Plumbers and heating and cooling contractors in Louisiana

44 plumbers and heating and cooling contractors are listed in Louisiana. 23 hold an active USDOT registration. They're listed below by county.

Louisiana licenses master, journeyman and residential plumbers through its State Plumbing Board.^{1, 2, 3} Heating and cooling jobs of $10,000 or more in Louisiana need a Mechanical license from the State Licensing Board for Contractors.⁴ Your local building department in Louisiana can tell you whether replacing a water heater, furnace or AC needs a permit.

Contractors by county

44 contractors in 23 counties.

Ascension Parish 1 contractor

Swat Cooling Tower Resources

Bossier Parish 2 contractors

Boyer's Mechanical Service, Inc, SBC Mechanical LLC

Caddo Parish 4 contractors

Mechanical Concepts, L.L.C., Roach Plumbing Co Inc, Storer Services, Ltd., The Payne Company

Calcasieu Parish 1 contractor

Cajun A/C & Heating LLC

Caldwell Parish 1 contractor

Cody Daniels

East Baton Rouge Parish 5 contractors

DD Mechanical LLC, Delta Mechanical, Enfra Solutions, LLC, Mayeux Plumbing Co Inc, Performance Contractors Inc

Jefferson Parish 7 contractors

Cis Industries LLC, Earl's Plumbing and Heating LLC, Enfra MCC, LLC, Gootee Construction, Inc., Hardcore Mechanical A/C & Heating, LLC, Pontchartrain Mechanical Company Inc, Regional Mechanical Services LLC

Lafayette Parish 2 contractors

Kaizen Mechanical Services LLC, Mouton Plumbing & Hauling Inc

Lincoln Parish 2 contractors

AGH Plumbing, LLC, Johnson's Precast Septic Service

Livingston Parish 1 contractor

A & G Plumbing Company

Orleans Parish 2 contractors

Gallo Mechanical LLC, STI Air Conditioning LLC

Ouachita Parish 4 contractors

Byrnes Mechanical Contractors Inc, Mechanical Systems & Services, LLC, River City Sheet Metal, Inc., Scott Ledoux Heating & Air Conditioning Inc

Rapides Parish 2 contractors

Atchley Heating & Cooling LLC, Poston Plumbing LLC

Richland Parish 1 contractor

Clack Plumbing, LLC

St. Bernard Parish 1 contractor

Longo's Mechanical Contractors LLC

St. Charles Parish 1 contractor

Pedal Valves, Inc.

St. Landry Parish 1 contractor

Wolf Air LLC

St. Tammany Parish 1 contractor

Everett Heating and Cooling LLC

Tangipahoa Parish 1 contractor

Blanchard Mechanical Contractors Inc

Terrebonne Parish 1 contractor

Sealand Mechanical LLC

Union Parish 1 contractor

Innovative Mechanical Services Inc

Vermilion Parish 1 contractor

Duck Capital Plumbing & AC LLC

West Baton Rouge Parish 1 contractor

Mechanical Insulations Inc

Plumbing and HVAC rules in Louisiana

Plumbing license: State license.^{1, 2, 3}
Heating and cooling license: State license.⁴
State codes: Louisiana's State Uniform Construction Code includes the 2021 International Plumbing Code with amendments.⁵ The same code includes the 2021 International Mechanical Code.⁶
Replacement permits: Ask your local building department whether replacing a water heater, furnace or AC needs a permit where you live.

Plumbing and HVAC rules in Louisiana

What plumbing and HVAC work costs in Louisiana

These are published national ranges, not quotes. Local quotes vary.

A plumber's hourly rate: $45 to $200 an hour; most charge $70 to $150 (HomeAdvisor, Fixr, HomeGuide)
A plumber's service call: $50 to $300 a visit, which often covers the first hour (HomeAdvisor, Fixr, HomeGuide)
After-hours or emergency call: about $100 to $300 added to the call, or about $150 to $350 an hour (HomeAdvisor, Fixr, HomeGuide)
Burst or leaking pipe repair: $200 to $3,000; the guides' averages run $500 to $1,200 (HomeAdvisor, Fixr, HomeGuide)
Clearing a sink, tub or toilet drain: $100 to $275 (HomeAdvisor, Fixr, HomeGuide)
Clearing the main line: $175 to $800; typically $350 to $650 (HomeAdvisor, Fixr, HomeGuide)
Hydro jetting: $350 to $1,400, depending on the line and the blockage (HomeAdvisor, Fixr, HomeGuide)
Gas tank water heater: $700 to $2,700 installed; about $1,900 on average (HomeAdvisor, Fixr, HomeGuide)
Tankless water heater: $1,600 to $5,600 installed for gas, depending on gas line and venting work (HomeAdvisor, Fixr, HomeGuide)$850 to $3,000 installed for electric, before any panel upgrade ($850 to $1,700) (Fixr, HomeGuide)
Heat pump water heater: $2,000 to $4,600 installed in place of an electric tank; more when it replaces gas (HomeAdvisor, Fixr, HomeGuide)
Sewer camera inspection: $125 to $500 (HomeAdvisor, Fixr, HomeGuide)
Sewer line replacement: about $1,400 to $5,300 for a typical line (HomeAdvisor, HomeGuide)$50 to $250 a linear foot (HomeAdvisor, HomeGuide)
Replacing central AC on existing ducts: $3,900 to $8,000; about $6,000 on average (HomeAdvisor, Fixr, Forbes Home)
Swapping a heat pump on existing ducts: $4,000 to $8,000; a 3-ton system about $3,900 to $6,200 (HomeAdvisor, Forbes Home, HomeGuide)
A whole-home heat pump system: commonly $14,000 or more (NYSERDA, Massachusetts EEAC, Fixr, HomeGuide)
Replacing a gas furnace: $3,800 to $6,200 at standard efficiency (HomeGuide, HomeAdvisor, Fixr, Forbes Home)$5,200 to $12,000 at high efficiency (90% AFUE and up) (HomeGuide, HomeAdvisor, Fixr, Forbes Home)
Replacing an electric furnace: $1,600 to $8,000, with a like-for-like swap at the low end (Fixr, HomeAdvisor)
A single-zone mini-split: $2,000 to $5,000 (HomeGuide, Fixr, Forbes Home)
A multi-zone mini-split: $3,000 to $14,000 for 2 to 4 zones (HomeGuide, Fixr, Forbes Home)
An HVAC tune-up: $70 to $350 a visit; a basic tune-up is often about $100 to $200 (HomeGuide, HomeAdvisor, Fixr)
An HVAC maintenance plan: $120 to $500 a year (HomeGuide, Fixr)

Ranges from HomeAdvisor, HomeGuide, Fixr, Forbes Home, NYSERDA and the Massachusetts EEAC, checked September 2026.

What plumbing and HVAC work costs in Louisiana

Contractors by county

Plumbing and HVAC rules in Louisiana

What plumbing and HVAC work costs in Louisiana

Sources