing your diffuser on sheetrock, be sure to use the provided anchors. The anchors are not needed if you are mounting onto wood.

Before mounting, insert the cord into the back of the diffuser. Do not plug into a power outlet until installation is done. Match the holes on the rear side of the diffuser with the mounting screws, and mount it. (Ensure the diffuser is levelled, or placed on a flat surface, in order to prevent damage to the machine or uneven scent flow).

Step 3: After mounting the diffuser, twist the nozzle (by hand) on the top of the machine.

Step 4: Grip the atomizer and pull the diffuser refill upward. Use the keys provided and turn ¼ of the way counter clock-wise to unlock it.    

 Step 5: Hold the fragrance bottle into place and unscrew the diffuser refill from it (it should be empty).

Step 6: Place the dip tube into the new fragrance bottle and align with the refill diffuser. Screw the new bottle into it until tight.


Step 7: Place the refill bottle into the diffuser. Align the diffuser markings to push back into place. It should be flush with the top of the machine. Use the provided keys to lock it.

Step 8: Place the tube into the top of the nozzle, it will lock into place automatically.
Step 9: Stretch the tube so there are no kinks or loops.
Step 10: Measuring with the tube, decide where to drill into your supply duct.


Step 11: Drill a hole for the tube to be inserted by using a 3/8" drill bit.

Step 12: Insert the tube into your supply ductwork. It only needs to be ½ - 1 Inch inside the duct. If the tube is too long simply cut with scissors.

Installation FAQs & Troubleshooting:

The drill size was too small for the tube.
The proper drill size is 3/8″, if you don’t have that size then you can take the drill bit you do have and wiggle it around the hole to slower increase the hole size.
Where does my diffuser go?
Your diffuser should be mounted to the wall within the tube’s reach of the supply air ductwork.
Will the hole affect my HVAC ductwork?
No, the hole will not affect your ductwork or the efficiency of your system. 

If I move, can I take the unit with me?
Yes! Of course. Just turn off the diffuser, pull the tube out of the duct work, and take the diffuser off the wall and to your new house! (remember to tape over the hole in the ductwork).
How long does installation take?
Installation is quick and easy. Most people take under 15 minutes to complete it.
 The scent is faint no matter what setting it's at, what do I do?
If your scent is faint no matter what you do then try these quick fixes: make sure all your vents are open and turn your HVAC system’s fan to the “ON” setting.
Make sure the fan for the diffuser is on.
Also, make sure the atomizer is pushed all the way in and locked into place.

How long is the tube?
The tube is 3 feet long.
Should the diffuser be locked into place?
Locking the diffuser lid is the best way to keep the diffuser from getting out of place and not being able to diffuse properly.
I don't have anywhere to mount my diffuser in my utility room
The diffuser can also be placed on a shelf or be sitting on the ground. Just make sure it is away from water, heat, children, and pets.
My diffuser is not diffusing/there is no fragrance mist
Check to make sure the diffuser is currently diffusing (the working seconds are counting down) and pull up on the atomizer (see picture). Look inside the diffuser to check that the fan is spinning. If your fan is not spinning follow these steps: make sure your diffuser is running (the W or “working” seconds are counting down), touch and hold the “BACK” button on your diffuser until a small fan icon appears in the corner of the screen. This will turn the fan back on. If you need further assistance, please contact support.