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AC Not Cooling Enough
in Boca Raton, FL
When your AC blows air but the house stays hot, something is stealing its ability to move heat outside. In Boca Raton, where humidity stays above 70 percent most of the year, a struggling system does not just make you uncomfortable — it stops pulling moisture out of the air too. Left alone, the problem usually gets worse through July and August and can burn out the compressor.
Quick Answer
In Boca Raton, summers push outdoor temps past 95 degrees for months at a time, and most AC systems simply can't keep up if something is wrong inside them. Low refrigerant or a dirty evaporator coil are the two most common causes. A technician can check refrigerant levels and clean the coil in one visit. Call (561) 609-0418 if rooms feel warm even after the system has run for an hour.
Telltale Signs
Warning Signs to Watch For
- The thermostat is set to 72 but rooms stay at 80 or higher
- Air coming from the vents feels only slightly cool, not cold
- The system runs constantly without ever shutting off
- Humidity inside feels heavy even with the AC on
- Ice forms on the copper lines near the air handler
- Your electric bill jumps but the house is no cooler
Root Causes
What Causes AC Not Cooling Enough?
Low Refrigerant Charge
Refrigerant is the fluid that actually carries heat out of your home. When the level drops — usually because of a slow leak — the system cannot absorb enough heat indoors, so the air coming out of the vents is only mildly cool. In older Boca Raton homes built before 2000, many units still use R-22 refrigerant, which is no longer made and harder to source.
The Fix
Refrigerant Leak Repair and Recharge
A technician finds and seals the leak first, then adds the correct refrigerant to the system. Just adding refrigerant without fixing the leak means you will be in the same situation in a few months.
Dirty Evaporator Coil
The evaporator coil sits inside your air handler and absorbs heat from indoor air. In South Florida, the coil runs almost year-round, and fine dust builds up on it fast. A coated coil cannot absorb heat well, so the air passing over it stays warm.
The Fix
Evaporator Coil Cleaning
A technician removes the coil and cleans it with a chemical solution that dissolves the buildup. A clean coil can drop your indoor temperature by several degrees without any other changes.
Undersized AC Unit
An AC unit that is too small for the square footage it serves will run all day and never catch up. This is common in East Boca Raton neighborhoods where older homes have been expanded with additions but the original AC unit was never replaced with a larger one.
The Fix
Load Calculation and Unit Replacement
A technician performs a Manual J load calculation — a specific math-based test that figures out the right size unit for your home's square footage, insulation, and window exposure. Installing the correctly sized unit is the only fix that works long-term.
Self-Diagnosis
Which Cause Applies to You?
Check the signs you're observing to narrow down the likely root cause before your inspection.
| What You're Seeing | Low Refrigerant Charge | Dirty Evaporator Coil | Undersized AC Unit |
|---|---|---|---|
| Ice on the copper refrigerant lines near the air handler | |||
| Rooms far from the air handler are warmer than rooms close to it | |||
| System runs constantly and never reaches set temperature | |||
| Airflow from vents feels weak and barely cool | |||
| Technician finds refrigerant pressure below spec on gauges |
Free Inspection
Get a Diagnosis in Boca Raton
An on-site inspection is the only way to confirm which cause applies to your property. Free, no obligation.
(561) 609-0418Free on-site inspection
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Serving Boca Raton & surrounding areas
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