An inverter generator is a newer kind of portable generator with an upgrade in the electronics part. It can automatically adjust the speed of its engine to the present electrical demand. This is something different from generators that run at a constant speed irrespective of the load size. There is a considerable reduction in the noise level and battery consumption as well. As you wish to power your pressure cooker, air conditioner, and refrigerator using a portable inverter generator, you should know one thing. A standard inverter generator can only run small household appliances, outdoor equipment, and RVs. But you can increase the power output of this generator. Yes, you can operate this generator parallel to a duplicate generator. Together, they can meet your powering needs. Also, go for an inverter generator with a higher power capacity as you look to power high-end devices using it. Of course, with this generator, you can get other benefits like portability, easy maintenance, low level of noise, clean power, and fuel efficiency.