12 Best Furnace Repair Companies in Marietta, GA (2026)
Why Marietta, Georgia homeowners face unique Furnace Repair needs
Colder-than-average nights and high humidity in Marietta increase freeze-thaw cycles and corrosion that stress home furnaces during winter. Homeowners searching for the best furnace repair companies in Marietta, GA should expect technicians who diagnose cracked heat exchangers, pilot failures, and condensation-related corrosion.
Quick Picks
Awards based on the same publicly available signals as the Vouched Score, including provider-stated certifications and dealer status. Not independently verified.
What separates these 12 Marietta Furnace Repair pros on availability and warranties
| # | Provider | Score | Years | Best for | |
|---|---|---|---|---|---|
| 1 | BBartlett Heating & Cooling | 90 | 5.0 (2,000+) | 37+ | ★ Highest Vouched ScoreNATE-Certified ShopManufacturer-Authorized Repair |
Editorial: Mini-split installation work is listed on Bartlett's site with dedicated ductless services. Bartlett is a Carrier Factory Authorized Dealer and notes that partnership. NATE-certified technicians are stated, and technicians undergo background checks. Marietta summers bring high cooling loads; Bartlett cites local service across Cobb County. Bartlett reports family ownership since 1989, indicating long local tenure. Strengths:
Reviewers praise:
"Bartlett was great working with right from the start when Blake came to my home for the estimate. He was so professional explained everything and went above and beyond." — ★★★★★ · Google When to choose them
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| 2 | EE. Smith Heating & Air Conditioning | 88 | 4.9 (1,830+) | 64+ | |
Editorial: AprilAire IAQ products are named on their site for whole-home purification installs. E. Smith lists NATE-certified technicians on staff. E. Smith advertises Carrier Factory Authorized Dealer status for equipment matching. Marietta's hot, humid summers make their humidity-control mention locally relevant. Strengths:
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| 3 | GGarrett Mechanical | 83 | 4.9 (1,075+) | 16+ | Most Transparent PricingIgniter & Flame-Sensor Repair |
Editorial: Garrett Mechanical leads with specialist furnace repair work and documented same-day fixes. The company lists NATE certification and Carrier Authorized Dealer status. Garrett Mechanical states no overtime charges for nights, weekends, or holidays. The team says technicians are background-checked and drug-tested. Marietta homeowners benefit from same-day emergency response during cold snaps in metro Atlanta. Strengths:
Reviewers praise:
Reviewers flag:
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| 4 | CCoolpro Heating and Cooling | 83 | 5.0 (640+) | 30+ | Commercial Furnace Repair |
Editorial: Coolpro leads with NATE-certified technicians on staff, per their site. The company cites over 30 years of local service experience. Marietta winters make rapid no-heat response important; Coolpro advertises 24/7 emergency response. The website notes financing through Wells Fargo for approved credit. Several reviews praise same-day scheduling and quick restores. Strengths:
Reviewers praise:
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| 5 | SSummit | 80 | 5.0 (555+) | ||
Editorial: Summit states they diagnose problems before recommending replacements. The company reports 10+ years serving North Atlanta homeowners. Summit notes new customers get a free diagnostic with any repair. Marietta's older homes sometimes need quick heat fixes during cold snaps. Strengths:
Reviewers praise:
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| 6 | AAir Force Heating & Air | 79 | 4.8 (1,225+) | ||
Editorial: Air Force Heating & Air lists furnace repair and diagnostics as a primary service. Strengths:
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| 7 | SSelf Brothers Heating & Cooling | 79 | 5.0 (630+) | ||
Editorial: Self Brothers lists furnace replacement among its residential HVAC services on its website. The company operates from a Marietta address on Cumberland Point Drive. Marietta's occasional freezes mean gas furnaces benefit from combustion checks and proper venting. Google reviewers frequently reference fast scheduling and timely technician arrivals. Strengths:
Reviewers praise:
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| 8 | CCool Air Mechanical | 78 | 4.9 (10,915+) | Gas Valve & Combustion Repair | |
Editorial: UV-C installation is listed for in-duct and coil germicidal lamps on their site. Cool Air Mechanical notes ERV/HRV ventilators for whole-home fresh-air exchange. The company advertises financing options and online scheduling. Marietta's hot, humid summers increase demand for dehumidification and IAQ work. Google reviews suggest fast emergency response from local crews. Strengths:
Reviewers praise:
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| 9 | CCasteel Heating, Cooling, Plumbing & Electrical | 77 | 4.8 (10,410+) | 39+ | |
Editorial: Furnace replacement focus: furnace_replacement work is offered with full-system changeouts noted. Experience: Casteel lists 35+ years serving metro Atlanta homeowners. Service model: Casteel advertises flat-rate pricing and 0% financing on major repairs. Local note: Marietta winters are mild but freeze spells require correct combustion commissioning. Online presence: Casteel reports a very large volume of online reviews across platforms. Strengths:
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| 10 | SSwift Brothers Plumbing, Heating & Air | 75 | 4.8 (545+) | ||
Editorial: Swift Brothers leads with furnace repair and diagnostic services backed by Marietta technicians. The company states same-day and 24/7 emergency response for no-heat calls. The Marietta location advertises an Advantage Club for priority scheduling and seasonal maintenance. Many local reviewers note fast same-day repairs across the Atlanta metro. Strengths:
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| 11 | AANYTIME HEATING, COOLING AND PLUMBING | 75 | 4.8 (530+) | 25+ | |
Editorial: Anytime emphasizes furnace repair with gas-valve and combustion capabilities listed on their site. The company notes trained, certified, background-checked technicians. Anytime reports being locally owned and operating 25+ years in metro Atlanta. Marietta winters mean quick heat restoration matters; they advertise 24/7 emergency response for no-heat calls. Strengths:
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| 12 | CCoolray Heating & Air Conditioning | 74 | 4.8 (10,920+) | 60+ | |
Editorial: Coolray documents multi-zone ductless installs in customer reports. Coolray advertises same-day emergency response for HVAC issues. Coolray states financing options are available for larger systems. Marietta's hot, humid summers increase demand for efficient ductless cooling. Coolray shows 60+ years in business per site history. Online reviews note punctual crews and clean job sites. Strengths:
Reviewers praise:
Reviewers flag:
"I would highly recommend Coolray! Josh was great and matched a quote to get me what I needed at the best price! I truly appreciate the work they did installing a new 4 ton HVAC…" — ★★★★★ · Google When to choose them
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Typical Furnace Repair costs in Marietta, GA (2026)
Last updated
Estimated ranges for Marietta, GA. Actual cost varies with home size, equipment, and scope — always request a written quote for your job.
| Service | Typical range |
|---|---|
| Furnace service call / diagnostic fee | $65–$175 |
| Flame sensor cleaning / replacement | $70–$220 |
| Hot surface igniter replacement (installed) | $130–$395 |
| Furnace gas valve replacement (installed) | $265–$660 |
| Draft inducer motor replacement (installed) | $265–$705 |
| Furnace control board replacement (installed) | $350–$795 |
| Heat exchanger replacement (repair-vs-replace inflection) | $880–$3,100 |
| Emergency / after-hours no-heat service premium | $130–$440 |
Nearby Georgia furnace repair pricing: Albany · Alpharetta · Athens
See broader context: Furnace Repair pricing in Georgia · Furnace Repair pricing nationwide
How were these Marietta Furnace Repair providers evaluated — and which metrics mattered most?
This guide evaluated 12 Marietta furnace repair providers across emergency availability, Google review scores and counts, pricing model disclosures, certifications, and dealer status. Emphasis fell on verified Google Maps ratings, stated warranties or guarantees, and advertised emergency or same-day response details.
- Cool Air Mechanical shows 4.9/5.0 with 10,915+ reviews, according to Google Maps data.
- Coolray lists a lifetime labor warranty and flat-rate pricing, and notes same-day emergency response per their site.
- Bartlett states NATE certification and a Carrier Factory Authorized Dealer designation, per the provider's claims.
- Garrett Mechanical lists flat-rate pricing and says they apply no overtime charge for emergency calls.
- Casteel Heating, Cooling, Plumbing & Electrical lists flat-rate pricing and a satisfaction guarantee (advertised) on its public profile.
Ratings and review totals cited here are drawn from Google Maps data; verify accreditation or consumer complaints per BBB records.
How do I choose a licensed furnace repair contractor in Marietta?
- Verify the contractor's license and complaints per BBB records or the state licensing board.
- Compare Google Maps ratings and total review counts for consistency across providers.
- Confirm pricing model details, such as flat-rate or diagnostic fees, before booking.
- Request written warranty or labor terms and note any advertised emergency response window.
- Check for technician credentials like NATE certification and manufacturer-dealer listings.
4 furnace failures Marietta homes see after humid winters and what to watch for
Most common furnace problems in Marietta trace to winter humidity and colder-than-average nights, which drive condensation, corrosion, and freeze-thaw damage inside equipment and ducts. Homeowners often see heat exchanger cracks, condensate drain clogs, ignition or control failures, and short-cycling after humid winters.
- Cracked or corroded heat exchanger. Marietta's humid winters and repeated cool nights increase internal condensation and corrosion, which can lead to cracks or metal fatigue in heat exchangers.
- Condensate drain clogs and condensate-related shutdowns. Higher indoor humidity in Marietta produces excess condensate that clogs drains and safety switches, causing furnaces to shut down unexpectedly.
- Ignition and control module failures. Moisture carried into basements or utility closets during humid winters can corrode ignition components and electronic controls, producing intermittent ignition or no-start conditions.
- Short-cycling and blower motor wear. Freeze-thaw stresses and elevated humidity in Marietta can cause thermostat, refrigerant balance, or blower motor issues that force frequent on/off cycling and accelerate motor bearing wear.
How Marietta’s population, seasonal swings, and local codes shape Furnace Repair choices
Marietta's combination of colder-than-average nights and high humidity drives corrosion and condensate problems, increasing furnace repairs. Homeowners should consult local furnace repair reviews Marietta GA to find technicians who handle condensed moisture damage, heat-exchanger checks, and control-module corrosion after humid winters.
Dominant local condition: colder nights with high seasonal humidity. This pattern increases internal condensation in furnaces.
Impact: condensation accelerates metal corrosion and clogs condensate drains. That raises the risk of heat-exchanger damage and safety shutdowns.
Provider capability connection: evaluated providers commonly advertise emergency service availability. Many also list NATE certification and Carrier authorization.
Why those capabilities matter: emergency service reduces downtime during sudden failures after cold nights. NATE-certified technicians better diagnose ignition and control faults. Carrier-authorized servicing aligns with manufacturer-recommended furnace procedures and warranty work.
Pricing and permitting: several evaluated firms offer flat-rate pricing, which helps homeowners budget for repairs related to condensate damage. Georgia follows the 2021 IECC and the Construction Industry Licensing Board oversees contractor licensing. Look for providers who document license and warranty information when requesting a quote.
What Marietta homeowners ask first about Furnace Repair — quick answers and when to escalate
- How do I get a quote from these furnace repair companies?
- Submit one request on this page and we send it to the vetted furnace repair pros in Marietta, GA listed here. They send quotes back — no obligation.
- How much does furnace repair service cost in Marietta, GA?
- Furnace service call / diagnostic fee typically runs $65–$175, and hot surface igniter replacement runs $130–$395 in Marietta, Georgia. See the Furnace Repair pricing table on this page for the full per-service breakdown.
- Do Marietta furnace contractors need a registration or license from the Construction Industry Licensing Board?
- Yes — contractors must be licensed. Contractors working on furnaces in Marietta must follow licensing overseen by the Georgia Construction Industry Licensing Board. Homeowners should ask to see the contractor's registration or license number and verify it with the Georgia Secretary of State before agreeing to work. Licensed contractors are more likely to understand local code triggers and permit requirements tied to HVAC alterations under Georgia rules.
- When should a homeowner escalate an igniter or flame-sensor failure to emergency repair in Marietta?
- Escalate to emergency repair if the furnace fails to light repeatedly or produces an unusual gas smell. These symptoms can indicate a persistent ignition or combustion safety issue. Contact a technician who offers emergency service availability and who documents combustion testing. If there is any concern about gas odor, evacuate and call the gas company or emergency services first, then call a licensed furnace contractor.
- How quickly should a no-heat call be prioritized during Marietta's colder-than-average nights?
- Prioritize no-heat calls immediately during cold nights because rapid temperature drops increase risk to pipes and occupants. Many local providers advertise emergency service availability for overnight failures. When scheduling, request a time-window and written estimate, and confirm the technician will perform a heat-exchanger inspection and pressure-switch check as part of the response.
- Is a heat-exchanger inspection required after condensate or corrosion problems common in Marietta winters?
- Yes — contractors must be licensed. A heat-exchanger inspection is recommended when condensate or corrosion is present after humid winters. Corrosion can cause cracks and safety shutdowns. Ask for a documented visual inspection and, if indicated, a quoted replacement with a stated warranty (warranty years advertised). Verify the inspecting technician's credentials and whether the contractor follows manufacturer guidance for inspection steps.
- Do Marietta gas furnace repairs trigger permits or code inspections under local regulations?
- Certain gas-furnace repairs or replacements may trigger permit or inspection requirements under the 2021 IECC adopted in Georgia. Permit needs often depend on whether work alters combustion air, venting, or gas piping. Homeowners should request the contractor to state whether a permit is required and to include permit pull and inspection scheduling in the written scope of work.
- What are common signs that a furnace blower or inducer motor needs service in Marietta homes?
- Common signs include reduced airflow, unusual noise from the blower compartment, and frequent cycling of the furnace. These symptoms often follow humid winters when condensation and debris affect motor bearings and blower wheels. When hiring a contractor, ask whether the technician will inspect the blower wheel, motor amp draw, and motor-mount condition as part of the diagnostic.
- How often should Marietta homeowners schedule a furnace tune-up given local seasonal swings?
- Schedule a furnace tune-up annually, preferably before the first sustained cold period in fall. Annual maintenance helps catch condensate-related corrosion and control-module wear that are common after humid seasons. During the visit, request a condensate-drain check, heat-exchanger inspection, and written maintenance checklist to keep a service record for warranty or resale needs.
- Do the same repair and permit rules apply to commercial furnaces in Marietta?
- Commercial furnace work often requires different permits, inspections, and licensed classifications than residential work under Georgia rules. Building type, equipment size, and fuel type affect permit triggers and regulatory obligations. Owners of commercial properties should verify that the contractor carries the appropriate commercial license tier and can coordinate required municipal inspections.