AC Not Cooling in Montebello? We Fix It Today

Name: Green Air Conditioning Service
Address: 823 W Whittier Blvd Ste 204, Montebello, CA, 90640, US
Telephone: (213) 758-0889
Price range: $$
Rating: 4.8

Your AC is running but the house is still hot. We find and fix the reason — fast.

Same-Day Fix All Causes Diagnosed 24/7 Available

Call (213) 758-0889 All HVAC Services

If your AC is running but not cooling your Montebello home, the most common causes are low refrigerant, dirty condenser or evaporator coils, a failed compressor or capacitor, restricted airflow from a clogged filter, or a thermostat problem. Our technicians diagnose the specific cause and repair it — typically in a single visit.

New to Green Air Conditioning Service? Here's how our service works.

The Problem

Why Your AC Runs But Doesn't Cool

An AC that runs without cooling is wasting energy and making the problem worse. In Montebello's heat, every hour without proper cooling drives indoor temperatures higher. The most common cause is low refrigerant from a slow leak — the system runs but can't produce enough cooling. Dirty coils block heat transfer. A failing compressor can't compress refrigerant effectively. Each of these gets worse the longer it runs.

Our Solution

How We Diagnose and Fix Poor Cooling

We check refrigerant pressures, inspect and test the compressor, examine both coils for dirt and damage, measure airflow at every register, test the capacitor and contactor, and verify thermostat operation. Once we identify the cause, we fix it and verify the system produces the correct temperature split (typically 15-20°F across the evaporator coil).

How It Works

Getting Your Cooling Back

Temperature and Airflow Check

We measure supply and return temperatures and airflow at each register to quantify the cooling deficit.

System Diagnosis

Refrigerant pressures, electrical tests, coil inspection, and mechanical checks isolate the cause.

Targeted Repair

We fix the specific problem — recharge refrigerant, clean coils, replace a capacitor, or repair the compressor.

Cooling Verification

We verify proper temperature split and airflow to confirm the fix.

AC Not Cooling? Call Now

We'll find out why and fix it today. Call (213) 758-0889.

Call (213) 758-0889

Warning Signs

Symptoms of an AC Not Cooling Properly

Warm or lukewarm air from the vents while the system runs
Some rooms cool while others stay hot — airflow imbalance
AC runs continuously without reaching the thermostat setpoint
Ice on the refrigerant lines — usually a low-charge or airflow problem
The outdoor unit fan is spinning but the compressor is silent

Common Questions

FAQ — AC Not Cooling

Low refrigerant from a slow leak is the #1 cause. The system runs but doesn't have enough refrigerant to transfer heat effectively.

Yes. A severely clogged filter restricts airflow over the evaporator coil, causing it to freeze. The ice blocks all cooling. Changing the filter and thawing the coil often restores cooling.

It depends on the cause — could be a simple filter issue or something more involved. We diagnose the problem first, then give you an upfront price before any work begins.

Get Your AC Cooling Again — Call (213) 758-0889

Diagnosis and same-day repair in Montebello. Upfront pricing on every fix.

Call (213) 758-0889

Related AC Repair Services

Central AC Repair Refrigerant Leak Repair Compressor Repair Condenser Repair Evaporator Coil Repair Thermostat Repair All AC Repair Services

AC Not Cooling Across the San Gabriel Valley

We provide ac not cooling in Montebello and every neighboring community we serve.

Serving Montebello, CA and the greater San Gabriel Valley. Green Air Conditioning Service — licensed, insured HVAC professionals available 24/7. Find us on Google Maps. Rated 4.8/5 from 27 reviews.

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