Can I Run My AC Unit With A Generator During A Power Outage? Here’s The Truth
Power outages in Scottsdale can happen suddenly, especially during monsoon storms. When the lights go out and the heat starts rising fast, one question comes to mind. Can you run your AC using a generator?
The short answer is yes, but only if the generator is strong enough and the setup is done safely. Let’s break it down so you know exactly what works and what doesn’t.
Understanding Your AC’s Power Needs
Every air conditioner requires two kinds of power. Running watts and starting watts. Running watts are what your AC needs to stay on. Starting watts are the big surge of power needed when the compressor kicks on. This surge can be two to three times the running wattage.
That means a generator that seems powerful enough on paper might still fail the moment the AC tries to start. In Scottsdale homes with central AC systems, this becomes even more important since our units work harder in the extreme desert heat.
What Size Generator Do You Need?
Window AC units usually work with a generator in the 2,000 to 3,000-watt range. But central AC systems are a whole different story. Most require a generator rated at 5,000 to 8,000 watts or more. Some Scottsdale homeowners install whole-home standby generators because they can manage the high load of cooling during a summer outage.
If you prefer a portable option, look for an inverter generator. These produce cleaner, more stable power that modern AC electronics can handle without damage.
How To Know If Your Generator Is Enough
Start by checking your AC’s label or owner’s manual for wattage or amperage. Then add up the wattage of anything else you plan to run, like your fridge or lights. Finally, add around 20 per cent as a safety buffer.
If your generator barely meets the minimum, your AC may still struggle. That’s where a soft start kit helps. It reduces the startup surge, making it easier for a generator to handle the load.
Safety Matters More Than Anything
Never run a generator indoors or in a garage. Always place it outdoors at least twenty feet away from doors or windows. Always use a transfer switch installed by a licensed technician so your generator power never backfeeds into the utility grid.
Need Expert Guidance?
If you’re unsure about generator sizing or want to upgrade your AC with a soft start kit, Scottsdale Air Heating & Cooling is here to help.
Our local team understands the demands of Arizona heat and can make sure your home stays safe and cool during outages. Reach out today for expert help and reliable comfort.
