Heating
NORTH LOUISIANA HEATING & FURNACE SERVICES
Furnace repair, installation, heat pumps, and seasonal tune-ups — done right by the licensed team North Louisiana already trusts. Flat-rate pricing, answered live 24/7.
4.9 · 4,400+ reviews
Verified Google reviews
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
Every Heating Job, One Local Crew
When the temperature drops and the heat won't come on, you want the same honest, licensed crew you already trust for plumbing. Mark Johnson & Sons has kept North Louisiana homes warm since 1997 — gas and electric furnace repair, new system installation, heat pumps, boilers, ductwork, thermostats, and seasonal tune-ups, all under one roof.
No subcontractors. The tech who shows up is on our payroll and accountable to the job. Every quote is flat-rate and given before we touch a tool, so you know the price before we start — and the $89–$129 service call is waived when you have us do the repair.
What we service
- Furnace repair — gas and electric, no-heat and short-cycling calls, flame sensors, hot-surface igniters, blower motors and capacitors, inducer motors, gas valves, and control boards
- Furnace installation — right-sized 80% AFUE and 95%+ high-efficiency furnaces, load-calculated and code-compliant, from Carrier, Trane, Lennox, Goodman, Rheem, York, American Standard, Bryant, and Amana
- Heat pumps — repair, replacement, and dual-fuel setups that pair a heat pump with gas backup for North Louisiana's mild-but-unpredictable winters
- Boilers — hydronic repair, circulator and pressure diagnostics, and full replacement
- Ductwork — sealing, repair, and replacement to kill cold rooms and cut bills in older homes with aging ducts
- Thermostats and radiant heat — smart and programmable thermostat installs, plus in-floor radiant systems
Repair vs. replace
If the furnace is under 12 years old and the repair is less than a third of replacement cost, we fix it. Past 15 years, on repeat breakdowns, or with a cracked heat exchanger, replacement is usually the smarter money. You get the honest math and a flat-rate quote on both — no pressure, no scare tactics.
Emergency heat and commercial
A sudden hard freeze is exactly when furnaces quit, so we answer live 24/7 and dispatch fast on no-heat emergencies. We also handle light-commercial rooftop and packaged units on scheduled and emergency contracts. Ask about our Classic Membership — a Fall heating tune-up and Spring AC tune-up for $189/year, plus 15% off repairs and front-of-line scheduling.
Since 1997
Your local crew
- 4.9★
- Google rating
- 4,400+
- 5-star reviews
- 30
- Years serving N. LA
Warning signs
Signs Your Heating Needs Service
Heating problems almost always warn you first. Catch these early and you avoid a no-heat morning in the middle of a North Louisiana cold snap.
Furnace runs but the house never reaches the thermostat setting
Short cycling — the system kicks on and off every few minutes
Cold spots in some rooms while others stay warm
Burning, musty, or gas smell when the heat runs
Yellow or flickering burner flame instead of steady blue
Banging, rattling, or squealing from the furnace or blower
A spike in the gas or electric bill without a weather change
The blower runs constantly but the air isn't warm
System is 15+ years old and needs repairs every season
Browse services
Every heating service we handle
Repair, install, and maintenance for furnaces, heat pumps, and boilers. Tap any card for pricing, process, and FAQs.
11 services · tap any for full details
Furnace Repair
No-heat calls, short cycling, ignition and blower faults — gas and electric furnaces, diagnosed and fixed fast.
Furnace Installation
Right-sized furnace replacement and new installs, load-calculated and code-compliant, with honest flat-rate quotes.
Furnace & Heating Maintenance
Complete seasonal tune-up — safety checks, cleaning, and inspection to head off winter breakdowns.
Heat Pump Service
Heat-pump repair, replacement, and seasonal tune-ups for year-round comfort in North Louisiana's mild winters.
Boiler Service
Boiler repair, maintenance, and replacement — pressure, circulator, and safety-control diagnostics.
Ductwork Repair & Sealing
Leaky, crushed, or undersized ducts fixed and sealed — even airflow, lower bills, fewer cold rooms.
Thermostat Installation
Smart and programmable thermostat setup — better comfort control and lower heating bills.
Radiant Heating
In-floor and radiant heating service and installation for warm, even, draft-free comfort.
Furnace Filter Replacement
Filter swaps and coordination — protect your system, clean your air, keep airflow strong.
Commercial HVAC
Rooftop units, packaged systems, and light-commercial heating — scheduled and emergency service.
24/7 Emergency Heating
No heat on the coldest night? Licensed tech dispatched fast, any hour, any day.
The Process
How a Heating Service Call Goes
On the truck
Professional tools, parts, and diagnostics — every call.
Call answered live, 24/7
No heat in a cold snap is an emergency to us. A real person answers, triages the symptom, and dispatches — day or night.
Full system diagnosis
Your tech checks the burners, heat exchanger, igniter, gas pressure, blower, and thermostat, then shows you the actual fault before quoting.
Flat-rate quote, safety first
You get the price up front. If we find a cracked heat exchanger or a carbon-monoxide risk, we tell you straight — and never upsell a repair you don't need.
Repair or install, done clean
Common parts ride on the truck for same-day repairs. New system installs are sized with a load calculation, not a guess.
Tested, permitted, warrantied
We verify safe operation, pull permits where required, register the manufacturer warranty, and back our labor in writing.
Pricing
Heating Repair & Install Costs in North Louisiana
Flat-rate, quoted before we start. Emergency after-hours adds $95–$150. Here's where the most common heating jobs land.
Heating diagnostic / service call
Waived when you have us do the repair
Standard
$89–$129
Member · save 15%
$76–$110
Igniter or flame sensor replacement
Two most common no-heat repairs
Standard
$185–$385
Member · save 15%
$157–$327
Blower motor replacement
Varies by ECM vs. PSC motor
Standard
$450–$950
Member · save 15%
$383–$808
Gas valve replacement
When the valve won't open or hold
Standard
$385–$725
Member · save 15%
$327–$616
Seasonal furnace tune-up
Discounted on our maintenance plan
Standard
$119–$189
Member · save 15%
$101–$161
Gas furnace install
80–96% AFUE, sized by load calc, permit included
Standard
$3,800–$7,500
Member · save 15%
$3,230–$6,375
Heat pump install
Heats and cools in one system
Standard
$5,500–$11,500
Member · save 15%
$4,675–$9,775
Ductwork repair / sealing
Leak sealing to partial replacement
Standard
$350–$2,500
Member · save 15%
$298–$2,125
Member pricing reflects the Classic Membership 15% repair discount. Service call fees are separate.
Ranges reflect 2026 North Louisiana residential work. Boilers, geothermal, and commercial units are quoted separately.
Compare
Furnace vs. Heat Pump for North Louisiana
In our mild winters both make sense — the right pick depends on your fuel, your existing system, and whether you want one unit to heat and cool.
| Feature | Gas Furnace | Heat Pump | Dual Fuel |
|---|---|---|---|
| How it heats | Burns natural gas or propane | Moves heat with electricity | Heat pump with gas backup |
| Best for | Homes with existing gas | All-electric homes, mild winters | Max efficiency in any weather |
| Install cost | $3,800 – $7,500 | $5,500 – $11,500 | $8,000 – $14,000 |
| Also cools? | No — needs separate AC | Yes — heats and cools | Yes — heats and cools |
| Best efficiency | Up to 96% AFUE | Very high in mild climates | Highest year-round |
Why Mark Johnson & Sons
The reasons most North Louisiana homes call us twice.
In-house crews
No subcontractors. Every truck, every tech, every crew is on the Mark Johnson & Sons payroll — the person on-site is the person accountable.
Flat-rate pricing
The number you hear before we start is the number you pay. No hourly meter. No surprise add-ons. If scope changes, we stop and ask first.
Same-day response
Most calls get a licensed tech on-site the same day. True emergencies — burst pipe, no water, sewage backup — dispatch in 60 to 90 minutes.
Licensed & insured
Louisiana state-licensed plumbing contractor, fully bonded, every tech background-checked. License numbers on every truck.
North Louisiana
Ruston, Monroe, West Monroe, Shreveport, and Bossier City. Local crews who live where they work and know the codes.
Own trucks, own tools
Cable machines, jetters, cameras, leak detectors — all in-house. No handoffs, no waiting on a subcontractor.
24/7 dispatch
No heat on a cold night? We answer live and we come out.
A dead furnace when it's freezing isn't a next-week problem. Emergency heating calls get a licensed tech on-site fast — any hour, any day, across North Louisiana.
Answered live
24/7
Across Ruston, Monroe, Shreveport, Bossier City, and North Louisiana.
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
FAQ
Heating FAQs
Yes. Our techs service every major gas and electric furnace brand — Carrier, Trane, Lennox, Goodman, Rheem, York, American Standard, Bryant, and Amana. We carry common ignition, flame-sensor, and blower parts on the truck so most no-heat calls are fixed in a single visit.
Get In Touch
Request a Quote
Get a free estimate
in minutes.
Tell us what's going on — we'll follow up fast with a same-day appointment or a flat-rate quote.
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