Williams Montara 1500W Heat Pump - HP003

Williams

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Model

HP003

232912

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Description

THIS PRODUCT HAS BEEN DISCONTINUED BY THE MANUFACTURER

Montara Heat Pump

All-in-one heat pump delivers efficient heating and cooling without an outdoor unit, ideal for maintaining building aesthetics while providing quiet, year-round comfort

The Williams Montara Heat Pump is a compact, all-in-one heating and cooling system designed for spaces where traditional outdoor units aren’t practical or allowed. Using advanced inverter technology, it delivers efficient, quiet performance while preserving the exterior appearance of your home or building. Perfect for residential or light commercial applications, it provides year-round comfort in a sleek, space-saving design.

Key Benefits

1500W Performance Provides reliable heat or cold output
No Outdoor Unit Required Maintains building exterior appearance
Heating & Cooling in One Provides year-round climate control
Ultra-Quiet Operation Runs as low as 35 dB for comfort
Inverter Technology Adjusts output for improved efficiency and comfort
Compact Slim Design Fits easily in tight or limited spaces
Ideal for Retrofits Replaces PTAC and through-wall systems easily
Low Energy Consumption Designed for efficient daily operation
Flexible Wall Installation Install low or high on interior walls

No Outdoor Unit Design

The Montara system operates without a traditional outdoor condenser, making it ideal for buildings where exterior modifications are restricted or undesirable.

Year-Round Heating and Cooling

This packaged heat pump provides both heating and cooling in one system, with an additional electric heater for enhanced performance in colder conditions.

Quiet Inverter Performance

Equipped with DC inverter fans and compressor technology, the Montara adjusts output based on demand, delivering quiet and efficient operation—even during nighttime use.

Compact, Space-Saving Design

With a slim profile and minimal depth, this unit fits seamlessly into a variety of spaces without taking up unnecessary room or disrupting interior design.

Flexible Installation Applications

Designed for both low-wall and high-wall installation, the Montara adapts to different layouts and is suitable for residential, commercial, and renovation projects.

Efficient Airflow & Comfort Control

Advanced airflow design and variable speed operation help maintain consistent indoor temperatures while improving comfort and energy efficiency.

Warranty

The Williams Montara Heat Pump includes a limited manufacturer warranty covering parts and performance under normal residential use. 1-Year Limited Parts Warranty.

Installation Disclaimer

Installation must be completed by a qualified HVAC professional and follow all local building and electrical codes. Proper installation is required for safe operation and optimal performance.

Product Specifications

More Information
Williams Montara 1500W Heat Pump - HP003
Feature	Spec
SKU	HP003
Weight (in lbs)	101.500000
Brand/Manufacturer	Williams
Cooling BTU	8,000 BTU
Heating BTU	8,000 BTU
EER	8.9
Wattage	720 watts
Height	21.69"
Width	39.37"
Depth	6.5"
Warranty	1-Year Limited Parts Warranty
Resources	Williams Owner's Manual Williams Specification Sheet You will need Adobe Acrobat Reader to view PDF documents.
Safety Information	PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here.

Reviews

Questions and Answers

Customer Questions

What makes a no-outdoor-unit heat pump different from traditional systems?

Hello, thank you for reaching out. The Montara heat pump is fully self-contained, eliminating the need for an external condenser while still providing efficient heating and cooling. If you have additional questions, please feel free to reach out over the phone to our Customer Service line at 1-888-901-5460. Have a great rest of your day.

Can the Montara heat pump be a replacement for PTAC or through-the-wall units?

Hello, thank you for reaching out. Yes, it’s specifically designed as a modern replacement, offering improved efficiency, quieter operation, and a cleaner look. If you have additional questions, please feel free to reach out over the phone to our Customer Service line at 1-888-901-5460. Have a great rest of your day.

Can the Montara heat pump effectively heat and cool small spaces?

Hello, thank you for reaching out. Yes, it is designed for residential and light commercial spaces, delivering consistent temperature control year-round. If you have additional questions, please feel free to reach out over the phone to our Customer Service line at 1-888-901-5460. Have a great rest of your day.

How quiet is the Montara heat pump during operation?

Hello, thank you for reaching out. It uses inverter technology to operate at low noise levels, especially during nighttime or low-speed settings. If you have additional questions, please feel free to reach out over the phone to our Customer Service line at 1-888-901-5460. Have a great rest of your day.

Is the Montara heat pump energy efficient compared to traditional HVAC systems?

Hello, thank you for reaching out. Yes, inverter-driven technology adjusts output based on demand, reducing energy consumption and improving efficiency. If you have additional questions, please feel free to reach out over the phone to our Customer Service line at 1-888-901-5460. Have a great rest of your day.