Vevor HVAC Scent Diffuser A305M (White, 850ml)

How does the HVAC connection work and what do I need?

The diffuser connects to your existing HVAC system through the ductwork. Your HVAC blower must be running for the scent to distribute - no fan operation means no scent distribution. The unit works with most standard heating and cooling systems. You'll need access to your ductwork for installation and the mounting hardware is included in the package.

What coverage area can I expect and how is it measured?

The unit covers between 100-4500 square feet depending on your HVAC system capacity and room layout. Larger coverage requires higher intensity settings and more frequent HVAC blower operation. The coverage area depends on your ductwork design, ceiling height and how often your heating or cooling system runs throughout the day.

How long does the 850ml oil capacity last?

Oil consumption varies from 0.1 to 2.0 grams per hour depending on your intensity setting. At minimum settings, the 850ml capacity can last several weeks. Higher intensity levels will consume oil faster but provide stronger scent coverage. The large capacity reduces the need for daily refills unlike traditional diffusers.

Can I control the diffuser when I'm away from home?

The Bluetooth control requires you to be within range of the device for initial setup and changes. However, once you program schedules and intensity levels, the unit continues operating according to those settings even when disconnected. You need to be present to make real-time adjustments but scheduled operation works independently.

What type of oils can I use and are there restrictions?

The cold air technology works with most essential oils and fragrance oils designed for diffusion. Avoid thick or viscous oils that might clog the atomisation system. The unit preserves oil purity without water dilution, so you get the full benefit of your chosen fragrances. Always use oils specifically designed for air diffusion systems.

How quiet is the operation and can I use it overnight?

The unit operates at 52dB or below, which is quieter than most household appliances. This noise level is suitable for bedrooms and won't disturb sleep. The quiet operation makes it perfect for overnight use, offices, spas and other environments where noise levels matter. Most users report it's virtually silent during operation.

What maintenance does the diffuser require?

The cold air technology eliminates the need for daily cleaning that water-based diffusers require. You'll need to refill the oil reservoir when empty and occasionally clean the unit according to the manual instructions. The system doesn't leave water residue or require frequent maintenance like traditional aromatherapy machines.

Can I mount this on any wall and what's included?

The unit can be wall-mounted using the included hardware set or used freestanding. Wall mounting requires a sturdy surface that can support the 2.36kg weight when full. The mounting hardware accommodates most wall types. Freestanding operation gives you flexibility to move the unit between rooms or adjust positioning as needed.