Baton Rouge HVAC Repair: Heating and Air for Baton Rouge Homes
An AC that cannot keep up in July, a musty smell every time the system kicks on, an attic unit dripping through the ceiling, or a furnace that will not light on the first cold morning? Tell us what is going on. Request a free quote and we'll call you back.
- Free, no-obligation quotes
- AC, furnaces, heat pumps, ductwork and humidity
- Baton Rouge, St. George, Central, Denham Springs, Prairieville and nearby
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How it works
- Tell us what is going on. Send the short form: your name, phone, town or ZIP, what you need and anything else worth knowing.
- We'll call you back. Expect a few questions about the problem, the house and your timing. Photos are always helpful.
- Get a free quote. There is no cost to ask and no obligation to go ahead.
Heat plus humidity: the Baton Rouge HVAC problem
Baton Rouge summers are long and sticky. National Weather Service normals for 1991–2020 put the average August high at about 92°F with an average low of about 73°F, and July is nearly identical (National Weather Service New Orleans/Baton Rouge, 1991–2020 Climate Normals). The temperature alone is not extreme by Southern standards. The humidity is what makes it hard: the air conditioner is not just cooling the house, it is pulling gallons of water out of the air every day. Systems that are oversized, short of airflow, or running with dirty coils can hit the thermostat setting and still leave the house damp.
Mold follows moisture
The EPA recommends keeping indoor relative humidity below 60 percent, ideally 30 to 50 percent, to keep mold in check (EPA, A Brief Guide to Mold, Moisture and Your Home). In south Louisiana, condensate drain pans, the indoor coil, duct insulation in hot attics and the closets on outside walls are where mold shows up first. A musty smell when the system starts is a sign worth taking seriously.
Attics, ducts and condensate
Most Baton Rouge homes are on slabs or raised a few feet, with the air handler or furnace in the attic or a hall closet and flexible ducts snaking through attic space that can reach well over 120°F on a summer afternoon. Leaky ducts there waste cooling and pull in hot, humid air. And the condensate the system removes has to drain somewhere: a clogged line from an attic unit is one of the most common reasons for a stained or collapsed ceiling.
Floods and storms
The August 2016 flood put thousands of homes across the region under water when the Amite and Comite rivers hit record levels (2016 Louisiana floods), and hurricanes from Gustav in 2008 to Ida in 2021 left much of the area without power for days (Hurricane Gustav). Outdoor units that were submerged, furnaces and air handlers in flooded garages and closets, and ductwork soaked in floodwater all need replacing or careful inspection. Many homes rebuilt after 2016 now have systems close to ten years old.
Winter still counts
Winters are mild most of the time, but freezing nights come every year and occasionally a lot colder; the January 2025 winter storm brought rare snow and hard freezes to south Louisiana. Gas furnaces, heat pumps and electric heat strips all see heavy use for a few weeks, after sitting idle for months.
Heating and air conditioning services in Baton Rouge
Pick the job closest to what you are dealing with. Each page explains what usually goes wrong with heating and cooling systems in south Louisiana, what the fix involves and what to ask before work starts.
AC Repair
No cooling, weak airflow, iced lines, attic units leaking through the ceiling and systems that cannot keep up.
AC Installation & Replacement
Full system replacement, sizing for humidity, SEER2 minimums, new refrigerants and flood-smart installs.
Furnace & Heating Repair
Gas furnaces in attics and closets, electric heat strips and heat pumps that will not heat.
Heat Pumps
Heat pump repair and replacement, dual-fuel systems, defrost and backup heat questions.
Emergency AC Repair
No cooling during a heat advisory, water through the ceiling, burning smells and post-storm problems.
AC Maintenance & Tune-Ups
Spring AC and fall furnace tune-ups, condensate line care, coil cleaning and filters.
Ductwork & Airflow
Leaky and crushed attic ducts, flood-damaged ductwork, hot rooms and sweating registers.
Humidity, Mold & Air Quality
Damp, musty houses, mold around vents, whole-home dehumidifiers, filters and air cleaners.
New equipment rules worth knowing
Since January 1, 2023, new central air conditioners installed in Southern states, including Louisiana, must meet a higher minimum efficiency than in the North: 14.3 SEER2 for most home-size split systems, and heat pumps 14.3 SEER2 nationwide (U.S. Department of Energy, 2023 Central Air Conditioner and Heat Pump Standards FAQ). Under the EPA's refrigerant transition, new residential split systems manufactured since January 1, 2025 use refrigerants such as R-454B or R-32 instead of R-410A (EPA, Technology Transitions HFC Restrictions by Sector). Existing systems can still be serviced, but these rules shape repair-or-replace decisions.
Gas service changed hands in 2025
If you heat with natural gas inside Baton Rouge, your gas bill now comes from Delta Utilities, which took over Entergy's Baton Rouge gas distribution business on July 1, 2025. Entergy still provides electricity (Entergy, Gas Distribution Business Sale). Other parts of the region are served by other gas and electric utilities, including DEMCO for electricity in parts of the surrounding parishes; your bill shows which one serves you.
What to do while you wait
- AC not cooling? Check that the thermostat is on cool and set below room temperature, replace a dirty filter, and check the breakers for the indoor and outdoor units. If the outdoor unit hums but the fan does not spin, turn the system off.
- Ice on the copper lines? Turn cooling off and run the fan only until it thaws.
- Water coming through the ceiling? Turn the system off and catch the water. The condensate drain is probably clogged.
- Dangerous heat? Older adults, babies and people with health conditions are at higher risk. Move them somewhere cool, and call 911 for signs of heat illness.
- Smell gas? Leave the house, then call 911 and your gas utility from outside. For Delta Utilities customers, the emergency line is 1-833-DELTA-99 (1-833-335-8299) (Delta Utilities).
Questions worth asking before any HVAC work
- What exactly failed, and how was that confirmed?
- For a replacement: was a load calculation done, or is it a size-for-size swap?
- Does the quote list the indoor and outdoor equipment as a rated combination, with the AHRI certificate number and SEER2 rating?
- Will the ducts be inspected and sealed, and is the drain pan and float switch new?
- Is a permit included, and what manufacturer warranty comes with the equipment?
Not sure where to start? The guides cover musty AC smells, what to do with an HVAC system after a flood, and when to service your system before summer.
Service areas
Quote requests are welcome from Baton Rouge and the surrounding parishes. Each page covers what is different about heating and cooling there: the age and style of the homes, flood history, the utilities that serve them, and the problems that come up most often.
Baton Rouge, LA
The capital city: century-old homes near downtown, mid-century ranches, and newer suburbs, all under the same humidity.
Mid City, Baton Rouge
Bungalows and cottages along Government Street, with systems added long after the houses were built.
Garden District, Baton Rouge
Roseland Terrace, Drehr Place and Kleinert Terrace: 1910s–1930s homes under live oaks.
St. George, LA
Louisiana's newest city, southeast of Baton Rouge, mostly 1970s-and-later subdivisions.
Shenandoah, LA
Established subdivisions in St. George, from Shenandoah Estates to White Oak Landing.
Central, LA
A growing city northeast of Baton Rouge along the Comite River, incorporated in 2005.
Zachary, LA
A fast-growing city 16 miles north of Baton Rouge, with many newer homes and two-story layouts.
Baker, LA
An established city just north of Baton Rouge, with mid-century homes and Comite River flood history.
Denham Springs, LA
Livingston Parish's largest city, where most homes took on water in 2016 and many systems are now about ten years old.
Walker, LA
A Livingston Parish city along I-12 with many newer subdivisions and flood-rebuilt homes.
Prairieville, LA
A fast-growing Ascension Parish community between Baton Rouge and Gonzales, with mostly newer homes.
Gonzales, LA
Ascension Parish's "Jambalaya Capital of the World," with older town homes and newer subdivisions.
Port Allen, LA
West Baton Rouge Parish's seat across the Mississippi from downtown, with older homes and river-town humidity.
Guides & FAQs
Plain-language answers to common questions.
Why Does My AC Smell Musty? A Baton Rouge Guide
Why air conditioners in Baton Rouge homes smell musty or like dirty socks, where the smell comes from, what you can check yourself and how it is…
Your HVAC System After a Flood: A Baton Rouge Guide
What to do with a flooded AC, furnace, air handler or ductwork in the Baton Rouge area: safety, what usually needs replacing, insurance, and…
Getting Your AC Ready for a Baton Rouge Summer
A spring checklist for Baton Rouge air conditioners: filters, condensate lines, outdoor coil, thermostat, humidity check and when to schedule a…
Frequently asked questions
How do I get an HVAC quote in Baton Rouge?
Fill out the short form with your name, phone, neighborhood or ZIP and what the system is doing, and we'll call you back to talk it through. The quote is free and there is no obligation.
Is the quote really free?
Yes. Requesting a quote costs nothing, and you are never obligated to go ahead.
What HVAC problems can I ask about?
AC repair, AC installation and replacement, furnace and heating repair, heat pumps, maintenance and tune-ups, ductwork, urgent no-cooling situations, and humidity, mold smells and air quality.
Why does my house feel damp even with the AC on?
Usually the system is not removing enough moisture: it may be oversized, running the fan constantly, short on airflow or pulling in humid attic air through leaky ducts. The EPA recommends indoor humidity below 60 percent.
Who supplies natural gas in Baton Rouge?
Inside Baton Rouge, Delta Utilities took over Entergy's gas distribution business on July 1, 2025. Other areas have other providers; check your bill.
Do you cover areas outside Baton Rouge?
Yes. Requests are welcome from St. George, Shenandoah, Central, Zachary, Baker, Denham Springs, Walker, Prairieville, Gonzales and Port Allen. See the service areas.
Need AC or heating help in Baton Rouge?
Request a free quote and we'll call you back.