Gurnee HVAC Company handles heating and cooling work for homeowners, landlords, property managers, and commercial clients across Gurnee and Lake County. Whether the call is about a furnace that quit overnight, an AC that stopped keeping up, or a full system that needs replacing, we cover it. Repair, service, installation, and everything in between.
Built for homeowners. Ready for property managers. Ready for your system.
We're available every day from 9 AM to 8 PM.
Call (224) 429-9789 for a quote.
A quick tune-up and a full system swap are two different jobs, and we handle both. The scope of what we do covers AC repair and service, furnace repair and service, heat pump work, full system installation and replacement, ductwork, thermostats, indoor air quality, and emergency calls when the heat or cooling goes out without warning.
Residential work is the bulk of what comes through, but we also take calls from property managers, landlords, and commercial clients. A rental property with a failed furnace in January needs the same prompt attention as a single-family home, and we approach both the same way: the HVAC work done properly, start to finish.
Reach out and we'll start at the unit.
Noticing uneven temperatures or a spike in energy bills? Those are two of the more common reasons people call, and both have a short list of likely causes. A system blowing warm air, a furnace cycling on and off without reaching temperature, rooms that stay stuffy while others cool down fine, an AC that freezes up, or a system that simply won't turn on all point to something specific that a diagnostic visit can identify.
Filters, airflow and thermostat settings explain more faults than people expect. Before the visit turns into a parts conversation, those basics get checked first. The diagnostic covers what the system is doing, what it should be doing, and where the gap is. You get no-pressure estimates, priced up front, so the decision about what to do next is yours to make with full information.
Emergency calls for no heat and no cool are taken every day, 9 AM to 8 PM.
If the system is down and the timing is bad, call (224) 429-9789 and we'll find the fault and set it right.
Lake County runs the full range. Winters bring hard freezes that test every furnace, and summers bring the kind of humidity that makes an undersized or poorly maintained system fall behind fast. Gurnee sits squarely in that four-season pattern, which is why the three services below come up more often here than almost anywhere else.
A full system replacement starts with an honest look at what the home or building actually needs. That means assessing the space, the existing ductwork, and the load before any equipment gets specified. Equipment sized for the space rather than for the last unit makes a real difference in both comfort and operating cost, and it is the only way a new system performs the way it should from day one.
Old equipment gets removed, the new system goes in, and the work covers both the furnace and the AC where a paired replacement makes sense. The rate for the job is confirmed before anything is scheduled, so there is no guesswork on cost going in.
A heat pump moves heat rather than generating it, which makes it efficient across the shoulder seasons Lake County gets in spring and fall. When temperatures drop hard, a heat pump with a backup heating stage keeps the home comfortable through the cold months as well. We handle both installation and ongoing service, including ductless mini-split systems for spaces where running ductwork is not practical.
If a heat pump is already installed and running in the wrong mode, short-cycling, or not keeping up with demand, that is a service call, not necessarily a replacement. We diagnose what it is doing before recommending anything further.
Summer humidity in this part of Illinois is not just uncomfortable. It makes a correctly cooled home feel warmer than the thermostat reads, and it contributes to air quality problems over time. A whole-home dehumidifier works through the existing HVAC system to pull moisture out of the air across the entire house, not just one room the way a portable unit does.
The result is a space that feels cooler at the same set temperature, with less strain on the AC. It connects directly to the indoor air quality side of the system, and it is one of the more practical upgrades for homes in this area that deal with damp summers year after year.
Good HVAC work isn't complicated, it's just done right, and that applies to the everyday maintenance and support work as much as it does to a full replacement.
Ductwork repair and sealing. Leaking ducts bleed conditioned air into unconditioned spaces, which shows up as uneven temperatures and higher bills. We inspect, seal, and repair ductwork to get the airflow back where it belongs.
Thermostat and smart thermostat installation. A thermostat that is not reading the space correctly, or one that does not match the system it controls, creates problems that look like equipment faults. We install and configure standard and smart thermostats to work with what is already in place.
Air filtration and air purifier installation. Whole-home air filtration works through the existing system to reduce particulates, allergens, and other airborne material. If indoor air quality is a concern, this is a practical step that does not require separate equipment running in individual rooms.
Seasonal maintenance and tune-ups. A furnace tune-up before winter and an AC tune-up before summer catch small problems before they become service calls. We inspect the system, check the components that wear first, and flag anything that needs attention.
We're one phone call from getting your comfort right.
Making comfort simple is most of what the job is, and that starts with a clear conversation about what the work involves and what it costs. When you call, you get a rate before anything is scheduled. That covers both residential and commercial work, whether the call is for a repair, a tune-up, or a full system replacement.
Questions about cost are reasonable and expected. How much a repair runs depends on what the diagnostic finds. How much a replacement costs depends on the equipment and the scope. Both answers come on the call, not after the fact. No-pressure estimates, priced up front, mean you decide what to do next without any obligation attached.
Straight answers on the phone. Real HVAC work. Quick to respond.
Call (224) 429-9789 for a quote, available every day 9 AM to 8 PM.
We cover Gurnee and the communities around it across Lake County, including Waukegan, Zion, Winthrop Harbor, Antioch, Libertyville, Lindenhurst, Round Lake Beach, and North Chicago. Residential and commercial calls are both taken across the full service area.
If you are not sure whether we cover your address, call (224) 429-9789 and we will confirm it on the spot.
A furnace that is short-cycling, struggling to reach the set temperature, running louder than it used to, or requiring more frequent repairs is showing the signs that replacement may be the more practical path. In Lake County, where winters run cold and long, a furnace that cannot keep up reliably is a real problem. Age alone is not the deciding factor, but an older unit that is also showing performance issues is worth evaluating.
Call (224) 429-9789 and we can talk through what the repair-versus-replace calculation looks like for your situation.
When cooling is uneven across the house but the outdoor unit and air handler are running normally, ductwork is often the place to look. Leaking or disconnected ducts send conditioned air into wall cavities or crawl spaces instead of into the rooms where it is needed. A diagnostic visit checks both the equipment and the airflow through the system to identify where the loss is happening. If the duct system is the issue, sealing it often improves comfort more noticeably than a component repair on the unit.
A whole-home dehumidifier integrates directly with the existing HVAC system and pulls moisture from the air across the entire house, not just the room where a portable unit sits. In Gurnee's humid summers, that makes a real difference: a home that is correctly cooled but still feels damp is often dealing with more moisture than the AC alone can remove. The dehumidifier runs through the ductwork and operates independently of the cooling cycle, so it handles humidity even when the AC is not running. It is one of the more practical upgrades for homes in this area that deal with high humidity year after year.
No heat in winter, no cooling during a heat wave, and a system that has completely stopped responding are the situations that move to the front of the schedule. A furnace that goes out during a hard freeze in Lake County or an AC that fails during a stretch of high humidity in July are both conditions that affect health and safety, not just comfort. We take emergency calls every day from 9:00 AM to 8:00 PM.
Call (224) 429-9789 and describe what the system is doing so we can determine the fastest path to getting it addressed.
Turn the system off if it is making unusual noises, smelling like burning, or showing any sign of a mechanical problem beyond simply not heating or cooling. If the heat is out in winter, close interior doors to retain warmth in the rooms you are using and use safe supplemental heat sources if available. If cooling is out in summer, close blinds on sun-facing windows to reduce heat gain. Do not attempt to bypass controls or reset the system repeatedly, as some faults are triggered by a safety lockout that repeated resets can complicate.
A banging or clanking sound from the air handler or outdoor unit usually points to a loose or failing mechanical component, such as a blower wheel or fan blade. Squealing often indicates a belt or motor bearing issue. Rattling at startup can be a loose panel or debris in the unit, but persistent rattling during operation points to something more structural.
In all three cases, turning the system off and calling (224) 429-9789 is the right move, because running the system through a mechanical fault can turn a repair into a replacement.
A burning smell at the start of the heating season is sometimes just dust burning off the heat exchanger after months of inactivity, and it usually clears within a few minutes. A burning smell that persists, or one that appears mid-season, points to something more serious: a failed motor, an overheating component, or debris on the heat exchanger. A musty smell typically indicates mold or biological growth somewhere in the duct system or on the evaporator coil. Both warrant a diagnostic visit, and the system should be turned off if the smell is strong or accompanied by any smoke.
Outdoor unit work, including heat pump installation, can be affected by extreme cold, heavy rain, or icy conditions that make safe access to the equipment difficult. In Lake County, that is most relevant during the winter months. Scheduling a heat pump installation in the shoulder seasons, spring or fall, is generally more straightforward. When weather is a factor on a scheduled visit, the situation is communicated before the technician arrives and the visit is rescheduled to the earliest workable date.
Yes. Work on the HVAC equipment requires the system to be de-energized at the unit before any components are accessed. For a repair, that means the disconnect at the outdoor unit and the power switch at the air handler are both off before the work starts. For an installation, the same applies during the changeover. The person doing the work handles that as a standard part of the visit. If the circuit feeding the unit needs attention, that is work for an electrician, not part of what we do on the HVAC side.
A heat pump handles both heating and cooling from a single outdoor unit, which means the installation involves setting up the reversing valve, the defrost controls, and the backup heating stage in addition to the refrigerant circuit and the air handler. A straight AC replacement does not include those components. Sizing also differs, because a heat pump in a climate like Lake County needs to be matched to the heating load as well as the cooling load. We scope both types of installation on the call before anything is specified.
Older systems sometimes use refrigerant types or component configurations that require additional handling or sourcing time. Equipment installed in tight crawl spaces, attic installations with limited clearance, or rooftop units that require special access all add time to the job. In each case, the access situation and any additional cost it creates are discussed during the scoping call or the diagnostic visit before the work proceeds. Nothing is added to the scope without explaining why.
Gurnee HVAC Company is available every day from 9 AM to 8 PM for heating and cooling work across Gurnee and Lake County.
When you call (224) 429-9789, someone who knows the trade picks up, the scope of the job gets talked through, and the price is confirmed before anything is scheduled.
Call for a quote when you're ready. We're one phone call from getting your comfort right.
Every heating and cooling job is different, and the table below maps out what each service covers, who it fits best, and one practical detail worth knowing before you call. Whether the need is a quick repair or a full system replacement, we scope the work on the phone and confirm the price before anything is scheduled.
Use this as a starting point, then call (224) 429-9789 with your specific situation and we will talk through the details.
| HVAC Service | What's Included | Best Suited For | Good to Know |
|---|---|---|---|
| Heat Pump Installation |
| Homeowners looking to handle both heating and cooling from one system, or adding a mini-split to a space without existing ductwork | Lake County's shoulder seasons make heat pumps a practical fit. Scheduling installation in spring or fall avoids weather delays that can affect outdoor unit work. |
| Seasonal Maintenance & Tune-Ups |
| Homeowners who want to catch small problems before they become service calls, ideally before heating or cooling season starts | A furnace tune-up before winter and an AC tune-up before summer are the two most practical times to schedule. Both visits include a check of the components that wear first. |
| Heating & Furnace Repair |
| Any home or rental property where the furnace is not reaching temperature, cycling oddly, or has stopped running | In Lake County winters, a furnace that cannot keep up reliably is a real problem. Early-season diagnostics catch issues before the first hard freeze. |
| Heat Pump Repair & Service |
| Homes with an existing heat pump that is short-cycling, running in the wrong mode, or not keeping up with demand | A heat pump that seems to be struggling in cold weather may be operating normally in defrost mode. We check the defrost cycle first before recommending parts. |
| AC Repair & Service |
| Homeowners or property managers with an AC that is not cooling, freezing up, or short-cycling | Airflow, refrigerant and controls all get checked before a guess is made, so the repair targets the actual fault rather than the most common one. |
| Whole-Home Dehumidification & Humidity Control |
| Gurnee homes that feel damp or stuffy in summer even when the AC is running correctly | A whole-home unit pulls moisture across the entire house through the duct system, unlike a portable unit that handles only one room. |
| Indoor Air Quality & Air Filtration |
| Households concerned about allergens, particulates, or airborne material circulating through the home | Whole-home filtration works through the existing duct system, so no separate equipment runs in individual rooms. |
| Full System Installation & ReplacementMost Popular |
| Homeowners replacing aging equipment or upgrading to a paired furnace and AC system sized for the actual space | Equipment sized for the space rather than for the last unit makes a real difference in comfort and operating cost. The rate is confirmed before anything is scheduled. |
| Thermostat & Smart-Control Installation |
| Homeowners upgrading from an outdated thermostat or installing a smart control that matches their system | A thermostat that does not match the system it controls can create problems that look like equipment faults. Compatibility is confirmed before installation. |
| Ductwork Repair & Sealing |
| Homes with uneven temperatures, rooms that stay warm while others cool down, or energy bills that have climbed without explanation | Leaking ducts bleed conditioned air into wall cavities and crawl spaces. Sealing them often improves comfort more noticeably than a repair on the unit itself. |
| Emergency HVAC Service |
| Any situation where the heating or cooling system has stopped working and the timing affects health or safety | Emergency calls are taken every day from 9 AM to 8 PM. Describing what the system is doing when you call helps us determine the fastest path to getting it addressed. |
How often should a heating or cooling system be tuned up?
Once a year for each system is the practical answer. A furnace tune-up before the first cold stretch of the season and an AC tune-up before summer heat arrives are the two most useful windows. Catching a worn component or a low refrigerant charge before the system is running hard every day is far less disruptive than a mid-season service call. If the system has not been serviced in more than a year, that is a good reason to call now rather than waiting for the next seasonal window.
How do ductwork leaks affect energy bills and comfort?
When ducts leak at joints or connections, conditioned air escapes into wall cavities, attic spaces, or crawl spaces before it reaches the rooms it is meant to serve. The system runs longer to compensate, which drives up energy use without improving comfort. Rooms at the end of long duct runs tend to feel the effect most. Sealing the duct system addresses the loss at the source, and the improvement in both comfort and operating cost is often noticeable within the first billing cycle after the work.
What are the signs of a refrigerant or airflow problem?
An AC that blows air but does not cool the space down, ice forming on the indoor coil or the refrigerant lines, or a system that runs continuously without reaching the set temperature are all signs worth calling about. Airflow problems often show up as uneven cooling across the house rather than a complete failure. Both refrigerant and airflow issues are checked during a diagnostic visit, and the findings are explained before any repair is recommended.
System Checked Before Parts Are Quoted
We diagnose what the system is actually doing before recommending any repair or replacement. The findings are explained on the visit so the decision about next steps is yours to make with full information.
When does it make more sense to replace a system than to repair it?
The repair-versus-replace question depends on the age of the equipment, the cost of the repair relative to the value of a new system, and whether the existing unit is still performing efficiently. A system that is requiring repairs more frequently, struggling to hold temperature, or running on refrigerant types that are harder to source is often a better candidate for replacement than continued repair. We talk through the specifics on the call, including what the repair would cost and what a replacement would involve, so the decision is based on real numbers rather than a general rule.
What does a seasonal tune-up actually cover?
A furnace tune-up covers the heat exchanger, burners, ignition system, blower motor, and filter. An AC tune-up covers the evaporator and condenser coils, refrigerant charge, capacitors, and airflow through the system. Both visits include a check of the thermostat and controls. The goal is to identify anything that is wearing or out of spec before it causes a failure during the season when the system is working hardest. Any findings are explained before repair options are discussed.
Why is one room in the house hotter or colder than the rest?
Uneven temperatures across a home usually point to one of three things: a duct that is leaking, disconnected, or undersized for the run length, a damper that is partially closed or stuck, or a room with unusual heat gain or loss from windows, insulation, or exterior exposure. Humidity, sun exposure and insulation all change how a system should be sized and how air gets distributed. A diagnostic visit checks the airflow at the registers and traces it back through the duct system to find where the imbalance is.
Emergency No-Heat and No-Cool Calls Handled
We take emergency calls every day from 9 AM to 8 PM. A furnace that goes out during a Lake County freeze or an AC that fails during a July heat stretch moves to the front of the schedule.
What does a thermostat or smart-control upgrade actually involve?
The first step is confirming that the new thermostat is compatible with the existing system, particularly with heat pumps and multi-stage equipment that require specific wiring configurations. Once compatibility is confirmed, the old unit comes off, the wiring is connected to the new control, and the thermostat is configured to match the system's heating and cooling stages. We walk through the settings before leaving so the thermostat is operating correctly and the homeowner knows how to use it.
How does a dirty filter or coil affect system performance?
A clogged filter restricts airflow through the system, which forces the blower to work harder and reduces the volume of conditioned air reaching the living space. Over time, restricted airflow allows the evaporator coil to drop below freezing, which leads to ice forming on the coil and a further reduction in cooling. A dirty condenser coil on the outdoor unit reduces the system's ability to release heat, which raises operating pressure and stresses the compressor. Both are common causes of calls that look like equipment failures but are resolved by cleaning or filter replacement.
Older Systems and New Installs Both Covered
Whether the job is diagnosing a system that has been running for fifteen years or installing new equipment from the ground up, the work gets the same attention to detail either way.
How do I choose between a furnace and a heat pump for heating?
In Lake County, where winter temperatures regularly drop well below freezing, a heat pump needs a backup heating stage to handle the coldest days reliably. A gas furnace generates heat directly and performs consistently regardless of outdoor temperature. A heat pump with a backup heating stage is an efficient choice across the shoulder seasons and handles mild winters well. A furnace is the more straightforward choice where winter lows are the primary concern. We can talk through both options on the call based on the home's existing equipment, ductwork, and heating load.
What are the signs of a failing compressor or blower motor?
A compressor that is starting to fail often causes the outdoor unit to trip the breaker, produce a hard start sound, or run without actually cooling the refrigerant. The system may run but not bring the temperature down. A failing blower motor typically shows up as reduced airflow at the registers, unusual noise from the air handler, or the system running without moving much air. Both are components we check during a diagnostic visit. In some cases, replacing a failing component is the right call. In others, the age and condition of the system make replacement the more practical path.
Do I need to be home for an HVAC service visit?
For any work inside the home, including air handler access, ductwork, thermostat installation, or indoor coil service, someone needs to be present to provide access. For outdoor unit work only, it depends on whether the disconnect and access panel can be reached without entering the home. The specifics are confirmed when the visit is scheduled. If access arrangements need to be made for a rental property or a home where the owner will not be present, we work that out on the call before the visit is booked.
Call (224) 429-9789 to talk through your heating or cooling situation. We will scope the job on the call, confirm the price before anything is scheduled, and get your system addressed.
(224) 429-9789