HVAC Maintenance in Fishers, IN

Join the Club: Save Time and Money By Enrolling in Our HVAC Maintenance Agreement

Want an easier way to take care of your HVAC system? Our Annual “Rewards” Service Agreement makes it simple and cost-effective. As a member, you’ll receive two seasonal maintenance visits each year—one in the spring for your cooling system and one in the fall for your heater. We clean components, make performance adjustments, and spot small issues before they turn into major repairs.

Plan perks Include:

• Bi-annual heating and cooling system tune-ups
• Priority scheduling for HVAC service calls
• 15% discount on repairs and replacement parts

Let our team handle the upkeep while you enjoy more comfort, fewer emergencies, and lower long-term costs. Signing up is easy—just give us a call to learn more!

Expert HVAC Maintenance Backed by 100+ Years of Experience

You want a team you can trust—one with experience, integrity, and a commitment to getting the job done right. That’s exactly what you get with Thiele Heating & Air Conditioning.

Here’s what makes our HVAC maintenance services stand out:

Upfront Pricing You Can Trust

No hidden fees, no last-minute charges—just honest pricing you’ll see before any work begins. We keep it simple so you always know what to expect.

Technicians Who Know Their Stuff

Our trained, insured HVAC pros have real experience working on all brands and systems. They show up ready to get the job done right the first time.

All the HVAC Services You Need

We do more than just maintenance. From system repairs to full replacements and indoor air quality upgrades, we’ve got your home covered.

Reliable Bryant System Experts

As a Bryant Authorized Dealer, we install and service systems known for energy efficiency and long-term reliability—perfect for Indiana homes.

Fishers’ Trusted HVAC Company

Since 1883, homeowners in Fishers and Central Indiana have turned to Thiele. We’ve earned their trust—and hundreds of 5-star reviews.

When you choose Thiele Heating & Air Conditioning, you’re choosing dependable service, quality workmanship, and a team that treats your home like their own.

Heating and Air Conditioning Maintenance Services

Whether your system is brand-new or has a few seasons under its belt, proactive care can keep it running stronger, longer, and more efficiently.

At Thiele Heating & Air Conditioning, we provide detailed, professional tune-ups for every kind of HVAC system in Fishers. Here’s what we cover:

Furnace Maintenance

Uneven heat, strange smells, or loud cycling can be early signs that your furnace needs service. Our team checks every component—from burners to blower motors—for safe, efficient operation. We clean and adjust parts so your system can heat consistently without overworking. A fall furnace tune-up gives you peace of mind before winter hits.

Boiler Maintenance

Boilers offer quiet, even heating, but only if they’re maintained properly. We inspect valves, expansion tanks, and pump performance while flushing out mineral buildup. Any small issue, like a pressure imbalance, can lead to bigger problems if ignored. Let us handle the details so your radiant heat stays steady all season long.

Central Air Conditioner Maintenance

AC tune-ups are your first defense against an expensive mid-summer breakdown. We focus on system airflow, refrigerant charge, coil cleanliness, and motor function. A well-maintained AC runs cooler, quieter, and more efficiently. You’ll feel the difference in both your comfort and your monthly energy bill.

Heat Pump Maintenance

Because heat pumps handle double duty, they need biannual maintenance to stay sharp. We evaluate the reversing valve, defrost settings, and compressor function for seamless seasonal changeovers. Dirt and wear can sneak up fast on these all-in-one systems. Twice-a-year care helps you get the most from your investment.

Geothermal System Maintenance

While the underground loops can last for decades, the indoor geothermal components still need annual servicing. We test antifreeze levels, inspect the heat exchanger, and check for control errors or performance dips. If your system starts struggling to maintain temperature, it might be time for a deeper look. Our experts know exactly what to check.

Ductless Mini Split Maintenance

Mini splits are quiet, flexible, and efficient—but only when they’re clean and calibrated. We clean washable filters, ensure unobstructed airflow, and inspect each indoor unit for performance. Zoning issues or reduced output can often be fixed with a simple tune-up. Whether it’s one unit or several, we’ve got it covered.

Whether it’s been months or years since your last HVAC tune-up, we’ve got you covered. Thiele Heating & Air Conditioning is just a call away for the professional care your system deserves.

Keep Your System in Shape Between Visits With These DIY HVAC Maintenance Tips

Even small steps can go a long way toward preserving your HVAC system’s performance. While professional tune-ups are essential, there are a few things you can do at home to help keep everything running smoothly.

Swap Out Air Filters Frequently

Your air filter catches dust, debris, and allergens—but when it clogs up, it restricts airflow and overworks your system. Check your filter once a month, especially if you have pets or allergies, and replace it every 1–3 months as needed.

Clear Around Outdoor Units

Your AC or heat pump needs breathing room. Keep the area around your outdoor unit free from weeds, leaves, mulch, or fencing. At least 24 inches of clearance ensures better airflow and prevents overheating.

Check Vents and Duct Openings

It’s easy to overlook blocked vents, but closed registers or covered duct openings can reduce efficiency and create hot or cold spots in your home. Make sure furniture, rugs, or curtains aren’t restricting airflow.

Of course, DIY maintenance has its limits. Our professional HVAC maintenance services include detailed inspections, deep cleaning, refrigerant checks, and system calibration that go far beyond what you can do on your own. Trying to fix internal components without training could lead to damage—or even void your warranty.

Schedule HVAC Maintenance in Fishers, IN With a Team You Can Count On

Once your seasonal tune-up is done, we won’t just pack up and go. Our technicians walk you through what they found—what’s in great shape, what needs monitoring, and whether any repairs are recommended. If small issues can be handled during the same visit, we’ll get it done. If something bigger is needed, we’ll schedule a return appointment ASAP or possibly talk to you about an HVAC replacement.

HVAC maintenance isn’t just a once-a-year checkbox—it’s how you protect your home’s comfort, improve indoor air quality, and lower the risk of expensive repairs down the road. With Thiele Heating & Air Conditioning, you’ll always have a reliable team by your side when you need us most.

Ready to get started? Call or book online today to schedule your HVAC maintenance in Fishers, IN.