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OLMO - R454B - - - Indoor Unit - Wall Mount - Sierra - 208-230V

OLMO Wall Mount R454B 18,000 BTU

OLMO Wall Mount R454B 18,000 BTU

$310.62 USD
$334.00 USD $310.62 USD
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Installation Kit
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OLMO Multi-Sierra Indoor — 18,000 BTU, R454B — OS-RM18SW-230VI

Wall-mount indoor unit with Smart Connect. SEER2 up to 21. Quiet, high-airflow comfort. Pairs with OLMO Multi-Sierra outdoor units.

18,000 BTU/h SEER2 up to 21 R454B Wi-Fi included 1/4″–1/2″ lines 208–230V, 1Ph 45/41/39 dB(A)

Why pros choose this indoor

  • Smart control: Wi-Fi Smart Connect app per room.
  • Comfort modes: Sleep, Turbo, Eco, multi-speed fan, timer, auto swing.
  • High airflow: up to 647 CFM for faster conditioning.
  • Quiet: 45/41/39 dB(A) for large bedrooms or living areas.
At-a-glance
Model
OS-RM18SW-230VI
Refrigerant
R454B (system)
Controls
Remote + Wi-Fi app
Lines
1/4″ liquid · 1/2″ gas

What’s included

  • Indoor unit OS-RM18SW-230VI (18,000 BTU)
  • Wi-Fi adapter (17310900A05963)
  • Wireless remote control
  • Installation & user manuals
  • Manufacturer warranty

Installation kit with pre-flared copper, drain, and communication cable is optional and must be selected if needed.

Tech specs

Spec Details
Model OS-RM18SW-230VI
Capacity (rated) 18,000 BTU/h
SEER2 / EER2 (up to) 21 / 12.95
Refrigerant R454B (with matching Multi-Sierra ODU)
Refrigerant piping (liq/gas) 1/4″ / 1/2″
Power 208–230 V, 1-Phase, 60 Hz
Voltage range 187–253 V
MCA / Max fuse 3 A / 5 A
Indoor noise (H/M/L) 45 / 41 / 39 dB(A)
Indoor airflow (H/M/L/Quiet) 647 / 588 / 482 / 382
Dehumidification 2.6 pints/hour
Unit dimensions (W×H×D) 42 3/4 × 12 3/8 × 9 5/16 in
Packing dimensions (W×D×H) 46 1/16 × 15 3/8 × 12 7/16 in
Net / Gross weight 30.9 / 37.5 lb
Filter size (W×D×H) 16 1/8 × 9/16 × 15 1/8 in
Drain connection 3/4″
Controller L1-12
Operating range (cool / heat) 61–86 °F / 61–86 °F

Performance depends on the matched Multi-Sierra outdoor unit and system design.

Performance features

  • Remote control included
  • Smart Connect app control
  • Sleep, Turbo, and Eco modes
  • Multiple fan speeds and timer
  • Auto-swing louvers
  • Self-clean mode
  • LED display

Documents

Warranty

  • 5-year compressor limited warranty
  • 2-year parts limited warranty (licensed HVAC install and registration within 60 days)
  • 1-year remote control

Important

Installed by a licensed HVAC professional. Registration within 60 days. Select an installation kit if needed: pre-flared copper, drain hose, communication cable, wrapping bands.

FAQs

Does this include Wi-Fi?
Yes. Smart Connect Wi-Fi adapter is included.
Which outdoor units is it compatible with?
All OLMO Multi-Sierra outdoor units sized for an 18,000 BTU zone and using R454B.
What line sizes are required?
1/4″ liquid and 1/2″ gas per Multi-Sierra specifications.
How quiet is it?
Indoor sound is 45/41/39 dB(A) on H/M/L.
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