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You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Introducing the UNIMAC ACM-500s Quiet Air series double-twin cylinder Air Compressor! This is a trade quality 4-Cylinder unit ideal for anyone looking for the performance and reliability that only an oilless electric air compressor can provide.
DUAL MOTOR
The ACM-500s has 2 twin-cylinder motors. With UNIMAC Electronic APC, the motors; output is equalised. That means the motors run at maximum efficiency for fast air tank filling.
ULTRA-QUIET
This Unimac Quiet Air Series is engineered to be just that. Whisper Vortex cooling fans, Hush Baffle air intakes, and vulcanised rubber motor mounts and rubber tyres combine to give this an Lpa of only 64 dBa thats nearly library quiet!
CLASS-LEADING POWER
This ACM-500s Oil-Free Air Compressor is powered by 2 twin-cylinder 1.1kw motors which is equivalent to a total output of 3.0HP up to 40% more than other models on the market!
BIG 50L TANK
With its 50L tank it is capable of delivering a continuous 200 litres per minute air supply for a huge variety of applications.
SERVICE-FREE DESIGN
Unlike petrol and other belt-driven models on the market, with this oil-free electric model you dont have to worry about engine maintenance or replacing belts or pulleys.
TWO NITTO OUTLETS
The two quick-connect outlets let you use a wide array of tools including grinders, impact wrenches, welders, nail guns, grease guns, chisels and more. It also has automatic on-off pressure control.
EASY TO USE
The precise easy-to-read tank pressure and line pressure gauges take the guesswork out of filling and using your air compressor.
PORTABLE DESIGN
The UNIMAC has 2 large easy-roll wheels with rugged airless vulcanised tyres for shop use and rubber anti-skid feet. Its extended handle makes it a breeze to move. It also has a grab handle for ease of manoeuvring in tighter spaces.
It's safe to say, the UNIMAC ACM-500s silent air compressor blows the competition away!
SKU: TOLACMUM5C0FA

We accept Change of Mind returns for 14 days after you have received the item in cases where you have changed your mind or made an incorrect purchase and wish to return the product. This also applies to orders canceled when the item has already been dispatched from our warehouse. The item must be in a re-saleable condition to qualify for a change of mind refund. Deductions may apply including Initial and Return Shipping, as well as restocking fee of 10% of the product price
At Yarra Supply, we stand behind our products. Most products come with a 12-month warranty unless otherwise stated on the product listing. Some products may be eligible for an extended warranty, so please check the specific product details to confirm.
Please note: Our warranty covers manufacturer defects and does not cover damage caused by user misuse or issues during delivery.
How to initiate a warranty claim
If you experience an issue with your product, please follow the steps below to submit a warranty claim:
Contact Customer Service and provide the following details.
· Order ID
· Description of the issue
· Images/Videos: Show any visible defects or faults. Please use the recommended file size and format for best visibility.
Our team will evaluate your claim and respond promptly. If you have any questions, please contact Yarra Supply Customer Service and provide your order ID for reference.
At Yarra Supply, we aim to make your shopping experience easy and hassle-free.
We offer free shipping on most products to most areas across Australia. While some items may incur additional delivery fees due to carrier limitations or delivery distance.
Any applicable shipping fee will be clearly displayed at checkout before you confirm your order.
We currently ship across Australia, and selected products are also available for delivery to New Zealand.
If you are shopping from New Zealand, please switch to the New Zealand site via the region selector on our homepage to view local availability and pricing.
Orders are typically processed within 1–2 business days.
Standard delivery time is 3–10 business days within Australia, and 7–15 business days for New Zealand orders (depending on your location and courier service).
Tracking information will be provided once your order has been dispatched.
Once your order has been shipped, you’ll receive an email with your tracking number and a link to track your parcel’s progress.
If your order hasn’t arrived within the expected time frame, please contact our customer service team at contact.yarrasupply@gmail.com with your order number, and we’ll assist you promptly.
If you need to cancel a purchase after the product has been dispatched, please note that the postage fee may not be refundable.
Additional postage fees may apply for re-delivery or re-direction requests.
If you are not satisfied with the product or have mistakenly placed the wrong order, please note that we are not responsible for any return shipping costs after the item has been shipped.
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