RV Air Conditioner Repair in Conroe, Texas

August in Montgomery County is exactly the conditions a rooftop AC was built for and exactly the conditions that break it. A unit that only pulls the air roughly 15 to 20 degrees below ambient is already at its design limit on a 95-plus-degree afternoon, and that is when the weak capacitor, the tired fan motor, or the coil nobody has cleaned in years gives out.

What we repair on site

• Not cooling or weak cooling: capacitor, fan motor, dirty or frozen coil, low refrigerant, failing compressor.
• Musty smell on startup: mold and mildew on the evaporator coil and in the duct run.
• Clicks or hums but will not start: almost always the start or run capacitor.
• Water dripping inside: clogged condensate drain overflowing the pan, not a roof leak.
• Full unit replacement: standard 13.5K to 15K BTU units installed and wired to the existing ceiling assembly, and heat pump models where the rig supports them.

The fifteen-minute check before you call

1. Does the fan run at all? No fan, no power to the unit: check the breaker and the thermostat setting before anything else.
2. Fan runs, compressor does not start (a hum, then nothing). Classic capacitor symptom.
3. Feel the vent air. Barely cooler than the room, with ice visible on the coil through the return grille: the coil is likely frozen from restricted airflow, usually a dirty filter or a dirty coil.
4. A musty smell on first start that fades after a few minutes. Mold on the coil, not a mechanical failure. Still worth a cleaning, since it restricts airflow over time.
5. Water dripping from the ceiling assembly indoors on a humid day with no rain. Condensate drain, not the roof.

What things cost

Same figures as the pricing page. We test before quoting a unit, because the number of “dead” air conditioners that turn out to be a capacitor or a dirty coil is high enough that doing otherwise would be dishonest.

Why this fails the way it does in Montgomery County

Heat shortens capacitor life. Electrolytic capacitors are temperature-dependent, and a roof running in full Texas summer sun with the unit cycling most of the day ages them faster than a mild climate would. This is the single most common rooftop AC repair we do.

Humidity grows mold on the coil. The muggy season here runs from roughly mid-April into late October. A coil that is wet every hour the unit runs sits in high-dew-point air between cycles and grows mildew on itself. That restricts airflow, which makes the coil freeze, which makes the fan motor and compressor work harder than they should for years.

Storm surges take out boards. Montgomery County sits in the path of Gulf hurricanes, and a nearby power event, like the outages that followed Hurricane Beryl in July 2024, can put a surge through the converter and into a digital AC control board. If your AC died the same week as a grid event nearby, the board, not the compressor, is the first thing we check.

Pedestal voltage sags on a hot afternoon. When every rig on a storage row or lake dock loop is running AC at 4 p.m. in August, pedestal voltage can drop. A compressor starting on low voltage draws more current for longer, which cooks capacitors. A soft-start device or a surge-protecting EMS helps on both counts.

The maintenance that actually matters

Clean the evaporator, pan, and drain every spring, before the mugginess sets in for the season. Clean the condenser coil once a year. Check filters monthly in season. Check the AC gasket every few years, since a compressed gasket leaks water into the ceiling assembly and gets mistaken for a roof leak. Put surge protection at the pedestal wherever the rig plugs in.

The AC not cooling page walks through the check above in more detail, and the AC repair cost calculator prices your specific symptom before anyone drives out. We work on site across Conroe, Montgomery, Willis, The Woodlands, Magnolia, New Caney, and Huntsville.