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Quick facts
- AreaHattiesburg
- StateMS
- Providers19
- Climate zone3A-Warm-Humid
- Heating degree days3,000
- Recommended systemheat pump dominant
Why HVAC matters in Hattiesburg
Hattiesburg sits in IECC climate zone 3A-Warm-Humid with average January temperatures of 46°F and July highs around 80°F. With 1,900 cooling degree days, air conditioning is critical during summer months.
MS (Forrest County) falls in IECC 3A-Warm-Humid. HDD 3000 / CDD 1900 per NOAA 1991–2020 state averages drive a heat pump dominant HVAC strategy. Climate data is zone-level; consult a contractor for site-specific load calcs.
Heat pump recommended for Hattiesburg
An air source heat pump is the ideal system for this climate zone — it heats in winter and cools in summer with one unit.
With mild winters (avg 46°F in January) and 3,000 heating degree days, heat pumps operate at peak efficiency year-round here.
About Hattiesburg HVAC
19 HVAC providers in Hattiesburg give homeowners real choice without overwhelming the shortlist. Expect quotes within 3–5 business days. Forrest County pricing tends to track the regional median, with premium brands and efficiency tiers driving the range.
Hattiesburg's climate (IECC zone 3A-Warm-Humid) keeps outdoor temps inside the efficient range of air-source heat pumps most of the year, with January averages around 46°F. That's why heat-pump conversions have overtaken straight AC + furnace installs in most of the local market. Homeowners in Hattiesburg should expect seasonal pricing swings — spring and fall are the value windows for installs. Mississippi Power's Mississippi Power Heat Pump Rebate currently offers up to $750 toward a qualifying system, which meaningfully shifts the cost-of-ownership math.
Top local providers
Request quotes →- installationrepairinspectionemergency
What customers say “After speaking with Mr. James the owner, we came to a mutual agreement. At the moment I am satisfied with the Generac…”
- KDC Air & HeatTop rated
What customers say “Update: Aug 2024 - We had KDC install a new Thermostat. Explained everything. Made sure we understood the new…”
- Mingledorffs - HattiesburgTop rated
What customers say “I cannot recommend Scott and his HVAC services highly enough. From start to finish, the experience was professional,…”
What customers say “We want to thank Bellevue Air Conditioning, Heating & Electric for all the hard work. We called an they came out to…”
- Bennett Heating & AirTop rated
What customers say “Wonderful experience from start to finish. They worked all day getting our new unit in. They were very attentive to…”
- Bowman Heating & Air ConditioningTop rated
What customers say “Patrick called me before arriving. He was very courteous and friendly. He put shoe covers over his shoes to keep from…”
- Alan's A/C, Heat, & ElectricTop ratedinstallationrepairinspection
What customers say “Highly recommended! I had to replace an aging 5 ton unit this spring. I got three estimates for comparable units. Alan…”
- Cannon Heating & Air Service LLCTop rated
What customers say “I absolutely recommend Cannon Heating and Air. Shane communicated with us closely from setting an arrivial time to…”
- Pine Belt Heating & AirTop rated
What customers say “I had a great experience with Pine Belt Air Quality Services. They came out promptly, diagnosed the issue with my…”
- Sunrise Heat & AirTop rated
What customers say “Highly recommend using Sunrise Heat and Air. I called to set up an appointment for my unit to be checked and service…”
- Kenny's Heating and Air, LLCTop rated
What customers say “We needed our whole system replaced due to it being an outdated unit that was original to the home we purchased. I saw…”
- Hattiesburg Heating Air & ElectricalTop rated
What customers say “The Askew’s have always been one phone call away for myself and my business. Response time has been immediate via phone…”
What customers say “I had Oak Grove install a new A/C unit when mine died this summer. Let me say these guys are masters of their craft.…”
What customers say “I was very pleased with all areas of service! Customer Service was quick to answer the phone and got me an appointment…”
What customers say “I don't understand all bad reviews!? They have their rules! You obey and communicate properly with the guys, NO…”
What Hattiesburg homeowners say
“We want to thank Bellevue Air Conditioning, Heating & Electric for all the hard work. We called an they came out to access the damage of our AC unit, it was dripping water excessively. They replaced a 29 year AC (old dinosaur) with a new AC unit cal…”
“My a/c was not cooling my house during the summer like it should. I contacted a friend that I trust and she highly recommended Steve's Heating & Air. I called Mr. Steve and he came on out to my house. He is very knowledgeable and was up front with…”
“Okay, so I called about the heat not working & I figured I'd be put on a wait list for days...they CAME OUT THE SAME DAY! The specialist was professional, fast & proficient...I mean he had everything up & running in no time. Their prices are good t…”
Local pricing snapshot
Repairs typically run $150–$600. Full system replacements range from $4k for a basic furnace to $12k+ for a premium heat pump. Heat pumps are the recommended system for this climate zone, offering both heating and cooling in one unit.
Available rebates in Hattiesburg
- Mississippi Power: Mississippi Power Heat Pump Rebate — $200–$750 for heat pump
Federal tax credits (up to $2,000 for heat pumps) can stack with utility rebates. See full cost breakdown →
Nearby service areas
Mississippi hub →Explore more Mississippi markets from the state hub.
Popular comparisons in Hattiesburg
- AirSouth Cooling, Heating, Plumbing, and Electrical vs KDC Air & Heat4.8★ vs 5.0★
- AirSouth Cooling, Heating, Plumbing, and Electrical vs Mingledorffs - Hattiesburg4.8★ vs 5.0★
- KDC Air & Heat vs Mingledorffs - Hattiesburg5.0★ vs 5.0★
- KDC Air & Heat vs Bellevue Air Conditioning, Heating & Electric, LLC5.0★ vs 4.9★
- Mingledorffs - Hattiesburg vs Bellevue Air Conditioning, Heating & Electric, LLC5.0★ vs 4.9★
- Mingledorffs - Hattiesburg vs Bennett Heating & Air5.0★ vs 4.8★
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Frequently Asked Questions
What's the best heating system for Hattiesburg?
Hattiesburg is in IECC climate zone 3A-Warm-Humid with mild winters (avg January: 46°F). Air source heat pumps are the recommended system — they provide both heating and cooling efficiently in this marine climate, and qualify for substantial utility and federal rebates.
How important is air conditioning in Hattiesburg?
Very. With 1900 cooling degree days and summer highs regularly exceeding 80°F, AC is essential in Hattiesburg. Central AC or a heat pump (which provides both heating and cooling) is strongly recommended. Budget $3,500-$7,000 for a quality cooling system installation.
What HVAC rebates are available in Hattiesburg?
Hattiesburg homeowners can stack multiple incentives: Mississippi Power offers up to $750 for heat pump installations. Add the federal 25C tax credit ($2,000), and total savings can reach $2,750+. Ask your installer to itemize which rebates apply to your specific project.
How much does HVAC work cost in Hattiesburg?
In Hattiesburg, typical costs range from $150-$600 for repairs, $4,000-$8,000 for a standard furnace or AC replacement, and $6,000-$14,000 for a heat pump system. After available rebates, heat pump installations often net out to $4,000-$9,000. Get 2-3 written quotes to compare — prices vary significantly between contractors.
How do I verify a HVAC contractor is licensed in Mississippi?
Mississippi requires a State Board of Contractors license for commercial HVAC work over $50,000 or residential work over $10,000 — it includes a Mechanical classification for HVAC, plus a Residential Builders License for smaller residential jobs. Verify at msboc.us/search_online. Below those thresholds, licensing is municipal (Jackson, Gulfport, Hattiesburg each require local registration). Always confirm an active license, current general-liability and workers' comp insurance, and any local mechanical permit.
Licensing verified weekly. Reviews refreshed within the last 30 days.
Licensing data: Mississippi State Board of Contractors (commercial work over $50,000 / residential over $10,000; municipal licensing handles residential otherwise) · Company data: verified business records + Google Business profile
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