Coming soon
Coming soon: Madison Automotive is becoming Master AutoTech Rexburg. Until the change, the shop is open as Madison Automotive. Call 208-228-5635 or visit 1334 N Yellowstone Hwy, Rexburg.
Car AC Repair in Rexburg, ID
Warm air or weak airflow? We diagnose, recharge and repair car AC systems for Rexburg drivers, backed by a 24-month / 24,000-mile warranty*.
1334 N Yellowstone Hwy, Rexburg, ID 83440 · Get Directions
Mon-Fri 8:00am-5:00pm | Sat Closed | Sun Closed ·
- Waiting room
- Free Wi-Fi
- Walk-ins welcome
24-month / 24,000-mile warranty* on parts & labor
Madison Automotive · becoming Master AutoTech Rexburg
*Exclusions apply. Ask your service advisor for full warranty terms.

- ASE Certified Technicians
- Best of State Utah
- Top Workplaces
- Locally Owned in Rexburg
Master AutoTech Rexburg diagnoses and repairs car air conditioning for drivers across Rexburg, Sugar City and the Upper Valley, from a simple recharge to a new compressor. We find the actual cause before we add refrigerant, and AC repairs are backed by our 24-month / 24,000-mile warranty*.
Rexburg summer afternoons often reach the mid-80s to 90s, and a long drive to Island Park, Yellowstone or the St. Anthony Sand Dunes with the AC blowing warm is miserable. Our shop is on North Yellowstone Highway just south of East Moody Road, with a waiting room to cool off while we work.
Signs You Need AC Repair
An Idaho summer is no time to find out your AC is failing. Bring your car in if you notice:
- Air blowing warm or only slightly cool
- Weak airflow from the vents, even on high
- A musty or sour smell when the AC runs
- Clicking, rattling or squealing when the AC turns on
- Water pooling on the passenger floor
- The AC works on the highway but not at idle
- Cooling that fades after a few minutes
AC Repair Services We Offer
AC diagnosis
Pressure and leak testing to pinpoint why the system isn’t cooling, explained before any repair.
Recharge & refrigerant service
Evacuate, vacuum test and recharge with the correct refrigerant and oil for your vehicle.
Leak repair
Hoses, seals, O-rings and fittings replaced so the recharge actually lasts.
Compressor & clutch
Failed compressors and clutches repaired or replaced with quality parts.
Condenser & evaporator
Damaged or clogged heat exchangers replaced to restore cold air.
Electrical & controls
Switches, relays, pressure sensors, blend doors and blower motors diagnosed and fixed.
How Much Does AC Repair Cost in Rexburg?
Car AC repair cost depends on what failed. A system that’s simply low on refrigerant costs far less than one with a leaking evaporator or seized compressor. The main factors are the refrigerant your car uses (newer R-1234yf systems cost more to service than older R-134a systems), how hard the leak is to reach, and whether parts like the compressor, condenser or drier need replacing. We test the system first and give you an estimate before any work starts.
We keep our prices competitive and upfront: you get an estimate and approve it before any work starts.
Need to spread out the cost? Master AutoTech offers several financing options, including the Goodyear Credit Card (6-month special financing on purchases of $250 or more), the Synchrony Car Care credit card, the 1stMILE Mastercard, Snap Finance, Acima and Surepay.
Why Choose Master AutoTech Rexburg for AC Repair
ASE-certified technicians
Rexburg techs are required to earn ASE certification within 90 days of joining.
We fix the leak, not just the symptom
We find where refrigerant is escaping instead of topping it off and sending you home.
Warranty on parts and labor
AC repairs are covered for 24 months or 24,000 miles.
Comfortable wait
Relax in our waiting room with free Wi-Fi.
What Rexburg Drivers Say
“I’ve had them work on both of my vehicles and they’ve been great. They fixed what was needing fixed and didn’t try to sell me on a bunch of other things.”
Morgan Ricks
“We had a great experience. We felt like we were treated well and not trying to be oversold on anything. Normally we have an overwhelming experience with mechanics, but we didn’t here. Very professional and not an expensive job like we were anticipating.”
Danielle Thompson
“Madison Automotive is amazing to work with! They always listen to my concerns and make sure I understand everything when explaining things to me. Definitely recommend this amazing team!”
Annika Smith
Time to cool down
Don’t sit through another hot drive. Call 208-228-5635 to book an AC check.
Components of Your Car’s AC System
Knowing the parts makes your estimate easier to understand. A problem with any one of them, or with the switches, relays and wiring that control them, can stop the AC from cooling, which is why we test the whole system first.
- CompressorThe powerhouse. Driven by the serpentine belt, it pressurizes refrigerant and pumps it through the system.
- CondenserA radiator for the refrigerant, in front of the engine radiator. It sheds heat so the gas turns back into liquid, which is why your radiator fan runs with the AC on.
- Receiver-drier or accumulatorFilters debris and moisture out of the refrigerant before they can damage the system.
- Expansion valve or orifice tubeMost cars use one or the other. Both meter refrigerant and drop its pressure so it can expand.
- EvaporatorBehind the dash. Expanding refrigerant absorbs heat from the cabin air, and the blower pushes the cooled air out your vents.
How Often Should You Service Your Car’s AC?
Have the AC checked every one to two years, ideally in spring before the heat arrives. A car AC loses a small amount of refrigerant each year, and dry Idaho air, road dust and winter road grime are hard on condensers and seals. Run the AC for a few minutes every week, even in winter, to keep seals lubricated.
| Item | Recommended interval |
|---|---|
| AC performance check | Every 1–2 years, before summer |
| Cabin air filter | Every 12,000–15,000 miles |
| Run the AC | A few minutes weekly, year-round |
About Master AutoTech Rexburg
We’re a locally owned shop that treats every vehicle like it belongs to a neighbor. This North Yellowstone Highway shop has served the Upper Valley as Madison Automotive for more than a decade and is joining Master AutoTech, Utah’s largest auto repair franchise. Every technician here earns ASE certification within 90 days of joining the team.
You’ll find us on North Yellowstone Highway just south of East Moody Road, a few minutes from US-20 Exit 337. Pull into our lot right out front.
Wait in our waiting room with free Wi-Fi while we work, or run a quick errand at the nearby Walmart. We take care of drivers from Rexburg, Sugar City, Rigby, St. Anthony and Teton every day.
Download the Master AutoTech app and earn rewards
- Rewards & offersOffers and rewards land right in the app, not in a drawer full of coupons.
- Check-engine alertsSee the actual codes your car is throwing and message the shop about them.
- Maintenance trackingKnow what’s due and what’s overdue, with a weekly report on your vehicle.
- Glove BoxKeep registration, insurance and service records in one place.
How to get rewards: download the free app and your offers and rewards land right in it, ready to use at your next visit. Open the app before your visit to see what’s waiting for you. Book a Master Oil Change and get a free Master Link that connects your car to the app.

Areas We Serve
Drivers come to Master AutoTech Rexburg for AC repair from across Rexburg, Sugar City and the Upper Valley.
- Rexburg
- Sugar City
- Rigby
- St. Anthony
- Teton
- Ririe
- Menan
- Newdale
Mon-Fri 8:00am-5:00pm | Sat Closed | Sun Closed
Get Directions · 1334 N Yellowstone Hwy, Rexburg
✓ 24-month / 24,000-mile warranty* *Exclusions apply.
✓ Financing available · See options
✓ Competitive, upfront pricing
✓ Get rewards in the Master AutoTech app
Nearby Master AutoTech Locations
Master AutoTech Chubbuck
73.7 miles away
4534 Yellowstone Ave
Chubbuck, ID 83202
Other Services at This Location
Frequently Asked Questions
Visit Master AutoTech Rexburg
Master AutoTech Rexburg
1334 N Yellowstone Hwy
Rexburg, ID 83440
Get Directions
Mon-Fri 8:00am-5:00pm
Sat Closed
Sun Closed
Getting here
- From US-20: Take Exit 337 and head south on North Yellowstone Highway; we’re on the left just past East Moody Road.
- Parking: Pull into our lot in front of the shop on North Yellowstone Highway.




