Need inverter to run CPAP without shore power I’m told; will this work?

CandyG

Oinfront

For sensitive electronics like a CPAP it will be safer to go with a "Pure Sine Wave Inverter" The one you show here is a "Modified Sone Wave Inverter" 

1000 watts will be plenty for a CPAP machine though. 

https://www.renogy.com/blog/-benefits-of-pure-sine-wave-vs-modified-sine-wave-inverters/

Speaks of CPAPs directly

Hope that helps!

pthomas745

It would work...but it is waaaaay more than necessary.  A smaller inverter will be easier to deal with inside the trailer, and be more energy efficient for your battery.

Find out the "wattage" of your CPAP.  It will be listed in the manual or even on the device.  Then look for an inverter that is closer to the needs of your device.  If your CPAP is rated at 100 watts, say, a 150 watt or 200 watt inverter would be more appropriate.

There are also 12V power adapters for CPAP's.  That would eliminate the need for an inverter entirely.

Here are some threads on CPAP use and power needs, etc. Lots of owners use CPAPs.

https://www.google.com/search?q=cpap+site:tab-rv.vanillacommunity.com&client=firefox-b-1-d&sxsrf=AOaemvIZsOxcxhin3OzE-ek4NWhCEC6HqQ:1635272522512&ei=Skd4Ye3eHsHz-wTAwpOQCw&ved=0ahUKEwjtq8Lu2OjzAhXB-Z4KHUDhBLIQ4dUDCA0&uact=5&oq=cpap+site:tab-rv.vanillacommunity.com&gs_lcp=Cgdnd3Mtd2l6EAM6BwgAEEcQsANKBAhBGABQ7hFYySpgpjJoAXACeACAAVeIAakLkgECMjCYAQCgAQHIAQTAAQE&sclient=gws-wiz

manyman297

Are you in a 320 or 400? The 400 (at least the 2021) has a 1200 watt inverter built in (utilizes the 110v outlet in the bed cubby) which would power the CPAP and is a pure sine wave inverter.

JeffroNC

Boo on the inverter. (seasonal reference) Wasted energy. Spend the money on a 12 volt adapter. I've been using one for years with my Resmed. It convetrs from 12 to 20 volts.

rcuomo

Ditto what Jeff said. 200w inverter should be sufficient but a 12v adapter is more efficient. 

N7SHG_Ham

You don't say what camper you have and what battery set up you have. In addition Amos used by your device aren't stated both on DC and AC.

As mentioned if there is a 12v option for you device, that will use less AH from your battery than adding the inverter.

It is very possible on a single dealer installed battery in a 320 that you may be between 1/2 and full battery depletion if you run the device overnight. You really can't answer that without knowing your battery capacity and the current usage of the equipment. Bear in mind for long term battery life on any lead acid battery you should consider 50% of capacity. For example if you have 100ah battery, then you have 50ah usable. A device that takes 5a would completely discharge the battery in 10 hours.

If you do go with an inverter, pure sine wave and a higher end one will be best. A Samlex brand 150w PSW inverter is at least double the size of cheap 300w ones but is a much better piece of gear, so don't shop price and watts only when looking at inverters.

HTH