Some homes need a full system replacement. Others just need a tune-up. Either way, we handle the full scope of HVAC work that keeps residential and commercial properties comfortable through every season Georgia throws at them.
On the cooling side, we repair and service central air conditioners, diagnose systems that are not cooling properly, and handle full AC unit replacement when repair no longer makes financial sense. We also install and service ductless mini-split systems for additions, sunrooms, or any space that needs cooling without existing ductwork. On the heating side, we repair furnaces, service heat pumps, and troubleshoot any heating system that is not keeping up on a cold night. When a thermostat is the problem, we handle replacement and smart thermostat installation so you get better control over your home's comfort and energy use.
We also repair and seal ductwork, which matters more than most homeowners realize. Leaking ducts push conditioned air into attics and crawl spaces rather than into living areas, and that waste shows up on your energy bill every month. Alongside duct work, we offer indoor air quality services including air filtration and purification systems, and we provide seasonal maintenance and tune-ups in both spring and fall to keep equipment running efficiently year-round. Code-compliant HVAC work on every job is the standard we hold ourselves to, whether the call is a simple tune-up or a full system installation. We'll get your comfort back on track.
Georgia's climate puts real demands on heating and cooling equipment. Long, humid summers push air conditioners hard for months at a time. Winters are mild by northern standards, but cold snaps do arrive, and a system that is not ready will let you down. Year-round indoor humidity adds a layer of comfort and air-quality concern that many homeowners do not think about until it becomes a problem. The three services below address what comes up most often for properties in this area.
Aging equipment in a Georgia climate works hard for a long season, and repair costs have a way of stacking up on older systems. When that happens, replacement is often the more practical call. We handle both sides of the system: central AC replacement for the long cooling season and furnace replacement for reliable heat when temperatures drop. If you are upgrading an older home or outfitting new construction, we can plan and install a full matched system that is sized correctly for the space. The HVAC work done right the first time means fewer callbacks and better long-term performance, and that is what we aim for on every replacement job.
Georgia's mild winters and extended cooling season make heat pumps a strong fit for a lot of properties in this area. A heat pump handles both heating and cooling from a single system, which simplifies equipment and can reduce operating costs compared to running separate units. We install heat pumps for new system builds and as replacements for older equipment that has reached the end of its service life. For spaces without existing ductwork, ductless mini-split heat pump systems give you room-by-room control and efficient performance without a major renovation. Zoning and comfort-control setups are also an option for larger homes where different areas have different needs.
High indoor humidity in Georgia is not just a summer problem. It is a year-round condition that affects how comfortable your home feels, how well your air conditioner performs, and the overall air quality inside your living space. A portable dehumidifier handles one room; a whole-home dehumidifier integrated with your HVAC system addresses the entire house. Keeping indoor humidity in the right range reduces mold risk, cuts down on allergens, and makes the air simply more comfortable to breathe. We install and service whole-home dehumidification systems as a standalone upgrade or as part of a broader indoor air quality improvement. Reach out and a technician will follow up.
When the heat or the AC quits, you do not have time to wait several days for a service window. A system that stops working in the middle of a Georgia summer or during a winter cold snap is an urgent problem, and we treat it that way. We handle no-heat and no-cool calls, full system breakdowns, and situations where something is clearly wrong but you are not sure what. We are available for weekend and after-hours service calls when the timing is not convenient for anyone.
We find it. We fix it. We test the airflow.
Every emergency call starts with a thorough diagnostic so we understand exactly what failed and why before any repair work begins. That approach keeps the fix accurate and avoids repeat visits for the same problem. We'll take care of the system from here.
Not every HVAC company works the same way, and not every property has the same needs. We are set up to serve a range of customer types across the area, from single-family homeowners to landlords managing multiple units to commercial property owners keeping a business running comfortably.
For residential customers, we handle everything from routine annual maintenance to emergency repairs to full system replacement. We work in homes of all sizes and ages, including new construction HVAC installation for builders and homeowners starting fresh. We treat your home and its system the way we would our own, which means clean work, honest recommendations, and no unnecessary upsells.
For commercial clients and property managers, we provide commercial AC repair, commercial heating service, and ongoing maintenance programs that keep equipment performing reliably across office buildings, retail spaces, apartment units, and rental properties. Landlords and property management companies count on fast response because a tenant without heat or cooling is a problem that needs to move quickly. We live and work in this community, and our work shows it.
We serve Smyrna as our home base and extend our service area throughout Cobb County and into the surrounding metro. If you are nearby, we can get to you.
Communities we regularly serve include:
If your neighborhood is not on this list, call us anyway. We cover a broad area and are happy to confirm availability for your location.
When the job is done, we leave your home clean and comfortable, and we want you to feel confident in the work that was performed. We have been doing this in the Smyrna area since 2016, and the relationships we have built with local homeowners, landlords, and businesses over those years are what keep us going.
Every job is handled by qualified HVAC technicians who know what they are doing and take the work seriously. We give you a straight answer on what your system needs, a clear quote before work begins, and no surprises when the job is complete. If you want a second opinion on a diagnosis or a quote you received elsewhere, we are glad to take a look. Pricing is transparent, and we are happy to walk you through what a repair or replacement will involve before any decision is made. We'll get your comfort back on track.
Common signs include warm air from the vents, weak airflow, the system running constantly without cooling the space, unusual noises, and a noticeable increase in your energy bill without a change in usage. If your system is showing more than one of these signs, it is worth scheduling a diagnostic before the problem gets worse.
Several things can cause this: a refrigerant leak, a frozen evaporator coil, a failing compressor, or a clogged air filter restricting airflow. A proper diagnostic is the only reliable way to find the actual cause, and some of these issues will continue to worsen if the system keeps running without a fix.
If your system is older, has needed multiple repairs in recent years, or is simply not keeping up with a Georgia summer, replacement often makes more financial sense than another repair. Heat pumps are a strong option for this area because Georgia's mild winters mean the system handles the heating load efficiently while also serving as your primary cooling system.
We start by assessing the existing setup and sizing the new equipment correctly for the space, because an improperly sized system will not perform well no matter how good the equipment is. We then handle the full installation, confirm the system is operating correctly before we leave, and make sure you understand how to use any new controls or thermostat.
Uneven temperatures usually point to one of a few things: leaking or undersized ductwork, a zoning issue, poor airflow balance, or an HVAC system that is not sized correctly for the home. We look at the whole system when this comes up, not just the room that is uncomfortable, because the cause is often somewhere else in the setup.
A spring AC tune-up covers refrigerant levels, electrical connections, coil cleaning, drain line clearing, and a full system check to confirm everything is operating efficiently before the cooling season starts. Georgia's cooling season runs long and pushes equipment hard, so catching small issues in spring is far less disruptive than dealing with a breakdown in July.
Signs include the system not turning on, blowing cold air when heating is called for, short cycling (turning on and off repeatedly without reaching the set temperature), unusual noises, and a noticeable drop in heating performance. Any of these warrant a diagnostic call before the system fails completely on a cold night.
Extreme weather can affect certain parts of an installation, particularly refrigerant charging on the outdoor unit. We schedule installations with that in mind and will let you know if conditions on the day of the job require any adjustments to the plan.
When a permit is required for the work, we handle that as part of the job. Code-compliant HVAC work on every job is the standard we hold ourselves to, and that includes meeting local inspection requirements where they apply.
Cobb County summers bring sustained high humidity that a central air conditioner alone cannot fully address. A whole-home dehumidifier integrated with your existing HVAC system removes excess moisture from every room, which makes the air more comfortable, reduces allergen and mold risk, and can make the home feel cooler at the same thermostat setting.
Yes. Thermostat upgrades and duct sealing or repair can often be done independently of a full system replacement and can meaningfully improve comfort and efficiency in an older home. We assess what is there, explain the options, and let you decide what makes sense for your situation.
Efficiency degrades over time as components wear, refrigerant charge drifts, coils accumulate buildup, and ductwork develops leaks. A system that is technically running can still be working much harder than it should to deliver the same result, and that extra effort shows up on your energy bill every month.
Booking an HVAC service call is simple, and P.A. Propp Heating and Air is ready to help with whatever your system needs, whether that is a same-day emergency repair or a planned replacement you have been thinking about. Fast turnaround. Fair pricing. Comfortable results.
Call (470) 995-4495 to schedule service, request an estimate, or talk through what your heating or cooling system needs. We are available for routine appointments and urgent calls alike, including evenings and weekends when the timing is not ideal.
We handle the full range of residential and commercial heating and cooling work across Smyrna and Cobb County, from a quick tune-up to a full system replacement. The table below breaks down each service, what it covers, and who it fits best, so you can call with a clear picture of what you need. Every job is handled by qualified HVAC technicians who diagnose accurately and work cleanly. If you have questions about a specific situation, call us and we will walk through it with you.
| System Service | What the Service Includes | Best Suited For | What to Keep in Mind |
|---|---|---|---|
| Furnace and AC System Replacement | End-of-life system evaluation, Matched replacement sizing, Removal of old equipment, Clean installation with no loose ends | Properties where repair costs no longer make sense or the system is simply too old to keep up | We walk through the options and give you a clear picture before scheduling any work |
| Emergency HVAC Service | Same-day availability, After-hours and weekend response, No-heat and no-cool situations, Urgent diagnostic and repair | Any customer whose system has gone down without warning and cannot wait for a scheduled appointment | Call us directly; a qualified HVAC technician will be in touch quickly to get a time confirmed |
| Whole-Home Dehumidification and Humidity Control | Whole-home dehumidifier installation, Integration with existing HVAC system, Humidity level assessment, Air quality improvement across all rooms | Cobb County homeowners dealing with musty odors, condensation, or worsening allergy symptoms in summer | A whole-home unit works across every room, unlike a portable dehumidifier that only covers one space |
| Heating and Furnace Repair | Furnace not turning on, Blower and ignition diagnosis, Heat exchanger inspection, Controls and cycling check | Any home or building that has lost heat or is heating unevenly | Emergency and same-day furnace repair available; do not wait on a system that will not fire |
| AC Repair and Service | Diagnosis of cooling failures, Refrigerant leak check, Condenser and coil inspection, Airflow assessment | Homeowners or businesses with an AC that has stopped cooling or is underperforming | Same-day and after-hours availability for situations that cannot wait through a Georgia summer |
| Seasonal Maintenance and Tune-Ups | Spring AC tune-up, Fall furnace tune-up, Refrigerant level check, Full system cycle and safety inspection | Any homeowner or property manager who wants to avoid mid-season breakdowns and extend equipment life | Georgia's long cooling season puts real hours on AC equipment; annual maintenance keeps it reliable |
| Full System Installation and Replacement | Proper load and sizing assessment, Equipment selection guidance, Full installation by qualified technicians, Code-compliant work on every job | Homeowners and property managers replacing an aging or failing central system | Correct sizing is as important as the equipment itself; we assess before recommending |
| Ductwork Repair and Sealing | Leaking duct diagnosis, Duct sealing and repair, Full ductwork replacement when needed, Airflow and uneven-temperature troubleshooting | Homes with high energy bills, uneven temperatures, or rooms that never seem to stay comfortable | Leaky ducts waste conditioned air before it reaches the living space and force the system to run longer |
| Thermostat and Smart Control Installation | Programmable thermostat installation, Smart thermostat setup, Failed thermostat replacement, System performance verification after install | Homeowners who want better scheduling, more consistent temperatures, or an upgraded control | An outdated or failing thermostat affects comfort and energy use more than most people expect |
| Heat Pump Installation | Site and load assessment, Equipment options walkthrough, Full installation and commissioning, Both heating and cooling function confirmed | Smyrna homes and businesses considering an upgrade from a traditional split system | Georgia's mild winters make heat pumps an efficient fit for this climate year-round |
| Heat Pump Repair and Service | Heating and cooling mode diagnosis, Reversing valve check, Refrigerant charge inspection, Air handler and blower assessment | Properties with a heat pump that is not heating in winter or cooling in summer | Heat pumps handle both seasons, so a careful diagnosis matters before any repair is made |
| Indoor Air Quality and Air Filtration | Whole-home air purifier installation, UV air purifier and air scrubber options, Upgraded filtration systems, Integration with existing HVAC equipment | Households dealing with Georgia pollen, humidity-related air quality issues, or health-driven filtration needs | All systems we install work with your existing HVAC setup, no separate standalone equipment needed |
How do I know if my AC or furnace needs to be replaced rather than repaired?
A few signs point toward replacement over repair: the system is more than 15 years old, repair estimates are approaching half the cost of a new unit, or the equipment is struggling to keep up even when it is running. We look at the full picture when we diagnose a system and give you an honest read on whether repair or replacement makes more financial sense for your situation.
Why would a heat pump stop heating in winter or cooling in summer?
Heat pumps handle both functions, so a failure in either mode can have several causes. Common ones include a low refrigerant charge, a faulty reversing valve that controls which direction the system runs, a problem with the air handler or blower, or a controls issue. We diagnose the system carefully before recommending a repair, because the symptom does not always point directly to the cause.
How often should I schedule a maintenance tune-up for my HVAC system?
Once a year for each function the system handles. For a traditional split system, that means a spring AC tune-up before the Georgia cooling season starts and a fall furnace tune-up before the first cold nights. For a heat pump that handles both seasons, an annual visit covering both modes is the right interval. Regular maintenance catches small problems before they become expensive failures.
Same-Day and Emergency Availability
When the system goes down in the middle of a Georgia summer or on a cold January night, we offer same-day and after-hours service so you are not waiting until the next business day to get a technician on-site.
Is the HVAC work you do permitted and inspected to code?
Yes. We perform code-compliant HVAC work on every job, which means the work meets local requirements and, where a permit is required, we handle that as part of the job. If you have questions about what a specific project involves from a permitting standpoint, ask us when you call and we will give you a straight answer.
Why is one room in my house always hotter or colder than the rest?
Uneven temperatures usually point to one of a few things: leaky or undersized ductwork, a damper that is not positioned correctly, an airflow restriction somewhere in the system, or a system that was not sized correctly for the layout of the home. We start with an airflow and ductwork assessment to find where the system is losing efficiency before recommending a fix.
What do strange noises from my HVAC unit usually mean?
It depends on the sound. A banging or clanking noise often points to a loose or failing component inside the unit. A high-pitched squealing can indicate a blower motor or belt issue. Rattling at startup sometimes means a loose panel or debris in the system. A grinding noise is more serious and usually means a motor or bearing is failing. If the system is making a noise it did not used to make, call us and we will diagnose it before it becomes a larger problem.
Work Performed by Qualified HVAC Technicians
Every job, whether it is a routine tune-up or a full system replacement, is handled by qualified HVAC technicians who diagnose accurately, work cleanly, and do not leave until the system is running the way it should.
How do ductwork leaks affect my energy bills?
Leaky ducts allow conditioned air to escape into unconditioned spaces like attics, crawl spaces, and wall cavities before it ever reaches the rooms you are trying to heat or cool. The system compensates by running longer, which drives up energy costs and puts more wear on the equipment. Sealing the ducts recovers that lost efficiency and often makes a noticeable difference in how evenly the home is conditioned.
What does a seasonal tune-up actually cover?
For an AC tune-up, we check refrigerant levels, clean the condenser and evaporator coils, clear the condensate drain line, inspect electrical connections, and run the system through a full cycle to confirm it is operating at the right capacity. For a furnace tune-up, we clean the burners, inspect the heat exchanger, test the ignition system, check the flue, and verify the system is cycling safely. The goal is to catch anything that would cause a failure during the season when you need the system most.
Code-Compliant Work on Every Job
We treat your home and its system the way we would our own, which means every installation and repair meets code requirements and is done with the kind of attention to detail that holds up over time.
Can a dirty filter or coil really hurt my system that much?
Yes. A clogged filter restricts airflow across the system, which forces the blower to work harder and can cause the evaporator coil to freeze in summer or the heat exchanger to overheat in winter. A dirty evaporator or condenser coil reduces the system's ability to transfer heat, which means it runs longer and works harder to reach the same temperature. Changing the filter regularly and scheduling annual maintenance are the two simplest things you can do to protect the equipment.
Do I need to be home when the technician comes?
For any work that requires access to the interior of the home or building, yes. Someone needs to be present to provide access to the equipment and to review the diagnosis before any repair begins. If you have a property manager or a tenant who can be on-site and is authorized to make decisions, that works just as well.
How does pricing and estimating work before a job starts?
The technician diagnoses the system first, then explains what we found and what the repair or installation will involve before any work begins. We give you a clear picture of the cost so there are no surprises on the invoice. For larger jobs like system replacement, we walk through the options and provide a quote before scheduling the installation.
If you are not sure which service fits your situation, call us at (470) 995-4495 and a qualified HVAC technician will help you figure out the right next step.
(470) 995-4495