How to Keep Your RV A/C Unit Running Strong All Season Long
How to Keep Your RV A/C Unit Running Strong All Season Long
Posted on September 1, 2025
When the summer sun starts to beat down and you're parked at your favourite campground, your RV's air conditioner quickly becomes the hero of the day. But just like anything else in your motorhome, your A/C unit needs a little attention to keep working its best. The good news? Most RV air conditioning maintenance tasks are easy to do and can make a big difference in how well your system runs. Let’s take a look at some simple, practical ways to keep your RV cool and comfortable, without breaking a sweat.
Start With the Rooftop
Whether your RV has one A/C unit or multiple, checking the roof should become part of your routine, especially before hitting the road. Rooftop units are exposed to the elements, and things like fallen leaves, twigs, and other debris can collect around the housing or even get inside. It’s a good idea to visually inspect the unit every time you pack up or change campsites, if it’s safe and you’re able to climb up.
A soft broom or even your hands can be used to gently clear away debris. While you're up there, take a look at the plastic A/C cover. If it looks cracked, brittle, or loose, it might be time for a replacement. Damage here could allow water inside or impact the performance of the unit.
Clean Vents and Filters Regularly
Inside your RV, the air conditioning vents and filters deserve just as much attention. Dust, pet hair, and other particles collect quickly and can clog things up. Removing the vent covers and giving them a rinse or pressure wash outside is an easy fix. Just make sure they’re completely dry before reattaching them.
As for the filters, cleaning or replacing them every 90 days of continuous use is a solid rule of thumb. If you travel often, you might want to do it even more frequently. Some filters can be gently vacuumed or washed, but eventually, they’ll break down and need to be replaced. Keeping your filters clean improves airflow and helps prevent the system from working too hard.
How to Tell If It’s Running Right
Want to do a quick A/C health check? Start by listening. When you turn the unit on, the fan should kick in smoothly and without odd noises. After a few minutes, place your hand near the vent to feel for cool air. The A/C should stay on until the room reaches your set temperature, then cycle off normally.
Also keep an eye out for water leaks or moisture around the unit, those could signal issues with drainage or seals. And if your A/C won’t start or seems underpowered, your first check should be your electrical connection. Make sure you're plugged into a proper power source and confirm that your RV's internal breaker hasn't tripped.
Keep It Moving, Even Off-Season
Just because your RV is parked for a while doesn’t mean you should forget about the air conditioner. During long breaks, like over the winter or between big trips, it's wise to turn the unit on every month or two. This helps keep the internal components in good shape and gives you time to notice any issues before your next adventure.
You can also combine this with other seasonal RV tasks like checking the seals, inspecting your batteries, or airing out the interior. Setting reminders on your phone or using an RV maintenance app can help you stay on top of everything without having to think too hard about it.
Periodic Deep Cleaning Is Worth It
Aside from the basic upkeep, a deeper clean every year or two can go a long way in extending your A/C’s life. This includes washing the condenser coils, evaporator coils, and making sure the drain lines are clear. You can also inspect the rubber gaskets and reseal the unit if necessary.
If that kind of work feels overwhelming, or you simply prefer peace of mind, consider having your unit serviced by a professional. RV technicians can spot hidden issues before they become expensive problems and help ensure everything’s sealed and running efficiently.
Don’t Overthink It
RV air conditioner maintenance might sound complicated at first, but it’s really no different than caring for your home appliances. Take a few minutes here and there to inspect, clean, and listen to your system, and it will keep working when you need it most.
At The Hitch House in Oro-Medonte, ON, we know how important a cool, comfortable RV is for your travels. If you ever have questions, need replacement parts, or want your A/C professionally serviced, our team is here to help. Stay cool, and happy camping!