Moreau's Thermal Services
“Every technician I have had is very knowledgeable about their craft and will educate you about the how hvacs are to operate.”
Best HVAC Contractors in Slidell, LA
15 companies listed · 9 in Slidell · 3 open 24/7 · 5 open weekends · 13 rated 4.5+
Data verified October 21, 2026
Benfatti Air Conditioning & Heating
“Thanks to Benefatti and their gentlemen for taking care of my needs prompt and fast..”
Gowland's Heating & A/C
“Randal was very professional and efficient when he came to do our fall/winter inspection.”
Climate Restoration Air Conditioning & Heating
“Within 2 days of contact we had a whole new unit installed with an affordable price.”
Lewis Air Conditioning
“Everyone was very knowledgeable and explained everything to me during the process!”
Accu-Temp LLC
“He seemed genuinely concerned that he had to recommend that we replace the unit.”
The 15 companies listed for Slidell, LA work on furnaces, heat pumps and air conditioners. Each profile repeats what the company publishes about its hours, its license and the equipment it fits, alongside ratings and quotes drawn from public reviews.
Area overview: Slidell, LA
Of the 15 companies we list here, 9 are in Slidell itself and 6 come from Pearl River (1, 6 mi). The companies on this page are rated from 4.0 to 5.0 across 2,477 reviews; 7 have 50 or more reviews and 13 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (87%), punctuality (80%) and quality (77%). The topics that come up most in reviews of the companies on this page are "price" and "efficient". 3 are open around the clock; 5 are open on Saturdays and 4 on Sundays. The services the companies on this page list most often on their websites are air conditioning (2), heating (2) and indoor air quality (2). 3 show a license on their websites; 2 list staff certifications (NATE) and 1 has a BBB rating of A or A+. 11 have ten or more years of experience, the longest 51 years. 3 offer emergency call-outs; 7 offer financing or payment plans; 6 give free estimates; 4 are family- or locally-owned and 5 list coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Why do some of these firms show another city?
9 of the 15 companies are based in Slidell; the others come from other towns within 10 mi. This trade drives to you, so a shop over the county line is normal. Ask whether your address carries a travel charge.
Slidell Refrigeration & Metal
“When we have had AC issues, we have been fortunate to have Dennis with Slidell Refrigeration respond and get our problems resolved.”
Mega Air Inc.
“Always my only choice for my home & who I recommend to my friends.”
Year Round Heating & Air Conditioning
“Donnie, Jeanette and their team are amazing to have as your HVAC team.”
Griffith Properties A/C & Heating
“Definitely would recommend this company to anyone who need A/C or heating work done!”
Vallee Air Conditioning and Heating
“Vallee a/c is very responsive friendly and knowledgeable of all our a/c concerns.”
Brendan's Air Conditioning & Heating
“Brendan and his staff were efficient & effective in getting our 3 & 4 ton a/c units installed.”
Major Appliance AC & Heating
“Dawson was courteous, he called to let me know he was on the way and when done, let me know what the issue was…got the job done quickly!”
Northshore A/C and Heating Services
“Chris has maintenance, replaced and repaired our HVAC and mini split systems.”
Love's Mechanical
“Mr Washington came the next day after I called, was on time, was very friendly, knowledgeable, and helpful.”
Why these companies made our list
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