Promac inverter generators
Find the right generator.
Three quiet inverter generators: one for every trip, van and blackout. Compare them side by side, and see how Promac stacks up against the rest.
Quick pick
Which one fits how you use it?
Camping, 4WD & Back up
The 2000W
Light and quiet power for camp. Runs a portable fridge, lights and charging.
- 🏕️ 18.5 kg – our lightest
- 🔇 Our quietest, from 52 dB(A)
- 🔌 USB + 12V charging
Caravanning & Back up
The 3300W
The all-rounder for the van, and our most popular generator.
- ❄️ Runs caravan aircon
- 🔋 Push-button electric start
- 🚐 23 kg with a carry handle
Big vans, home & site
The 4500W
The most power in the range, for aircons and more, blackouts and job sites.
- ⚡ 4000W running power
- 🔌 2 AC outlets + USB & 12V
- 🛞 Wheel & handle kit
Promac vs open-frame generators
Promac inverter
Compared with a typical open-frame (conventional) generator. Features vary by brand and model.
Side by side
Compare the range
The Camping Companion
2000W Inverter Generator
$995.00
Best for lightweight, portable power
View the 2000WHeading off for a weekend? This light, easy-to-carry unit runs portable fridges, LED lights and device charging, with 1,800W running power at 18.5 kg.
- Most popular
The All-Rounder
3300W Inverter Generator
$1,395.00
Best for caravanning and everyday power
View the 3300WA great all-rounder for caravanning, home backup and light trade jobs. Easily powers caravan appliances and coffee machines, with 3,000W running power and convenient push-button start.
The Powerhouse
4500W Inverter Generator
$1,945.00
Best for bigger power demands
View the 4500WIdeal for caravanning, home backup, rural properties and demanding worksites. With 4,000W running power, a generous 12L fuel tank and included handle and wheels, it delivers serious power without the bulk. Electric Start!
Compare full specs
| Specification | 2000W | 3300WMost popular | 4500W |
|---|---|---|---|
| Running (rated) outputRun power | 1,800W | 3,000W | 4,000W |
| Starting outputStart power | 2,000W | 3,300W | 4,500W |
| WeightWeight | 18.5 kg | 23 kg | 40 kg |
| Size (L × W × H, mm)Size (mm) | 480 × 285 × 460 | 500 × 305 × 500 | 595 × 440 × 515 |
| Wheel & handle kitWheel kit | No | No | Yes |
| Noise at 7 mNoise | From 52 dB(A) | From 54 dB(A) | From 53 dB(A) |
| Fuel tankFuel tank | 4 L | 7 L | 12 L |
| Run timeRun time | 6 hrs at 50% load | From 6 hrs | From 10 hrs |
| Start systemStart type | Recoil | Electric + recoil | Electric & recoil |
| AC power outletsAC outlets | 1 | 1 | 2 |
| USB & 12V outletsUSB/12V | Dual USB + 12V | Dual USB + 12V | Dual USB + 12V |
| Digital displayDisplay | Yes | Yes | Yes |
| Macht engine warrantyWarranty | 3 years | 3 years | 3 years |
Promac vs cheap online generators
Promac
Compared with typical low-cost generators sold online. Warranty and support vary by brand.
Good to know
Questions people ask
Which Promac generator do I need?
It depends on what you want to power and how many appliances you'll run at once.
The 2000W is ideal for lightweight, portable power, including fridges, lights and charging devices. It can also run compatible caravan air conditioners, although you may need to switch off other appliances, like your coffee machine, while the aircon is running.
The 3300W is a great all-rounder for caravanning, everyday appliances, home backup and light trade jobs.
The 4500W is ideal for bigger power demands, running caravan air conditioners alongside other appliances, powering multiple household essentials during blackouts and demanding worksites.
What is the difference between running and starting power?
What is the difference between running and starting power?
Running (rated) power is the amount of power your generator can continuously supply, while starting (peak) power is the extra boost available for a short period when appliances like fridges, pumps and caravan air conditioners first start up.
For example, our 4500W generator delivers 4000W of continuous running power, with up to 4500W of starting power.
When choosing a generator, it's important to consider both the power your appliances need to run and any additional power they need at start up.
Why choose an inverter generator?
Inverter generators are generally quieter, lighter, more portable and more fuel-efficient than traditional open-frame generators. They produce clean, stable power, making them ideal for sensitive electronics like laptops, phones and TVs. Their engines can also adjust to lower power demands, helping reduce noise and fuel consumption.
Are they easy to start?
Absolutely! The 2000W features a simple recoil (pull) start, while the 3300W and 4500W feature convenient electric push-button starting.
Just add oil and fuel, connect the included battery on electric-start models and follow the easy steps in your Quickstart Guide. You're ready to go!
Which one is the quietest?
The 2000W, from 52 dB(A) at 7 m. The 4500W runs from 53 dB(A) and the 3300W from 54 dB(A).
Which one runs a caravan air conditioner?
All three Promac inverter generators can power caravan air conditioners, depending on the unit's power requirements. The main difference is what else you want to run at the same time.
If you're only running the aircon, the 2000W may be all you need. If you want to run other appliances alongside it, like your fridge, microwave or coffee machine, the 3300W or 4500W gives you more flexibility.
Can I power my home in a blackout?
Absolutely! All three generators are great for home backup, depending on how much you want to power.
The 2000W is ideal for keeping your fridge running, powering a few lights and charging devices.
The 3300W gives you more flexibility to run your fridge, freezer and a few additional appliances.
The 4500W offers the most flexibility, comfortably powering multiple household essentials during a blackout.
Use suitable heavy-duty extension leads and appropriately rated power boards without exceeding the generator's capacity. Always operate your generator outdoors, well away from doors, windows and vents. Never connect it directly to your home's wiring without an approved changeover switch installed by a licensed electrician.
Can I connect it to my home's power through a changeover switch?
Yes! With a professionally installed generator changeover switch, you can connect your generator to your home's electrical system using a suitable lead and dedicated inlet. This allows you to power selected household circuits through your existing power points and switches during a blackout, without running extension leads throughout the house.
A licensed electrician must install the system and confirm compatibility with your generator.
Located on the Sunshine Coast? We highly recommend Blackout Protection for home backup generator installations.
What warranty do I get?
The generator comes with a 3-year warranty on the Macht engine and a 12-month warranty on all other generator components, with warranty agents and spare parts available across Australia.
Promac is Australian-owned, family-run since 1981 and proudly based in Beerwah, Queensland.
Can I see one in a store?
Yes. Use the store locator to find a Promac stockist near you or give us a call anytime we can help guide you in the right direction! Phone: 1800 773 267 or email promac@promac.com.au
