Can Power Joe be used to power HVAC systems of central air conditioning / central heating? No, Power Joe cannot be hooked up to power your home’s HVAC system. However, you can use Power Joe to power small portable AC units, fans, or portable space heaters. Please check the wattage rating of your appliance to ensure that it is compatible with Power Joe’s 4100 Starting Watts/3300 Running Watts. Related articles How do I use Power Joe to power multiple appliances inside my home? What devices can I power with Power Joe? What is the amperage rating on the outlets? Does the Power Joe have any built-in safety features? How do I assemble my TJ603E?