TOOWOOMBA & DARLING DOWNS
Electrical glitches shouldn't stall your productivity. SMITH Diesel Fitting's dedicated auto electrical team delivers fast fault diagnostics, precision rewiring, air conditioning and ECU tuning, minimising downtime with mobile service across Toowoomba and the wider region.
Air Conditioning & Auto Electrical Services
Dedicated In-House Auto Electrical Team Advanced Electrical Diagnostics & Repairs Precision Wiring Fault Finding ECU Tuning for Improved Performance Air Conditioning Servicing & Repairs
AUTO ELECTRICAL & AIR CONDITIONING
Auto Electrical & Air Conditioning Specialists for Heavy Equipment Across Toowoomba & the Darling Downs
Electrical faults and air conditioning failures on heavy machinery are more than an inconvenience. They can bring an operation to a standstill or make working conditions unbearable during Queensland's long, hot summers. SMITH Diesel Fitting provides expert auto electrical diagnostics and repairs, along with full air conditioning servicing, for agricultural, earthmoving and road transport equipment across Toowoomba and the Darling Downs.
Our auto electrical team handles everything from complex wiring faults and sensor failures to full A/C re-gassing and system repairs. On-site at your property or worksite, or at our Wellcamp workshop.
WHAT WE DO
Air Conditioning & Auto Electrical Services We Offer
From a blown fuse to a full electrical system fault, our team has the tools and experience to diagnose and fix it right the first time.
Auto Electrical Diagnostics
Modern heavy equipment relies on complex electrical and electronic systems. Our qualified auto electrical team uses professional diagnostic tools to accurately identify faults — including fault codes, live data, circuit testing, and wiring diagnosis — across all major brands and equipment types.
Air Conditioning
Re-gassing
Lost your A/C cooling performance? In most cases, that points to a refrigerant leak or an internal blockage. Checking system pressures is always our first step. Our auto electrical team carries out full A/C re-gassing and pressure diagnostics across all types of heavy equipment, from tractors and excavators to trucks, restoring reliable cooling fast.
Full A/C System Repairs
Beyond re-gassing, we diagnose and repair all A/C system faults. Compressor failures, condenser damage, leaking hoses, faulty expansion valves and control system issues. We fix the cause, not just the symptom.
Wiring Repairs & Electrical Fault Finding
Wiring faults on heavy machinery can be notoriously difficult to trace. We have the experience and the right equipment to find and fix shorts, open circuits, damaged looms, and connector faults, getting your machine back to full electrical health.
Alternator & Starter Motor Repairs
Charging system failures and starter motor faults can strand your equipment at the worst time. We test, repair and replace alternators and starter motors across agricultural, earthmoving and transport machinery.
Sensor & Component Replacement
Faulty sensors, solenoids, switches and electrical components cause all kinds of symptoms — from fault codes and warning lights to performance issues and intermittent failures. We diagnose and replace the right component, not guess.
Lighting & Accessory Installations
Work light installations, tow wiring, accessory circuits and other electrical additions are carried out to a professional standard. Properly fused, correctly rated, and neatly installed.
ECU Tuning
Our auto electrical team offers advanced ECU tuning to help optimise power, torque and fuel efficiency across agricultural, earthmoving and transport equipment, backed by the same accurate diagnostics and rapid turnaround the team is known for.
Battery Testing & Replacement
A failing battery is a common cause of start failures and electrical gremlins in heavy equipment. We carry out load testing and replace batteries across all machinery types.
EQUIPMENT WE SERVICE
Auto Electrical & A/C Services Across All Equipment Types
We service air conditioning systems and carry out auto electrical repairs on a wide range of heavy machinery.
Telehandlers & Loaders
Skid Steers & Compact Equipment
Other Heavy Equipment
Agricultural Machinery
Earthmoving Equipment
Road Transport & Trucks
We understand a broken A/C in Queensland summer or an electrical fault that stops a machine isn't something you can wait weeks to fix. We work efficiently to get your equipment back in service fast.
Fast Turnaround
As a full-service diesel fitting and mechanical business, we handle A/C and auto electrical alongside engine, hydraulic and drivetrain repairs — so you don't need multiple contractors on the same job.
One Team for Everything
Over a decade of experience servicing auto electrical and air conditioning needs for agricultural, earthmoving and transport businesses across Toowoomba and the Darling Downs.
Serving the Region Since 2013
WHY SMITH DIESEL FITTING
What Sets Us Apart
Agricultural, earthmoving and transport operators across the Darling Downs trust SMITH Diesel Fitting for reliable auto electrical and air conditioning repairs. Every time.
Dedicated In-House Auto Electrical Team
Our in-house auto electrical team brings specialist expertise to every job, not a generalist having a go, but qualified tradespeople with the right tools and the right training.
Mobile on-site service means you don't have to transport heavy machinery to get your A/C or electrical faults fixed. We come to your property or worksite across Toowoomba and the Darling Downs.
We Come to You
We don't guess and replace parts hoping to fix the fault. Professional diagnostic tools and proper fault-finding processes mean we identify the actual problem before any work begins.
Accurate Diagnosis First
Not sure if we cover your area? Get in touch — we're happy to discuss your location.
Gatton
Dalby
Clifton
Millmerran
Pittsworth
Oakey
Western Downs
Lockyer Valley
Darling Downs
Toowoomba
SERVICE AREAS
Auto Electrical & A/C Services Across South-East Queensland
Based in Wellcamp, we travel across a wide area to carry out auto electrical and air conditioning repairs on-site. Our mobile service covers:
COMMON QUESTIONS
Air Conditioning & Auto Electrical FAQs
Do you service both at your workshop and on-site?
Yes. You're welcome to bring your equipment to our Wellcamp workshop, or we can come to you. For large or heavy equipment that's difficult to transport, our mobile service is the practical option. Either way, you get the same auto electrical team and the same quality workmanship.
Can you help with electrical gremlins and intermittent faults?
Intermittent electrical faults are some of the most frustrating issues on heavy machinery — and some of the most important to get right. We use proper diagnostic equipment and systematic fault-finding processes to track down the root cause, not just treat the symptom.
How do I know if my A/C needs a re-gas or a full repair?
If your A/C has gradually lost cooling performance, that's usually a sign of a refrigerant leak or an internal blockage — checking system pressures is always our first step, rather than simply topping up the gas. If it's making unusual noises, has stopped working entirely, or shows signs of a compressor or system fault, a full diagnosis is needed too. We'll assess the system and tell you exactly what it needs before any work begins.
Do you offer mobile auto electrical and A/C repairs on-site?
Yes. We offer mobile on-site auto electrical and A/C services across Toowoomba, the Darling Downs, Lockyer Valley, and Western Downs. We bring our equipped service vehicle to your property or worksite — minimising downtime and avoiding the cost of transporting heavy machinery.
Can you diagnose and repair auto electrical faults on all brands?
Yes. Our auto electrical team carries professional diagnostic tools that cover all major brands of agricultural, earthmoving and transport equipment. We carry out proper fault diagnosis — reading fault codes, testing circuits and checking wiring — rather than guessing at the problem.
Do you carry out A/C re-gassing on agricultural and earthmoving equipment?
Yes. A/C re-gassing is one of our most common services, particularly heading into Queensland summer. We always check system pressures first to identify the cause — usually a refrigerant leak or internal blockage — before carrying out a re-gas. We service all types of heavy equipment including tractors, excavators, trucks and more — on-site at your property or at our Wellcamp workshop.
Ready to Book Your A/C or Auto Electrical Service?
Don't let a faulty A/C or electrical issue slow your operation down. Get in touch with SMITH Diesel Fitting today — expert auto electrical and air conditioning services across Toowoomba and the Darling Downs.
RTA: AU60764
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