HVAC Maintenance in Indianapolis, IN

Why Choose Thiele’s HVAC Maintenance Service?

We know you have choices when it comes to HVAC maintenance in the Indianapolis area. But how many companies can say they’ve been around since 1883? Our experience is unmatched, and our commitment to value, integrity, and reliability has never wavered. Here’s why homeowners and businesses continue to call us year after year:

Upfront Pricing, No Surprises

We believe in clear, honest pricing with no hidden fees or gimmicks. You’ll always know what to expect before we start any work.

Skilled Technicians Who Get the Job Done Right

Our certified and insured team works on all types of HVAC systems. Whether it’s a routine tune-up or a complex repair, we have the knowledge and hands-on experience to handle it.

All the HVAC Services You Need

From new installations and replacements to ongoing maintenance and emergency repairs, we’re here for the entire lifespan of your heating and cooling system.

Maintenance Plans That Work for You

Seasonal tune-ups, priority scheduling, and repair discounts make our maintenance plan a smart, hassle-free way to take care of your HVAC system.

A Bryant Authorized Dealer You Can Rely On

We install and service Bryant’s high-efficiency heating and cooling systems, offering energy savings, reliable performance, and long-term comfort.

A Reputation Built on Happy Customers

Our five-star reviews tell the story—homeowners and businesses across Central Indiana trust Thiele for quality service and expert care.

Serving Indianapolis and Beyond

We provide HVAC maintenance to homes and businesses in Avon, Brownsburg, Carmel, Fishers, Franklin, Greenfield, Greenwood, Lebanon, Mooresville, Noblesville, Plainfield, Shelbyville, Speedway, Westfield, Whiteland, Zionsville, and more.

No matter who installed your system or how old it is, we’ll service it like it’s our own. At Thiele Heating & Air Conditioning, we treat every customer with respect and every home with the attention it deserves.

Heating and Air Conditioning Maintenance Services

One of the most common questions we get is, “Is HVAC maintenance really necessary?” The answer? Yes! No matter how new or well-built your system is, every HVAC unit needs routine maintenance to stay efficient, prevent repairs, and last as long as possible.

We provide expert tune-ups for all heating and cooling systems, including:

Furnace Maintenance

Indianapolis winters can be brutal, and your furnace needs to be in top shape to keep your home warm. The best time to schedule maintenance is in early fall before the first cold snap. Our technicians inspect the burners, clean the heat exchanger, check gas connections, and test the ignition system for safe and consistent heating. We also tighten electrical components, assess airflow, and make sure your thermostat is calibrated for even, reliable warmth all season.

Boiler Maintenance

A well-maintained boiler delivers steady heat without wasted energy, but neglecting it can lead to leaks, pressure issues, or uneven heating. We recommend scheduling an inspection in the fall before winter demand increases. Our team flushes the system to remove sediment, checks pressure levels, tests safety valves, and inspects the expansion tank. We also assess the pump and piping for potential leaks and make sure the system is operating at peak performance.

Central Air Conditioner Maintenance

If you want to avoid summer breakdowns, a spring AC tune-up is essential. Over time, dust and debris can clog the coils, reducing cooling power and increasing energy use. We clean both the condenser and evaporator coils, inspect refrigerant levels, and check for any leaks. Our team also lubricates moving parts, tests airflow, and clears the condensate drain to prevent water buildup. A well-maintained AC keeps your home cooler while preventing mid-season repairs.

Heat Pump Maintenance

Because heat pumps provide both heating and cooling, they need maintenance twice a year, in the fall and spring. We check refrigerant levels, clean the coils, and inspect the reversing valve to ensure smooth transitions between heating and cooling. Our technicians also test the blower motor, examine electrical connections, and verify that the defrost cycle is working properly. With regular care, your heat pump will run reliably no matter the season.

Geothermal System Maintenance

Geothermal systems are long-lasting and energy-efficient, but they still require annual maintenance to prevent issues. If you use it primarily for heating, schedule service in the fall; if cooling is the priority, book maintenance in the spring. Our team inspects the underground loop system for blockages, checks antifreeze levels, and assesses the heat exchanger for wear. We also examine the air handler, test system controls, and make any necessary adjustments.

Ductless Mini Split Maintenance

Ductless mini splits may be smaller HVAC units, but like any system, they need routine maintenance to prevent wear and tear. We suggest scheduling service in the spring for cooling and in the fall for heating. Our technicians clean the air filters, inspect the refrigerant lines, and check for leaks that could impact performance. We also test each zone’s controls, clear any debris from the outdoor unit, and make sure all electrical components are in good condition.

Even if it’s been a while since your last tune-up, it’s never too late to get back on track. Thiele Heating & Air Conditioning is always here to provide expert HVAC maintenance whenever you need it.

DIY HVAC Maintenance Tips: What We Recommend for Our Customers

There are a few simple ways to help your heating and cooling system between professional tune-ups. A little effort goes a long way in preventing breakdowns and keeping your home comfortable.

• Change Your Air Filter Regularly: A clogged air filter makes your system work harder and can even lead to overheating or freezing up. Check it monthly and replace it every 1–3 months based on dust, pets, and usage.
• Keep Outdoor Units Clear: Your air conditioner or heat pump needs proper airflow to work efficiently. Keep at least two feet of space around the unit by trimming back bushes, clearing leaves, and removing any obstructions.
• Check Vents and Registers: Closing vents or placing furniture over them can throw off airflow and put unnecessary strain on your system. Make sure all registers are open and free of obstructions to maintain proper circulation.

While these small tasks help, they’re no substitute for professional HVAC maintenance services. Our tune-ups go beyond what you can do at home, covering deep cleaning, refrigerant checks, electrical testing, and system calibration. Attempting too much on your own can risk damage, void your warranty, or even create safety hazards—leave the complex work to trained professionals.

Schedule Your HVAC Maintenance Service in Indianapolis, IN Today

At the end of every tune-up, we’ll give you a full rundown of your system’s condition—what’s working well, any areas of concern, and how much life your equipment has left. If we find minor issues, we’ll fix them on the spot. If a larger repair is needed, we’ll get the parts quickly and return as soon as possible to take care of it.

Routine maintenance isn’t just about today—it’s about protecting your comfort all year long. Our goal is to help you avoid sudden breakdowns in the heat of summer or dead of winter, giving you peace of mind when you need your HVAC system most. Plus, if your system is aging and you’re starting to think about replacement, we can help you plan ahead and explore financing options when the time comes.

Your comfort, health, and safety are our top priorities, and a well-maintained HVAC system delivers on all three. Let Thiele Heating & Air Conditioning be the team that keeps your heating and cooling system running at its best. Schedule your HVAC maintenance in Indianapolis, IN, today!