Clemmons HVAC Company handles the full range of heating and cooling work for homes, rental properties, commercial buildings, and everything in between. Whether a furnace has stopped producing heat, an AC is running but not cooling, or a system has reached the end of its useful life, we scope the job on the phone and get the right work scheduled. We serve Clemmons and the wider Forsyth County area, and we take calls every day from 5:30 AM to 9:00 PM.
Call (743) 223-5935 for a quote.
We know this area. We know these systems. Sizing matched to the home.
Dealing with a furnace that won't keep up or an AC that can't cool? The first step is a proper diagnosis, not a parts order. Refrigerant, airflow and controls all checked before a verdict, so the repair addresses the actual fault rather than a guess at it.
The symptoms that send people our way cover a lot of ground: short cycling, rooms that won't reach the set temperature, a system that runs constantly without hitting the thermostat target, strange noises from the air handler or outdoor unit, warm air coming from vents when the AC is on, or cold air when the furnace is running. None of those is a single-cause problem, and a proper check covers the full system rather than the obvious component first.
We handle repair calls for residential customers and for commercial and rental-property accounts across Forsyth County. A property manager dealing with a unit that has lost cooling gets the same diagnostic process as a homeowner with a furnace fault. Leave the heating and cooling to us.
When an AC is running but not cooling, the fault can sit in the refrigerant circuit, the condenser, the compressor, the evaporator coil, or the airflow path. A refrigerant leak, for example, shows up as a slow loss of cooling capacity rather than a sudden failure, and it requires finding and fixing the leak before any refrigerant work makes sense. The visit covers a full inspection of the condenser and compressor, a refrigerant check, and an airflow diagnosis so the repair targets what is actually wrong.
Furnace faults tend to cluster around ignition, heat exchanger condition, and airflow restriction. A furnace that starts and then shuts off quickly is often a safety-response to one of those three. We also handle boiler and hydronic radiant space-heating systems, which keep living spaces warm through a different method but share the same diagnostic logic: find the fault, confirm the cause, repair it. We stay on the heating side of that work and do not touch the domestic water side of a system.
Heat pumps are well suited to Forsyth County's mixed seasons, and they come with their own fault patterns. A reversing valve that sticks leaves the system heating when it should be cooling, or the reverse. A refrigerant circuit issue affects both modes. A defrost cycle that fails causes ice buildup on the outdoor unit in cold weather. We check each of those components as part of a heat pump service call rather than assuming the problem is refrigerant alone.
When a repair no longer makes economic sense, or when a system simply can't be brought back to working condition, replacement is the right path. We handle full system installations and replacements for homes, multi-unit properties, and commercial buildings.
Sizing matters here more than most people realize. A unit that is too large for the space short-cycles and leaves humidity behind. A unit that is too small runs constantly without reaching the set temperature. We size to the actual load of the building rather than matching the footprint of the old unit, which is not always the right fit. Mini-split and ductless systems are an installation option where adding ductwork is not practical, and they work well for additions, converted spaces, and commercial areas that need independent temperature control. Permits are handled where the job needs them. We're one phone call from getting your comfort right.
Forsyth County runs through all four seasons, and the heating and cooling demands here reflect that. Hot, humid summers and cold winters with mixed precipitation mean the equipment needs to perform reliably at both ends of the range. The services below come up regularly in this area for specific reasons tied to the local climate.
A furnace and central AC pairing is still the most common setup in Forsyth County homes, and full system replacement is a regular part of the work we do here. The decision to replace rather than repair usually comes down to three factors: the age of the equipment, whether it still uses a refrigerant type that is being phased out, or a pattern of repeated faults that signals the system has reached its limit. When replacement is the right call, we size the new equipment to the home's actual heating and cooling load, not just the capacity of whatever came out.
North Carolina sits in one of the strongest heat pump adoption zones in the country, and Forsyth County's winters are mild enough that a heat pump handles most heating loads efficiently without constant auxiliary heat. We install both ducted heat pump systems and ductless mini-splits, depending on what the space calls for. The installation includes the low-voltage control wiring that connects the unit to the thermostat and the control board.
Clemmons summers bring the kind of humidity that makes a properly cooled home feel damp anyway. Excess moisture in the air forces the AC to run longer than it should, raises energy bills, and creates comfort problems that a thermostat adjustment alone cannot fix. A whole-home dehumidifier connects to the air handler and pulls moisture out of the air as it circulates, rather than relying on the AC to do that job as a side effect. High indoor humidity often shows up during a routine HVAC inspection before a homeowner has identified it as the source of the problem.
System tuned. Airflow balanced. Home comfortable.
A seasonal tune-up catches small faults before they become repair calls, and it keeps the system running at the efficiency it was designed for. Seasonal maintenance is scheduled around your calendar, so the work gets done before peak heating or cooling demand, not during it.
A thermostat that is not reading the space correctly, or that cannot hold a schedule, costs money on every cycle. Smart thermostat installation gives better control over comfort and energy use, and zoning systems let different areas of a building run on independent schedules. We handle the installation and the low-voltage wiring that connects the control to the equipment.
Leaking ductwork is one of the more common causes of uneven temperatures and unexplained spikes in energy bills. Air that escapes into an unconditioned attic or crawl space never reaches the rooms it was meant to serve. Duct inspection, sealing, and repair bring that air back where it belongs.
Air filtration and purification systems connect to the existing HVAC equipment and address what a standard filter does not catch. During Forsyth County's allergy season, and in homes where humidity already stresses the system, upgrading the filtration is a straightforward improvement to daily comfort.
Systems around here run into the same few faults, and some of them cannot wait. No heat in the middle of a cold stretch, no cooling during a Forsyth County summer heat wave, or a system that has shut down entirely are all calls we take on short notice.
We take emergency calls every day from 5:30 AM to 9:00 PM. We keep you informed from diagnosis to final test, so you know what was found, what the repair involves, and what was confirmed working before the visit ends. Pick up the phone and we'll get started.
Know the price. Know what the visit covers. Know what comes next.
The job gets scoped on the call rather than on the driveway. When you call for a quote, you get a price before anything is scheduled, and you get a clear answer about what the visit covers. Ask before the visit starts and the rate you were given is the one being worked from. Ask what it covers and you get a straight answer.
We serve residential customers, commercial accounts, and rental-property owners throughout Clemmons, Forsyth County, and the surrounding communities. Whether the property is a single-family home, a multi-unit rental, or a commercial building, the work is handled the same way.
We cover the area including:
The visit starts with the technician who comes out reviewing what you described on the call and then running a full system check. That covers refrigerant pressure, airflow through the system, and the condition of controls and electrical components on the unit before any repair decision is made. Once the fault is identified, the repair is explained and priced before work begins. The visit ends with a system test to confirm the fix is holding.
Common signs include warm air from the vents when the system is running, the unit cycling on and off more frequently than usual, a noticeable drop in airflow from registers, or the system running continuously without reaching the thermostat target. Ice forming on the evaporator coil or the refrigerant lines is another indicator that something is wrong with the refrigerant circuit or airflow. Any of these symptoms is worth a diagnostic call before the system fails completely during a Forsyth County heat stretch.
An AC that runs without cooling usually has a refrigerant issue, a dirty evaporator or condenser coil, an airflow restriction, or a compressor problem. A refrigerant leak, for example, reduces the system's ability to transfer heat gradually, so the unit keeps running but cannot reach the set temperature. A full diagnostic checks all of those components rather than defaulting to a refrigerant recharge, because adding refrigerant to a leaking system without finding the leak does not solve the underlying problem.
A furnace that short-cycles, produces uneven heat across the home, makes banging or rattling noises during startup, or emits a burning smell on the first cold run of the season is showing signs of a developing fault. A unit that is producing heat but cannot hold the thermostat target may have a heat exchanger issue, a blower problem, or an airflow restriction. These symptoms are worth a diagnostic call before the system fails on a cold Forsyth County night.
Banging or clanking usually points to a loose or failing mechanical component inside the air handler or outdoor unit. Squealing often indicates a belt or motor bearing issue. Rattling can mean debris in the system or a loose panel. None of these resolve on their own, and running a system through a fault that is producing noise risks turning a minor repair into a larger one. A diagnostic visit identifies the source before the fault progresses.
No heat during a cold stretch, no cooling during a Forsyth County summer heat wave, or a system that has shut down entirely and will not restart are all emergency situations. If the system is making a smell that suggests burning or electrical fault, turn it off at the thermostat and call us. We take short-notice calls every day from 5:30 AM to 9:00 PM, and the job gets scoped on the phone so the technician who comes out knows what to expect.
If the system has shut down, set the thermostat to off rather than repeatedly cycling it in an attempt to restart it. In a no-heat situation, use space heaters in occupied rooms if available and keep interior doors closed to retain warmth. In a no-cooling situation during summer, close blinds on sun-facing windows and limit appliance use that generates heat. When you call us, describe what the system was doing before it stopped so we can scope the fault on the phone before the visit.
A heat pump moves heat rather than generating it, which allows one system to handle both heating and cooling by reversing the direction of the refrigerant circuit. In summer it pulls heat out of the indoor air and releases it outside. In winter it extracts heat from the outdoor air and moves it inside. Installation includes setting the outdoor unit, connecting the air handler or indoor unit, and running the low-voltage control wiring that links the equipment to the thermostat. Forsyth County's winters are mild enough that a heat pump handles most heating loads efficiently without constant backup heat.
A whole-home dehumidifier connects to the air handler and pulls moisture from the air as it circulates through the system, maintaining indoor humidity at a set level regardless of how often the AC is running. In Clemmons, summer humidity regularly pushes indoor moisture levels high enough to make a properly cooled home feel damp and uncomfortable. A central air conditioner removes some moisture as a byproduct of cooling, but it is not designed to control humidity independently. If the home feels clammy even when the thermostat is satisfied, a whole-home dehumidifier is usually the right call.
Ducts that leak allow conditioned air to escape into unconditioned spaces like attics and crawl spaces before it reaches the rooms it was meant to serve. The system compensates by running longer, which raises energy bills without improving comfort. Undersized ducts restrict airflow and create pressure imbalances that result in some rooms being harder to heat or cool than others. Sealing and rebalancing the duct system brings the airflow back in line with what the equipment was designed to deliver.
A duct sealing visit starts with an inspection of the duct system to identify where air is escaping and where flow is restricted. Accessible leaks are sealed with appropriate materials, and airflow is rebalanced across the system after sealing is complete. The time involved depends on the size of the duct system and how extensive the leakage is. Most duct sealing jobs on a standard residential system are completed in a single visit.
Efficiency loss in aging systems usually comes from a combination of factors: refrigerant charge that has drifted over time, coils that have accumulated fouling, worn motor components that draw more power, and ductwork that has developed leaks. A system that was efficient at installation can lose meaningful capacity over years of operation without a single dramatic failure. A diagnostic visit can identify whether the efficiency loss is addressable through maintenance and repair or whether the system has reached the point where replacement makes more financial sense.
Permits are handled where the job needs them, and that is part of the conversation on the call before anything is scheduled. If your installation or replacement requires a permit, we confirm that up front so there are no gaps in the process. The work is done to the standard that local inspectors here enforce, and we do not consider the job complete until it passes what the permit requires.
The decision to replace rather than repair comes down to the age of the equipment, the nature and cost of the fault, and whether the system is still using a refrigerant type that is being phased out. When replacement is the right call, the new equipment is sized to the actual heating and cooling load of the home rather than matched to the footprint of the old unit. We walk through the options on the call and confirm the price before the installation is scheduled.
Clemmons HVAC Company takes calls every day from 5:30 AM to 9:00 PM.
Whether you need a repair diagnosed, a system replaced, or a seasonal tune-up scheduled before the next season hits, call (743) 223-5935 and we'll get the job scoped and a price confirmed.
We know this area. We know these systems. Sizing matched to the home.
From a furnace that will not light to an AC that runs all day without cooling the house, the work we handle covers the full range of heating and cooling needs for Clemmons homes and Forsyth County businesses. The table below lays out each service, what it covers, and who it fits best. Call for a quote and we will scope the job on the phone before anything is scheduled.
| System Service | What's Included | When You Need It | Helpful Details |
|---|---|---|---|
| Heating & Furnace Repair | Ignition and heat exchanger check, Blower and airflow diagnosis, Boiler and hydronic system repair | Any property that has lost heat or is getting uneven warmth | Short cycling is often a safety response to an ignition or airflow fault, not a thermostat problem. |
| Emergency HVAC Service | No-heat and no-cool calls, System-down diagnosis, Short-notice scheduling | Situations where the system has failed entirely and waiting is not an option | We take emergency calls every day from 5:30 AM to 9:00 PM. The fault gets scoped on the phone before the visit. |
| Indoor Air Quality & Air Filtration | Filtration system installation, Purifier connection to existing equipment, Humidity and air quality assessment | Households dealing with allergy season, excess dust, or elevated indoor humidity | During Forsyth County allergy season, upgrading filtration is one of the more straightforward comfort improvements available. |
| Thermostat & Smart-Control Installation | Smart thermostat installation, Low-voltage wiring connection, Zoning and schedule setup | Homeowners who want better control over comfort and energy use without replacing the whole system | A thermostat that misreads the space costs money on every cycle. Upgrading the control is often a fast fix. |
| Heat Pump Installation | Ducted and ductless mini-split options, Low-voltage control wiring, Outdoor and indoor unit placement | Forsyth County homes looking for one system to handle both heating and cooling efficiently | North Carolina winters are mild enough that a heat pump handles most heating loads without constant backup heat. |
| Seasonal Maintenance & Tune-Ups | Full system inspection, Refrigerant, airflow and controls checked, Filter and coil condition assessed | Any property that wants to catch small faults before they become repair calls | Maintenance scheduled before peak heating or cooling demand catches problems when the stakes are lower. |
| Full System Installation & Replacement | Load calculation and proper sizing, Full equipment installation, Permits handled where required, System test before job close | Homes or buildings where repair no longer makes financial sense or the equipment has reached its limit | Matching the old unit's capacity is not always right. We size to the actual load of the space. |
| Ductwork Repair & Sealing | Duct leak inspection, Sealing and rebalancing, Airflow verification after repair | Homes with uneven temperatures or unexplained spikes in energy bills | Air escaping into an unconditioned attic or crawl space never reaches the rooms it was meant to serve. |
| Heat Pump Repair & Service | Reversing valve inspection, Refrigerant circuit check, Defrost cycle diagnosis | Forsyth County homes running a heat pump year-round for both heating and cooling | A stuck reversing valve can leave the system heating when it should cool, or the reverse. It is a common fault here. |
| Whole-Home Dehumidification & Humidity Control | Dehumidifier connected to air handler, Humidity level set and calibrated, Moisture diagnosis during inspection | Clemmons homes that feel damp or clammy even when the AC is keeping up with temperature | A central AC removes some moisture as a side effect of cooling but is not designed to control humidity on its own. |
| AC Repair & Service | Refrigerant circuit diagnosis, Condenser and compressor inspection, Airflow and coil check | Homes or businesses with an AC running but not cooling | A refrigerant leak shows up gradually, not all at once. Finding the leak comes before any refrigerant work. |
How often should a home HVAC system be tuned up?
Most systems benefit from a tune-up once a year at minimum. A home with both a furnace and a central AC is often better served by two visits, one before the cooling season and one before heating season. Regular maintenance keeps the system running at the efficiency it was designed for and gives us a chance to catch developing faults before they turn into repair calls during a heat wave or a cold stretch.
How do I know whether to repair or replace my HVAC system?
The decision usually comes down to three things: the age of the equipment, the cost of the repair relative to the value of the system, and whether the system is still using a refrigerant type that is being phased out. A system that is repeatedly faulting, running inefficiently, or requiring a repair that costs more than a third of a replacement is often better replaced. We walk through that on the call so you have the information before anything is scheduled.
What are the signs of a refrigerant or airflow problem in my AC?
A refrigerant problem usually shows up as a slow loss of cooling capacity. The system keeps running but cannot reach the thermostat target, and in some cases ice forms on the evaporator coil or the refrigerant lines. An airflow problem shows up differently: reduced output from registers, some rooms getting much less air than others, or the system running longer than it should to cover the space. Both need a proper diagnostic check before any parts are ordered or refrigerant is added.
System Checked Before Parts Are Quoted
Refrigerant, airflow and controls are all checked before we call a verdict. The repair addresses the actual fault, not the first component that looks suspicious.
What does a seasonal HVAC tune-up actually cover?
A tune-up covers the components that affect efficiency and reliability most directly: refrigerant charge, airflow through the system, coil condition, control and electrical connections on the unit, and filter condition. The goal is to confirm the system is operating within its designed parameters and to catch anything that has drifted out of range before it becomes a fault. We run through the full check rather than a visual inspection and a filter swap.
Why is one room in my home hotter or colder than the rest?
Uneven temperatures across a home usually point to one of a few causes: duct leakage that is losing conditioned air before it reaches certain rooms, an airflow imbalance in the duct system, a return air problem that is starving part of the house, or a thermostat that is reading the space incorrectly. In some cases the equipment is undersized for the load. A proper diagnosis looks at the whole system rather than just the room that is uncomfortable.
How does a dirty filter or coil affect HVAC performance?
A clogged filter restricts airflow through the system, which forces the blower to work harder and reduces the volume of air reaching the coil. A dirty evaporator coil cannot transfer heat efficiently, which means the system runs longer to do the same amount of cooling or heating. Over time, both problems raise energy bills and put additional strain on the compressor and blower motor. Checking filter and coil condition is part of every maintenance visit we do.
Code-Compliant Work on Every Job
Permits are handled where the job needs them, and the work is done to the standard local inspectors here enforce. We confirm what applies at your address before anything is scheduled.
When does it make sense to upgrade to a smart thermostat?
A smart thermostat is worth considering any time the current control is not holding a schedule reliably, is misreading the room temperature, or is simply too old to communicate with newer equipment. The upgrade gives better visibility into how the system is running and allows scheduling that matches how the home is actually used. We handle the installation and the low-voltage wiring connection so the new control works with the existing equipment from day one.
What causes a system to short-cycle?
Short cycling, where the system starts, runs briefly, and shuts off before completing a full heating or cooling cycle, usually has one of a few causes. An oversized system will cool or heat the space too quickly and shut off before humidity is managed or the air is fully circulated. A refrigerant fault, a dirty coil, or an airflow restriction can trigger safety shutoffs that look like short cycling. A failing compressor can also cause it. The right fix depends on which of those is actually driving the behavior, which is why a full diagnostic matters before any repair.
Straightforward Scheduling
Seasonal maintenance gets scheduled around your calendar so the tune-up happens before peak demand, not during it. Call and we will find a time that works.
Is older equipment worth repairing or is replacement usually the better call?
Age alone does not settle it. A well-maintained system that develops a straightforward fault is often worth repairing. A system that is aging, using a refrigerant type being phased out, and developing repeated faults is usually not. The crossover point depends on the cost of the specific repair, what the system would need over the next few years, and what a properly sized replacement would cost. We lay out both options on the call so the decision is yours to make with full information.
What does a thermostat or smart-control upgrade involve for the equipment already in place?
Most smart thermostat installations involve swapping the existing control at the wall, connecting the low-voltage wiring that runs between the thermostat and the air handler or furnace, and confirming that the new control communicates correctly with the equipment. Some older systems require a common wire added to the wiring run for the new thermostat to operate. We check compatibility on the call and confirm what the installation involves before anything is scheduled.
How does indoor humidity affect how comfortable a home feels even when the AC is running?
High indoor humidity makes a cooled space feel warmer than the thermostat reads because the body relies on evaporation to shed heat. When the air is already saturated with moisture, that process slows down. The result is a home that feels damp and uncomfortable even when the AC is keeping up with temperature. A whole-home dehumidifier addresses that directly by pulling moisture from the air as it circulates through the system, independent of how often the AC is running.
Every job is different, and the best way to get a straight answer about your system is to call us directly. We will scope the work on the phone and give you a price before anything is scheduled. Call (743) 223-5935 any day from 5:30 AM to 9:00 PM.
(743) 223-5935