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223 Curtis Street, Delaware, OH 43015

Car AC & Heating Repair
in Delaware, Ohio

Car AC & Heating Repair in Delaware, Ohio

Your car’s climate controls look like one system from the driver’s seat. They are actually two, sharing a blower motor and a dashboard. Air conditioning runs on refrigerant in a sealed loop. Heat comes from the engine’s coolant, routed through a small radiator behind your dash called the heater core. Which one has failed changes the diagnosis completely, and it is the first thing we sort out.

We cover both sides in-house: AC recharge and refrigerant service, leak detection, compressors, condensers, evaporators, blower motors and resistors, heater cores, thermostats, blend doors, climate-control modules, and defrosters. ASE-certified technicians, up-front pricing, and Wendell’s Garage has been doing it on Curtis Street since 1986.

  • No cold air

    Refrigerant side

    Usually one of:

    • A refrigerant leak — the most common cause by far
    • A failed compressor, or a clutch that will not engage
    • A condenser blocked with road debris or damaged by a stone
    • An expansion valve or orifice tube restricting flow
    • An electrical fault in the controls or a pressure switch

  • No heat

    Coolant side

    Usually one of:

    • Low coolant, which means a leak somewhere
    • A thermostat stuck open, so the engine never warms up
    • A heater core clogged with debris or corrosion
    • A blend door actuator that will not move the flap

The first two on the heat side are engine cooling system problems that show up as a comfort complaint — and an engine that never warms up is also an engine that is not running efficiently.

Signs Your AC or Heater Needs Service

  • AC that blows cool but not cold, or was fine last summer and is not this one
  • AC that works while you are moving and goes warm at a stoplight — often a condenser fan or airflow problem
  • Heat that never gets hot, or takes most of the drive to arrive
  • Weak airflow at every fan speed, which is a clogged cabin air filter far more often than anything expensive
  • The blower works on high only — a classic failed blower resistor, and a small repair
  • A musty smell for the first minute after you switch the AC on
  • A sweet, syrupy smell inside the cabin, a greasy film on the inside of the windshield, or a damp passenger-side floor — together, that is a leaking heater core
  • Windows that fog and will not clear, even with the defroster running hard
  • Squealing, grinding, or a heavy clunk when the AC switches on
  • Oily residue around AC fittings or hoses, which is where refrigerant leaks leave a mark
  • A defroster that cannot keep up on a cold or rainy morning — a safety issue, not just a comfort one
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Why Bring AC & Heating Work to Wendell’s

  • We find the leak before we add refrigerant. A recharge with no repair is a service you buy again next season. Dye, an electronic leak detector, and pressure testing find where it is going, and then it gets fixed.
  • Both systems, one shop. AC is refrigerant, heat is coolant, and the heat side runs straight into engine cooling. Because we do all of it, “no heat” gets diagnosed properly instead of handed off.
  • Evacuate and recharge, done to spec. The system is pulled into a vacuum to remove air and moisture, checked to confirm it holds, and refilled by weight with the correct refrigerant and oil — then verified at the vent with a thermometer.
  • We check the cheap things first. Cabin filter, blower resistor, coolant level, a blocked condenser. Sometimes the answer to weak airflow is a twenty-dollar filter, and you should hear that before anything else.
  • Nationwide NAPA warranty. As a NAPA AutoCare shop, your parts and labor are covered by the nationwide NAPA warranty.
  • ASE-certified technicians, up-front pricing. The estimate comes before the work. Climate repairs range from minor to major, and you will know which one you have before anything is ordered.
  • Family-owned in Delaware since 1986. Same shop on Curtis Street, now part of the Alpha Automotive family of shops.

Frequently Asked Questions

My AC is blowing warm. Do I just need a recharge?

Maybe, but “just a recharge” is not really a thing. Refrigerant lives in a sealed loop and is not used up the way fuel or oil is, so a system that is low has a leak — at an O-ring, a hose, a shaft seal, the condenser, or the evaporator. Refilling it without finding that leak works for a few weeks and then you are back. We find it first, and often it is an inexpensive seal.

Are the recharge cans from the parts store okay to use?

We would steer you away from them, and the reason is not the refrigerant. Most of those cans include stop-leak sealant, which is designed to harden on contact with air — including inside the recovery machine a shop connects to your car. Many shops test for sealant now and turn the vehicle away if they find it. The cans also overfill easily, and an overcharged system cools worse than a slightly low one while straining the compressor. If you have already used one, just tell us when you come in.

Why is AC service more expensive on my newer car?

Because of what is in it. Most vehicles built from the mid-2010s onward switched from R-134a to a refrigerant called R-1234yf, which is far better for the environment and much more expensive per pound. It also needs its own recovery and charging equipment. If your car takes R-1234yf, that alone explains most of the difference in the quote. The sticker under your hood says which one you have.

The AC is cold on the highway but warm at a red light.

That is a classic, and it points at airflow across the condenser rather than at the refrigerant. On the highway, the car pushes air through the condenser and everything works. Stopped, that job belongs to the cooling fan — so a fan that is not coming on, or a condenser packed with leaves, bugs, and road grit, produces exactly this symptom. Both are usually straightforward fixes.

My heater blows cold. Where do I start?

Check your coolant level first, with the engine cold. Low coolant is the most common cause, and the heater core sits high in the system, so it runs dry before anything else does. If the level is fine, the usual suspects are a thermostat stuck open, a clogged heater core, or a blend door actuator that has stopped moving. One tell for the actuator: a clicking or knocking from behind the dash when you change the temperature. Low coolant means a leak somewhere, which is an engine cooling system question too.

Why do my vents smell musty when I turn on the AC?

The evaporator behind your dash gets cold, condensation forms on it, and that dark, damp space is a good home for mildew. It is most noticeable in the first thirty seconds after you start the car. A new cabin air filter and an AC system cleaning usually clear it. One habit that helps: turn the AC off but leave the fan running for the last minute or two of your drive so the evaporator dries out.

My windshield fogs up and there is a sweet smell in the car.

Those two together, especially with a greasy film on the inside of the glass or a damp passenger-side carpet, are the signature of a leaking heater core. It is engine coolant misting into the cabin. It should be fixed, both because you are breathing it and because that coolant is leaving the engine’s cooling system. Fair warning: the heater core usually sits behind the dashboard, so the part is modest and the labor is not.

The airflow is weak even on the highest setting.

Start with the cabin air filter. It is meant to be replaced about once a year, most people have never touched theirs, and a filter packed with leaves and dust chokes the whole system. If the filter is clean, the next suspects are the blower motor or a blocked intake. If the fan works only on the highest setting and nothing lower, that is a failed blower resistor — common, and not expensive.

When is the best time to get the AC looked at?

Spring, before you need it. The first hot week of the year fills every shop in Delaware County with AC work, and that is also when parts get hard to find. A system that was weak last August will not have healed over the winter. The same goes for heat in the fall — the first cold snap brings its own rush.

Is AC and heating work covered by a warranty?

Yes. As a NAPA AutoCare shop, your parts and labor are covered by the nationwide NAPA warranty, so the coverage goes with you, not just when you are in Delaware. Ask us and we will go over the details for your repair.

How long will it take?

Diagnosis with leak detection is usually one to two hours, though a slow leak sometimes needs dye and a second visit to find. Evacuate and recharge takes about an hour once the repair is done. A compressor or condenser is generally a half day. A heater core is the long one — often a full day or more, because the dashboard has to come apart to reach it. We give you a time estimate up front.

Do I need an appointment?

It helps, especially in the seasonal rushes. Request a time or call (740) 362-0818. If your defroster cannot clear the windshield, say so — that is a visibility problem, not a comfort problem, and we treat it that way.

We handle car AC and heating repair for drivers across Delaware and Delaware County — Sunbury, Galena, Ostrander, Radnor, Prospect, Waldo, Richwood, and Marysville. Work van or motorhome with a climate problem? See our fleet and commercial van and RV and motorhome pages. Everything else we do is on our auto repair services page.

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