Results for "air conditioner"

Ac Refrigeration Easy 30 minutes 131 👍 0

RV AC Freezing Up? Fix Ice on Coils in 5 Steps

Turned on my RV's AC as a total newbie and watched it run perfectly for an hour before becoming a frozen disaster that won't cool. I can literally see ice building up on the coils, and then it's game over until everything thaws out.

This has happened a few times now and I'm getting tired of sitting in a hot RV waiting for the thing to defrost. What actually causes AC units to freeze up like this? And more importantly, how do I stop it from happening again? I'm guessing it's something simple I'm missing, but I'd rather fix it right than keep dealing with this cycle. …more

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Ac Refrigeration Medium 2-3 hours 128 👍 0

Dometic RV AC Not Cooling? 5 Common Fixes for Air Conditioner Troubleshooting Guide

Walked out to my RV this morning trying to decide between calling a repair tech or troubleshooting my Dometic Brisk Air rooftop AC myself since it's showing weird operational issues. The compressor engages and fan motor operates normally, but the unit fails to produce cold air output. Temperature differential across the evaporator coil is minimal.

Unit functioned properly through previous cooling season with no apparent issues. Current symptoms include normal airflow volume but inadequate cooling capacity. What systematic diagnostic procedure should I follow to identify the root cause? Looking for a methodical troubleshooting sequence that addresses the most probable failure points in order of likelihood. …more

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Slideouts Medium 2-3 hours 108 👍 0

RV Slide Out Water Leak Repair: Complete Guide to Finding & Fixing Leaks in Your RV

Replaced my slide out seals last month but water still keeps pouring in every time it rains — am I missing something obvious here?

I've heard it could be the weatherstripping or seals, but I'm not sure how to inspect them properly or what other things might cause leaks. Could someone walk me through a systematic approach to find and fix slide out water leaks? I'd really appreciate guidance on what to check first and how to go about diagnosing the problem.

While the seals look okay visually, something clearly isn't sealing right when it rains. …more

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Product Ranking 8 compared

Best RV Air Conditioners

4.4 (8,100 reviews)

Ac Refrigeration Medium 45 minutes 107 👍 0

RV AC Making Loud Humming Noise? Fix Compressor Not Starting

Somewhere above my head, there's this loud, relentless humming grinding through the RV whenever I flip on the rooftop AC — compressor won't start but the fan spins fine.

I've been dealing with this for days now and it's driving me crazy - especially with the heat we've been having! The humming is so loud that I'm worried something might be seriously damaged. I really hope this is something I can fix myself rather than having to call out a repair tech. What could be causing a compressor to hum loudly but not start up? …more

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Exterior Medium 2-3 hours 106 👍 0

RV Roof Leak Around Air Conditioner: Complete Repair Guide

Around noon Saturday I'm planning to tackle this stubborn RV roof leak by my air conditioner — what tools should I gather beforehand? My rooftop air conditioner is letting water in every time it rains, and when I climbed up there (probably looking like a graceful gazelle), I can see the sealant around the AC unit is definitely cracked and peeling.

I'm standing in the RV section of the hardware store looking at about 47 different tubes of sealant, and I have no idea which one won't turn into another cracked mess in six months. What's the best product to properly reseal around an RV air conditioner? I'd rather not repeat this whole 'indoor rain shower' experience again! …more

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Exterior Medium 2-4 hours 105 👍 0

How to Fix Cracked Dometic RV AC Covers & Roof Vents: Complete Repair

Already tried following a YouTube tutorial to fix the cracked Dometic air conditioner cover on my 2022 East to West 1900MMK travel trailer but somehow made the crack even worse. What are my repair options - can I fix the crack or should I replace the whole cover?

Also dealing with a broken cap on the roof tank vent. I'm curious about material choices - I've noticed galvanized steel can rust, while PVC seems to degrade in sunlight. What are the pros and cons of different vent cap materials? What's a reasonable price range for replacement?

Looking for practical solutions for both issues. …more

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Solar Batteries Medium 45 minutes 98 👍 0

RV Solar Panels Not Charging Battery: Low Amp Troubleshooting Guide

Installed 400 watts of solar panels on the roof last month but my battery monitor barely shows 2 amps coming in even at peak sun. Wiring looks solid, connections are tight, and the panels tested fine individually. Something between the panels and the battery bank is killing my charge rate. …more

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Engine Medium 2-3 hours 97 👍 0

Onan 5500 Generator Shuts Down Under Load: Troubleshooting Guide

Onan 5500 runs perfectly at idle but kills itself within 30 seconds of turning on the AC. Been fine for years and suddenly can't handle any real load. Fuel filter is new, oil is fresh, and it starts right up every time — just dies the moment I ask it to actually work. …more

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Engine Easy Informational 84 👍 0

AGS Starting RV Generator with AC Load: Modern Systems vs Old Rules

I noticed I'm getting wildly different advice about whether my AGS should start the generator when AC kicks on—some say it'll fry contacts, others say it's fine?

I'm wondering if modern AGS systems have addressed these older concerns about generator startup under load. Is starting the generator directly through AGS when the AC demands cooling safe for the system? Would it be better to manually start the generator before leaving to allow a warm-up period, or is the current automatic load engagement fine with contemporary RV generator technology? …more

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Ac Refrigeration Medium 1-2 hours 84 👍 0

Coleman Mach AC Leaking Water Inside RV: Complete Troubleshooting Guide to Stop Drips

I'm planning my weekend getaway when I spotted water dripping from my Coleman Mach air conditioner model 49003A879 that definitely wasn't there yesterday. I'm in Myrtle Beach, with super humid conditions (90s with crazy humidity) and getting pea-sized water drops falling from the ceiling vents at maybe 2 drops per minute, which doesn't sound like much but it's making puddles on my floor.

I've been keeping the main ceiling vents mostly closed to push more air to the back of the coach. Climbed up on the roof expecting to find some fancy drain pump or tubing system, but honestly don't see much of anything obvious.

Is this just how these Coleman units work, or am I missing something? Really hoping this isn't a 'deal with it' situation, but wondering if my closed vents are screwing up the airflow or if there's actually a drainage problem I need to fix. …more

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Ac Refrigeration Medium 2-4 hours 82 👍 0

Advent RV Air Conditioner Not Cooling? Complete KoolRV Adapter Fix Guide

Around 6 AM I walked out to my fifth wheel and spotted my Advent air conditioner running but barely pushing any cool air through the vents. I replaced my old Coleman AC with an Advent, mainly due to price, but I'm not getting good cooling during the heat of the day. I've found that opening the slide vents on the ceiling cover helps a bit.

I'm considering using a KoolRV adapter like I had with my previous Coleman, but no adapter currently exists for the Advent. I've noticed the cold air discharge opening is located in the corner instead of the center, which I think is causing air turbulence and restricting duct airflow.

My main concern is whether restricting the airflow too much could cause problems like freezing up or other damage to the AC system. I've also seen that installing these adapters involves removing some kind of dividing wall inside the unit, but I don't understand why that's necessary.

Could someone explain if there are risks to restricting airflow and why that dividing wall needs to be removed? I want to make sure I understand what I'm getting into before I try any modifications. Right now, it's starting to cool down here in the Everglades, but I still want to improve my cooling performance. Thanks for any guidance! …more

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Best RV Sewer Hoses & Kits

4.6 (31,500 reviews)

Engine Easy 2-4 hours 80 👍 0

Ford E-450 Class C RV Chassis Service in South Florida - Complete Dealer Guide

Need chassis service on my Ford E-450 Class C in South Florida and the regular Ford dealers keep turning me away because of the RV body. Called four dealerships and none of them want to touch it. Looking for a shop that actually works on RV chassis down here. …more

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Propane Medium 45 minutes 80 👍 0

Coleman 9420-381 RV Thermostat Voltage Drop: Complete Repair Guide & Solutions

Pulled the same wire swap trick that fixed my old analog RV thermostat's voltage drop, but this new Coleman 9420-381 digital replacement is behaving completely different. Everything worked great all summer with the AC, but now that heating season is here, I'm having major problems.

The furnace keeps short-cycling terribly - the burner fires for maybe 3-20 seconds, shuts off, then the whole cycle repeats. I've already ruled out the furnace itself (replaced the board, checked sail switch and limit switch). Through testing, I discovered the furnace is steady at 13.4V, but when the thermostat calls for heat, the voltage it sends back slowly drops from 13V down to around 10V, then the burner shuts down.

If I short the two furnace wires directly, the furnace runs perfectly. I suspect the thermostat's solid state components are failing. I'm wondering:
1 Has anyone else seen this issue?
2 Are others using this 9420-381 thermostat without problems?

I really like the digital features, but need a reliable solution. …more

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Ac Refrigeration Medium 2-3 hours 79 👍 0

RV AC Humming But No Air Flow? Fix It Yourself (2024 Guide)

I tried everything I could think of, but probably a dumb question—why would my 2006 Sightseer 30B's AC hum after storage but blow zero air? big mistake lol. The thing is humming like crazy but zero air coming out of any vents. It's loud enough to wake the neighbors but doing absolutely nothing.

I'm guessing something got stuck or seized up while it was sitting? Anyone know what typically causes this after long storage periods? Really hoping it's something I can fix myself before calling a repair guy. …more

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Electrical Medium 2-3 hours 78 👍 0

Winnebago EKKO Shore Power & Water Leak Fix - Expert Guide

After discovering shore power and water leak issues in my brand new 2025 Winnebago EKKO, I'm trying to decide between returning it or tackling the repairs myself. First, when I connect to shore power, the batteries aren't charging at all and there's an 'OPEN GRD' warning on the transfer switch. The shore power connection shows a red G light with green L and N lights. Second, there's water dripping right above the driver's seat coming from somewhere in the plastic overhead area between the left storage compartment and the TV mount. We have a cross-country family trip planned next month and I need to know if it's safe to travel with these problems. The battery issue is preventing me from running the generator when the coach battery gets too low. Is this something I can fix myself or do I need to head straight back to the dealer? …more

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