Need AC repair in Newberg, OR? A summer day with the AC out in Yamhill County is a different problem than it was a decade ago. With Newberg recent triple-digit summers, an inoperative air conditioner stops being an inconvenience and starts being a real cooling-safety issue — especially in homes with seniors, young kids, or anyone with cardiovascular concerns. The good news: nearly every AC repair we handle across Newberg comes down to one of eight specific causes, and three of them you can fix yourself in under an hour with a $20 filter and a multimeter.
Below is the exact order our techs work through when a Newberg homeowner calls us for air conditioner repair. Whether it is a central split system, a heat pump, a mini-split, or a window unit — these eight failures cover almost every call we run across Yamhill County during cooling season.
⚡ Quick triage — do these in the next 5 minutes
Before you call anyone, check these four things. They account for roughly 35% of “my AC is broken” calls we get from Newberg, Dundee, and Sherwood during heat waves:
- Is the thermostat set to “Cool”? Every season we get calls where someone has the thermostat on “Fan” or “Heat” by accident.
- Is the breaker tripped? Central AC has two breakers — one in the main panel, one in the outdoor disconnect by the condenser unit. Both have to be on.
- When did you last change the air filter? If it has been more than 60 days, replace it before anything else. A clogged filter causes about 25% of summer service calls.
- Is the outdoor condenser unit clear of debris? Cottonwood fluff, leaves, and grass clippings can choke airflow to the coils. Hose it off gently from above.
1. AC will not turn on
You set the thermostat to cool, but nothing happens. No fan, no compressor click, no movement of air. Three suspects in order:
- Tripped breaker or blown disconnect fuse. Check both. The outdoor disconnect (a small grey or black box on the wall next to the condenser) has either a pull-out fuse or a switch that can fail.
- Dead thermostat batteries. Surprisingly common on older programmable thermostats. New batteries: $5.
- Failed capacitor. The single most common AC failure we see in Newberg. A capacitor stores the electrical kick that starts the compressor and fan motor. When it fails, the system tries to start but cannot. New capacitor: $30–$80 part, 30-minute swap.
Total cost in Newberg: $140–$280 if it is a capacitor or contactor; up to $480 if the control board has failed.
2. AC running but not cooling
The fan runs, you can hear the compressor, but the air coming out of the vents is not cold. Four possibilities, in order of likelihood:
- Filthy air filter. A heavily restricted filter starves the evaporator coil of warm air, drops the coil temperature below freezing, and ices the whole system.
- Low refrigerant (leak). AC systems do not use up refrigerant — if you are low, you have a leak somewhere. EPA-certified leak detection and refrigerant recharge is a tech job. $400–$900 depending on leak location.
- Dirty condenser coil. The outdoor unit coil collects dust and pollen over the year. Hose it off gently with a garden hose (no pressure washer — you will bend the fins).
- Failed reversing valve (heat pumps only). Heat pumps switch between heating and cooling via a valve. When it sticks, the system runs but in the wrong direction.
3. Frozen evaporator coil
You open the air handler in the attic or garage and find the evaporator coil encased in ice. Or you see ice on the refrigerant lines running from the indoor unit to the outdoor condenser. Almost always one of two things:
- Restricted airflow (dirty filter, blocked return vents, failing blower motor, closed dampers). The fix is removing the restriction.
- Low refrigerant. Lower-than-spec pressure causes the coil to drop below freezing in normal operation.
Quick fix: Turn the AC off completely (set thermostat to “Off,” not “Fan”) and let the ice melt fully — usually 3-6 hours. Put towels under any drain pans. Then restart and see if you have solved the airflow issue. If it re-freezes within a day, call us.
⚠️ Never run a frozen AC
Running the compressor against a frozen coil is the fastest way to destroy a $1,500–$3,000 compressor. If you see ice anywhere on the indoor coil or refrigerant lines, shut the system off at the thermostat immediately and call us before turning it back on.
4. AC leaking water inside the house
Water dripping from the indoor air handler or ceiling near the unit. Two suspects:
- Clogged condensate drain line. The AC removes humidity from your indoor air; that water drains out through a thin PVC line. When the line clogs with algae and dust (every 2-4 years on a typical Newberg system), water backs up and overflows the drain pan. DIY fix: use a wet/dry vac on the outdoor end of the drain line to suck out the clog.
- Cracked or rusted condensate pan. The pan under the coil has corroded through. Replacement pan: $40–$80 part, $120 install.
If you have a secondary safety pan with a float switch (most newer Newberg installs do), the float will shut off the AC automatically when the primary drain backs up. That is by design — it is protecting your drywall and ceiling.
5. AC blowing warm air from vents
The system runs, vents have airflow, but the air is room-temperature or warm. Most often:
- Outdoor unit is not running. Walk outside and listen. If the indoor handler is running but the outdoor condenser is silent, you have a power or capacitor problem at the condenser (back to cause #1).
- Refrigerant low. The air handler is moving air across the indoor coil but the system cannot transfer heat outside. Tech-only diagnosis.
- Thermostat set to “Fan” instead of “Cool.” Sounds basic, but worth re-checking before paying for a service call.
- Air duct leakage. On older Newberg homes with attic ductwork, leaky ducts dump cold air into the attic instead of into the rooms.
“During a Newberg heat wave we run 3–4 same-day AC calls a day. The single thing every one of those callers wishes they had done six months earlier: a $20 filter change and a spring tune-up.”
— Jordan Keene, Lead Technician
6. Strange noises from AC
AC systems should hum — they should not screech, bang, or buzz loudly. What you hear tells you what is wrong:
- Clicking that does not lead to start-up. Almost always a failing capacitor or contactor.
- Loud hum / buzz from the outdoor unit. Capacitor or compressor electrical issue.
- Screech or squeal. Worn fan motor bearings. Catch it early before the motor seizes.
- Bang or rattle at startup. Loose hardware in the cabinet, debris in the fan, or refrigerant slugging the compressor.
- Hiss. Refrigerant leak. Get it diagnosed before refrigerant continues to escape.
7. AC short cycling (turns on and off too frequently)
The system runs for a few minutes, shuts off, runs again, shuts off — and the house never gets to temperature. Short cycling is hard on the compressor and a clear sign something is wrong:
- Thermostat in a bad location. If the thermostat is in direct sunlight or near a heat-producing appliance, it reads warmer than the rest of the house, cycling the AC needlessly.
- Oversized AC unit. Common in older Newberg homes that got an oversized replacement. The system cools too fast, satisfies the thermostat, and shuts off before properly dehumidifying.
- Refrigerant overcharge. Previous service charged too much refrigerant; system trips on high-pressure protection.
- Failing control board. Less common, but worth diagnosing if everything else checks out.
8. Bad smell from vents
A sudden bad smell when the AC runs:
- Musty / mildew smell: Mold growing on the evaporator coil or in the drain pan. Tech-cleanable, but recurring issues mean the drain pan needs replacement.
- Burning electrical smell: Turn the AC off at the thermostat AND the breaker, immediately. Do not restart. Call us — this is the fault profile for a motor or wiring failure that can start a fire.
- Dead-animal smell: Sadly common. Mice and small rodents get into ductwork and outdoor units. Tech cleanup required.
Newberg, OR AC repair cost summary — 2026
What each fix typically runs at PAS and most reputable Yamhill County HVAC shops. Labor included; prices reflect summer-season pricing in Newberg, Dundee, Dayton, and surrounding addresses.
| Cause | Typical cost | DIY-friendly? |
|---|---|---|
| Filter change | $15–$40 | Yes — 5 min |
| Thermostat batteries / reset | $5–$80 | Yes — 5 min |
| Condensate drain clear | $120–$220 | Sometimes |
| Capacitor replacement | $160–$280 | Tech recommended |
| Contactor replacement | $180–$320 | Tech recommended |
| Condenser fan motor | $340–$620 | Tech only |
| Refrigerant leak + recharge | $400–$900 | Tech only — EPA cert required |
| Thermostat replacement (smart) | $240–$420 | Sometimes |
| Control board replacement | $420–$780 | Tech only |
| Compressor replacement | $1,500–$3,000+ | Tech only |
Prices reflect typical jobs at independent HVAC companies serving Newberg and Yamhill County. PAS charges a $100 diagnostic fee that is waived when you approve the repair. EPA Section 608 certified for all refrigerant work.
When to call a pro vs. DIY
- Call a tech for anything involving refrigerant (EPA 608 certified handler required by law), any electrical work at the disconnect or inside the air handler, any frozen coil that returns after defrost, and anything with a burning smell.
- Try yourself for filter changes, thermostat battery swaps, clearing the outdoor unit of debris, and condensate drain clean-outs with a wet/dry vac. Watch a model-specific video first — Trane, Lennox, Carrier, Goodman, and ductless mini-split brands all have different service procedures.
Notes specific to Newberg and Yamhill County
- Newberg hot summers are new. A lot of homes here have AC systems sized for the climate of 10 years ago. If your system runs constantly during heat waves and never reaches setpoint, it is likely undersized — replacement with a properly-sized heat pump is often the right answer.
- Cottonwood and pollen. Spring and early summer dump enormous amounts of cottonwood fluff and pollen across Yamhill County. Outdoor condenser coils get smothered fast. Hose them off monthly during cooling season.
- Older farmhouses. Many properties out toward Dundee Hills and Ribbon Ridge have ductless mini-splits added to homes that were never designed for central AC. Mini-splits have a different failure profile — almost all of them are around the indoor blower wheel, drain line, or outdoor unit electrical.
- Heat pumps doing double duty. An increasing fraction of Newberg installs are heat pumps that handle both heating and cooling. We service these year-round and recommend the spring-and-fall PM cadence rather than once-a-year.
Need same-day AC repair in Newberg?
During heat waves we prioritize AC dispatches. EPA-certified for refrigerant work, capacitors and contactors in the truck, same-day diagnostic across Newberg, Dundee, and Sherwood. $100 diagnostic — waived when you book the repair.
Frequently asked questions — Newberg AC repair
Do you service all of Newberg and the surrounding area?
Yes. We service Newberg, Dundee, Dayton, Lafayette, Carlton, Yamhill, and the rural addresses across Yamhill County. During heat waves we prioritize AC calls — most bookings before noon get same-day service.
How much does AC repair cost in Newberg?
Most AC repairs in Newberg land between $160 and $620 all-in. Capacitors, contactors, and condensate drains sit in the lower half. Fan motors and refrigerant work run higher. Compressor swaps are the only repair where we routinely tell people replacement may be smarter — those start at $1,500. The $100 diagnostic fee is waived when you approve the repair.
Are you EPA Section 608 certified for refrigerant work?
Yes — all our HVAC technicians hold current EPA Section 608 universal certifications. We can legally handle leak detection, recovery, evacuation, and recharge on R-410A, R-22 (legacy systems), and the newer A2L refrigerants like R-454B now appearing in code-compliant new installs.
Should I repair or replace my old AC unit?
Rule of thumb: if your AC is 12+ years old and the repair is more than 50% of replacement cost, replace. If it is a sealed-system repair (compressor, evaporator coil) on a 10+ year R-22 system, replace. Otherwise repair. We quote both numbers honestly — repair and full system replacement — so you can decide.
Do you offer spring tune-ups?
Yes. Annual spring tune-ups cover refrigerant pressure check, electrical tightening, coil cleaning, drain clean, filter replacement, and a complete operational test. We recommend scheduling these in April or early May before the summer rush — by the first heat wave we are booked solid.
Can you install a heat pump or mini-split in my Newberg home?
Yes — we install ductless mini-splits, ducted heat pump systems, and traditional split-system AC. Most Newberg homes without central AC are great candidates for a 2-zone or 3-zone mini-split system. We provide free in-home estimates and can quote multiple system options.
Looking for service in another city or for a different appliance? See our Newberg dryer repair, refrigerator repair, washer repair, and dishwasher repair guides, our main AC repair page, or our full list of locations.
Lead Tech · 12 yrs · EPA 608 certified. HVAC and appliance specialist.