OLMO

OS-RMS18-230VO

Pickup currently unavailable at Santa Clara

Standard shipping on all orders
Manufacturer warranty included
Product specifications
Brand OLMO
Power Source 208-230V, 1Ph, 60Hz
EER Rating 13.3
SEER Rating 22.0
Type Multi-zone unit
Refrigerant type R454B
BTU 18,000
Package dimensions 39x28.75x17.75
Package content
  • Sierra Outdoor Unit
Compatible products

Sierra Outdoor

The Sierra Outdoor unit offers a high-performance solution for both single and multi-zone systems. With multi-voltage support and exceptional energy efficiency, it provides dependable comfort in a compact, modern design built for versatility.

Extreme Ready

Built for Every Forecast

Reliable in Any Weather

Engineered to endure extreme conditions, this outdoor unit maintains reliable operation in scorching heat, freezing cold, heavy snow, or rain. With durable construction and proven resilience, it keeps your system running strong season after season.

Energy Saver

Precise Temperature Control

Intelligent Power Adjustment

The system continuously adjusts its operation in real time to maintain your preferred temperature with minimal fluctuations. This intelligent control enhances energy efficiency, lowers noise levels, and ensures a steady, comfortable environment throughout the day, delivering reliable performance and improved overall comfort.

Auto Check

Troubleshooting Made Easy

Built-In System Health Checker

The self-diagnostic system continuously monitors the unit’s performance and detects any abnormalities in real time. When an issue arises, it automatically displays a clear error code, allowing for faster diagnosis and quicker repairs—minimizing downtime and simplifying maintenance.

Take Control with the App

Install the app to monitor and adjust your HVAC system from your phone at any time.

Device screen

Frequently Asked Questions

Who do you sell to?

We sell exclusively to licensed HVAC contractors and industry professionals. Professional installation by a licensed technician is recommended to ensure proper installation, system performance, code compliance, and maximum manufacturer warranty coverage.

What brands do you carry?

We specialize in high performance brands like Cooper and Hunter along with ductless and mini split systems that meet California low GWP and energy compliance standards. We also stock trusted installation and service brands including NAVAC, RectorSeal, Fieldpiece, Armbridge, Olmo, and Diversitech.

Do you stock equipment locally?

Yes. We have a ton of equipment and accessories in stock across the Bay Area and Sacramento, available for local pickup or freight shipping. More locations coming soon.

Can I get help sizing a system?

Absolutely. We help contractors with equipment selection, line set sizing, refrigerant matchups, and other technical questions. Reach out via phone or email for support.

Do you offer volume discounts?

Yes. We offer contractor pricing and volume breaks for bulk orders. Reach out directly if you're planning a multi-unit install or need project pricing.

Do you help with warranty claims?

Yes, you will need to first reach out to the Cooper & Hunter Technical Support line 1 800-977-0722 to go through troubleshooting, and if it is determined to be a defective unit, we will work with the manufacturer and you as the customer to source you a replacement unit under warranty. If it is determined to need replacement parts, you as the customers will work with Cooper & Hunter to source replacement parts.

Can I buy online?

Yes. As long as you have a licensed contractor account with us, you can place orders online for delivery or pickup at any of our branch locations.

What makes CoolMan different?

We’re not just a supplier — we’re a partner. We know the ductless business, we understand California codes, and we move fast to help you win jobs and keep clients happy.