Benefits of HVAC Scenting:
- Whole-home or business coverage with one system
- Even, long-lasting fragrance distribution
- Safe, eco-friendly, and hypoallergenic aroma oils
- No residue, no heat, no water required
- Professional and discreet scenting solution
HVAC Scenting Machines & HVAC Scent Diffusers
Professional HVAC Scenting Systems for powerful scent distribution throughout the whole home, large residential areas, or commercial spaces.
HVAC scenting provides an even distribution of scent in your entire home.
All Aroma Designers’ HVAC scenting diffusers are based on waterless cold air diffusion technology which transforms liquid (fragrance oil) into nanoparticles that dissipate into the air as fine aroma mist.
Professional HVAC Scent Machines.
Easy Step-by-Step Installation
Unlike regular humidifiers, cold-air diffusion doesn’t use heat or water to create mist. This keeps fragrance oils pure and effective while maximizing efficiency.
Installation is quick and simple — just connect the diffuser to your HVAC duct, secure the push-in fitting, insert the fragrance bottle, and set your preferred intensity.
HVAC Installation
In order for the aroma mist to carry through the air duct, the AC must be operating or the blower fan must be turned on. If the AC (or fan) is off, the aroma mist will stay in the air duct and won’t reach the intended space. If the diffuser is operating for a prolonged period of time with the AC fan being off there will be unwanted scent buildup in air ducts and could cause diffuser or air handler damage.
HVAC setup typically requires intensity levels 10% to 15% higher compared to standalone diffuser setup. Air duct passage creates an additional volume of space through which the aroma must travel and some capacity is lost due to the extended volume of space. With a standalone setup, the aroma covers a smaller volume of space and has a slower transit time.
Installing the air diffuser requires adequate space to accommodate your aroma diffuser and must be close to the air ducts. The ideal placement of the diffuser tube opening is after the air handler and before the first air register (please refer to the diagram above). Please ensure the air duct opening is further away from the air handler body to prevent possible interference.
The plastic tube that connects the diffuser with the air duct should be kept as short as possible and at the near-vertical pitch. Avoid ‘sagging’ formations in the tube as this could cause oil accumulation in the lower part of the tube and possibly damage your diffuser.
The diffuser plastic tube entering the air duct should be approximately three to four inches inside the duct and pitched at about 10% downward angle just to ease the aroma flow.
Ensure proper insulation of the opening by using aluminum tape and secure the plastic tube to one of the hard areas to minimize any tube movement.
The placement of the diffuser should be in a dry, clean, moist free environment
nearby a proper 110V power outlet.
FAQ & Contact Form
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Frequent Questions
HVAC Connection
No! Not recommended to place aroma diffusers in the attic space if the temperature is not controlled. Extreme variations in temperature will cause changes in oil viscosity, which it terms affect the misting process. Hot temperatures could make the oil too liquidly and cause oil spills. Cold temperatures could make the oil too dense and not atomize at all.
Connecting the aroma diffuser to your HVAC thermostat for automatic control is possible and should be done by a licensed professional only. In principle, this approach entails having a power relay switch (sold separately in Home Depot and electronic stores) being triggered by the thermostat and on/off cycle the 110V source of the aroma diffuser.
Leveraging the thermostat control for On/Off cycles ensures 100% synchronization between your HVAC and aroma diffuser and negates the need to have the air handler fan On all the time. Some companies have attempted to use the pressure switch approach, but based on our observations thermostat connection control has superior accuracy. The pressure switch approach is prone to false-positive/negative as precise pressure calibration in the air ducts is often not possible.
You can watch how to connect your Aroma Designers scent machine with your HVAC.
Learn more information about HVAC scenting.
Please, check the connection between the plastic tube coming from the diffuser and your HVAC, the connection should be snug and properly sealed.
Our diffusers transform the fragrance oils into nano-particles that can travel effortlessly throughout the air ducts and vents without any oil residue. The aroma diffusers that come with an HVAC adaptor (brass fitting and plastic tube) can work with your HVAC system.
If you have elected for an HVAC type connection, the HVAC fan must be constantly turned on in order to dissipate the aroma particles. Not having the HVAC fan ON for a prolonged period of time can also damage your aroma diffuser.
No additional servicing is required for HVAC type connection. For optimum aroma diffuser performance please ensure proper HVAC connection, dust-free diffuser placement and timely fragrance oil refills also help.
Scent Diffuser to HVAC Connection
Enjoy consistent, luxurious fragrance throughout your entire home or business with our HVAC scent diffusers. Designed to integrate directly into your central heating and cooling system, these professional-grade machines deliver even scent distribution to every room.
With cold-air diffusion technology, our HVAC scenting is residue-free, energy-efficient, and preserves the therapeutic integrity of fragrance oils. Each unit comes with a durable metal push-in fitting and a flexible plastic tube for easy installation into your air ducts.
”The HVAC scent diffuser was installed quickly and works perfectly! My whole space smells amazing—couldn’t be happier with the service and results.
A. SmithMiami, FL