HVAC Services

When your air conditioner runs but fails to cool, the problem could be a refrigerant leak, a dirty filter, a frozen evaporator coil, or a malfunctioning compressor. An HVAC technician can diagnose the issue, recharge refrigerant if needed, and restore comfortable temperatures.

A furnace that won't heat can leave your home uncomfortably cold and even dangerous in winter. Common causes include a faulty igniter, a clogged filter, thermostat issues, or a gas supply problem. An HVAC technician can safely troubleshoot and repair your heating system.

Banging, squealing, rattling, or grinding sounds from your HVAC system often indicate a loose component, a worn belt, a failing motor bearing, or debris in the ductwork. Ignoring unusual noises can lead to costly breakdowns. An HVAC technician can pinpoint and fix the source before it worsens.

A malfunctioning thermostat can leave your home too hot, too cold, or cause your HVAC system to cycle erratically, driving up energy bills. The problem may stem from dead batteries, faulty wiring, or a failed sensor inside the unit. An HVAC technician can test the thermostat, recalibrate or replace it, and ensure your heating and cooling system responds correctly.

Water dripping from your air conditioning unit usually means the condensate drain line is clogged, the drip pan is cracked, or the evaporator coils are frozen. Left unaddressed, the leak can damage ceilings, walls, and flooring, and promote mold growth. An HVAC professional can clear the drain, repair the pan, and check refrigerant levels to stop the leak and prevent costly water damage.

When some rooms are too hot while others are freezing, the problem usually lies in your HVAC ductwork, insulation, or system sizing. Common causes include blocked or leaking ducts, closed or misadjusted dampers, insufficient insulation in certain walls or attic areas, or an HVAC system that's too small for the space. An HVAC technician can perform a duct inspection, check airflow at each register, and recommend solutions like duct sealing, damper adjustment, or adding a zoning system.

A musty or mildew smell blowing from AC vents usually signals mold or bacteria growing inside the HVAC system — on the evaporator coil, in the drain pan, within ductwork, or on a clogged air filter. Beyond being unpleasant, airborne mold spores can aggravate allergies, asthma, and respiratory conditions. An HVAC technician can inspect the system, clean the evaporator coil and drain pan, treat ductwork, and identify root causes like poor drainage or inadequate dehumidification.

Persistent condensation, fog, or ice forming on the interior surfaces of windows during cold weather signals excessive indoor humidity. While occasional light condensation is normal, heavy or daily moisture on windows can cause wood frame rot, peeling paint, mold growth on sills and surrounding walls, and even damage to the wall cavity insulation. The root causes are usually inadequate ventilation, an oversized humidifier, bathroom or kitchen fans that aren't ducted outside, or a home that's been sealed too tightly without balanced air exchange. An HVAC technician can measure indoor humidity levels, inspect ventilation systems, and recommend solutions like balanced ventilation, dehumidifiers, or heat recovery ventilators.

Short cycling is when an air conditioner turns on, runs for only a few minutes (instead of the normal 15–20 minute cycle), shuts off, and then restarts shortly after — repeating this pattern continuously. This puts enormous stress on the compressor, which is the most expensive component to replace ($1,500–$3,000). Each startup draws a surge of electricity, so short cycling can increase energy bills by 20–40%. Common causes include a dirty or clogged air filter restricting airflow, low refrigerant from a leak, an oversized AC unit for the space, a malfunctioning thermostat reading incorrect temperatures, frozen evaporator coils, or an overheating compressor with a failing motor. An HVAC technician can diagnose the root cause, check refrigerant levels, clean evaporator and condenser coils, verify thermostat calibration, and inspect electrical components. Ignoring short cycling dramatically shortens the system's lifespan — a well-maintained AC lasts 15–20 years, but chronic short cycling can cut that to 7–10 years.

When your furnace runs but only pushes cold or lukewarm air through the vents, the problem usually lies with the pilot light, flame sensor, gas valve, or a clogged air filter that triggers a safety shutdown. A certified HVAC technician can diagnose the root cause and restore heat, often in a single visit.

Ice forming on your air conditioner's evaporator coil or refrigerant lines signals restricted airflow or a refrigerant issue. Running a frozen unit can damage the compressor — the most expensive component. An HVAC technician can safely thaw the system, find the cause (dirty filter, low refrigerant, or a failing blower), and prevent repeat freeze-ups.

Sweating ductwork occurs when warm, humid air contacts cold duct surfaces, creating moisture that can drip onto ceilings, insulation, and framing. Left unchecked, duct condensation leads to water stains, mold growth, and damaged insulation. An HVAC technician can insulate ducts, seal leaks, and adjust humidity levels to eliminate the problem.

When your air conditioner runs but only blows warm or room-temperature air, the most common culprits are a dirty air filter restricting airflow, low refrigerant from a leak, a frozen evaporator coil, a failed compressor, or an incorrect thermostat setting. A clogged filter is the easiest DIY fix — replace it and wait 3–4 hours for a frozen coil to thaw. If the problem persists, the system likely has a refrigerant leak or a component failure that requires a certified HVAC technician. Refrigerant leaks require EPA-certified handling, and recharging without fixing the leak is both illegal and wasteful. Diagnosis costs $75–$200; common repairs range from $150 (capacitor) to $1,500+ (compressor replacement).

Leaking ductwork is one of the most under-diagnosed home comfort problems. The average home loses 20–30% of conditioned air through duct leaks, gaps, and poor connections — essentially paying to heat or cool your attic, crawlspace, or walls instead of your living space. Symptoms include rooms that are always too hot or too cold despite the HVAC running, excessive dust throughout the house (ducts pull in attic or crawlspace air through leaks), higher-than-expected energy bills, and the HVAC system running longer cycles to reach the thermostat setting. Common leak points are joints where duct sections connect (especially flex duct to rigid metal), boot connections where ducts meet floor or ceiling registers, return-air plenums, and anywhere duct tape (which dries out and fails within 2–5 years) was used instead of mastic sealant. An HVAC technician can perform a duct blaster test to measure total leakage, then seal joints with mastic or metallic tape and insulate exposed duct runs. Sealing costs $500–$2,000 for a typical home and often reduces energy bills by 15–25%, paying for itself within 1–3 years.

A carbon monoxide (CO) alarm going off is a life-safety emergency that should never be ignored. Carbon monoxide is an odorless, colorless gas produced by incomplete combustion in furnaces, water heaters, gas stoves, fireplaces, and attached-garage vehicles. At low concentrations it causes headaches, dizziness, and nausea; at high levels it is fatal within minutes. If your CO detector sounds, evacuate everyone — including pets — immediately, call 911 from outside, and do not re-enter until the fire department clears the home. Common sources include a cracked heat exchanger in the furnace, a blocked or disconnected flue pipe, a malfunctioning gas water heater, or backdrafting caused by negative house pressure. After the immediate danger is resolved, an HVAC technician should perform a combustion safety inspection of every gas appliance. A heat-exchanger inspection runs $80–$150; if the exchanger is cracked, replacement costs $600–$1,500 or a full furnace replacement may be recommended ($3,000–$7,000). Flue pipe repair or reconnection typically costs $150–$400. Annual furnace maintenance ($80–$150 per visit) is the best prevention — the technician checks for CO at every burner and verifies proper venting. Install CO detectors on every level and near sleeping areas; replace units every 5–7 years.

An AC refrigerant leak means your system is losing the chemical that absorbs heat, causing it to blow warm air, run constantly, and drive up energy bills. Refrigerant doesn't get 'used up' — if levels are low, there's a leak. Only an EPA-certified HVAC technician can legally locate, repair, and recharge the system.

When the outdoor AC unit hums, clicks, or stays completely silent while the indoor fan blows warm air, the compressor likely isn't starting. Common causes include a failed capacitor, a burned-out compressor motor, a tripped high-pressure switch, or low refrigerant levels. The compressor is the most expensive component in the system — running a failing one can cause total unit failure. An HVAC technician can diagnose whether the fix is a $150 capacitor swap or a compressor replacement that may justify upgrading the entire system.

A basement that stays noticeably colder than the rest of the house or has persistent drafts usually points to insulation gaps, air leaks around the rim joist, unsealed foundation cracks, or inadequate HVAC duct coverage. An HVAC technician can assess duct routing and airflow, while a handyman or insulation contractor can seal air leaks and add insulation.

Rattling, popping, or booming sounds from HVAC ductwork are usually caused by thin sheet metal expanding and contracting as heated or cooled air passes through. While not always dangerous, the noise can indicate undersized ducts, loose connections, a clogged filter creating excessive pressure, or poor duct support. An HVAC technician can identify the cause, reinforce or resize problem sections, and seal joints to eliminate noise and improve efficiency.

Ice forming on the outdoor heat pump unit or indoor evaporator coil during summer cooling is a clear sign something is wrong — the system is overcooling the refrigerant below the freezing point of condensation on the coils. The most common cause is restricted airflow: a dirty air filter, blocked return vents, or a failed blower motor. Low refrigerant charge (from a leak) is the second most common cause — less refrigerant means lower coil temperature and ice buildup. Other causes include a stuck or failed defrost board (on reversing models), a dirty evaporator coil, or a malfunctioning thermostatic expansion valve (TXV). An HVAC technician checks refrigerant charge, inspects the filter and coil, measures superheat and subcooling, and fixes the root cause. Running a frozen system damages the compressor — turn it off and let it thaw before a technician arrives.

A furnace that starts, runs for only a few minutes, shuts off, and restarts repeatedly is short-cycling. This wastes energy, strains the blower motor and heat exchanger, and leaves the house underheated. Common causes are a dirty air filter restricting airflow, an overheating limit switch tripping, a malfunctioning flame sensor, a thermostat placed near a heat source, or an oversized unit. An HVAC technician can diagnose the trigger, clean or replace the flame sensor, check the heat exchanger, and ensure proper airflow.

Water dripping from a bathroom exhaust vent is usually caused by condensation forming inside the duct when warm, moist bathroom air meets cold surfaces in the attic or exterior wall. An improperly insulated or excessively long duct run, a missing or stuck backdraft damper, or a duct that terminates inside the attic instead of outside all create conditions for condensation. In rare cases the drip signals a roof leak above the vent penetration. An HVAC technician can insulate the duct, replace the damper, reroute the vent to a proper exterior termination, and check for roof-related water intrusion.

The condenser fan on top of the outdoor AC unit is responsible for pulling air across the condenser coils to dissipate heat. When it stops spinning, the refrigerant inside the coils cannot release its heat, causing the system to blow warm air and the compressor to overheat — which can lead to costly compressor failure if the unit keeps running. Common causes include a burned-out fan motor, a failed capacitor that provides the motor's starting boost, a tripped thermal overload on the motor, or a defective contactor relay. An HVAC technician can test the capacitor and motor windings on-site, replace the faulty component, and verify that the compressor has not been damaged by the overheating episode.

A persistent musty or moldy odor that appears whenever the HVAC system kicks on is a clear sign that mold, mildew, or bacteria have colonized the ductwork, evaporator coil, or drip pan. Moisture naturally condenses on the cold evaporator coil during cooling cycles, and if the condensate drain is slow or the air filter is clogged, that damp environment becomes a breeding ground for microbial growth. Dirty ductwork lined with dust and organic debris provides additional nutrients for mold colonies to spread throughout the system, pushing spores into every room the vents serve. Beyond the unpleasant smell, airborne mold spores can trigger allergies, asthma flare-ups, and respiratory infections — especially in children and the elderly. An HVAC technician can inspect and clean the evaporator coil, flush the condensate drain line, sanitize the duct interiors, replace the air filter, and apply an antimicrobial coating to prevent regrowth.