400 CFM per ton
The airflow most AC systems need for each ton of cooling, which a weak blower can't deliver.
Services

Air Handler Repair & Installation
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An air handler does the heavy lifting of home comfort, pushing every bit of heated and cooled air through your ducts. When it leaks, hums, or barely blows, the cause is usually the blower, the drain, or the coil. KO HVAC repairs and installs air handlers across Kingston, PA, and most problems get fixed without a new unit.
Where your air handler sits matters, too. In older valley homes heated by radiators, central air got added later, with the air handler tucked in the attic. Summer heat and winter cold up there are hard on drains and motors, so those are the first things we check.

400 CFM per ton
The airflow most AC systems need for each ton of cooling, which a weak blower can't deliver.
Up to 20 gallons a day
The water a central AC can pull from humid summer air, enough to stain a ceiling when a drain clogs.
130°F and up
How hot an attic can get in summer, which strains the motors and ductwork running through it.
2 drain safeguards
A secondary pan or a float shutoff, which code calls for when an air handler sits above a finished ceiling.

An air handler sits out of sight, so its problems often show up somewhere else first. A ceiling stain, a weak vent, or a new sound is usually the first hint.
Air trickles out of the vents, even with the system running nonstop. A clogged filter, a dirty blower wheel, or a failing motor is the usual cause. Left alone, weak airflow can freeze the indoor coil in summer.
A brown ring shows up below an attic air handler, or water pools around a basement unit. A clogged drain line or a cracked drain pan sends condensation where it shouldn't go. Clearing the drain and checking the pan usually stops it.
The air smells stale or musty the moment the system starts. Standing water in the drain pan and a damp coil give mold a place to grow. Cleaning both and adding a UV cleaning system keeps it from coming back.
You hear a hum from the cabinet, but no air moves through the house. A failed capacitor or a seized blower motor is often behind it. Replacing that part usually restores airflow without replacing the air handler.
Frost forms on the indoor coil or the copper lines near the air handler. Low airflow or low refrigerant drops the coil below freezing. Turn the cooling off so it can thaw, then call.
The air handler is 15 years old or more, and the repairs keep adding up. Older units often run slower, less efficient motors inside rusting cabinets. A new air handler matched to your outdoor unit can improve both comfort and efficiency.

Most air handler repairs run about $150 to $650, and a full replacement typically runs about $1,500 to $3,500. The part, unit size, where it sits, the outdoor unit it pairs with, and duct changes move the price.
KO HVAC starts repairs with a $99 diagnostic, so you approve a flat-rate price before any work begins. Installs get an in-home visit and a written quote you approve first. New installs can qualify for 0% financing for 36 months, with approved credit.

An air handler and an outdoor unit work as a matched pair. A new outdoor unit paired with an old air handler can lose efficiency and comfort. We look at both, then price the repair and the replacement so you can decide.
| Repair usually makes sense | Replacement is worth pricing | |
|---|---|---|
| Unit age | Under about 15 years | 15 to 20 years or older |
| The problem | A blower motor, capacitor, drain, or filter issue | A leaking coil, rusted cabinet, or cracked pan on an old unit |
| Match with the outdoor unit | Still paired with the unit it was built for | The outdoor unit was replaced, or uses a newer refrigerant |
| Airflow and comfort | Strong again once repaired | Weak or uneven, even after repairs |
| Repair history | First problem in several years | Repeat repairs over the last few seasons |
| How it's priced | $99 diagnostic, then a flat-rate price | A written estimate after an in-home visit |

A new air handler rarely lines up perfectly with old ductwork. Our shop fabricates sheet-metal transitions in-house, so every connection fits tight. That means fewer leaks and more air reaching your rooms.
Air handlers above a finished ceiling get a secondary drain pan or a float switch that shuts the system off before water overflows. We route the drain line so it can't sag or freeze. That protects the rooms below for years.
Here's how a repair or installation runs, from the first call to the final test.
Step 1
Start With a Quick Call
Call or book online, and tell us about the airflow, leaks, noises, or smells. Let us know whether the unit sits in the attic, basement, or a closet.
Step 2
Cabinet, Coil, and Drain Checked
A technician inspects the blower, motor, coil, drain pan, and filter. For installs, we also measure the space and check the duct connections.
Step 3
Pick Repair or Replacement
You get a flat-rate repair price or a written install quote before any work starts. If both make sense, you'll see both side by side.
Step 4
Tested With the System Running
We finish the work, then test airflow and drainage with the system on. Before we leave, we clean up and show you where the filter goes.

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If the ceiling starts dripping at midnight, call anyway, because a person answers our line around the clock. From 8 to 5, the office gets you into the first open slot. After hours, maintenance plan members can get an emergency repair at an after-hours rate.
Turning the system off stops new condensation from filling the pan. If water is spreading, switch off the air handler's breaker too. Then set a bucket or towels under the drip.
Many attic units have a float switch that shuts the system down when the pan fills. If cooling suddenly stopped, a full pan may be why, so mention it when you call.
Our technicians service air handlers in the attics of older West Side homes and the basements of newer builds toward Dallas. Beyond the towns below, we cover homes throughout Luzerne, Lackawanna, and Wyoming Counties, within about an hour of Kingston.
Every home gets the same $99 diagnostic for repairs and a written quote for installs. The towns below are a starting point, and the full map reaches farther.
Luzerne County
Lackawanna County
Wyoming County

The technician Lenny they sent out was extremely professional, knowledgeable and clean. He assess the situation, determined tge issue got it fixed in no time. I highly recommend them
Anthony J.
Great service on our home’s system! The technician found a failing capacitor and replaced it same day. I appreciated the thorough troubleshooting and clear explanation of the repair. Very happy with the work and would definitely recommend them!
Jason R.
The man was excellent, he checked the whole system gave me advice and wasted no time , i would recommend your comp any to anyone, any time i need a tech i I’m calling you guys TY
Thomas H.
KO HVAC did a great job changing my house from electric heat to natural gas forced hot air with AC. Cody and his team were wonderful to work with. Highly recommended.
Aaron H.
It was a pleasure to work with KO hvac. From the moment of making the initial call and getting set up, to the day of service it was a very smooth process. The communication was on point which is always greatly appreciated. Thanks Len!
Steven S.
Caleb was punctual and very professional and knowledgeable. Thanks!
Matt B.
Great service. Will definitely have them do all my hvac needs.
Mary N.
Caleb was professional & knowledgeable of the issues I had with my furnace.
Ray B.
This is an extremely professional group who does excellent work. They replaced our entire HVAC system and later added additional duct work. Incredibly smooth process from start to finish. Communication was excellent. Their crew was on time, professional and courteous. Highly recommend.
Ed B.
Steve and Caleb both very knowledgeable and good to deal with. Had an issue finding a leak in the system and they were able to find the problem. HIGHLY recommend.
Karen N.
An air handler is the indoor cabinet that moves heated or cooled air through your ducts. It holds the blower, the indoor coil, and the filter. It pairs with an outdoor AC or heat pump, and some models have electric heat built in.
It depends on the unit's size, where it's installed, and the outdoor system it pairs with. Duct changes and attic access can add to the price. KO HVAC quotes every replacement in writing after an in-home visit, and new installs can qualify for 0% financing for 36 months.
A clogged condensate drain line is the most common cause. A cracked drain pan, a frozen coil that's melting, or a failed condensate pump can also send water out. Turn the system off, then call to have the drain cleared and checked.
Check it every month, and replace it when it looks gray. Most 1-inch filters last 1 to 3 months, while thicker media filters last longer. A clogged filter is one of the top causes of weak airflow and frozen coils.
Yes, and it's common in older homes that added central air without basement ductwork. An attic unit needs a secondary drain pan or float switch, a well-routed drain line, and sealed, insulated ducts. We plan all three before installing.
Ducted mini-splits do. A slim, hidden air handler feeds short duct runs, so you get zoned comfort without wall-mounted heads. KO HVAC installs Mitsubishi ducted systems as a Mitsubishi Electric Elite Diamond Contractor.
Most air handlers last about 15 to 20 years with regular filter changes and yearly maintenance. Attic units can wear faster because of extreme heat and cold. Past 15 years, it's worth pricing a replacement alongside any major repair.