Inverter Generators NZ

Inverter generators produce clean, pure sine wave electricity - the same quality as the grid - making them the safe choice for laptops, phones, CPAP machines, TVs and any appliance with a microprocessor. They also adjust engine speed to match the load, so they're quieter and 20-40% more fuel-efficient than conventional models. Generator Shop stocks 40+ inverter generators from Honda, GT Power, Powertec, Powermax and Yamaha, spanning compact 2 kVA camping units to 11.25 kVA home-backup systems. 

What inverter generators are used for 

Inverter generators suit anyone powering sensitive gear. Campers, caravanners and boaties value the light weight and low noise of a unit like the 21 kg Honda EU22i. Homeowners use larger silenced models such as the GT Power GT9000ESi for storm and outage backup without disturbing the neighbours. Tradies run laptops, chargers and measuring tools cleanly on site. And off-grid and solar households rely on 2-wire auto-start inverter models to top up battery banks automatically when the sun doesn't show. 

How to choose an inverter generator 

Three factors matter most. Power output - match running watts to your load: 2,000-2,500 W covers camping and light backup, while 4,000-9,000 W runs a whole house. Portability vs output - small suitcase units are carry-friendly; higher-output models trade weight for capability. Start type and integration - recoil for simple portable use, electric start for convenience, or 2-wire auto-start if you're pairing with an automatic transfer switch or solar setup. If you'll parallel two smaller units for more power, check they're parallel-capable. Our Generator Size Calculator will confirm the wattage you need before you buy. 

Frequently asked questions 

Are inverter generators safe for laptops and phones? 

Yes - that's their main advantage. Inverter generators output pure sine wave power with very low harmonic distortion, so they won't damage laptops, phones, CPAP machines or appliances with sensitive electronics the way an unstable conventional generator can.

How long will an inverter generator run on a tank? 

It depends on the model and load. Because inverter generators throttle down under light loads, a mid-size unit will typically run 6-12 hours at quarter to half load on a single tank. Running fewer appliances extends the runtime significantly.

Can I run my whole house on an inverter generator? 

For essential circuits, yes. A 6,000-9,000 W model like the GT Power GT9000ESi can cover a fridge, freezer, lighting, Wi-Fi and a heat pump. Whole-home coverage including an electric jug and oven at once needs careful sizing - use the calculator or call our team.

Are inverter generators quieter than conventional ones? 

Yes. Because they run only as fast as the load requires and are often housed in a silenced casing, inverter generators are noticeably quieter - well suited to campgrounds, residential streets and noise-sensitive worksites.

What's the difference between this range and your Silent or Open Frame Inverter pages? 

All models on this page are inverter generators. Choose Silent Generators if a fully enclosed, sound-dampened casing matters most; choose Open Frame Inverter Generators for lighter weight and higher output at a lower price. Not sure? Our team can match a model to your use case.