GulfServiceProsGulfServicePros
Get listed
Skip to results

Heating & Furnace Repair in Marrero, Louisiana

Found 18 local pros· Pricing updated Jul 2026

Compare heating & furnace repair contractors serving Marrero and Jefferson Parish. Read ratings, confirm Louisiana licenses, and contact pros directly — free for homeowners.

Show closest pros first

Enter your ZIP to sort by distance.

Sorted by distance from Marrero. Enter your ZIP above to sort by your exact location.

18 pros

Explore more

All home services in Marrero · Heating & Furnace Repair across Louisiana

Before hiring a heating & furnace repair contractor in Marrero

  • Verify the contractor's license with our free license lookup tool (checks the state board's records).
  • Confirm insurance is current. Ask for a Certificate of Insurance (COI).
  • Regional utilities include Electric: Entergy Louisiana, DEMCO, Cleco; Gas: CenterPoint Energy, Atmos Energy.
  • Get the full scope in writing before work begins (what's included vs. add-ons).
  • Ask about response time and workload during subtropical humid seasons.
  • Compare at least 2 quotes for larger jobs.
  • Not sure what license or insurance a heating & furnace repair pro actually needs in Louisiana? Read our HVAC licensing & insurance guide.

About heating & furnace repair in Marrero

Marrero's housing stock is mostly postwar subdivision — slab ranches and split-levels built between the 1960s and 1980s — and a large share of it heats with a heat pump and an air handler sitting in an unconditioned attic. That combination behaves differently in winter than a gas furnace, and it fails differently too. The companies below serve Marrero; ratings are shown, and contractors that complete our verification process carry a Verified badge.

What heating repair costs in Marrero

Repair Typical cost Time
Diagnostic visit $85–$150 ~1 hour
Thermostat or control board $150–$500 1–2 hours
Defrost board / sensor (heat pump) $250–$550 1–2 hours
Blower motor $400–$700 2–3 hours
Auxiliary heat strip $300–$650 2 hours
Reversing valve $600–$1,200 half day

Local estimates — insist on a written quote after diagnosis.

What goes wrong in Marrero subdivisions

  • Attic air handlers — the equipment lives in the hottest, dampest part of the house. Condensate pans rust through, and the first sign is often a ceiling stain, not a heating complaint.
  • Ductwork in unconditioned attics — 1970s and 80s flex duct sags, separates at the boots, and loses a meaningful share of the heat before it reaches the room. If some rooms never warm up, the ducts are the first suspect, not the equipment.
  • Defrost cycle faults — a heat pump that ices over outside and never clears has a defrost board or sensor problem. Left alone it will eventually take the compressor with it.
  • Strip heat running constantly — cheap to ignore, expensive to pay for. A January bill jump is the tell.

Repair or replace, on the West Bank

The working rule: if the system is past 12 years and the repair is more than a third of replacement cost, replace. Gulf Coast equipment ages faster than the national average because the cooling season is so long — a 12-year-old Marrero heat pump has run the hours of a much older unit somewhere cooler. An honest tech will give you both numbers and let you choose. If replacement is where you land, see HVAC installation in Marrero; if the system also handles cooling, AC repair in Marrero covers the other half of the year.

Before booking, confirm the company holds a current Louisiana mechanical license — you can check it in about a minute with our contractor license lookup, and this guide explains what the classifications mean.

Common questions about heating & furnace repair in Marrero

How much does heating repair cost in Marrero?
Most Marrero heating repairs run $150–$700 depending on the part, with thermostats and sensors at the low end and blower motors at the high end. Heat pump reversing valves are the expensive outlier at $600–$1,200. Diagnostic visits typically cost $85–$150 and many companies credit that toward the repair.
Why does my heat pump freeze up outside in winter?
Some frost on the outdoor coil is normal in cold, damp weather — the unit should run a defrost cycle and clear it automatically. If it stays iced over, the defrost board, sensor, or refrigerant charge is at fault. Running it that way risks the compressor, which is the most expensive part of the system.
Why are some rooms in my house always cold?
In Marrero's 1970s and 80s subdivisions the usual cause is ductwork, not the furnace. Flex duct in unconditioned attics sags, separates at the register boots, and loses heat before it arrives. A technician should check static pressure and inspect the duct runs before anyone recommends new equipment.
Should I repair or replace my heating system?
The local rule of thumb is that if the system is over 12 years old and the repair exceeds about a third of replacement cost, replacement is the better value. Gulf Coast systems accumulate run-time faster than the national average because of the long cooling season, so age alone understates the wear.
What is auxiliary or emergency heat costing me?
Auxiliary strip heat is straight electric resistance heat and it's several times more expensive to run than the heat pump itself. It's supposed to engage briefly on the coldest mornings. If it's running routinely, the heat pump has a fault worth diagnosing — the repair usually pays for itself in a winter.
Do I need a permit for heating work in Jefferson Parish?
Jefferson Parish requires permits for HVAC work beyond minor repair, including equipment replacement. A licensed contractor pulls the permit as part of the job. If a company suggests skipping the permit to save money, that's a reason to call someone else.

Nearby service areas

About Marrero

Marrero is an unincorporated West Bank community in Jefferson Parish, immediately west of Harvey and stretching toward the parish line. The area is largely residential with extensive postwar subdivision development through the 1960s-80s, producing a housing stock dominated by slab-on-grade ranches and split-levels. Marrero's elevation profile, drainage dependence on parish pump stations, and proximity to industrial canals along the Mississippi all contribute to homeowner service patterns: heavy demand for HVAC system replacement at the 15-20 year mark, ongoing sewer and drain work in older subdivisions, and rising interest in indoor air quality services in homes near commercial corridors. Jefferson Parish requires permits for HVAC, plumbing, and electrical work above minor repair scope. Lake-adjacent humidity puts continuous strain on outdoor condenser units and crawlspace-adjacent ductwork. GulfServicePros lists established Marrero-area companies with ratings shown, so you can compare pros with a service history among West Bank Jefferson Parish homeowners and check their licensing yourself. Contractors that complete our verification process carry a Verified badge.