HVAC PROS is Aberdeen's full-service heating and cooling contractor, ready to handle everything from a quick AC repair to a complete system replacement for homes and businesses across Harford County. We keep same-day appointments available and give you up-front pricing before any work begins, so you know exactly what to expect. Our qualified HVAC technicians are familiar with the full range of residential and commercial equipment, and when you have no heat in January or no cool air in August, we treat it as the emergency it is. Call (667) 942-9789 for a quote today.
Schedule it. We fix it. You're comfortable.
We service heating and cooling systems every day, and we're good at it, from a furnace that stopped working overnight to a full HVAC system installation for a new build or a commercial property. Residential homeowners, landlords, property managers, and business owners all rely on us for the same thing: dependable work done right the first time. We handle repair, maintenance, and full replacement across every major system type. Being locally owned, our name rides on every service call, and we treat your home and its system the way we would our own.
If your AC stopped working, is blowing warm air, or just can't keep up on a hot Maryland afternoon, we can usually get a technician out the same day. We diagnose the full range of cooling problems, including condenser and compressor issues, refrigerant leaks, airflow restrictions, and uneven temperatures from room to room. When repair is the right call, we fix it cleanly and explain what we found. When the system is past its useful life, we walk you through central air installation options and give you a clear quote before anything is ordered.
Seasonal AC tune-ups are available too. A pre-season inspection catches small problems before they become expensive ones in the middle of summer. We show up ready to go to work.
The hardest part of an HVAC problem is knowing when to call, and a furnace blowing cold air or failing to start on a cold morning is a clear answer. We respond quickly to no-heat calls throughout the area and handle the full range of furnace problems, from air handler and blower repairs to ignition and heat exchanger issues. Same-day furnace repair is available, and we stock common parts so most repairs wrap up in a single visit.
When replacement makes more financial sense than another repair, we help you choose a system sized right for your home and install it efficiently. Furnace tune-ups are also available each fall to keep your heating system running through the season. We provide up-front pricing on every job, repair or replacement, so there are no surprises on the invoice.
Heat pumps are a strong fit for Maryland's climate. Winters here are cold but not extreme, and that mid-Atlantic range is exactly where heat pump efficiency holds up well. If your heat pump is not heating in winter or not cooling in summer, we diagnose the problem and repair it. Emergency heat pump repair is available when the system goes down at a bad time.
We also handle full heat pump installation and replacement for homeowners and property managers who want an efficient all-in-one system. Zoning and comfort-control options are available for larger homes or properties that need room-by-room temperature management. Heat pump maintenance keeps the system performing at its best through both seasons. Pick up the phone and we'll handle the system.
Aberdeen's mix of cold winters, humid summers, and some of the oldest housing stock on the East Coast shapes the HVAC work we do most here. The services below come up constantly in this area, and we have handled each of them many times over.
Boilers and steam or hot-water radiator systems are common throughout older Harford County neighborhoods, and they require a technician who knows how to work on them. We repair, maintain, and replace boilers, and we handle hydronic and radiant heat systems when they stop circulating heat properly. Work is performed by qualified HVAC technicians familiar with these systems. Whether your boiler is not firing, losing pressure, or simply due for its annual service, we can get it sorted.
The Northeast carries the vast majority of the country's oil-heated homes, and Maryland is part of that picture. Many homeowners in the area are weighing a move away from oil heat, either to natural gas or to an electric heat pump, as a way to reduce fuel costs and improve efficiency. We handle the full equipment side of that conversion, removing the old oil system and installing the new heating equipment. It is one of the more meaningful upgrades a homeowner can make, and we walk you through the options clearly before any work begins.
Older homes in Aberdeen and across Harford County were often built without ductwork, and adding central air to them is not always practical. Ductless mini-splits solve that problem cleanly. We install single-zone and multi-zone systems for additions, older homes, garage spaces, and any area where a window unit used to be the only option. If a mini-split you already have is not working properly, we repair those too. Ductless systems also give you room-by-room control, which is useful in homes where comfort varies from one end to the other.
A thermostat that is not reading correctly or responding properly can make a well-functioning system feel like it is broken. We install and replace thermostats of all types, including programmable models and smart thermostats like Nest and Ecobee. A properly calibrated control improves both comfort and efficiency, and the installation is straightforward. If your thermostat is unresponsive, running the system at odd times, or simply outdated, a replacement is a quick fix with a real payoff.
Leaky or damaged ducts push conditioned air into walls, attics, and crawlspaces instead of into the rooms where you need it. The result is uneven temperatures, higher energy bills, and a system that runs longer than it should. We inspect, repair, and seal ductwork throughout the home. When ducts are too far gone to repair effectively, we handle ductwork replacement as well. Fixing the duct system is often the fastest way to improve comfort in a home that never quite heats or cools evenly.
Harford County summers are humid, and that humidity works its way inside. Whole-home dehumidifiers address the moisture problem at the source rather than room by room. We also install whole-home air filtration systems, UV air purifiers, air scrubbers, and whole-home humidifiers for the dry winter months. If air quality is a concern in your home, whether from dust, allergens, or humidity, we can assess what the system needs and give you a straightforward recommendation.
If you're not sure your system can keep up, a tune-up before the season starts is the right move. A spring AC tune-up and a fall furnace tune-up each cover the full inspection: checking controls and safeties, cleaning the evaporator coil, testing airflow, verifying refrigerant levels, and confirming the system is operating within spec. Catching a worn part or a dirty coil in October costs far less than an emergency repair in February.
We offer prompt response, even for last-minute comfort calls, and our maintenance pricing is transparent upfront. Landlords and property managers who need annual HVAC inspections across multiple units can call us to work out a schedule that makes sense for their portfolio.
Booking an HVAC service call is simple, and when the system is completely down, we make it faster. We respond to no-heat and no-cool emergencies, including after hours and on weekends. A furnace that goes out in the middle of the night or an AC that dies before a heat advisory is not a situation we ask you to wait through until Monday morning.
Affordable rates. Flexible timing. Reliable comfort.
We keep you informed from diagnosis to final test, so you always know what we found, what it will take to fix it, and what the work will cost before we start. Emergency calls get the same clear pricing as any other service visit.
Property managers, office buildings, retail spaces, and light industrial facilities all need HVAC systems that stay running. We handle commercial HVAC repair, commercial AC repair, commercial heating repair, and rooftop unit service for businesses throughout the area. Work is performed by qualified HVAC technicians comfortable with commercial equipment and the demands that come with it.
When a commercial system needs full replacement, we provide up-front estimates and coordinate the work to minimize disruption to your operation. We also offer commercial HVAC maintenance schedules for clients who want to stay ahead of equipment failures rather than react to them.
We quote before we start, on every job. That means you know the cost of a repair, a tune-up, or a full system replacement before any work begins. HVAC repair costs vary depending on the system, the part, and the complexity of the job, and we explain all of that clearly rather than handing you a bill at the end. The same applies to installation and replacement estimates.
If you want to know what a job will cost, the fastest way to find out is to call. We'll give you a straight answer. We'll take care of the system from here.
We are based in Aberdeen and serve customers throughout Harford County and the surrounding region, including Bel Air, Havre de Grace, Edgewood, Joppa, Perryville, Churchville, Fallston, and Forest Hill. If you are nearby and need heating or cooling service, give us a call.
When you call (667) 942-9789, we ask a few questions about what the system is doing and get a technician scheduled for a time that works for you. The technician arrives, diagnoses the problem, and walks you through what they found and what it will cost before any work begins. Once you approve the repair or service, we complete the work and test the system before we leave.
Yes, we keep same-day appointments available for repair and service calls throughout Aberdeen and Harford County. Availability depends on the day and how many calls are already scheduled, so calling early gives you the best chance of a same-day slot. For emergencies, we work to get a technician out as quickly as possible.
We take calls every day from 7:00 AM to 11:00 PM, including weekends. That coverage means most urgent situations can be handled the same day without waiting until the next business morning. Emergency situations that fall outside normal hours can still be addressed, so call and we will work out a plan.
Yes, we serve customers throughout Harford County and into neighboring Cecil County. Communities we regularly cover include Havre de Grace, Bel Air, Edgewood, Joppa, Churchville, Perryville, Elkton, and Fallston. If you are unsure whether we reach your area, call and we will confirm.
We do. We take calls seven days a week from 7:00 AM to 11:00 PM, so Saturday and Sunday appointments are available for routine service and urgent repairs alike. Weekend slots can fill up, especially during peak heating and cooling seasons, so calling ahead helps.
It helps to know the make and model of your system if you can find it, a brief description of what the system is doing or not doing, and the best time window for a visit. You do not need to have all of that ready before you call. We can usually gather what we need during the conversation.
Check the thermostat settings first to confirm it is set to the right mode and temperature. Then check your circuit breaker to make sure the system has power. If both look fine and the system still will not respond, call us at (667) 942-9789 and we will get a technician out to diagnose the problem.
The decision usually comes down to the age of the system, the cost of the repair, and how efficiently the system has been running. A repair on a system that is several years past its expected lifespan can make financial sense in some cases and not in others. When we diagnose your system, we give you a straight answer on both options so you can decide with full information.
Yes. Older homes across Harford County often have systems that are well past the age of typical equipment, including oil furnaces, hot-water boilers, and older central air setups. We work on all of these and can assess whether a repair or a full replacement is the better path. Homes built without ductwork are also a common situation, and ductless mini-splits are a practical solution we install regularly.
For routine tune-ups and non-urgent service, a few days to a week of lead time is usually enough outside of peak season. During the busiest weeks of summer and early winter, lead times can stretch a bit. Calling early in the season, before the first heat or cold snap, is the best way to get a convenient appointment.
HVAC PROS has been serving Aberdeen and Harford County since 1998, and the work speaks for itself over 28 years of local service. Same-day appointments are available, pricing is up-front, and every job is backed by local accountability. Whether you need a quick repair, a seasonal tune-up, or a full system replacement, call (667) 942-9789 for a quote and we will get you scheduled. We'll take care of the system from here.
We handle the full range of residential and commercial heating and cooling work in Aberdeen and across Harford County, from a same-day repair call to a complete system replacement. Every job gets upfront pricing before work begins, and our qualified HVAC technicians are familiar with the equipment found in older and newer homes alike. The table below covers what each service includes, who it fits best, and a practical note to help you decide where to start. Call (667) 942-9789 and we will help you figure out the right next step.
| Service | What It Covers | Best Suited For | Helpful Details |
|---|---|---|---|
| Heating & Furnace Repair | no-heat emergency response, ignition, blower, and heat exchanger repair, airflow and safety-control diagnosis | any home or building that has lost heat or is heating unevenly | We stock common furnace parts so most repairs wrap up in a single visit rather than a return trip |
| Boiler & Hydronic Heating Service | boiler repair, maintenance, and replacement, steam and hot-water radiator system service, pressure, circulation, and firing diagnosis | older Harford County homes with boiler or radiator heat that has stopped circulating properly | Boilers and hydronic systems are common in the area's older housing stock and require a technician familiar with how they work |
| Indoor Air Quality & Air Filtration | whole-home dehumidifier installation, air filtration and UV purifier installation, whole-home humidifier installation for dry winter months | households dealing with excess humidity, dust, allergens, or dry winter air | Harford County summers are humid, and whole-home dehumidification addresses moisture at the source rather than room by room |
| Ductless Mini-Split Installation | single-zone and multi-zone mini-split installation, mini-split repair for existing systems, room-by-room comfort control without ductwork | older homes without ductwork, additions, garages, or any space where a window unit has been the only option | Mini-splits are a practical solution in Aberdeen and across Harford County, where many homes were built without central duct systems |
| Seasonal Maintenance & Tune-Ups | spring AC tune-up and inspection, fall furnace or heat pump tune-up, controls, coil, airflow, and refrigerant checks | homeowners who want to catch small problems before they become expensive mid-season breakdowns | Scheduling a tune-up before the season starts costs far less than an emergency repair once the weather turns |
| Thermostat & Smart-Control Installation | programmable and smart thermostat installation, Nest and Ecobee setup and calibration, replacing unresponsive or outdated controls | anyone whose thermostat is misreading temperatures, running the system at odd times, or simply outdated | A properly calibrated thermostat improves both comfort and energy efficiency with a relatively quick installation |
| Emergency HVAC Service | no-heat and no-cool emergency response, after-hours and weekend availability, same-day dispatch for system-down situations | anyone dealing with a complete system failure, especially in extreme heat or cold | We take calls every day from 7:00 AM to 11:00 PM, including weekends, and we do not ask you to wait until Monday morning |
| Full System Installation & Replacement | new central AC or furnace installation, full HVAC system replacement for homes and commercial buildings, equipment sizing and upfront replacement estimates | homeowners and property managers ready to replace an aging or failing system | We walk you through equipment options and give you a clear quote before anything is ordered or installed |
| Oil-to-Gas & Heat-Pump Conversion | removal of existing oil heating equipment, installation of replacement gas or heat pump system, equipment-side conversion with upfront estimate | homeowners who want to move away from oil heat to reduce fuel costs and improve efficiency | Maryland sits in the Northeast corridor where oil heat is still common; conversion is one of the more meaningful upgrades available |
| AC Repair & Service | diagnose and repair cooling problems, condenser, compressor, and refrigerant issues, airflow and uneven-cooling diagnosis | homeowners or businesses with an AC that has stopped working or is underperforming | Same-day appointments are often available; calling early in the day gives you the best chance at a same-day slot |
| Ductwork Repair & Sealing | duct leak detection and sealing, damaged duct section repair or replacement, airflow balancing after duct work | homes with uneven temperatures, high energy bills, or a system that runs longer than expected | Leaky ducts push conditioned air into walls and attics rather than the rooms you are paying to heat or cool |
| Heat Pump Repair & Service | heating and cooling mode diagnosis, refrigerant and reversing-valve repair, defrost cycle and airflow checks | homes with an all-in-one heat pump system that is not heating or cooling properly | Maryland winters fall right in the range where heat pump efficiency holds up well, making prompt repair worth the call |
How do I know whether to repair my system or replace it?
The decision usually comes down to three things: the age of the system, the cost of the repair, and how efficiently the equipment has been running. A repair on a system that is well past its expected lifespan can make sense in some cases and not in others. When we diagnose your system, we give you a straight answer on both options so you can decide with full information rather than guessing.
What does a seasonal tune-up actually cover?
A full tune-up covers the inspection of controls and safety switches, cleaning of the evaporator or heat exchanger, testing airflow, verifying refrigerant levels on cooling systems, and confirming the system is operating within its designed specs. The goal is to catch a worn part or a dirty coil before it causes a breakdown in the middle of the season, when repair calls are hardest to schedule.
Why is one room in my home hotter or colder than the rest?
Uneven temperatures usually point to one of a few causes: leaky or undersized ductwork, a blower that is not moving enough air, a dirty filter restricting airflow, or a system that was not sized correctly for the home. We diagnose the full picture rather than treating the symptom, and we explain what we find before recommending a fix.
Upfront Quotes With No Surprise Fees
We quote before we start, on every job. You know the cost of a repair, a tune-up, or a full system replacement before any work begins, and that number does not change when the invoice arrives.
What are the signs that my AC or furnace may need to be replaced?
Age is the first signal. Most central AC systems last 12 to 15 years and most furnaces 15 to 20 years, though that varies with maintenance history. Other signs include frequent repairs in recent seasons, a system that runs constantly without reaching the set temperature, unusual noises that have gotten worse over time, and energy bills that have climbed without a clear reason. We assess all of that during a diagnostic visit and give you an honest read on where the equipment stands.
Do I need to be home when the technician arrives?
Someone over 18 should be present for the visit so we can walk through what we found and get approval before any work begins. We give you upfront pricing at the time of diagnosis, and we do not start a repair without your go-ahead. If scheduling is complicated, call us and we will work out a window that fits your day.
What can strange noises from my HVAC system mean?
Different sounds point to different problems. A banging or rattling noise often means a loose component inside the air handler or furnace. A grinding sound can indicate a blower motor bearing that is wearing out. A hissing or bubbling sound near a refrigerant line may signal a leak. A clicking that does not stop usually points to an ignition or control issue. None of these are sounds to ignore, and most are easier to fix when caught early.
Experienced With Older and Newer Systems
From aging oil furnaces and hot-water boiler systems to current heat pumps and ductless mini-splits, our qualified HVAC technicians work on the full range of equipment found in Aberdeen and across Harford County.
How do ductwork leaks affect my energy bills?
When ducts leak, conditioned air escapes into wall cavities, attics, and crawlspaces instead of reaching the rooms you are heating or cooling. The system has to run longer to compensate, which raises energy use and puts extra wear on the equipment. Sealing leaky ducts is often one of the fastest ways to improve comfort and reduce monthly costs in a home that never quite heats or cools evenly.
What is involved in switching from oil heat to a gas furnace or heat pump?
We handle the equipment side of the conversion: removing the existing oil heating system and installing the new furnace or heat pump. We give you a clear estimate before anything is ordered, walk you through the equipment options that fit your home, and complete the installation efficiently. The gas line connection and any electrical circuit work are handled by the appropriate licensed trades; we focus on the heating equipment itself.
Same-Day and Emergency Availability
We keep same-day appointments available and take calls every day from 7:00 AM to 11:00 PM, including weekends, so a system that goes down does not have to wait until the next business morning.
How does upfront pricing work on a service call?
When the technician arrives, they diagnose the system and then walk you through exactly what they found and what it will cost to fix it before any work begins. You approve the repair at that point. There are no surprise charges added at the end. The same process applies to tune-ups, installations, and replacement estimates.
What should I check before calling about a system that will not turn on?
Start with the thermostat: confirm it is set to the right mode and that the temperature setting is above or below the current room temperature depending on whether you are heating or cooling. Then check the circuit breaker for the air handler and outdoor unit to make sure neither has tripped. If both look fine and the system still does not respond, call us and we will get a technician out to find the cause.
Can you work on older heating and cooling systems in Harford County homes?
Yes. Older homes throughout the area often have equipment well past the age of typical residential systems, including oil furnaces, hot-water boilers, steam radiator setups, and older central air configurations. We work on all of these. When we assess an older system, we give you an honest comparison of repair cost versus replacement cost so you can make the call that makes the most financial sense for your situation.
Every situation is a little different, so the fastest way to get a straight answer on your system is to call (667) 942-9789 and talk it through with us.
(667) 942-9789