Heating & AC Service in Hemlock, MI
Certified by NAPA, backed by a 36-month nationwide warranty—auto care you can count on.
Expert Car AC Repair & Heating Services in Hemlock, MI

Michigan's extreme weather demands a reliable climate control system in your vehicle. At Hemlock Auto & Alignment, we provide complete automotive heating and air conditioning solutions to keep you comfortable year-round. When your AC stops blowing cold air during summer heat waves or your heater fails during harsh Michigan winters, our certified technicians deliver the expert repairs you need.
Comprehensive Auto AC and Heating Repair Services
AC System Diagnostics and Repair
Our advanced diagnostic equipment pinpoints exactly what's wrong with your air conditioning system. We perform thorough pressure tests, leak detection, and component inspections to identify failing parts before they cause bigger problems. Whether you need refrigerant recharging, compressor replacement, or evaporator core repair, we handle every aspect of AC service with precision.
Common AC Problems We Fix
- Refrigerant leaks and low coolant levels
- Faulty compressor clutches and worn compressors
- Clogged cabin air filters reducing airflow
- Electrical issues affecting AC operation
Professional AC Recharge and Leak Repair
When your AC blows warm air, the issue often involves refrigerant loss through small leaks. Our technicians use specialized UV dyes and electronic leak detectors to locate even the tiniest holes in your system. We repair leaks properly using quality seals and gaskets, then recharge your system with the correct refrigerant type for optimal cooling performance.
Heating System Repair and Maintenance
Michigan winters are no joke, and a functioning heater is essential for safety and comfort. We diagnose and repair all heating system components, from heater cores and thermostats to blower motors and control valves. Our team ensures your vehicle's heating system operates efficiently when temperatures drop.
Heater Core Replacement Services
- Complete heater core removal and installation
- Coolant system flushing and refill
- Climate control calibration and testing
Blower Motor and Fan Repairs
- Motor replacement for improved airflow
- Fan speed control switch repair
- Cabin air filter replacement for clean air circulation
Our Professional Repair Process
Initial System Inspection
Every heating and AC service begins with a comprehensive 15-point inspection. We test temperature output, check pressure levels, inspect belts and hoses, and evaluate all electrical connections. This thorough assessment helps us identify current problems and potential future issues.
Advanced Diagnostic Testing
Using factory-level diagnostic equipment, we perform precise tests on your HVAC system. Our computerized tools can detect refrigerant leaks as small as half an ounce per year, ensuring we find problems other shops might miss. We also test compressor operation, expansion valve function, and overall system efficiency.
Quality Repairs with Warranty Protection
Once we've identified the problem, we explain exactly what needs repair and why. We use only high-quality parts from trusted manufacturers and follow industry best practices for every installation. All repairs come with our comprehensive 36-month, 36,000-mile nationwide warranty for complete peace of mind.
Why Choose Hemlock Auto & Alignment for AC Repair
Certified Expertise You Can Trust
Our technicians hold certifications from NAPA Auto Care, Technet, and Certified Auto Repair networks. This means we stay current with the latest HVAC technology and repair techniques for all vehicle makes and models. We service everything except Mercedes and Land Rover vehicles.
Advanced Equipment and Tools
- Computerized refrigerant recovery and recharge machines
- Electronic leak detection systems
- Digital manifold gauges for precise pressure readings
- Factory-level diagnostic scanners
Transparent Pricing and Service
We believe in honest, upfront pricing with no hidden fees or surprise charges. Before any work begins, we provide a detailed estimate explaining exactly what needs repair and why. Our goal is to build long-term relationships through trust and quality service.
Fast, Reliable Service in Hemlock
Located at 16575 Gratiot Road, we're conveniently positioned to serve drivers throughout Hemlock, Midland, Freeland, Shields, Saginaw, and Merrill. Our efficient repair process means most AC and heating issues can be resolved the same day, getting you back on the road quickly.
Common HVAC Problems and Solutions
When Your AC Isn't Cooling Properly
If your air conditioning system struggles to maintain cool temperatures, several factors could be responsible. Low refrigerant levels, dirty condenser coils, or failing compressor components all reduce cooling efficiency. Our diagnostic process identifies the root cause, so we fix the problem correctly the first time.
Strange Noises from Your HVAC System
Unusual sounds often indicate mechanical problems within your heating or cooling system. Squealing belts, grinding compressor bearings, or rattling blower motors all require immediate attention to prevent costly damage. We can quickly isolate the source of noises and recommend appropriate repairs.
Inconsistent Temperature Control
When your climate control system can't maintain steady temperatures, the issue might involve faulty thermostats, stuck blend doors, or electrical problems. Our technicians have the expertise to diagnose complex HVAC control issues and restore proper temperature regulation.
What to Expect During Your Visit
Professional Customer Service
From the moment you call to schedule your appointment, our team provides friendly, knowledgeable assistance. We explain our findings in plain language, answer all your questions, and keep you informed throughout the repair process.
Clean, Comfortable Facility
Our modern shop features a clean, comfortable waiting area where you can relax while we service your vehicle. We respect your time and work efficiently to complete repairs as quickly as possible without compromising quality.
Follow-Up Support
After completing your AC or heating repair, we provide guidance on maintaining your system for optimal performance. We're always available to answer questions about your repair or help with any concerns that arise.
Customer Success Stories
Toni Kehoe
"First time going to Hemlock Auto & Alignment! Excellent communication and quick with getting job done!! Recommend 10/10!"
Patricia L Reynolds
"Great service and professional work! Was very supportive and organized and thorough on the test results for repairs and showed all the details that were needed for check up! Thank you!"
Michael Horton
"Hemlock Auto and Alignment has a new customer for life! They were able to get me in immediately, quickly identified the problem and most importantly, kept me in the loop with everything! Definitely recommend if you have a busy life and can't be without a car for long!"
Frequently Asked Questions
How often should I service my car's AC system?
We recommend having your AC system inspected annually before summer heat arrives. Regular maintenance includes checking refrigerant levels, cleaning condenser coils, and replacing cabin air filters. This preventive approach helps avoid costly repairs and ensures reliable cooling when you need it most.
Why is my AC blowing warm air in Hemlock, MI?
Several issues can cause warm air output, including low refrigerant due to leaks, faulty compressor operation, or electrical problems. Our diagnostic testing quickly identifies the specific cause, allowing us to provide targeted repairs rather than guessing at the problem.
How long do AC repairs typically take?
Most common AC repairs, such as refrigerant recharging or component replacement, can be completed the same day. More complex issues like heater core replacement may require additional time. We provide accurate time estimates upfront and keep you informed if circumstances change.
Do you service all vehicle makes for AC repair near me?
We service cars, SUVs, and light trucks of all makes and models except Mercedes and Land Rover. Our certified technicians have experience with domestic, Asian, and European HVAC systems, ensuring quality repairs regardless of your vehicle's origin.
What's included in your 36-month warranty?
Our comprehensive warranty covers all parts and labor for AC and heating repairs. This nationwide coverage means you're protected whether you're driving locally in Hemlock or traveling across the country. We stand behind our work with confidence.
Can you fix AC problems in older vehicles?
Absolutely! We regularly service HVAC systems in vehicles of all ages. While older systems may require more specialized attention or harder-to-find parts, our experienced team has the knowledge and resources to restore reliable climate control in vintage and classic vehicles.
How do I know if my heater core needs replacement?
Signs of heater core failure include sweet-smelling coolant odors in the cabin, foggy windows that won't clear, wet floor mats on the passenger side, or lack of heat output. Our diagnostic process can confirm heater core problems and provide repair options.
What causes AC compressor failure?
Compressor failure often results from contaminated refrigerant, electrical issues, or lack of proper lubrication. Regular maintenance and prompt repair of small problems help prevent expensive compressor replacement. We always investigate the root cause to prevent future failures.
Do you offer emergency AC repair services?
While we don't provide 24-hour emergency service, we understand the urgency of climate control problems. We offer same-day appointments when possible and work efficiently to restore your comfort quickly. Call us as early as possible for the best scheduling options.
How can I improve my car's AC efficiency?
Simple steps like parking in shade, using window shades, and running the AC on recirculate mode help improve efficiency. Regular maintenance, including clean cabin filters and proper refrigerant levels, also ensures optimal performance. We provide specific recommendations based on your vehicle's condition.
Contact Hemlock Auto & Alignment Today 16575 Gratiot Road, Hemlock, MI 48626 (989) 642-4423 Mon – Fri: 8:00 AM – 5:00 PM