• White air conditioning unit with a fan and OLMO branding on a white background
1 1

OLMO - R410A - 20 - 2 zones - Outdoor Condenser - Sierra - 208-230V

OLMO Multi-Zone R410A Outdoor Condenser 18,000 BTU (1.5 Ton)

OLMO Multi-Zone R410A Outdoor Condenser 18,000 BTU (1.5 Ton)

$784.55 USD
$923.00 USD $784.55 USD
Sale Sold out
Shipping calculated at checkout.
OLMO logo

OLMO Multi-Sierra 18,000 BTU Outdoor Heat Pump — OS-MSR18-230VO

Up to 2 zones. Inverter heat pump with up to 21 SEER2 and 12.5 EER2. For Multi-Sierra wall-mount indoor units.

18,000 BTU/h cool & heat Up to 2 zones SEER2 up to 21 EER2 up to 12.5 HSPF2-5: 8.53 HSPF2-4: 10.34 R410A 208–230V, 1Ph, 60Hz

Why pros choose this outdoor unit

  • Two-zone flexibility: pairs with up to two wall-mount IDUs.
  • Efficient inverter: up to 21 SEER2, 12.5 EER2.
  • Cold-weather heat: operation down to −13°F per spec range.
  • Clear electrical: MCA 21 A, max fuse 30 A.
At-a-glance
Model
OS-MSR18-230VO
System
Multi-zone (up to 2)
Refrigerant
R410A
Sound
55 dB(A)

What’s included

  • Outdoor inverter heat pump unit OS-MSR18-230VO
  • Owner/installation documentation (per shipment)

Indoor units, line sets, communication cable, and accessories sold separately.

Tech specs

Spec Details
Model OS-MSR18-230VO
System type Multi-zone inverter heat pump
Cooling capacity (nom.) 18,000 BTU/h
Heating capacity @ 47°F 18,000 BTU/h
SEER2 / EER2 (up to) 21 / 12.5
HSPF2-5 / HSPF2-4 8.53 / 10.34
Refrigerant R410A
Refrigerant piping (liq/gas) 1/4″ / 3/8″
Refrigerant precharge 25 (per spec)
Additional charge 0.16 per ft for 1/4″ and 3/8″ liquid lines
Max pipe length (indiv./total) 82 ft / 164 ft
Max height difference 15
Power 208–230 V, 1-Phase, 60 Hz
Voltage range 198–253 V
MCA / Max fuse 21 A / 30 A
Outdoor noise 55 dB(A)
Outdoor air flow 1.85 (per spec)
Ambient temp (heat / cool) −13~75.2°F / 14~114.8°F
Unit dimensions (W×H×D) 33-7/8 × 26-3/8 × 12-1/4 in
Packing dimensions (W×D×H) 39 × 17-3/4 × 28-3/4 in
Net / Gross weight 116.8 / 125.6 lb
Compatible IDUs OLMO Multi-Sierra wall-mount indoor units (up to 2 zones)

Confirm port count, line sizes, and charge against the submittal and installation manual for your zone mix.

Documents


Warranty

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

FAQs

How many rooms can this support?
Up to 2 zones when paired with compatible Multi-Sierra wall-mount indoor units.
What refrigerant does it use?
R410A with factory precharge. Add charge per line length as specified.
What electrical protection is required?
MCA 21 A and max fuse 30 A at 208–230 V single phase. Follow local code.
What are the operating temperature ranges?
Heating −13~75.2°F. Cooling 14~114.8°F.
View full details