Heavy-Duty Coolant System Repair in Phoenix, AZ
If your engine temperature’s spiking or you’ve spotted coolant under your rig, it’s time to act fast. At Complete HTR, we repair and maintain coolant systems for heavy-duty trucks, trailers, RVs, buses, fleets, and off-road equipment. From leaking hoses and clogged radiators to failed water pumps and fan clutches, we keep your cooling system in peak condition.
Our certified techs repair:
- Radiators, coolant hoses, clamps, and fittings
- Thermostats and temperature sensors
- Water pumps and coolant reservoirs
- Fan clutches, cooling fans, and belts
- Pressure testing and coolant flushes
We take overheating seriously—it’s one of the fastest ways to destroy an engine. That’s why we perform accurate diagnostics and get the repair done right, so you’re not left on the side of the road.
Why Choose Us?
Cooling problems don’t just stop you—they can ruin your engine. At Complete HTR, we act fast to find and fix the root cause before it becomes a major expense.
- In-shop service for cooling systems on trucks, trailers, RVs, buses, and equipment
- Pressure testing and system diagnostics performed by experienced techs
- OEM-quality parts and coolant designed for heavy-duty demands
- Mobile cooling system repair available within 50 miles of Phoenix
- Free coffee while you wait in our shop lounge
- Pick-up and drop-off service available upon request
From simple hose leaks to major radiator replacements, we’ve got the knowledge, tools, and inventory to keep your truck cool under pressure.
Mobile Services and Roadside Assistance Within 50 Miles
Complete HTR provides mobile cooling system repair and roadside assistance within 50 miles of Phoenix, AZ. If you're dealing with overheating or coolant loss and can’t make it in, our mobile units can perform on-site diagnostics and emergency repairs to get you moving again.
Schedule Your Coolant System Repair Now: Call 623-745-5896!
Don’t risk engine failure. Call 623-745-5896 now to schedule your cooling system repair with Complete HTR and keep your truck running cool.
FAQs
What Areas Do You Serve?
We are located at 2450 S 7th Street Phoenix, AZ 85034 off the I-17 and 7th Street. We also proudly serve the greater Phoenix area, including Tempe, Glendale, Mesa, Scottsdale, Chandler, and more.
Can I Still Drive With a Coolant Problem?
It’s not recommended. Low coolant or a failing cooling component can cause your engine to overheat quickly, leading to serious internal damage. If you suspect an issue, shut it down and get it checked.
What Are Common Signs of a Bad Cooling System?
Watch for engine overheating, coolant leaks, steam from under the hood, or low reservoir levels. These are all signs your cooling system needs immediate attention.
How Can I Get in Touch?
Call 623-745-5896. One of our technicians will schedule your coolant system repair—either at our Phoenix shop or on-site if you're within 50 miles.
Don't Take our word for it.
Read Customer Testimonials.
"Great reliable truck repair and mobile work. Ivan and Adrain great service guys."
"Amazing customer service, fair pricing and quick in and out. Called first, made a same day appointment, was out in about 5 hours. I definitely recommend them for the truck driver in need of service."
"Had DEF pump replaced on one of our Freightliner Cascadias. Service was fast, friendly and very economical. Will recommend to others. Small but Great place who will treat you right!"
Contact Us
Let us know what is going on with your vehicle, and we will get back to you soon with a quote.