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Westinghouse C3.9 kW, H3.6 kW Reverse Cycle Box Aircon W/ LCD Remote
WWH39HWA
$949
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Product Overview
Key Features
- 3.9 kW cooling and 3.6 kW heating capacity
- 1.5 star cooling and 1 star heating energy ratings
- Eco, low, medium and high fan speed settings
Key Specifications
- Brand:
- Westinghouse
- Model Number:
- WWH39HWA
- Cooling Capacity (kW):
- 3.9
- Heating Capacity (kW):
- 3.6
- Energy Rating - Cooling in Average Climate (Star):
- 1.5
- Energy Rating - Heating in Average Climate (Star):
- 1
- Timer:
- Yes - 12 Hour
Heating & Cooling
- Maximum Airflow (m3/hr):
- 2376
Options
- Controls:
- Buttons & Remote Control
- Programs:
- Sleep mode
General Information
- Type:
- Reverse Cycle Box Air Conditioner
- Noise Level (dBA):
- Indoor: 50, Outdoor: 60
- Speeds:
- 4
- Additional Features:
- Fresh air return
Warranty
- Manufacturer's Warranty:
- 5 Year
Product Dimensions
- Product Height (mm):
- 428
- Product Depth (mm):
- 700
- Product Width (mm):
- 660
Box 1 Dimensions
- Box 1 Height (mm):
- 490
- Box 1 Width (mm):
- 736
- Box 1 Depth (mm):
- 790
- Box 1 Weight (kg):
- 55
Product Reviews of Westinghouse C3.9 kW, H3.6 kW Reverse Cycle Box Aircon W/ LCD Remote
Overall Rating Snapshot
5 out of 5 stars from 1 review
100% of users recommend this product
Good Value Appliance
Easy swap for my old Kelvinator air con. Nice and cold
Ali Walker
Confirmed purchase 5 October 2025
Published on 28 October 2025
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
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ABOUT THE GOOD GUYS REVIEWSThe Good Guys product reviews are collected from verified purchasers who may have received an incentive in return for providing an authentic review.
The below information is AI generated based on Australian websites information around this item. We have done our best to ensure its accuracy but suggest verifying any information within this tab before purchasing.
At a glance
This reverse cycle window wall air conditioner is a practical all-in-one option for bedrooms, studies and small living areas up to about 25 square metres. It offers both cooling and heating, handy remote control, sleep mode and fresh air return in a compact format. Its main trade-off is modest energy performance, with a 1.5 star cooling rating and 1 star heating rating compared with more efficient premium systems.
What it’s great for
- Small Room Cooling
- Small Room Heating
- Bedroom Comfort
- Study Rooms
- Compact All-in-One Installation
- Replacement for Older Window Wall Units
Where it works best
- Bedrooms
- Studies
- Small Living Areas
- Apartments
- Units
- Compact Homes
Who it’s for
- Apartment Dwellers
- Renters with Compatible Openings
- Homeowners Replacing Existing Box Aircons
- Small-Space Households
Things to consider
It is convenient and compact, but its 1.5 star cooling and 1 star heating ratings mean it is less energy efficient than many newer split systems or higher-end inverter alternatives.
Apartment cooling suitability
Good for apartments or units with a compatible window or wall opening, especially where a split system is not practical.
Diy installation friendliness
7/10 - simpler than a split system because it is an all-in-one box unit, but still needs a suitable opening and secure fitment.
Noise level vs category
7/10 - 46 to 50 dBA indoors is fairly typical for a window wall unit and acceptable for most small rooms.
Energy efficiency score
4/10 - functional rather than highly efficient, with a 1.5 star cooling rating and 1 star heating rating.
Key benefits
- Reverse cycle operation: Provides both cooling and heating from one unit for year-round comfort.
- 15 to 25 square metre suitability: Well matched to bedrooms, studies and other small to medium rooms.
- LCD remote control: Lets you adjust temperature, mode and fan speed from across the room.
- Four fan speeds: Gives you eco, low, medium and high airflow options to better match comfort needs.
- Fresh air return: Adds extra ventilation and can help the room feel less stuffy.
- Sleep mode: Supports quieter, more comfortable overnight operation.
- 12-hour timer: Makes it easier to schedule cooling or heating around daily routines.
- Indoor noise of 46 to 50 dBA: Keeps operating sound within a reasonable range for this style of air conditioner.
Q: What size room is a 3.9 kW cooling and 3.6 kW heating box air conditioner best suited to?
A: It is typically suited to a small to medium room, roughly around 15 to 25 square metres in average conditions. Hot western rooms, poor insulation or large windows can reduce effective coverage and may require a higher-capacity unit.
Q: How does this Westinghouse box air conditioner compare with a split system for noise and airflow?
A: A box air conditioner usually sounds louder indoors than a split system because the compressor and fan sit in the same unit. The trade-off is simpler replacement in an existing window or wall opening, without separate indoor and outdoor units.
Q: Can this reverse cycle box air conditioner heat a room in winter as well as cool it in summer?
A: Yes, the reverse cycle design provides both cooling and heating, with 3.9 kW cooling and 3.6 kW heating output. Heating performance is practical for everyday winter use, though reverse cycle units can feel less effective in very cold outdoor conditions.
Q: Does a box air conditioner like this need a suitable window or wall opening before buying?
A: Yes, box air conditioners are designed to fit a compatible window or wall sleeve opening, so physical fit matters before purchase. Measure the existing opening carefully and allow for support, drainage and clear external airflow, then discuss with your electrician.
Q: What does the LCD remote add compared with basic manual controls on a box air conditioner?
A: The LCD remote makes it easier to change temperature, mode and fan settings from across the room instead of using the unit controls. That is especially useful at night or when the air conditioner is mounted higher in a wall or window opening.