Diffuser Setup & Install Guides

Diffuser Setup & Install Guides

Everything you need to get your Simply Modern Scents diffuser up and running. Find your model below.

HVAC Integrated

SMS1000

Our flagship whole-home unit. Connects directly to your HVAC system so fragrance travels through your existing ductwork to every room.

Before you start: The SMS1000 pairs over Bluetooth using the Scent Master Pro app. Download it from the App Store or Google Play first, and keep your phone within a few feet of the unit while pairing. A separate WiFi setup video is coming soon.

What you'll need

  • Drill and bit set
  • Ductwork tape
  • Mounting hardware (included)
  • SMS1000 unit and oil bottle
  • Scent Master Pro app on your phone

Plan on 30 to 45 minutes for a typical install.

Installation steps

  1. Pick your location. Mount on or near the supply plenum of your air handler, somewhere you can reach easily. You'll be back here for oil changes, so don't bury it.
  2. Mark and drill. Mark your hole on the supply duct and drill it to fit the tubing. Clear the metal shavings as you go.
  3. Seal the opening. Seal around the tubing with ductwork tape. A tight seal keeps conditioned air where it belongs.
  4. Mount the unit. Secure it with the included hardware and keep it level — the oil bottle threads in from below.
  5. Connect the tubing. Keep the run short and avoid sags. Low spots collect oil and cause buildup — this is the most common DIY issue we see.
  6. Load the oil bottle. Thread it in and hand tighten. Snug is enough.
  7. Power up and pair. Plug in, open Scent Master Pro, follow the Bluetooth pairing prompts.
  8. Set your schedule. Start low. Most homes need far less than expected, and it's easier to turn up than to air out a house.
Set your thermostat fan to ON, not AUTO. Scent needs moving air to distribute, and continuous airflow keeps oil from pooling in the tubing.
Single Room

SMS150

Standalone unit for larger single rooms and small commercial spaces. No ductwork, no tools — fill the bottle, plug in, pair the app.

Video coming soon.
Small Space

SMS60

Compact standalone unit for bedrooms, offices, bathrooms, and other smaller spaces. Same simple setup — fill, plug in, pair.

Video coming soon.
Vehicle

Car Diffuser

Compact unit for sedans, SUVs, and trucks.

Video coming soon.
Troubleshooting

Common Issues

  • Won't pair. Confirm Bluetooth is on, you're within a few feet of the unit, and no other phone is currently connected to it.
  • Weak or no scent. Check the blower is running continuously, the bottle isn't empty, and the schedule is actually active in the app. Lighter scents also need more output to carry the same way — increase the spray frequency and shorten the pause time between sprays.
  • Oil pooling in the tubing. Almost always a sag in the line or a blower on AUTO. Fix both.
  • Too strong. Reduce the spray duty cycle rather than shortening run times — you'll get more even coverage.
  • Give it a day. Scent builds gradually through a house. Don't crank settings on day one.

Prefer a professional install?

If you're within about 60 miles of Cincinnati, our team handles installation across Ohio, Kentucky, and Indiana. We bring everything, do the work, and set up the app with you before we leave. This is the route we recommend for new builds.

Book Your Install

Installing a plug-in unit instead? Electric diffuser installation

Every diffuser carries a 1 year hardware warranty, extended to 2 years with company-approved oils.