Light Commercial Heat Pump Heater

Weatherproof residential heat pump for landed homes. Ideal for 8 to 10 baths.

Heat Pump Technology

Heat pumps work like air conditioners in reverse, saving you over 75% of energy by absorbing ambient warm air.

Leading American Technology

A. O. Smith has been refining water heating technology for the last 140 years. Every A. O. Smith heater is equipped with cutting edge, patented technology. Other heaters may look like A. O. Smith heaters but they do not work the same way.

Highest Efficiency Heat Pumps

Energy Factor (EF) is a measure of overall efficiency. A. O. Smith technology has been refined to produce the highest efficiency heat pumps in the market.

Built to Last

A. O. Smith’s patented Blue Diamond formula makes its water heater tanks the toughest and most durable tanks in the market.

The longest lasting heater in the world was made by A. O. Smith.

No OEM Factories

Other manufacturers use OEM factories so they can give you cheaper products, but every A. O. Smith water heater and its components are manufactured in-house.

3 Year Full Warranty

Other heaters only provide full warranties for one year. All A. O. Smith products are fully guaranteed for 3 years – parts and labor, making us the longest water heater warranty provider in Singapore.


Older heat pumps are designed with separate compressors. The central heat pump is an integrated system.

Integrated systems are perfect for your home because installation is a breeze and maintenance is simplified.

Heat pumps work like air conditioners in reverse. They move heat from one place to another.

Integrated systems are perfect for your home because installation is a breeze and maintenance is simplified.

Heat pump Technology

Heat pumps are the most efficient water heating systems.

In tropical climates, heat pumps are even more energy saving than solar heaters.

Other Features

Temperature Controls

Adjust your water heater temperature to heat less so you can save more.

Blue Diamond™ Tank

Patented tank lining makes A. O. Smith heaters the toughest in the market.

Blue Diamond™ Element

A. O. Smith manufactures in-house elements of the highest heating efficiency.

Built In Timer

System goes into energy saving mode on its own. No need to turn your heater off and on.

High Density Insulation

Reduce standby heat loss and lower energy costs.

Dual Condenser

Patented dual condensers ensure high efficiency heat transfer.

Product Specifications

Model Length (mm) Width (mm) Height (mm)
CAHP-80 910 610 1670
CAHP-120 990 711 1700

Specs CAHP-80 CAHP-120
Rated volume (L) 304 456
Power, heat pump mode (kW) 1.25 1.25
Power, electric mode (kW) 4.2 4.2
Voltage/frequency (V/Hz) 220~/50 220~/50
Temperature range (°C) 35 – 82 ± 5 35 – 82 ± 5
Max/min ambient temperature (°C) 5 – 48 ± 5 5 – 48 ± 5
Noise level (dB) ≤ 52 ≤ 52
Rated tank, inlet/outlet pressure (MPa) 0.8 0.8
Inlet/outlet connection (inches) ¾ ¾
Waterproof grade IPX4 IPX4
Net weight (kg) 165 198