Kennesaw HVAC Company handles heating and cooling repair, service, and installation for homes and businesses across Kennesaw and Cobb County. Whether the AC stopped cooling in the middle of July, the furnace went quiet on a January night, or a heat pump needs a full replacement, we scope the job, give you a price, and get it scheduled. We pick up the phone. We scope the job. We book the visit.
We are available seven days a week, from 9 AM to 8 PM.
Call (470) 995-9879 for a quote.
Keeping a home comfortable starts with a system that runs right, and the same is true for a rental property, an office building, or a commercial space. We handle the full range of residential and commercial HVAC work: AC repair and service, furnace repair and installation, heat pump repair and installation, mini-split and ductless systems, ductwork repair and sealing, thermostat and smart-control installation, indoor air quality and air filtration, seasonal maintenance and tune-ups, and emergency HVAC service.
Property managers dealing with a rooftop unit that has gone down, homeowners chasing hot and cold spots room to room, and business owners whose office AC stopped responding mid-week all reach us through the same line. When airflow is uneven or a compressor is short-cycling, the diagnostic starts at the source, not at the parts list. We do code-compliant HVAC work on every job, residential and commercial alike.
From aging systems to brand-new installs, cooling problems in this part of Georgia tend to show up fast and get uncomfortable faster. When the AC is blowing warm air, running but not cooling, freezing up at the coil, tripping off repeatedly, or simply won't turn on, a visit starts with a full check of the system before anything is quoted.
That means looking at refrigerant level, the evaporator coil, the condenser, and the blower motor. A clogged drain line or a failing capacitor often explains what looks like a bigger problem. We also handle central AC replacement and new air conditioning installation when a system has reached the end of its useful life.
A seasonal AC tune-up before the cooling season is the straightforward way to catch small issues before they become a no-cool call in August. We'll get the repair scoped and scheduled.
The homes and systems in this area have their own demands, and a furnace that short-cycles or blows cold air in December is not a problem that waits. We handle furnace repair, furnace replacement, and heating system service for both residential and commercial properties. Boiler service is also in scope where a boiler is the space-heating source.
A heating service call covers the heat exchanger, the burner, airflow through the system, and the control circuit. The thermostat is confirmed as communicating before sign-off, because a furnace that fires correctly but reads the wrong signal from the control side will keep failing. We also handle furnace tune-ups and preventive maintenance ahead of the heating season.
Pick up the phone and we'll get started.
Heat pumps run in both directions, and in Kennesaw that means working hard through long, hot summers and continuing to deliver heat through Georgia's mild but real winters. When a heat pump stops heating, stops cooling, blows cold air in heat mode, or keeps shutting off before the space reaches temperature, the diagnostic covers both the refrigerant circuit and the reversing valve.
We handle heat pump repair across all makes, as well as full heat pump replacement and new installation. A heat pump tune-up in spring or fall keeps both modes ready before the season demands them. Call for a heat pump quote and we'll confirm the rate before anything is scheduled.
We're ready to get your heating and cooling running again.
Ready to get the comfort back? A ductless mini-split is often the right answer for a room addition, a garage conversion, or an older home where running ductwork is not practical. We service and repair ductless systems when they stop cooling, stop heating, or develop airflow problems at the air handler.
Mini-split installation is also a strong option for zone control in a home where one part of the house runs significantly warmer or cooler than the rest. We handle the equipment side of the installation and can quote the job over the phone once the space is described.
Leaky ductwork is one of the most common reasons a home has uneven temperatures from room to room. When conditioned air escapes into an attic or crawl space before it reaches the living area, the system runs longer and the house still does not reach temperature. We inspect, seal, and repair ductwork, and we can quote duct replacement when sections are too far gone to seal effectively.
A thermostat with a blank screen, a thermostat that is not responding, or a control that keeps the system running past the set point are all worth a service call before assuming the equipment itself has failed. We install programmable thermostats and smart home thermostats, and we confirm the new control is reading and communicating correctly before the visit is closed.
The cause of an uneven house is actually investigated before solutions are proposed, because poor airflow and poor air quality often share the same root. We install whole-home air purifiers, UV air purifiers, and air scrubbers that work alongside the HVAC system. HVAC filter upgrades and air quality inspections are part of this work. Where humidity is contributing to discomfort or air quality complaints, that gets addressed in the same conversation.
The homes and systems in this area have their own demands, and a system that has not been serviced in a year or two tends to show it in the energy bill before it shows it in a breakdown. A seasonal HVAC tune-up covers coil cleaning, filter check, refrigerant level, burner inspection, and a thermostat test.
Spring is the right time to confirm the cooling side is ready before the heat arrives. Fall is the right time to check the heating side before the first cold stretch. Either tune-up is a straightforward call, and the rate is confirmed before we schedule. Call us and we'll handle the rest.
No heat in January and no cooling in July are both situations that move fast. We take emergency HVAC calls seven days a week, from 9 AM to 8 PM. When a system goes down, makes an unusual noise, or produces a smell that was not there yesterday, calling sooner gives more options than waiting.
When you call about an emergency, you get no pressure and no gimmicks, just straight HVAC answers about what the visit covers and what it costs. Whoever picks up knows the trade and can scope the job. We'll get the repair scoped and scheduled.
Georgia's climate asks a lot of HVAC equipment. Kennesaw summers are long, hot, and humid, and the shoulder seasons bring moisture that a standard system may not fully handle. Winters are mild by northern standards but cold enough that heating demand is real, and a system that has not been maintained shows it when temperatures drop. The featured services below are the ones that come up most often in this area and for good reason.
When a system is aging or struggling through the peak of the season, full replacement is often the more practical path. An undersized or aging AC unit that cannot keep up through a Georgia July is a strong candidate for replacement before the next cooling season begins. We quote whole-home HVAC replacement, walk through the options on the call, and handle the installation on the equipment side.
A paired furnace-and-AC replacement is the most common full-system job in this area. Getting both sides of the system replaced together means the equipment is matched and the efficiency gains apply to both heating and cooling seasons.
Cobb County's climate sits in the zone where heat pumps perform well year-round. Efficient cooling in summer and capable heating through Georgia's mild winters make a heat pump a practical choice for homeowners who want one system handling both seasons. We quote heat pump installation, explain what the equipment covers, and confirm the rate before scheduling begins.
For homes currently on a gas furnace, a heat pump installation is worth a direct comparison on the call. The right answer depends on the home, the existing equipment, and how the space is used.
Georgia summers bring humidity levels that a standard AC system may reduce but rarely eliminate. A whole-home dehumidifier works alongside the HVAC system to pull excess moisture from the air, reduce the load on the cooling equipment, and make the indoor temperature feel closer to what the thermostat says. We install and service whole-home dehumidifiers and can quote the job when you call.
Humidity control also matters in the shoulder seasons, when outdoor air is warm and wet but not hot enough to run the AC continuously. A dedicated dehumidifier handles those weeks without overcooling the space.
From aging systems to brand-new installs, commercial HVAC problems carry a cost that residential calls do not. A rooftop unit that goes down in a retail space or an office where the heat stopped working mid-week is not a situation that can wait for a standard appointment. We handle commercial AC repair, commercial furnace repair, commercial heat pump repair, and rooftop unit service for property managers and business owners across the area.
Commercial HVAC maintenance and planned replacement are also in scope. If you manage multiple properties or a building with more than one system, the quote covers what the visit includes and the rate is confirmed before anything is scheduled. Call for a commercial HVAC quote and get a straight answer on cost and availability.
Clear answers. Real pricing. Real fast response. When you call for a quote, the rate is confirmed on the phone before anything is scheduled, and you get a straight answer on what the visit covers. AC repair, furnace repair, heat pump installation, full system replacement: the price is discussed before a visit is booked, not after the work is done.
We do code-compliant HVAC work on every job, and the scope is agreed on the call so there is no ambiguity about what is included. Whether the job is a diagnostic visit or a full system replacement, the process starts with a conversation about what the work involves and what it will cost.
We serve Kennesaw and the communities around it throughout Cobb County and beyond. Nearby towns we regularly work in include Acworth, Marietta, Woodstock, Smyrna, Powder Springs, and Canton. If you are searching for HVAC service near me, AC repair near me, furnace repair near me, or heating and cooling installation near me, we cover your area.
Call (470) 995-9879 and we will confirm availability for your location.
When you call, someone who knows the trade answers, takes a description of the system and the problem, and confirms the service call rate before anything is scheduled. The person who comes out runs a full diagnostic, identifies the cause, and explains what the repair or replacement involves before quoting the work. You decide whether to proceed, and the job gets scheduled from there. Nothing starts without a price agreed and a scope explained.
We serve Kennesaw and the surrounding communities throughout Cobb County and the northwest Atlanta metro, including Marietta, Acworth, Smyrna, Woodstock, Powder Springs, Austell, Canton, Dallas, and Cartersville.
If you are outside Kennesaw but nearby, call (470) 995-9879 and we will confirm whether your address falls within our service range.
Commercial properties, rental units, and HOA communities across the area are all in scope.
Call (470) 995-9879 as soon as you notice the system is down.
While you wait, turn the thermostat off to avoid repeated failed start attempts, which can stress components further. Check that the filter is not completely blocked and that the circuit breaker serving the unit has not tripped, but do not attempt to open the equipment. We take emergency calls every day from 9:00 AM to 8:00 PM and will scope the job on the phone before anything is scheduled.
A system that has failed more than once in the same season, cannot maintain the set temperature on a typical Georgia summer afternoon, or is well past its manufacturer's expected service life is a strong candidate for replacement rather than another repair. The person who comes out will look at what the system actually needs and explain both options before recommending one. If repair makes more sense given the age and condition, that is what gets quoted. If replacement is the better path, the cost and scope of that gets explained before any work is agreed.
The most useful details are the type of system you have (central AC, heat pump, furnace, mini-split), roughly how old it is, and a description of what it is doing or not doing. If it is a commercial property, the building size and the number of units involved helps scope the job. You do not need to have a model number or serial number ready before calling. The more detail you can give about the symptom, the more accurate the phone quote will be.
Turn the system off at the thermostat and call (470) 995-9879 right away.
A burning smell can indicate an electrical component overheating inside the air handler or furnace, and running the system while that is happening can cause further damage. A loud banging or scraping noise often points to a mechanical failure in the blower or motor. We handle these calls every day from 9:00 AM to 8:00 PM and will walk you through what to check before the visit is scheduled.
Yes. Older homes in Kennesaw and across Cobb County often have ductwork that has never been sealed, original equipment that has been repaired multiple times, or systems that were sized for the original build spec rather than how the space is used today. The diagnostic covers what is actually there, not what a newer home might have. If the existing system is too far gone or too undersized, replacement options get explained alongside the repair quote so you can decide what makes sense.
A pattern of repeated failures usually points to one of two things: a system that has reached the end of its useful life, or an underlying problem that earlier repairs did not address. When the person who comes out sees a history of recurring failures, the diagnostic is aimed at finding whether there is a root cause that has been missed. If the system is simply worn out, the replacement options and costs get explained clearly so you can make an informed decision rather than keep putting money into a failing unit.
The honest answer is that cost depends on what the system is, what the diagnosis finds, and what the repair or replacement actually involves. A capacitor replacement costs far less than a compressor swap, and a single-zone mini-split installation costs less than a whole-home system replacement. The service call rate is confirmed on the phone before anything is scheduled, and the repair or replacement price is given before any work begins. That way you know what you are agreeing to before the job starts.
Kennesaw HVAC Company is available seven days a week, from 9 AM to 8 PM. We check the furnace. We check the AC. We leave it running right.
Call (470) 995-9879 to get a quote on repair, service, or installation.
The rate is confirmed on the call, the scope is agreed before anything is scheduled, and the visit covers what was discussed. We're ready to get your heating and cooling running again.
Heating and cooling work covers a wide range of jobs, and knowing what each service involves helps you make the right call before anything is scheduled. The table below lays out what we handle, who each service fits, and a practical note worth knowing before you call. If a service is not listed or you are not sure which one applies to your situation, call us and we will scope it on the phone.
| Service | What's Included | Best For | Things to Know |
|---|---|---|---|
| Heating & Furnace Repair | Ignition and flame sensor inspectionHeat exchanger checkBlower motor testingControl board and limit switch diagnosis | Homes where the furnace is not reaching temperature, short-cycling, or blowing cold air | Cobb County winters are mild but real. A furnace that limps through one cold snap may not make it through the next without a repair. |
| Emergency HVAC Service | Short-notice calls are taken when the schedule has room.No-heat and no-cool calls takenDiagnosis and repair quoted on the visitAvailable every day 9 AM to 8 PM | Any home or commercial property where the system has gone down and waiting is not an option | Call in and describe what the system is doing. We scope the situation on the phone and confirm what the schedule can accommodate in the same conversation. |
| Thermostat & Smart-Control Installation | Programmable thermostat replacementSmart thermostat integrationZoning control setupCommunication verification with air handler and condenser | Homeowners upgrading from an older thermostat or adding scheduling and remote control to an existing system | A thermostat that is not communicating correctly with the air handler can cause short-cycling or temperature swings even when the equipment itself is in good shape. |
| Indoor Air Quality & Air Filtration | Whole-home air filtration installationUV air treatment systemsVentilation assessmentHumidity and particulate concerns addressed | Households dealing with allergens, dust, odors, or air quality concerns that the AC alone does not resolve | Georgia's humid summers create conditions where mold and dust mites are more likely to take hold indoors. Filtration and humidity control together address more of the problem than either one alone. |
| Seasonal Maintenance & Tune-Ups | Coil cleaning and airflow checkRefrigerant pressure verificationElectrical component inspectionThermostat and controls confirmed | Homeowners and property managers who want to catch small problems before they become expensive failures | Spring AC tune-ups before the heat builds and fall furnace tune-ups before the first cold snap are the two most useful windows in this climate. A system that gets checked regularly fails less often at the worst time. |
| AC Repair & Service | Condenser and coil diagnosisRefrigerant leak detectionCapacitor and contactor testingAirflow and pressure checks | Homes or buildings where the AC is running but not cooling, short-cycling, or making unusual sounds | Georgia's long cooling season means AC problems often surface in May before the first real heat wave. Catching a failing component early avoids a full breakdown in July. |
| Whole-Home Dehumidification & Humidity Control | Ducted whole-home dehumidifier installationIntegration with existing HVAC systemMoisture load assessmentIndoor air quality improvement | Georgia homes that reach the right temperature but still feel muggy or show signs of elevated indoor humidity | A ducted dehumidifier works alongside the AC rather than competing with it. It handles the whole house and does not require emptying a reservoir the way a portable unit does. |
| Full System Installation & ReplacementMost Popular | Load calculation and equipment sizingAir handler and condenser replacementMatched system commissioningThermostat communication verified before sign-off | Homes or commercial properties where the existing system is past the point of repair or has lost capacity | A correctly sized system handles peak cooling load on a humid August afternoon and still heats efficiently on a cold January night. Sizing to the actual load of the space is part of every installation. |
| Heat Pump Installation | Existing system removal or supplementationRefrigerant line installationDuctless mini-split option for spaces without ductworkCommissioning in both heating and cooling modes | Kennesaw and Cobb County properties replacing a gas furnace or aging AC with a single system that handles both seasons | Mild winters in this area mean heat pump efficiency rarely drops into the range where supplemental heat carries the load. That makes heat pumps a practical fit for most residential properties here. |
| Heat Pump Repair & Service | Reversing valve diagnosisRefrigerant charge checkDefrost cycle testingHeating and cooling mode verification | Properties with a heat pump that will not heat, will not cool, or runs constantly without reaching setpoint | Heat pumps are well-matched to Georgia's climate, but a stuck reversing valve or low refrigerant charge shows up in both modes. Diagnosis covers both before a repair is quoted. |
| Ductwork Repair & Sealing | Duct leak detectionFlex duct inspection and repairReturn sizing assessmentSealing and re-insulation of problem sections | Homes with uneven temperatures, high utility bills, or rooms that never seem to reach the thermostat setting | Leaky ducts can bleed conditioned air into unconditioned space before it reaches the living area. Sealing the duct system often improves comfort without any change to the equipment. |
Call us at (470) 995-9879 and we will scope the job on the phone, explain what the visit covers, and get it scheduled from there.
(470) 995-9879