Previous page Next page How do I choose essential oils? It is recommended to choose special essential oils for diffusers, rattan essential oil/perfume is not applicable to our machine. Is it need to add water to the essential oil? This diffuser is a waterless diffuser. Please do not add water to the essential oil to dilute it, it may cause no fragrance to be emitted. How do I connect the HVAC? There is a connection screw and HVAC hose included in the package. Install the screw into the mist outlet of the diffuser. Then simply connect the screw to the fresh air system with the air conditioning hose. What should I do if the machine does not work? Please send us your problems by text, of course pictures and videos are better. Our technical staff will assist you to solve the problem as soon as possible. Know More Information Scent Air Machine Add to Cart Scent Air Machine Buying Options Scent Air Machine Add to Cart Scent Air Machine Buying Options Customer Reviews 4.1 out of 5 stars 53 2.9 out of 5 stars 9 3.7 out of 5 stars 21 4.1 out of 5 stars 11 Price $229.99$229.99 — $99.99$99.99 — Capacity 800ml 300ml 300ml 800ml Voltage 100-240V 100-240V 100-240V 100-240V Size 269*110*203mm 180*70*254mm 158*72*197mm 280*120*279mm Coverage 1500-3000 sq.ft. 500-1500 sq.ft. 500-1500 sq.ft 3000-5000 sq.ft. Suitable for HVAC ✔ ✔ ✘ ✔ With Touch Screen Panel ✔ ✔ ✘ ✔ With App Control ✔ ✔ ✔ ✔ Recommended Use Scenarios Home, Office, Hotel, etc,. Home, Office, etc,. Home, Office, etc,. Home, Office, Hotel, etc,. Noise ＜50dBa ＜35dBa ＜30dBa ＜45dBa