RV A/C & Furnace Repair & Diagnostics
Professional mobile diagnosis and repair for RV air conditioners and furnaces. MilTech RV comes directly to your RV to test the system, identify the likely cause and explain repair options before additional work is performed.
When Your RV Won't Stay Comfortable, Start With Proper Testing
A no-cool A/C or no-heat furnace can have several possible causes. Thermostats, control circuits, power problems, capacitors, motors, airflow restrictions and other components can create similar symptoms. We diagnose the system before recommending parts whenever practical.
RV Air Conditioner Diagnostics & Repair
We troubleshoot rooftop RV air conditioners for cooling, starting, cycling, airflow and electrical problems.
- Unit will not start
- Starts and stops unexpectedly
- Fan runs but air is not cold
- Weak airflow
- Breaker trips
- Capacitor, motor and control issues
RV Furnace Diagnostics & Repair
We troubleshoot RV furnaces for ignition, airflow, electrical-control and heating problems.
- Furnace will not start
- Blower runs but burner will not ignite
- Starts and shuts down
- Insufficient heat or airflow
- Thermostat/control concerns
- 12-volt power problems
Problems We Can Help Diagnose
A/C Problems
Not cooling, compressor not starting, short cycling, unusual noises, weak airflow or electrical problems.
Furnace Problems
Blower without heat, failure to ignite, unexpected shutdown, poor airflow or inconsistent heating.
Control Problems
Thermostat issues, intermittent operation, breakers, fuses, 12-volt supply and related controls.
Diagnose. Explain. Repair. Educate.
Replacing an A/C or furnace component based only on a symptom can waste time and money. Our process starts by testing the system and gathering evidence.
Once we identify the likely cause, we explain what we found and discuss the appropriate next step before additional authorized repairs are completed.
Test power, controls, operation and accessible components.
Review findings and repair options in plain language.
Complete authorized repairs using appropriate parts and procedures.
Explain system operation, maintenance and what to watch for.
Common HVAC Problems We Diagnose
RV A/C Diagnostic Examples
- A/C fan runs but compressor does not start
- Breaker trips when the A/C starts
- Capacitor or fan-motor failure
- Weak airflow or icing
RV Furnace Diagnostic Examples
- Furnace blower runs but burner will not ignite
- Furnace starts and shuts down shortly afterward
- Thermostat or 12-volt control problems
- Intermittent heating or airflow concerns
RV A/C & Furnace Systems We Service
MilTech RV services common RV heating and cooling systems, including Coleman-Mach and Dometic rooftop RV air conditioners, common RV propane furnaces, thermostats and related electrical controls.
Rooftop RV Air Conditioners
Coleman-Mach, Dometic and other common rooftop RV A/C systems, including starting, cooling, airflow and electrical concerns.
RV Propane Furnaces
Common RV furnace systems with ignition, blower, airflow, thermostat and 12-volt control concerns.
HVAC Controls & Components
Thermostats, control boards, blower and fan motors, capacitors and related accessible electrical controls.
Help Your Heating & Cooling Systems Work Their Best
RV A/C Maintenance
Inspect accessible rooftop and interior components, filters, airflow, visible electrical connections and operating condition.
Furnace Maintenance
Inspect accessible furnace components, intake/exhaust areas, electrical connections and basic operation.
Seasonal System Check
Testing before peak summer or cold-weather use can uncover concerns before you depend on the system.
Mobile RV Diagnostic & Labor Pricing
Service Call
Standard mobile service-call fee.
First Diagnostic Hour
Initial diagnostic labor.
Additional Labor
Additional authorized repair labor.
Parts and materials are additional. Travel beyond the normal 30-mile service area is $2 per mile. Findings and additional repair work are discussed before authorization.
Serving RV Owners in Iowa & Arizona
Greater Des Moines, Iowa
Mobile RV service through October 14, 2026. Iowa service resumes April 14, 2027.
Des Moines Service AreaHaving Trouble With Your RV A/C or Furnace?
Tell us what the system is doing, your RV year/make/model and where it is located. Photos, model numbers and fault codes can also help us prepare.