Thermostat Installation
THERMOSTAT INSTALLATION IN NORTH LOUISIANA
Smart or programmable, we install it right — wiring, C-wire, compatibility, and full setup — so your thermostat actually controls comfort and trims the bill. Flat-rate quote before we start.
4.9 · 4,400+ reviews
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4.9★ on Google
4,400+ reviews
24/7 Emergency
60–90 min dispatch
Licensed & insured
LA Master Plumber #1874
North Louisiana
Ruston to Shreveport
Flat-rate pricing
Quoted before we start
Overview
A thermostat that finally works the way it should
The thermostat is the one part of your HVAC system you actually touch — and the wrong one, or one wired badly, quietly costs you comfort and money every day. Mark Johnson & Sons installs and sets up smart and programmable thermostats across North Louisiana, from a simple like-for-like swap to a full smart upgrade with a new C-wire and app setup.
The tech who shows up is on our payroll — no subcontractors — and every quote is flat-rate, given before we start. We confirm the new thermostat is compatible with your exact furnace, heat pump, or AC before we install it, run the common wire if the unit needs one, and don't leave until it's mounted level, talking to your system, and set up the way you want it. The service call is waived when you have us do the install.
What we install
- Smart thermostats — Nest, ecobee, Honeywell, and Emerson Sensi, paired to your wifi and phone
- Programmable thermostats — 7-day and 5-1-1 schedules for simple, reliable savings
- Heat-pump and multi-stage models — correct staging so auxiliary heat only runs when it should
- Multi-zone controls — a thermostat per zone with damper coordination for room-to-room comfort
Why the install matters more than the box
A smart thermostat left on a bad schedule, or wired without a C-wire, doesn't save a dime — it just drops offline and frustrates you. Many older North Louisiana homes were wired before smart thermostats existed and have no common wire at the wall. We check for it first, run one if it's missing, verify heat-pump staging so your emergency strips aren't running all winter, and build the schedule around how your household actually lives. Placement matters too: a thermostat mounted over a supply vent, in direct sun, or on an exterior wall reads the wrong temperature and runs your system against a number that isn't real. If yours is in a bad spot, we'll tell you and relocate it to a wall that senses the room honestly.
Buy your own or let us match one
Bought your own smart thermostat? Great — we'll install and configure it. Want a recommendation? We'll match it to your equipment and how you use the house, so you get the comfort and the savings without the guesswork.
Ask about our Classic Membership — pairing a thermostat upgrade with a seasonal tune-up gets you the member's 15% off and priority scheduling, an easy way to knock it out on one visit.
Free quote
Flat-rate thermostat quote
Tell us your system — furnace, heat pump, or AC — and the thermostat you have in mind. We'll confirm compatibility and give you a real number before we start.
4.9★
24/7
Emergency
Free
Quote
Current coupons
View all$89 OFF
Waived diagnostic with any thermostat install
Service call credited back when you approve the install.
Expires 12/31/2026
15% OFF
Install with Classic Membership
Membership is $189/year. Discount applies to HVAC & plumbing work.
Expires 12/31/2026
FREE C-WIRE
Common-wire add with a smart thermostat install
With qualifying smart thermostat install. Must mention at booking.
Expires 12/31/2026
Mention coupon when booking. One offer per household.
Warning signs
Signs It's Time for a New Thermostat
A thermostat doesn't have to be broken to be costing you. Any of these is a good reason to upgrade.
The temperature reading never matches how the room actually feels
The system short-cycles or won't hold a steady temperature
You have an old manual or dial thermostat with no scheduling
A smart thermostat you bought won't power on or keeps losing its wifi
Blank screen or dead display, even after new batteries
You can't control comfort room-to-room or from your phone
Auxiliary or emergency heat kicks on when it shouldn't (heat pump)
You just want lower bills without babysitting the thermostat all day
Comfort & savings
The smallest upgrade with the biggest daily payoff.
A smart thermostat installed and set up correctly learns your schedule, backs off when you're out, and keeps the humid summers and cool snaps in check — comfort you feel and savings you see on the bill.
Typical bill savings
10%+
Across Ruston, Monroe, Shreveport, Bossier City, and North Louisiana.
The Process
How a Thermostat Install Goes
On the truck
Professional tools, parts, and diagnostics — every call.
Compatibility check
We confirm the thermostat you want works with your exact furnace, heat pump, or AC — and whether it needs a C-wire — before anything comes off the wall.
Flat-rate quote
You get one price covering the install, any C-wire run, and full setup. If a wiring add is needed, you see it before we start — no surprises.
Wiring & mounting
We safely disconnect the old unit, run or add the common wire if the thermostat needs steady power, and mount the new one level on the wall.
Setup & app pairing
We connect it to your system, pair a smart unit to your wifi and phone app, build your schedule, and set the modes and temperatures the way your household lives.
Test & walkthrough
We run heat and cool to confirm it's controlling the system correctly, then show you how to use the schedule, app, and away features before we go.
Pricing
Thermostat Installation Cost in North Louisiana
Flat-rate, quoted before we start. Classic Membership members get 15% off. Price depends on the thermostat and whether your system needs a C-wire.
Service call / diagnostic
Waived when you have us do the install
Standard
$89–$129
Member · save 15%
$76–$110
Programmable thermostat install
Standard like-for-like replacement
Standard
$150–$275
Member · save 15%
$128–$234
Smart thermostat install & setup
Mounting, wifi and app pairing, schedule setup
Standard
$250–$600
Member · save 15%
$213–$510
C-wire / common wire add
When a smart thermostat needs steady power
Standard
$125–$275
Member · save 15%
$106–$234
Heat-pump / multi-stage thermostat setup
Correct staging so aux heat runs only when needed
Standard
$200–$450
Member · save 15%
$170–$383
Thermostat relocation
Move to a better-sensing wall location
Standard
$175–$350
Member · save 15%
$149–$298
Multi-zone thermostat setup
Two or more zones controlled independently
Standard
$350–$750
Member · save 15%
$298–$638
Thermostat wiring diagnosis & repair
Tracing a shorted, mislabeled, or damaged thermostat wire
Standard
$125–$350
Member · save 15%
$106–$298
After-hours / emergency service
Added to the job; +$175 and up nights, weekends, holidays
Standard
$175–$175
Member · save 15%
$149–$149
Member pricing reflects the Classic Membership 15% repair discount. Service call fees are separate.
Ranges reflect 2026 North Louisiana residential work. Thermostat hardware, if we supply it, is quoted separately from the install labor.
Classic Membership
One plan. Whole-home peace of mind.
For $189 a year, members get 15% off every HVAC and plumbing repair, two complete HVAC tune-ups, a free plumbing and drain check-up, and priority scheduling on every call.
- 15% off repairs
- Priority scheduling
- 2 HVAC tune-ups/yr
- After-hours discounts
- $25 savings certificate
- Guaranteed flat-rate
Classic Membership
$189/year
One flat yearly price covers your whole home — everything listed, no per-visit fees, no surprises.
Questions? (318) 319-0220
Cancel anytime · 1-yr min
Compare
Standard vs. Programmable vs. Smart Thermostat
Three levels of thermostat, three levels of savings and control. The right one depends on how hands-on you want to be and how much you want off the bill.
| Feature | Standard (manual) | Programmable | Smart (wifi) |
|---|---|---|---|
| Installed cost | $150 – $200 | $150 – $275 | $250 – $600 |
| Scheduling | None — set by hand | 7-day / 5-1-1 schedule | Learns your routine, auto-adjusts |
| Phone / app control | No | No | Yes — control from anywhere |
| Typical bill savings | Baseline | Modest with a good schedule | Around 10% when set up right |
| Needs a C-wire | No | Usually not | Yes (we add one if missing) |
| Best for | Rentals, simple set-and-forget | Steady routines, budget upgrade | Lower bills, remote control, LA humidity |
FAQ
Thermostat Installation FAQs
Yes. Bring your Nest, ecobee, Honeywell, or any other smart thermostat and we'll confirm it's compatible with your system, install it, run a C-wire if it needs one, and set up the app and schedule. If it turns out it won't work with your equipment, we'll tell you before we start and suggest one that will.
Related services
Related Heating Services
Often booked alongside a thermostat upgrade.
Furnace Repair
No-heat calls, short cycling, ignition and blower faults — diagnosed and fixed fast.
Furnace & Heating Maintenance
Complete seasonal tune-up — safety checks, cleaning, and inspection.
Heat Pump Service
Repair, replacement, and tune-ups for year-round comfort in mild winters.
Available Around the Clock
Emergency?
We answer 24/7.
Burst pipe, water heater out, sewer backup? Real plumbers pick up — no answering machines. Mark Johnson & Sons Plumbing serves North Louisiana any time, day or night.
LA Master Plumbing #1874 · Backflow Cert #28131 · Master Natural Gas Fitter #LMNGF9062 · State Contractors #35794