The independent heating and cooling company across Kentucky and the Ohio Valley
Thermostat Installation — Book a Visit Today
We install and replace thermostats, wire smart controls, and set up zoning across Illinois, Indiana, Kentucky, Ohio, Tennessee and West Virginia. Most calls start the same way: a blank screen, a thermostat that reads eight degrees off the room, or a new smart model that will not run the heat because the old two-wire setup has no common wire. A visit begins with confirming the thermostat is the actual problem and not a control board, transformer or safety switch. Then we check what your furnace, heat pump or air handler needs, run a common wire if the wall allows it, mount the new control level, and stay to watch a full heating and cooling cycle. Call us and tell us what your thermostat is doing, or send a photo of the wires.
Call (888) 414-3292- A real person answers
- Open 7 days
- Written quote before work starts
Taking calls until 5:00 PM ET
The thermostat installation symptoms we hear most
- The screen is completely blank Dead batteries, blown low-voltage fuse, tripped float switch or failed transformer
- It says 72 but the room feels like 80 Failed temperature sensor, thermostat mounted on a hot wall or in direct sun
- My new smart thermostat runs the fan but no heat Missing common wire or incompatible wiring for a heat pump or two-stage system
- The upstairs never matches the downstairs One thermostat controlling a two-level home, a candidate for zoning controls
- The system short cycles on and off every few minutes Bad thermostat differential, loose wire at the terminal, or poor mounting location
Search for it as thermostat installation or thermostat replacement and you land in the same place: one visit, one written quote.
Safe things to check first
Worth a look before you call — sometimes it saves you the visit.
- 1Change the thermostat batteries if it takes them, then see whether the display comes back.
- 2Confirm the mode and setpoint are right: heat with the setpoint above room temperature, cool with it below.
- 3Check the breaker panel for a tripped breaker for the furnace, air handler or outdoor unit and reset it once.
- 4Put in a clean filter and walk the house to be sure supply and return vents are open and not blocked by rugs or furniture.
Guides & troubleshooting
What homeowners get from an independent HVAC company
| Derby City Comfort | Big-box repair chains | Handyman listings | |
|---|---|---|---|
| Written quote before any work | ✓ | ✕ | ✕ |
| Live answer seven days a week | ✓ | ✕ | ✓ |
| All major brands, gas and electric | ✓ | ✓ | ✕ |
| Independent company, nobody's quota | ✓ | ✕ | ✓ |
| Local techs who know the housing stock | ✓ | ✕ | ✓ |
What every visit includes
You approve a written quote first
Covering 171 cities across Illinois, Indiana, Kentucky and 3 more.A real person answers
Open 7 days, 8:00 AM to 5:00 PM ET.Independent of every manufacturer
Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.Thermostat Installation — quick answers
Will a smart thermostat work with my existing system?
Usually, though it depends on your wiring and equipment. Heat pumps, two-stage furnaces and older two-wire hookups need attention. We check the terminals at the furnace and the thermostat before we commit to a model, so nothing gets installed that cannot run your system.
What is a common wire and why does it matter?
The common wire, or C wire, gives a smart thermostat steady power instead of borrowing it from the heating circuit. Without it, screens go dark and systems cycle oddly. We can often pull a new wire, or add an adapter at the control board when the wall will not cooperate.
Can I just move the thermostat to a better wall?
Often yes. A thermostat above a supply vent, in a sunny hallway, or on an exterior wall will read wrong and run your system wrong. We look at wire routing and framing, then quote relocation as part of the install when it makes sense.
How long does a thermostat replacement take?
A straightforward swap on compatible wiring is typically under an hour, including a full heating and cooling cycle test. Adding a common wire, relocating the control, or setting up zoning takes longer. We tell you which one you are looking at before we start.
What does zoning actually change?
Zoning adds dampers in the ductwork and a thermostat for each area, so the upstairs and downstairs stop fighting each other. It works best when the duct layout can support it. We survey the trunk lines and returns first and tell you honestly if it will help.
My thermostat is fine but the house is cold. Now what?
Then the thermostat is not the problem, and a new one will not fix it. Blank displays and no-heat calls often trace back to a control board, a safety switch, a clogged filter or a refrigerant issue. We diagnose the system, not just the wall control.
How it works
- Step 1
Tell us the symptom
Call or fill in the quote form. We ask what changed, when it started, and what the thermostat reads. That short conversation tells us whether you need a visit today or tomorrow morning.
- Step 2
We diagnose on site
A technician checks the thermostat, the electrical side, airflow through the filter and ducts, and the equipment itself. We find the actual cause instead of swapping parts and hoping the noise goes away.
- Step 3
You decide before we work
We explain what failed, what the repair involves, and what we would do if it were our own house. Nothing gets replaced until you say go. Then we test the system before leaving.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- Old houses and new onesWe are used to century-old homes with retrofitted ductwork and 1970s subdivisions with original returns. Tight crawl spaces, low basement headroom and odd attic runs are normal parts of the day for us, not surprises that stall the job.
- Built for the swingsHumid summers push AC systems hard and January freezes expose weak igniters and cracked flues. We repair for both extremes across the region, so the fix holds when the weather turns instead of failing the first hard week.
- Air conditioning and heating bothAir conditioner repair in July, heating repair in January, and the IAQ and airflow problems that hide in between. One crew that knows how your cooling and heating share the same blower and the same duct system.
- Plain talk, no pressureWe tell you when a repair makes sense and when replacement is the honest answer. No scare tactics about your BTU load, no upsell scripts. You get the condition of the system and a clear next step.
- All major brands, gas & electricEvery major HVAC brand, gas and electric, handled by an independent crew.
- Straight answersIf a system is not worth repairing, we say so, often right on the phone.
Thermostat Installation
Small faults become big ones on a schedule of their own
Describe the symptoms and we'll book the visit — takes about a minute.
- A real person answers
- Open 7 days
- Written quotes
- All major brands
- Gas & electric
Rather not call? Get a free quote →