Professional HVAC Repairs in St. Clair County

Reliable HVAC Repair in St. Clair County, MI
When your heating or cooling system starts acting up, you don’t have time to waste. At S&P Heating, we specialize in fast, expert HVAC repair services across St. Clair County, MI, including Port Huron, Saint Clair, and all surrounding areas. Whether your air conditioner is blowing hot air or your furnace is rumbling like a thunderstorm, we’re the HVAC contractor you can count on to handle all of your heating and cooling needs.
Fixing Heating & Cooling Systems for Homes and Businesses

Tailored Cooling Services for Your Community
Our commitment extends to cooling solutions for homes and businesses that are fine-tuned to match the unique climate and comfort requirements of our local residents and businesses. With a focus on precision, reliability, and efficiency, our specialized services cater to diverse cooling needs. Discover our array of expert air conditioning services designed to keep your space cool and comfortable, ensuring an environment perfectly suited to your local climate
- Clay Township
- Macomb
- Utica
- St. Clair Country
Why HVAC Repairs Shouldn’t Wait

What We Repair (Spoiler: Just About Everything)
We work on every major brand and every type of heating and cooling unit out there. Here’s what we commonly fix:
- Furnace repair and flame sensor issues
- Refrigerant leaks and failed compressors
- Faulty thermostats and control boards
- Blown capacitors and failed fan motors
- Boiler circulation issues
- Air handler and duct airflow problems
- Zone control malfunctions
Our Expert HVAC Repair Process
We keep it simple, honest, and fast—because that’s how HVAC work should be.
1. Fast Scheduling
When you call us for HVAC repair in Port Huron, we will act quickly with flexible booking and emergency options.
2. Certified Diagnosis
A licensed technician inspects your full HVAC system and pinpoints the issue—no guesswork.
3. Clear Estimate, No Surprises
We will walk you through the repair, pricing, and options before we get started.
4. Expert Service with Lasting Results
We use high-quality parts and proven techniques for reliable, long-lasting repair.
5. Peace of Mind
We test everything before we leave and back our work with a customer satisfaction promise.

How HVAC Repairs Protect Your Warranty and Investment
Restoring Comfort and Air Quality, Too
- Humidifier
- In-duct air purifier (like HALO-LED or iWave)
- Smart thermostat or zoning system
- Whole-home air conditioning filtration systems
Cleaner air starts with a healthy HVAC system—and we make sure it all works in harmony.


Why S&P Heating is Your Go-To for HVAC Repairs in MI
We’re not just your average HVAC company—we’re the friendly crew that shows up on time, does it right, and leaves your space better than we found it. Here is why locals across Port Huron and the surrounding areas choose S&P Heating to handle their HVAC needs:
- Rapid service calls, even in a pinch
- Honest, upfront pricing
- Licensed, insured, and certified technicians
- Repairs for furnaces, air conditioners, boilers, water heaters, and more
- Skilled in residential and commercial systems
- Backed by a 100% customer satisfaction guarantee
- Trusted throughout St. Clair County and the Blue Water Area
Frequently Asked Questions About HVAC Repair
How do you know your HVAC system needs repair?
Common signs include weak airflow, strange smells, odd noises, uneven temperatures, or a system that won’t turn on at all. You may also notice higher energy bills or frequent cycling on and off. If something feels off, trust your gut—it’s usually better (and cheaper) to catch the issue early.
Do you offer HVAC repair in Port Huron and Saint Clair?
Absolutely! We proudly serve Port Huron, Saint Clair, and the rest of St. Clair County, MI, including many nearby surrounding areas. Our local team is always ready to deliver fast, friendly, and dependable HVAC repairs where you need them.
What systems do you repair?
We repair just about everything—furnaces, boilers, ductless mini-splits, central AC, heat pumps, and more. Whether your system is gas, or even electric we’ve got the tools and training to fix it. No matter the brand or setup, our experienced technicians can handle it.
Can you fix your HVAC issue yourself?
Some simple things, like replacing filters or flipping a tripped breaker, are safe for a DIY attempt. But when it comes to wiring, refrigerant, motors, or anything complex, it’s best to call a professional. Attempting major repairs without training can cause more damage—or void your warranty.
What if you need an emergency HVAC repair in Port Huron?
We’ve got you covered! Our team offers emergency HVAC repairs in Port Huron and the surrounding area when you need help fast. Just give us a ring, and we’ll dispatch a technician to get your system back on track—day or night.
Is it better to repair or replace your HVAC system?
It depends on your system’s age and condition. If it’s under 10 years old and the repair is minor, fixing it is often the smart move. But if your unit is constantly breaking down or is over 15 years old, a new AC or furnace could be more cost-effective in the long term.
Will a repair help improve the air quality?
Yes, especially if your system has clogged filters, dirty coils, or airflow problems. These issues can spread dust and allergens around your home, hurting your indoor air quality. A proper repair restores clean, even airflow and helps you breathe easier.
Can you work on commercial HVAC systems, too?
Yes! We provide expert service for both residential and commercial HVAC systems, including rooftop units, zone controls, and high-capacity heating and cooling systems. Whatever size your building, we have the experience to get it done right.
How often should you get your HVAC system tuned up?
We recommend scheduling a tune-up twice a year—once in the spring for your AC and once in the fall for your heating system. Regular maintenance catches minor issues early, improves energy efficiency, and extends the life of your equipment.