Thermostat Installation in Greenville, SC
We help you choose the right thermostat for your home, install it correctly with the proper wiring, and make sure it works with your existing HVAC system.
Greenville's Trusted Thermostat Installation Team
Air Today Heating & Cooling has been installing thermostats in Greenville and the Upstate for over 45 years, and we’ve seen that the wrong thermostat or a botched install is one of the most common reasons HVAC systems run poorly. Most homeowners assume any thermostat will work with any system, but compatibility issues, missing C-wires, and incorrect wiring can leave you with a unit that drops Wi-Fi, cycles your equipment incorrectly, or fails to control temperature accurately.
According to ENERGY STAR, a properly installed and programmed smart thermostat can save up to 15% on heating and cooling costs, but only if it is matched to your system and wired correctly.
When you call us out, we walk through your existing setup, recommend a thermostat that fits your home and your habits, and handle the full installation including any C-wire or adapter work your system needs. If you only want a basic programmable model, we will install that and make sure it works the way it should. If a smart thermostat actually makes sense for your home, we will explain exactly why and walk you through the brands and features that fit your budget. We will not push you toward features you do not need.
We show up on time, keep the work area clean, and test your system fully before we leave. That approach has kept us in business for nearly five decades, and it is why homeowners across Greenville keep calling us back for thermostat installs, system upgrades, and everything in between.
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Awards & Recognition
Air Today Heating & Cooling has been named a 2024 Best of South Carolina award winner in the HVAC Sales & Service Companies category by Guide to South Carolina. This recognition, awarded to fewer than 10% of businesses statewide, highlights our dedication to superior service and trusted expertise. We’re grateful to our Greenville community and proud to continue serving Upstate SC with top-quality furnace installation heating solutions.
100% Satisfaction Guarantee or Your Money Back!*
40+ Years of Residential HVAC Experience
Family-Owned, Locally Trusted
Programmable Thermostat Installation
A programmable thermostat is a good fit when you want better temperature control and lower energy bills without paying for smart features you will not use. Programmable models let you set temperature schedules for different times of day, so your system runs less when you are sleeping or away from home and ramps up before you wake up or get back.
Most homeowners who switch from a manual thermostat to a programmable one see a noticeable drop in their heating and cooling bills within the first few months. They also avoid the Wi-Fi connectivity issues, app dependencies, and learning curve that come with smart models.
Our programmable thermostat installation includes:
- Removal and safe disposal of your existing thermostat
- Verification of voltage and wiring compatibility with your HVAC system
- Mounting and wiring of the new programmable unit
- Initial schedule setup based on your daily routine
- Full system test across heating and cooling modes
- Walk-through of how to adjust the schedule and override settings
If your wiring or system is not compatible with the unit you picked, we will let you know before we start the install.
Smart and Wi-Fi Thermostat Installation
A smart thermostat makes sense when you want remote control over your home’s temperature, automatic scheduling that adapts to your habits, and detailed energy reports you can actually use.
Smart thermostats from brands like Google Nest, Ecobee, Honeywell Home, and Sensi connect to your home Wi-Fi and let you adjust your system from a phone, tablet, or voice assistant. They also use occupancy sensors and learning algorithms to reduce runtime when no one is home, which is where most of the 8 to 15% energy savings actually come from.
Our smart thermostat installation includes:
- Compatibility check between the unit you chose and your HVAC system
- C-wire installation or power adapter setup if your system needs one
- Mounting, wiring, and configuration of the new smart unit
- Wi-Fi setup and connection to your home network
- App pairing and initial schedule based on your usage
- Integration with Alexa, Google Home, or Apple HomeKit if you use those
- Full system test and walk-through of the app’s main features
If your existing wiring will not support a smart thermostat, we will explain your options before doing any work.
Thermostat Replacement
Replacement makes sense when your existing thermostat is failing, outdated, or no longer compatible with your system. Common signs include a thermostat that gives inaccurate temperature readings, a screen that goes blank or freezes, a system that short-cycles or will not stay on, or a unit that is over 10 years old and beginning to fail.
Replacement is also the right call if you are upgrading from an older HVAC system and the existing thermostat does not have the staging or zoning capabilities the new equipment requires.
Our thermostat replacement includes:
- Diagnosis of the existing thermostat to confirm it is the actual problem
- Recommendation on which replacement unit fits your home and HVAC equipment
- Removal and safe disposal of the old thermostat
- Wiring inspection and any C-wire work the new unit requires
- Mounting, wiring, and full configuration of the replacement
- System test across heating, cooling, and fan modes
- Walk-through of the new unit’s features and settings
If we find the issue is with your HVAC system itself rather than the thermostat, we will let you know before installing a new unit.
Thermostat Repair
We recommend repair when your existing thermostat is malfunctioning, but not at the end of its useful life. Common issues we see include batteries that need replacement on battery-powered units, loose or corroded wiring connections, miscalibrated temperature sensors, dead or unresponsive screens, and Wi-Fi connectivity issues on smart thermostats.
In many cases, what looks like a thermostat problem is actually a wiring issue, a tripped breaker, or a fault in the HVAC system itself, and a quick diagnostic visit will confirm exactly what is going on.
Our thermostat repair includes:
- Full diagnostic to identify whether the issue is the thermostat or the system
- Inspection of wiring connections at the thermostat and the HVAC unit
- Testing of the thermostat’s sensors and calibration
- Battery replacement on battery-powered models
- C-wire troubleshooting and Wi-Fi diagnostics on smart units
- Recalibration and software updates where needed
- Confirmation that the system runs properly across all modes
If the repair will cost more than half the price of a new thermostat, we will tell you that and recommend replacement instead.
Why Greenville Homeowners Choose Air Today Heating & Cooling
Flexible Financing
We offer flexible financing options on BOTH installation AND repairs! Get the comfort you need today without the stress of upfront payments!
Expert HVAC Technicians
Our HVAC technicians are fully licensed and undergo background checks and drug testing before they enter your home. We hire people we'd trust in our own homes and hold them to that standard on every job.
Local Family Owned Company
Air Today is owned and operated by the Taylor family, and we've been serving Greenville for over 45 years. When you call us, you're not getting a random contractor from a call center. You're getting a team that has built its reputation in this community and intends to keep it.
100% Satisfaction Guaranteed
We stand behind every installation. If something isn't right, we'll fix it. If we can't fix it, you get your money back. Call us for details on how the guarantee works.
Honest & Up-Front Pricing
We'll give you the full cost before any work begins, and that number won't change once we start. No hidden fees, no overage charges, no surprises when you get the bill.
Local Family Owned Company
As a local family business, every service call is personal to us. The Taylor family brings three generations of HVAC expertise directly to your door, ensuring quality work backed by our reputation and family name.
Testimonials and Customer Reviews
Frequently Asked Questions
Most thermostat installations fall between $200 and $500, depending on the type of thermostat and whether your system needs additional wiring. A basic programmable thermostat installed on existing wiring sits at the lower end, while a smart thermostat that requires C-wire installation or a power adapter runs higher. Premium smart units with extras like remote sensors and zoning can run $500 to $1,000. We will give you an exact quote before any work starts.
Most thermostat installations take 30 minutes to two hours from start to finish. A basic programmable thermostat swap on existing wiring takes about 30 to 45 minutes. A smart thermostat install runs closer to one to two hours because of the wiring inspection, C-wire work if needed, Wi-Fi setup, and app pairing. If your home needs new wiring run from the HVAC unit to the thermostat location, expect to add another hour or two.
Most smart thermostats need a C-wire (common wire) to provide constant power to the unit, which is what keeps the screen lit and the Wi-Fi connection stable. Older homes often do not have a C-wire because traditional thermostats did not need one. If your wiring does not include a C-wire, we can either run a new wire from your HVAC unit or install a power adapter that works with your existing setup.
Most smart thermostats work with standard heating and cooling systems, but compatibility depends on the type of system you have, the voltage, and whether you have a C-wire. Multi-stage systems, heat pumps with auxiliary heat, and older equipment sometimes need specific thermostat models or additional components. We check compatibility before we install anything, so you do not end up with a unit that does not work with your equipment.
Yes, in most cases. ENERGY STAR estimates a properly installed and programmed smart thermostat can save up to 15% on heating and cooling costs, which works out to roughly $50 to $250 a year for the average home. The savings come from automatic scheduling, occupancy detection, and learning algorithms that reduce runtime when no one is home. Most smart thermostats pay for themselves within two to three years through lower energy bills.
Most thermostats last 10 to 15 years before they start showing their age. Smart thermostats often have a shorter useful life because the software, app, and connectivity standards evolve faster than the hardware. If your thermostat is over 10 years old and you are noticing inaccurate readings, a screen that fades or freezes, or a system that short-cycles, it is worth having it inspected. Replacement is often cheaper than repair on units this old.
Schedule Your Thermostat Installation Today
Air Today has been keeping Greenville homes comfortable for over 45 years. Whether you are upgrading to a smart thermostat, replacing a unit that has stopped working, or installing a thermostat in a new home, call us at (864) 295-0905 or book online and we will get you scheduled.