San Marcos, TX

Mobile RV A/C & Heating Repair in San Marcos, TX

Mobile diagnosis and repair for rooftop air conditioners, heat pumps, and RV furnaces. Local pros service capacitors, fan motors, control boards, and ignition systems on-site.

Call (830) 402-5300 Request Service

Mobile service, a local pro comes to your rig
Written quote before any work starts
Emergency service available
Serving campsites, storage lots, and driveways

Most RV air conditioning failures are electrical, not about refrigerant. Weak start and run capacitors, seized fan motors, bad control boards, and thermostat faults cause most no-cool calls. Each of those can be fixed at your site. A local pro starts at the thermostat and works through the 12-volt control side before anyone opens the rooftop unit. A wrong guess is how owners end up paying for a compressor they never needed.

Furnace work follows the ignition chain. A local pro tests the sail switch, limit switch, igniter board, and gas valve in order through the outside access panel. The common failure parts for popular rooftop and furnace models ride on the pros' trucks. So most climate calls get diagnosed and fixed in one visit.

RV A/C & Heating Repair in San Marcos specifically

River humidity makes the coils load up faster and the drain paths clog. Units that limp along in dry heat elsewhere trip on overflow and airflow problems here.

Local conditions behind this pattern: long triple-digit summers with high humidity near the river.; strong spring thunderstorms and hail along i-35..

A local pro fixes it right where you camp. No towing and no waiting in a shop.

Symptoms owners describe

A/C hums or clicks but the compressor never starts
The fan runs but the air is not cold
The unit trips the breaker or dims the lights at startup
The furnace cycles but never lights
Weak airflow or short cycling on hot afternoons

How the diagnosis works

Check the thermostat call for cool or heat and the 12V controls
Test capacitor microfarads against the rated values
Measure compressor and fan amp draw under load
Test the furnace ignition chain: sail switch, limit, igniter board
Measure the temperature split between supply and return air

How the repair typically goes

Replace failed start and run capacitors with the right rated parts
Replace seized or worn fan motors and set the blade clearance
Replace failed control boards and check the thermostat wiring
Clean coils, filters, and drain paths to restore airflow
Check final amp draw and temperature split before closing up

Repairable at your site

Capacitor, fan motor, control board, and thermostat replacement
Furnace ignition-chain repairs and burner cleaning
Restoring airflow: coils, filters, and ducting at the plenum

When a shop or dealer is required

Sealed-system refrigerant failures, where a new unit is usually cheaper
Full duct replacement inside the roof cavity
Structural repairs around a leaking rooftop-unit gasket with roof damage

Parts commonly involved

Start and run capacitors
Fan motors and fan blades
Control boards and thermostats
Furnace sail switches and limit switches
Igniter boards and electrodes

What affects the price

Every visit starts with diagnosis and a written quote before repair work begins. These factors move the number:

How hard the fault is to find (control side versus unit side)
Parts needed and the unit brand and model
Roof access and height
Whether a new unit and a crane or lift is needed

How much does mobile RV A/C & Heating Repair cost in San Marcos, TX?

Most mobile RV A/C & Heating Repair in San Marcos, TX runs $150 to $650 for common electrical repairs. On-site labor typically runs $120–$175 per hour, with a service call of $95–$150, credited toward the repair. Simple fixes cost the least. The final price depends on parts, roof or slide access, and your rig make and model. These are rough ranges, not a quote. Every visit starts with an on-site check and a written quote before any work.

Capacitor or thermostat replacement: $150–$350
Fan motor or control board replacement: $300–$650
Furnace ignition repair (sail switch, igniter board): $200–$500
Rooftop A/C unit replacement (parts + install): $1,000–$1,800+
On-site labor rate: $120–$175 per hour
Service call / diagnostic: $95–$150,credited toward the repair

Want a real number for your rig? Call (830) 402-5300 and tell us what it is doing. You get a written quote before any work begins.

Dispatch coverage in San Marcos

Mobile service dispatches to campsites, storage lots, and driveways within roughly 25 miles of San Marcos, including areas along I-35, TX-80, TX-21.

RV locations local pros commonly serve

Canyon Trail RV Park : Full-hookup RV resort at 6050 S I-35 frontage road with a fishing pond.
San Marcos Springs RV Park : Full-hookup pull-through RV park at 1334 N I-35 off the access road.
Schatziland RV Resort : Large RV resort at 3169 Florence Street just off I-35.
Pecan Park Riverside RV Park : Riverfront RV park and cabins at 50 Squirrel Run on the San Marcos River.
Blind Salamander RV Park : 40-space riverfront RV park at 2025 N Old Bastrop Highway on the San Marcos River.
Storage Sense San Marcos : Self-storage with RV, boat, and vehicle spaces at 1900 Old Ranch Road 12.
River Road Storage : Gated self-storage with RV and boat parking at 880 River Road.
TGI Storage San Marcos : Fenced, gated self-storage with RV and boat storage in San Marcos.

These are some of the RV spots local pros get called to most. They are not limited to them. A local pro also comes to any other campsite, storage lot, or driveway in the area.

Access notes

Riverside park lanes are tight in peak season. For some calls a local pro parks at the park office.
Storage-lot calls need a gate code or the owner there, set up ahead of time.

RV Electrical Repair in San Marcos
Careful 12V and 120V fault tracing, converter and inverter repair, battery system service, and shore-power troubleshooting at your site.
RV Roof Repair in San Marcos
On-site checks, leak tracing, patching, and full resealing for EPDM, TPO, and fiberglass RV roofs. Local pros work where the rig is parked.
RV Generator Repair in San Marcos
Mobile diagnostics for onboard RV generators. Local pros service no-start, surging, shutdown codes, fuel delivery, and output faults right where the rig sits.

Nearby service areas

Frequently asked questions

Why does my RV A/C run but not cool?

A few things commonly cause this. A weak run capacitor can stop the compressor from starting. Dirty coils and filters can block airflow. Low power at the campsite in summer can also be the cause. Losing refrigerant is less common than most owners think. A local pro tests the amp draw and temperature split at your site. That shows the real cause before any parts are suggested.

How is mobile RV repair priced?

You pay a service-call fee that covers travel and diagnosis. Then you pay for parts and labor on the repair you approve. A local pro gives you the diagnosis and a clear quote before any repair work starts. A pro never works on an open-ended okay. A few things change the price. Those are the part type, how hard the access is, and the size of the repair. Each service page explains this.

How quickly can a local pro get to me?

It depends on a few things. Your spot in the service area matters. So does how busy local pros are and whether your problem is an emergency. A local pro books scheduled visits for a time window and puts emergency calls first by safety. When you call, we take your request and share a real ETA from the pro instead of a blanket promise. We also follow up with you if the schedule changes.

Looking for the general service overview? See RV Air Conditioning & Heating Repair, or everything available in San Marcos.

Need rv a/c & heating repair in San Marcos?

Call for honest phone triage, or send a service request and dispatch will follow up with a realistic window.