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HVAC Tips

Small Symptoms, Big Repairs — Know the Difference

When you have a big air conditioning problem — like an AC that quits on the hottest day of summer — it goes without saying you'll call for service. Smaller problems are easier to ignore, but this is the last thing you should do. By calling as soon as you notice symptoms, you avoid the expense and inconvenience of a big repair job — and the higher utility bills that follow a poorly functioning system.

AC Symptom Checklist

Have Your Air Conditioning Checked If You Notice…

These are the seven warning signs the shop hears about most often on the service line. The severity tag tells you whether it can wait for a business-hours check-up or should be shut off right now.

Decreased airflow from the registers

What it means

Usually a clogged filter, a collapsed or disconnected duct, or a failing blower motor. On older systems it can also be a slipping belt.

What to do

Check and replace the return filter first. If flow is still weak, call — it's cheaper to fix a duct issue early than to run the compressor against high static pressure all summer.

Book a Check

Strange noises from the air conditioner

What it means

Grinding usually means bearings; buzzing usually means a contactor or capacitor; a hard metallic clank usually means a fan blade or compressor issue.

What to do

Turn the system off at the thermostat and call. Running a unit with a failed capacitor can burn the compressor windings — that's a $2,000+ mistake in 30 minutes.

Call Soon

Moldy odors from the ductwork when the AC is running

What it means

Standing water in the drain pan, a plugged condensate line, or biological growth on the evaporator coil — humidity's biggest gift to Kentucky homes.

What to do

Call for a coil cleaning + IAQ inspection. A UV light or CleanEffects™ air cleaner can prevent the regrowth so it doesn't come back every August.

Book a Check

The AC cycles on and off more frequently than it used to

What it means

Called “short cycling.” Common causes: low refrigerant charge, a failing thermostat, dirty condenser coil, or a system that was oversized to begin with.

What to do

Call — short cycling triples the wear on the compressor and drives your electric bill up 20-40%. Diagnosing it early usually means a repair, not a replacement.

Call Soon

The breaker for the AC keeps tripping (or the fuse keeps blowing)

What it means

The breaker is doing its job — something in the outdoor unit is drawing more current than it should. Usually a failing capacitor, a hard-starting compressor, or a shorted fan motor.

What to do

Do NOT keep resetting the breaker. Turn it off and call. Repeated tripping can weld the contacts and burn out the compressor.

Turn It Off

Ice appears on your AC or piping, inside or outside the house

What it means

Low refrigerant charge, a dirty evaporator coil, or a blower not moving enough air across the coil. Ice = the system is starving for heat exchange.

What to do

Turn the AC off at the thermostat, let the ice melt (2-4 hours), and call. Running a frozen unit will destroy the compressor.

Turn It Off

The outdoor fan won't come on

What it means

Failed fan motor, blown capacitor, or a wiring issue. If the compressor is running but the fan isn't, pressure is climbing fast inside the outdoor unit.

What to do

Turn the system off at the thermostat immediately and call. Running the compressor without the condenser fan can cook it in under an hour.

Turn It Off

If you notice any of the above symptoms, call us today to have your air conditioning checked and serviced to avoid larger problems down the road. We service all makes and models, whoever installed the original system. Emergency service is available until 10:00 PM.

Seasonal Playbook

What to Do When, in Kentucky

Laurel County runs the full HVAC calendar — humid summers, freezing winter mornings, and shoulder seasons that swing 40 degrees in a day. Here's the rhythm our service manager actually books.

Spring (Mar–May)

  • Book your cooling tune-up before Memorial Day — the schedule fills up as soon as temps climb.
  • Replace the return filter (1" filters every 30-60 days; 4" media filters every 6 months).
  • Hose off the outdoor unit's coil — pollen and cottonwood clog it in 2-3 weeks in KY.
  • Test the AC on a mild day. If it hasn't run since September, better to find issues in April than July.

Summer (Jun–Aug)

  • Keep the thermostat setback tight — 76-78°F when home, 80-82°F when away is a sweet spot in humid climates.
  • Change filters monthly during heavy runtime — humidity plus pet dander plus pollen loads them fast.
  • Check that the condensate drain line is flowing (a slow drip at the outdoor termination is normal; nothing means it's clogged).
  • Trim shrubs 2 feet back from the outdoor unit on all sides.

Fall (Sep–Nov)

  • Book your heating tune-up before Thanksgiving — heat exchanger inspection catches cracked/rusted parts before December.
  • Test the furnace on a mild day so problems are found in daylight, not at 2 AM.
  • Replace the batteries in wired-in CO detectors and smoke alarms (KY code: 10-year sealed units in new construction).
  • Seal the biggest air leaks (attic hatch, band joist, dryer vent) — it's the single cheapest upgrade you can make.

Winter (Dec–Feb)

  • Set the thermostat where you're comfortable and leave it — dramatic setbacks in a heat pump climate cost more than they save.
  • Keep the outdoor heat-pump coil clear of snow and ice (modern cold-climate heat pumps defrost automatically, but drifts can bury them).
  • Watch for cold spots — sudden drafts near a register usually mean a duct disconnected in the crawlspace.
  • If the furnace short-cycles when it's below 20°F, call — that's how a heat exchanger crack shows up before it becomes a CO risk.
Jan 27, 2009 · The Great Ice Storm. 2 in. of ice · 700,000 KY homes dark · Laurel County in the FEMA disaster zone · some rural feeders out for 3 weeks.

Are You Ready for the Next One?

The 2009 Test

It happens roughly once a decade in southeastern Kentucky — an ice storm big enough to darken the county for days. Answer five questions and we'll show you the weak link in your comfort setup before the next one finds it for you.

Kentucky ice-storm readiness check for your home HVAC

1 · Primary heat source

The system that carries most of the January load.

2 · What's your backup if the primary goes down?

Ice storms take the grid AND the primary system. Backup matters more than efficiency.

3 · Age of the primary heating system

Storms kill borderline equipment. Rough age is fine.

4 · Last professional heating tune-up

The tune-up finds the small failure before the storm turns it into a big one.

5 · Outdoor unit's condition (skip if gas/propane/wood only)

Kentucky ice loads onto outdoor units, snaps line sets, and unlevels pads.

Your 2009 Score

—

/ 100

Answer the questions to see your readiness

Very exposed Halfway Storm-ready

Pick an option in each of the five questions on the left. The verdict updates live — no form, no phone number required.

We've kept London warm through every ice storm since 1945. When yours won't, call — emergency service available until 10 PM, seven days a week.

Rule of Thumb

Call Us When…

  • Your system is more than 12 years old AND a single repair estimate is more than $500.
  • You're on the third service call in a season for the same issue.
  • Your utility bill jumped more than 20% year-over-year with the same weather.
  • You smell a burning or electrical odor (turn the system off first, then call).
  • The system runs but the house isn't cooling / heating.
  • You see water pooling around the indoor unit or dripping through a ceiling.
  • A room is 6+ degrees different from the thermostat's set point.
  • You're planning a renovation — get us involved before drywall goes back up.

Want More?

The Full Learning Center

Long-form Learn & Evaluate guides — heat pumps in Kentucky winters, SEER2 & HSPF2, dual-fuel, equipment efficiency, and honest rebate context. Symptom triage stays here on Tips.

Symptom Not on the List?

If your system is doing something weird and you're not sure what it means, call the shop and describe it. Our office staff can usually tell you in 30 seconds whether it's a schedule-a-check or turn-it-off-now situation.

  • Serving Laurel County since 1945
  • All Major Brands Serviced
  • Emergency service available until 10:00 PM
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Emergency service available until 10:00 PM