Carmel, IN HVAC Services

Building a new home in Carmel or updating one that’s never had central heat? Thiele Heating & Air Conditioning makes it simple to get the right system installed and working efficiently from day one. We install gas and electric furnaces that heat your entire home, boilers that deliver dependable, even warmth, and heat pumps that handle both heating and cooling in one efficient system. For hard-to-heat spaces like basements, garages, or additions, ductless mini splits provide targeted comfort without the need for ductwork.

We also install geothermal heat pumps, which use the steady temperature underground to heat and cool your home naturally while dramatically reducing energy costs. Interested in a dual-fuel system that pairs a furnace with a heat pump? It’s a smart option for Hoosiers, and we can tell you all about how they work and help you save.

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

When your heat stops working, you don’t have time to wait around. Thiele handles all types of heating repair, including furnaces, boilers, heat pumps, and ductless mini splits. We also offer emergency heating repair when the temperature drops and you need help fast.

Furnaces can struggle with ignition issues, dirty burners, or worn-out blower motors. Boilers may lose pressure or start leaking, and heat pumps sometimes freeze up or get stuck in cooling mode. Ductless mini splits can stop responding or push out weak air when the filters or coils get clogged. Whatever the problem, we start with a full system inspection to find the real cause—not just the symptom.

Once we know what’s wrong, we’ll explain it and give you a clear quote with repair options. When we’re done, we’ll test your system, make sure your heat is running like it should, and leave your home as clean as we found it. We have heating solutions for every issue that you’re facing.

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

Most manufacturers and HVAC professionals—including us—recommend heating maintenance at least once a year. HVAC maintenance isn’t just for show; it’s how you keep your system running safely, efficiently, and within warranty. Annual tune-ups help catch small problems before they turn into big ones and can extend the life of your unit by not just months, but years. The money you save will be well worth it.

Our maintenance service covers everything your system needs. For furnaces, we clean burners, check flame sensors, and test safety controls. For heat pumps, we inspect the reversing valve, clean the coils, and make sure it switches between heating and cooling properly. For ductless mini splits, we wash filters, clear drain lines, and check that each zone is delivering strong, even heat. A quick visit once a year keeps your system reliable, helps lower energy costs, and prevents those no-heat surprises on the coldest days.

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

Winters in Carmel can be tough on heating systems. Long stretches of freezing temperatures, sudden cold snaps, and heavy daily use all add up—especially for older equipment. Most furnaces and heat pumps last around 12 to 15 years, while ductless mini splits can often make it closer to 20 with proper care. But over time, parts wear out, efficiency drops, and repairs start adding up.

When a system is beyond repair or the cost to fix it no longer makes sense, Thiele can help you replace it with something newer, safer, and more efficient. We’ll walk you through your options and make sure your new system is sized correctly for your home—because many existing units aren’t.

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

Clean, healthy air makes a huge difference at home. Whole-home air purifiers work with your HVAC system to capture dust, dander, pollen, and other particles before they circulate through your house. They’re especially helpful for allergy sufferers and anyone who wants a cleaner, healthier indoor space.

We install and repair whole-home air purifiers that connect directly to your ductwork, keeping every room fresh and evenly filtered. Our team can also replace older models or help you choose one that matches your home’s layout and HVAC system.

• Air Purifier Installation
• Air Purifier Repair

If dust or stuffy air is a constant problem, an air cleaner can help. These systems use advanced filters to remove tiny particles like smoke, dust, and mold spores that standard filters can’t catch. They’re a simple, cost-effective way to make your air feel noticeably cleaner.

We install and repair air cleaners that work directly with your HVAC system, filtering air every time it runs. Whether you’re adding one for the first time or replacing an older unit, we’ll make sure it’s installed right and runs efficiently.

• Air Cleaner Installation
• Air Cleaner Repair

When humidity spikes during Indiana’s summers, your home can feel sticky and musty. Whole-home dehumidifiers remove that excess moisture before it spreads, helping your air conditioner work more efficiently and keeping mold and mildew at bay.

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

• Dehumidifier Installation
• Dehumidifier Repair

During Carmel winters, the air inside can get dry enough to irritate your throat and skin or even crack wood furniture and floors. A whole-home humidifier restores moisture throughout your home, creating a more comfortable and balanced indoor environment.

We install and repair humidifiers that connect directly to your HVAC system for consistent humidity control all winter long.

• Humidifier Installation
• Humidifier Repair

A lot of heating and cooling issues trace back to an old or malfunctioning thermostat. If it’s not reading temperatures correctly, your system might overwork or fail to keep up.

Our technicians can repair faulty sensors and wiring or install smart thermostats that give you precise control and help you save energy.

• Thermostat Installation
• Thermostat Repair

UV lights installed inside your HVAC system help kill bacteria, mold, and viruses as air passes through, keeping both your air and system cleaner. They also prevent buildup on coils, which helps your system last longer and run more efficiently.

We install and service UV lights that work quietly in the background to keep your air healthy and your system in top shape.

• UV Light Installation
• UV Light Repair

If some rooms in your home always feel warmer or cooler than others, HVAC zoning can fix that. Zoning divides your home into sections, each with its own thermostat and airflow control, so you can heat or cool only where it’s needed.

It’s great for multi-level homes or families with different temperature preferences. We design and install zoning systems with smart thermostats and dampers for more control and comfort in every room.

• HVAC Zoning Installation