Rooftop AC: Penguin & Brisk II Not Cooling
RUNNING BUT NOT BLOWING COLD? START HERE
Owner guide
Dometic AC, Fridge & Awning Troubleshooting Guide
Dometic runs more RV rooftop AC units, fridges, and awnings on the road than any other brand. Here’s the real fault reference for the three systems that generate the most service calls. Rooftop AC (Penguin/Brisk II) AC P...
Active corridor: Montana · Wyoming · Idaho · Washington — case-by-case beyond.
Field notes
Dometic runs more RV rooftop AC units, fridges, and awnings on the road than any other brand. Here’s the real fault reference for the three systems that generate the most service calls. Rooftop AC (Penguin/Brisk II) AC Performance Test Refrigerator & Error Codes Power Awning
AC Performance Test: Is It Actually Weak?
“It doesn’t feel as cold as it used to” is subjective. This test gives you an actual number to work from.
Refrigerator: Not Cooling & Error Codes
ABSORPTION VS. COMPRESSOR — DIFFERENT SYSTEMS, DIFFERENT FAILURES
Power Awning: Motor & Wind Sensor Issues
ERRATIC BEHAVIOR IS ALMOST ALWAYS THE WIND SENSOR OR THE CONTROL BOX
Not Sure Which Part Is Actually Bad?
A remote consult can save you from replacing the wrong part. Or skip the guesswork entirely and have us come diagnose and fix it on-site.
Owner checklist
- Close doors and windows, run the AC for 15 minutes to let it stabilize before testing
- Hold a thermometer at the return air grille (where air is pulled in) and record the temperature
- Hold the same thermometer directly at a supply vent (where cooled air comes out) and record that temperature
- Subtract the two — a healthy rooftop AC should show an 18–20°F difference between return and supply
- If the gap is noticeably smaller, check the air filter and rooftop condenser coils first — both are DIY-cleanable and account for most weak-cooling complaints
Related: All guides · Book a Service · Pricing
Pricing teaser
Trip fee $75 within 30 miles, then $1.50/mi. Labor ~$150/hr (1-hour minimum, billed in 30-minute increments). Diagnostic $150 applied toward repair if you proceed.
Active corridor: Montana · Wyoming · Idaho · Washington — case-by-case beyond. Credentials (text): Victron Professional Certified Installer · weBoost Authorized Installer · Peplink Certified Associate · Dometic Professional Certified.