RV Refrigerator & Cooling Unit Repair in Tucson, AZ
Tucson summers push absorption refrigerators harder than almost anywhere else in the country — ambient heat alone can stop a marginal cooling unit from keeping food cold. Shawn diagnoses and repairs Dometic and Norcold refrigerators on-site, including full cooling-unit replacement when the boiler tube has failed.
An RV refrigerator runs on the absorption-cooling principle — no compressor, just a sealed boiler tube, ammonia, and heat. That makes it reliable for decades, but it also means the two most common failures (a yellow ammonia-crystal stain on the back fins, or simply no cooling at all after a bumpy Tucson-area road trip) both point to the same part: the cooling unit itself, not the thermostat or the fan.
Shawn is factory-trained and vendor-certified on both Dometic and Norcold refrigerator platforms, including the recall history on older Dometic units. Before recommending a full cooling-unit swap, he checks the simpler, cheaper causes first — a blocked roof vent, a failed cooling fan, a bad thermistor, or a unit that's simply not level (absorption fridges need to sit close to level to circulate properly).
Installing a refrigerator cooling unit inside an RV
Refrigerator cooling unit replacement jobIs this what's happening to your RV?
Yellow stain on the back fins
A yellowish crystal deposit on the rear cooling fins means ammonia has escaped the sealed system — the cooling unit needs replacement, not a recharge.
Cools fine parked, warms up driving
If it holds temperature while parked but drifts warm on the road, check level and airflow behind the fridge before assuming the cooling unit is bad.
Ammonia smell inside or outside the RV
A sharp, rotten-egg-like odor near the fridge vents is a sign the boiler tube has ruptured — turn the fridge off and call for service.
Get a rough idea before you call
These are general mobile-repair ranges, not a final quote — every unit and part is different. Shawn confirms exact pricing after a quick phone diagnosis or on-site look.
Frequently asked questions
Once the sealed boiler tube leaks or shows the yellow ammonia stain, the cooling unit itself has to be replaced — it can't be recharged like a home A/C system. If the issue is the thermistor, fan, heating element, or gas valve instead, that's a straightforward repair without replacing the whole unit.
Yes — Dometic and Norcold 2-way and 3-way absorption refrigerators, on propane or 120V shore power, are both covered on-site.
A straightforward swap is usually a same-day, on-site job once the correct replacement unit is on hand — Shawn confirms the exact model and lead time during the phone diagnosis.
Dometic has issued recalls on certain older refrigerator models tied to cooling-unit fire risk. Shawn checks your model and serial number against the recall list as part of the diagnosis.
Tell us what's going on
Call or Text
(520) 818-2310Based In
2749 N Orchard Ave, Suite A
Tucson, AZ 85712
Hours
Mon–Fri, 8:30 AM – 6:00 PM
By appointment — call to check availability