Palatine HVAC Company handles heating and cooling calls across Palatine and the surrounding Cook County area, from a furnace that stopped working overnight to an AC that can't keep up on a hot July afternoon. When you call, someone who knows the trade picks up, scopes the job with you, and confirms the repair or install scope priced before the work starts. Heat restored. Cooling dialed in. Comfort back.
Dealing with a furnace that won't keep up or an AC that can't cool? Those are the calls we handle, and the diagnostic is always where we start. A furnace blowing cold air, short cycling, or making a banging noise on startup points to a different fix than one that simply won't turn on. We work through the likely causes before quoting parts, because a replaced component that was not the actual problem does not solve anything.
On the cooling side, refrigerant leaks, condenser coil fouling, failed capacitors, and blower motor faults each show up differently, and the symptoms overlap enough that a proper diagnosis matters. Heat pump not heating in January or not cooling in August is its own diagnostic path, and defrost-cycle faults in particular get misread as compressor failures. We service mini-split and ductless systems too, single-zone and multi-zone, for both repair and new installation.
Beyond the equipment itself, ductwork leaks quietly waste conditioned air and leave rooms at the far end of the house too hot in summer and too cold in winter. We repair and seal duct systems, install and program thermostats and smart controls, and address indoor air quality with filtration upgrades that work with the existing system. Call and we'll handle the furnace, the AC, and the ductwork.
Palatine sits in the Chicago metro, where winters are long and genuinely cold and summers combine real heat with high humidity. That combination drives the service calls here more than almost anything else. The three services below come up constantly in this market, and each one is worth understanding before you need it.
A furnace or AC that made it through last winter may not make it through the next one. In a market like Palatine, where temperatures can stay below freezing for weeks and summer humidity makes a struggling AC feel worse than the thermometer suggests, aging equipment that short cycles, loses efficiency, or requires repeated repairs is often closer to replacement than another fix. We assess the full system before recommending anything, and second opinions on replacement quotes are welcomed. If a contractor has told you the system needs to go, call us and we will look at it. The scope and the price are confirmed before any work is scheduled, so you know what you are committing to.
A heat pump handles both heating and cooling from a single system, which makes it a practical option in a four-season market. Cold-climate models now carry ratings for sub-zero performance, which changes the conversation for northern Illinois homeowners who assumed a heat pump could not handle a Chicago winter. If your current system is at the end of its life and you are weighing options, a heat pump installation is worth a direct comparison against a straight furnace-and-AC replacement. We also service and repair existing heat pumps. A tune-up is a good time to find out what a system needs, whether that means a refrigerant check, a defrost-cycle inspection, or a conversation about whether the unit is still the right fit for the house.
An oversized AC that short-cycles can hit the temperature setpoint without running long enough to pull meaningful moisture out of the air. The result is a house that reads 72 degrees on the thermostat but still feels clammy, with condensation on windows and a faint musty smell in rooms that do not get much airflow. A whole-home dehumidifier integrates with the existing HVAC system and runs independently of the cooling cycle, which is something a portable unit cannot do. We look at the cause of an uneven house actually investigated before recommending equipment, because the fix for a humidity problem that comes from duct leaks is different from one that comes from an undersized or oversized system.
Whether this is your first HVAC repair or your tenth, a no-heat call in January or a no-cool call in August is not the time to wait. We take urgent calls seven days a week from 6:30 AM to 9:30 PM. That covers furnaces that will not turn on, furnaces blowing cold air, ACs blowing warm air, and systems that have gone completely quiet. It also covers the calls that need immediate attention for safety reasons: a burning smell from the furnace, a sulfur or rotten-egg odor near gas equipment, or any concern about carbon monoxide. If you smell something that does not belong, call right away and step outside while you do it.
Other calls that come in as emergencies include water pooling near the furnace or air handler, rattling or banging from the equipment during a cycle, and energy bills that have jumped without an obvious reason. A system that runs constantly or short-cycles is working harder than it should, and the longer it runs that way, the more stress it puts on components that are already under load. We scope the problem on the call, confirm what the diagnostic visit covers, and get someone out to look at it. One call is all it takes to get it looked at.
Making comfort simple is most of what the job is, whether the property is a single-family home, a rental unit, an apartment building, or a commercial space. Homeowners call us for repairs, replacements, and seasonal tune-ups. Landlords and property managers call when a tenant has no heat or no cool and the system needs to be assessed and fixed quickly. Commercial property owners call when rooftop units, split systems, or building HVAC equipment needs service or replacement. The diagnostic and pricing process is the same regardless of property type: we scope the job, confirm the price, and schedule the work. We will look at the system and tell you what it needs.
From a quick tune-up to a whole-system replacement, the diagnosis comes first, and the price follows from what the diagnosis finds. When you call, we go through the symptoms with you, give you a sense of what the visit covers, and confirm the rate before anything is scheduled. Repair cost and replacement cost are two different conversations, and we do not push one direction or the other before we have looked at the equipment. If you have already received a replacement quote and want a second look, that is a straightforward call to make.
The diagnostic visit covers a physical inspection of the system, identification of the fault or the wear pattern driving the problem, and a price for the recommended repair or replacement scope. We treat your home and its system the way we would our own, which means we look at what is actually wrong before recommending what to do about it. Pick up the phone and we'll get started.
We serve Palatine and the communities around it across Cook County and the northwest suburbs. That includes Arlington Heights, Rolling Meadows, Mount Prospect, Schaumburg, Hoffman Estates, Inverness, Buffalo Grove, and Barrington. If you are in the area and need heating or cooling service, call for a quote and we will confirm coverage and scheduling on the call.
A furnace that short-cycles, produces uneven heat across the house, takes longer than usual to reach the set temperature, or makes new noises during startup or shutdown is showing signs of wear. A heat exchanger concern is a more serious finding, and a burning smell or any odor that does not belong near the equipment warrants a call right away. If the furnace is running but the house is not warming the way it should, that is worth having looked at before the coldest stretch of winter arrives. Call and describe what the system is doing and we will scope the diagnostic.
An air conditioner that runs without dropping the temperature is often dealing with a refrigerant issue, a fouled condenser coil, or a blower problem that is reducing airflow across the evaporator. In some cases, the system is undersized for the load it is being asked to carry, or duct leaks are losing conditioned air before it reaches the rooms. The diagnostic visit checks each of these possibilities before a repair is recommended, because the fix depends on the actual cause. We will look at the system and tell you what it needs.
At the air handler, the visit covers the blower motor and wheel condition, the evaporator coil, the filter and filter housing, the drain pan and condensate line, and the control board and wiring connections. On the heating side, the heat exchanger, ignition components, and gas valve operation are also part of the inspection. Airflow measurements are taken when the situation calls for it, because a blower that is moving too little air affects both comfort and equipment life. The findings are explained before any repair is recommended.
Banging on startup typically points to a loose or broken component inside the blower or the furnace cabinet. Squealing often comes from a worn blower motor bearing or a belt-drive issue on older equipment. Rattling during operation can indicate a loose panel, a failing inducer motor, or debris in the ductwork. None of these noises resolve on their own, and running a system with a mechanical fault puts additional stress on components that are already under load. Call and describe the sound and we will scope the diagnostic from there.
When repair costs are stacking up on aging equipment, when the system can no longer hold temperature on the coldest or hottest days, or when the efficiency gap between the existing unit and current equipment is significant, replacement often makes more financial sense than another repair. We assess the full system before recommending anything, and we explain the repair-versus-replacement math in plain terms so you can make the call. Second opinions on replacement quotes are welcomed. If another contractor has told you the system needs to go, call us and we will look at it.
A diagnostic and repair visit for a single component fault, like a failed capacitor or a clogged condensate line, typically takes one to two hours. A seasonal tune-up runs in a similar range. A full system replacement is a longer job and the timeline is confirmed when the scope is priced on the call. If the repair requires a part that needs to be ordered, the initial visit covers the diagnostic and the return visit covers the repair once the part is in.
Clear a path to the furnace or air handler, the outdoor condenser unit, and any registers or return vents that are part of the complaint. If the attic or crawl space contains ductwork that needs to be inspected, make sure that access point is reachable. Pets should be secured away from the work area. If you will not be home, let us know when you call and we will go over the access plan so the visit can proceed without delay.
A frozen coil usually shows up as weak or no airflow from the vents, with the system running but not cooling. Ice may be visible on the refrigerant lines near the air handler or on the coil itself if the access panel is removed. The most common causes are restricted airflow from a clogged filter or a blower fault, and low refrigerant from a leak. Running the system with a frozen coil can damage the compressor, so the right move is to shut the cooling off and call. We will scope the diagnostic and confirm what the visit covers.
When a thermostat is not reading temperature correctly, not communicating with the air handler, or not switching between heating and cooling modes, the fix is sometimes the thermostat itself and sometimes a wiring issue behind it. We check the control and the wiring as part of the diagnostic before recommending a replacement. If a new thermostat is the right call, we confirm compatibility with the existing system, install it, and walk through the settings before the visit is complete.
Yes, when leaking ducts are the cause. A duct system that is losing conditioned air into wall cavities or the attic will leave rooms at the far end of the run too hot in summer and too cold in winter, and the system will run longer than it should trying to compensate. Duct sealing addresses the leak directly, and the improvement in airflow and comfort is usually noticeable. We check static pressure and duct condition before recommending sealing, because the fix for a duct problem is different from the fix for an undersized system or a blower fault.
Palatine HVAC Company is available seven days a week from 6:30 AM to 9:30 PM.
Call (224) 539-2898 to get a quote, schedule a diagnostic visit, or ask about a second opinion on a replacement.
Know the price. Know what the visit covers. Know what comes next.
From a furnace that quit overnight to an AC that can't keep up through a Chicago-area summer, we handle the full range of residential and commercial heating and cooling work in Palatine and across Cook County. Every visit starts with a diagnosis, and the price is confirmed before any work is scheduled. The table below covers what each service includes, who it fits, and what is useful to know before you call.
| Service Type | What It Covers | When You Need It | What to Keep in Mind |
|---|---|---|---|
| Thermostat & Smart-Control Installation |
| Anyone upgrading from a manual thermostat or replacing a unit that is not communicating correctly | A thermostat that reads temperature incorrectly or fails to switch modes is sometimes a wiring issue rather than the thermostat itself. We check both before recommending a replacement. |
| Ductwork Repair & Sealing |
| Homes with uneven temperatures or rooms that never reach the set temperature | Duct leaks that lose conditioned air into wall cavities or the attic force the system to run longer than it should. Sealing addresses the leak directly rather than masking the symptom. |
| Whole-Home Dehumidification & Humidity Control |
| Homes that feel clammy or show condensation even when the AC is running | An oversized AC that short cycles can hit the temperature setpoint without pulling meaningful moisture from the air. The fix depends on whether the cause is the equipment size, a duct issue, or both. |
| Heating & Furnace Repair |
| Anyone with a furnace blowing cold air, short cycling, or not turning on | A furnace that short cycles or struggles to hold temperature in January is showing wear that tends to get worse the longer it runs that way. |
| Emergency HVAC Service |
| Anyone with a system that has stopped working entirely or is showing a safety concern | We take urgent calls seven days a week from 6:30 AM to 9:30 PM. A burning smell, a sulfur odor near gas equipment, or any carbon monoxide concern warrants a call right away. |
| Heat Pump Repair & Service |
| Homes with an existing heat pump that is not heating or cooling correctly | Defrost cycle faults are commonly misread as compressor failures. Diagnosis before quoting parts matters more on heat pumps than on almost any other equipment. |
| Seasonal Maintenance & Tune-Ups |
| Homeowners who want to catch wear before it becomes a repair call | A tune-up is a good time to find out what a system needs before the heaviest heating or cooling demand of the season arrives. It also gives you a clear picture of how much life the equipment has left. |
| Heat Pump Installation |
| Homeowners replacing aging equipment and weighing a heat pump against a furnace-and-AC setup | Cold-climate heat pump models now carry ratings for sub-zero performance, which changes the comparison for Palatine-area homes that once ruled them out for winter use. |
| Indoor Air Quality & Air Filtration |
| Households concerned about dust, allergens, or air quality in a tightly sealed home | Filtration upgrades work with the existing system and do not require separate equipment. The right filter type depends on the blower capacity, so we check that before recommending a product. |
| Full System Installation & ReplacementMost Popular |
| Homeowners whose system is at end of life or no longer keeping up with the load | Second opinions on replacement quotes are welcomed. If another contractor has recommended replacement, call us and we will look at the system before you commit. |
| AC Repair & Service |
| Homeowners with an AC that won't cool, runs constantly, or has stopped working | Cooling problems often show up on the hottest days when the system is under the most load. Early diagnosis prevents a small fault from becoming a compressor failure. |
How often should I schedule a maintenance tune-up for my heating and cooling system?
Once a year is the minimum for most systems, and twice a year is better if you are running both heating and cooling heavily. A pre-season check before the first cold stretch and another before the first hot stretch gives you the best chance of catching wear before it becomes a no-heat or no-cool call. If the system is older or has had repairs in the past year, a tune-up also gives us a clearer picture of how much life the equipment has left.
How do I know whether to repair or replace my HVAC system?
The short answer is that repair makes sense when the cost is modest relative to the equipment's age and condition, and replacement makes sense when repair costs are stacking up, the system can no longer hold temperature on the coldest or hottest days, or the efficiency gap between the existing unit and current equipment is significant. We assess the full system before recommending anything and explain the comparison in plain terms. If you have already received a replacement quote and want a second look, that is a straightforward call to make.
What causes a system to short cycle, and why does it matter?
Short cycling means the system starts, runs briefly, shuts off, and starts again before the space reaches the set temperature. It can come from an oversized system that satisfies the thermostat too quickly, a refrigerant problem, a dirty coil or filter restricting airflow, or a control board fault. It matters because a system that short cycles puts repeated stress on the compressor and other components during startup, which is when they are under the most load. Running that way long enough shortens the life of equipment that might otherwise have had years left.
System Checked Before Parts Are Quoted
We work through the likely causes before recommending a repair, because replacing a component that was not the actual problem does not fix anything. The diagnostic comes first, and the price follows from what it finds.
Why is one room in my house consistently hotter or colder than the rest?
Uneven temperatures across a house usually come from one of a few causes: duct leaks losing conditioned air before it reaches the far end of the run, a blower that is not moving enough air, a damper issue in the duct system, or a room that has a higher load than the system was sized to handle. We look at the cause before recommending a fix, because sealing ducts and adjusting airflow are different jobs from resizing equipment.
What are the signs of a refrigerant or airflow problem in a cooling system?
A refrigerant problem often shows up as an AC that runs continuously without dropping the temperature, ice on the refrigerant lines near the air handler, or warm air coming from the vents when the system is running. An airflow problem typically shows up as weak airflow at the registers, a coil that freezes over, or uneven cooling across the house. Both can look similar from the thermostat, which is why the diagnostic matters before parts are quoted.
How do ductwork leaks affect my energy bills?
A duct system that leaks conditioned air into wall cavities, the attic, or unconditioned spaces is effectively paying to heat or cool areas that do not need it. The system runs longer to compensate, which shows up as higher energy bills and more wear on the equipment. In a climate like Palatine's, where the heating and cooling seasons are both long and demanding, the cumulative effect of a leaking duct system over a full year is significant. Sealing the leaks addresses the problem at the source.
Emergency No-Heat and No-Cool Calls Handled
We take urgent heating and cooling calls seven days a week from 6:30 AM to 9:30 PM. If the heat goes out in January or the AC stops in August, call and we will scope the problem on the call and get someone out to look at it.
Is it worth upgrading to a smart thermostat, and what does the process involve?
A smart thermostat can improve comfort and reduce runtime by learning patterns and adjusting the schedule automatically, but the benefit depends on having a system that communicates correctly with the control. We check compatibility with the existing equipment before recommending a model, install and wire the new thermostat, and walk through the settings before the visit is complete. If the existing wiring does not support the thermostat you want, we will tell you that on the diagnostic rather than after the fact.
How does a dirty filter or coil affect system performance?
A clogged filter restricts airflow across the evaporator coil, which reduces the system's ability to transfer heat and can cause the coil to freeze over. A fouled condenser coil on the outdoor unit makes it harder for the system to shed heat, which raises the head pressure and puts extra load on the compressor. Both problems force the system to work harder to do less, and both are caught during a standard tune-up or diagnostic visit.
Diagnosis Explained Before Any Repair
After the inspection, we go over the findings with you before any work is scheduled. You know what the system needs, what the repair or replacement covers, and what it costs before you commit to anything.
Do I need to be home when the technician comes out?
You do not have to be there, but it helps to have someone present who can describe what the system has been doing and point out any areas of concern. If you will not be home, let us know when you call and we will go over the access plan so the visit can move forward without delay. For a full system replacement or a job that involves the attic or crawl space, having someone available to answer questions during the visit is worth arranging if you can.
How are emergency no-heat and no-cool calls handled?
When you call about a system that has stopped working entirely, we go through the symptoms with you on the call to understand what the system is doing and confirm what the diagnostic visit covers. Urgent calls are taken seven days a week from 6:30 AM to 9:30 PM. If the call involves a safety concern, such as a burning smell, a sulfur or rotten-egg odor near gas equipment, or a carbon monoxide concern, step outside and call right away. We treat those calls differently from a standard no-cool call.
What does a seasonal tune-up actually cover?
A tune-up covers a physical inspection of the system, cleaning of the components that accumulate dirt and restrict performance, a check of refrigerant charge and airflow, and a review of the ignition system, heat exchanger, and controls on the heating side. Airflow measurements are taken when the situation calls for it. The findings are reviewed with you after the visit, so you leave the appointment knowing the condition of the system and whether anything needs attention before the season gets underway.
Call us at (224) 539-2898 to get a quote, schedule a diagnostic visit, or ask about a second opinion on a replacement. We are available seven days a week from 6:30 AM to 9:30 PM.
(224) 539-2898