Fishers, IN HVAC Services

Building a new home in Fishers or renovating an older one that’s never had central heat? Thiele makes it simple to get the right system installed and running the way it should. We install gas furnaces that deliver steady, even warmth all winter long and heat pumps that give you both heating and cooling in one efficient setup. For spaces that always seem a little colder—like finished basements, bonus rooms, or garages—ductless mini splits are a great way to add heat without tearing into walls for ductwork.

We also offer dual-fuel systems, which pair a heat pump with a gas furnace. The heat pump handles most of the heating to save energy, and when temperatures drop into the teens, the furnace automatically kicks in to keep things comfortable. No matter what you’re building or updating, our team helps you choose the best setup and installs it quickly, safely, and up to code.

• Furnace Installation 
• Boiler Installation 
• Heat Pump Installation 
• Geothermal Installation
• Ductless Mini Split Installation 
• Dual Fuel HVAC Installation

Winters in Fishers are long and cold, and when your heat stops working, it doesn’t take long for the house to get uncomfortably cold. Maybe the furnace won’t kick on, the air coming out of the vents feels lukewarm, or the system just can’t seem to keep up. Whatever the issue, waiting it out isn’t an option because not only is it unsafe for your family, but even small heating problems can turn into bigger (and more expensive) ones fast.

At Thiele, our technicians work on furnaces, heat pumps, boilers, and ductless mini splits, and we know the common issues Indiana homeowners face—clogged filters, dirty burners, faulty sensors, or worn-out parts that cause uneven heat or constant cycling. We’ll find what’s wrong, explain what needs to be done, and get your system back up and running so your home stays warm.

• Furnace Repair
• Boiler Repair
• Heat Pump Repair
• Geothermal Repair
• Ductless Mini Split Repair

Regular maintenance is the key to a warm and worry-free winter! Thiele recommends annual maintenance for all heating systems, including furnaces, boilers, heat pumps, and ductless mini splits. Ideally, schedule your heating system tune-up before the winter months to allow our team to optimize your system’s performance for peak efficiency. 

During a heating tune-up, our technicians perform a detailed inspection, cleaning clogged filters and components, lubricating moving parts, and checking vital safety features. We also calibrate controls and ensure proper airflow for optimal comfort and energy savings. By proactively addressing potential issues, you can prevent unexpected breakdowns, extend your system’s lifespan, and maintain your home’s comfortable warmth throughout the winter.

• Furnace Tune-Up
• Heat Pump Tune-Up
• Ductless Mini Split Tune-Up

Most heating systems do their job for well over a decade, but eventually they start showing their age. Maybe your furnace needs another repair, your heat pump runs nonstop, or your energy bills keep climbing no matter what you do. When that happens, it’s usually a sign your system is working harder than it should—and that it might be time for something new.

Thiele installs new furnaces, heat pumps, and ductless mini split systems that heat your home more efficiently and quietly than older models. We’ll help you choose a system that fits your space and your budget, and make sure it’s installed safely and correctly. The result is simple—a home that stays warm, bills that stay manageable, and peace of mind knowing your system will be ready for the next Indiana winter.

• Furnace Replacement
• Heat Pump Replacement
• Ductless Mini Split Replacement

Cleaner air makes a big difference in how your home feels—and how you feel. Whole-home air purifiers work with your HVAC system to capture dust, pollen, pet dander, and other particles as air circulates through your house. They’re especially helpful for anyone with allergies, asthma, or breathing sensitivities.

At Thiele, we install purifiers that connect directly to your ductwork, keeping every room fresh—not just the one with a plug-in unit. We also repair and replace older systems and can help you find the right model for your home’s size and setup.

• Air Purifier Installation
• Air Purifier Repair

If you’re tired of dust buildup or stuffy indoor air, an air cleaner could be the answer. These systems use high-efficiency filters to remove tiny particles—like smoke, pollen, and fine dust—that regular filters miss. They’re a simple upgrade that makes a noticeable difference in air quality and comfort.

We install air cleaners that integrate seamlessly into your HVAC system, filtering air every time it runs. Thiele also handles repairs and replacements to make sure your air cleaner keeps working its best year-round.

• Air Cleaner Installation
• Air Cleaner Repair

When Indiana humidity sets in, the air inside your home can start to feel damp and sticky. A whole-home dehumidifier works with your HVAC system to pull excess moisture from the air before it spreads through the house. It’s great for reducing musty smells, preventing mildew, and helping your AC run more efficiently.

We install and service dehumidifiers that manage humidity levels automatically, keeping your home comfortable without the hassle of portable units.

• Dehumidifier Installation
• Dehumidifier Repair

Once winter hits and the furnace runs nonstop, the air inside can get painfully dry. A whole-home humidifier adds just the right amount of moisture back into your air, helping with dry skin, scratchy throats, and even protecting wood floors and furniture from cracking.

We install and repair humidifiers that connect directly to your HVAC system, balancing humidity throughout your home so it feels comfortable from top to bottom.

• Humidifier Installation
• Humidifier Repair

Sometimes the problem isn’t your HVAC system—it’s your thermostat. If it’s not reading temperatures correctly or sending the right signals, your whole system can run too long or not at all.

Our technicians can repair faulty wiring, sensors, or components, or install a new smart thermostat that gives you better control and energy savings. It’s a small upgrade that makes a big difference in comfort and efficiency.

• Thermostat Installation
• Thermostat Repair

UV lights are installed inside your HVAC system to kill bacteria, mold, and viruses as air passes through. They help reduce airborne germs while also keeping your system cleaner and more efficient by preventing buildup on the coils.

We install and service UV lights that work quietly in the background to protect both your air quality and your equipment.

• UV Light Installation
• UV Light Repair

If parts of your home are always warmer or cooler than others, an HVAC zoning system can help. Zoning divides your home into sections, each with its own thermostat, so you can heat or cool only the rooms you’re using.

It’s an ideal setup for multi-level homes, large floor plans, or families with different comfort preferences. We design and install zoning systems using smart thermostats and automatic dampers for better control, energy savings, and comfort in every room.

• HVAC Zoning Installation