On-Site Diagnostic
Full pressure test and coil inspection before any repair starts.
Not Cooling Diagnostic
What Our Not-Cooling Diagnostic Covers
When an air conditioner runs continuously but never reaches the set temperature, the fault is rarely the thermostat itself. Our diagnostic call covers the whole refrigeration cycle, indoor filter and coil through to outdoor compressor and condenser, so the real cause is found and fixed in one visit.
- ✓Refrigerant pressure test to check for undercharge or a leak
- ✓Indoor evaporator coil inspection for ice, dust or damage
- ✓Filter and airflow check across the full indoor unit
- ✓Outdoor condenser clearance and airflow assessment
- ✓Compressor performance check under running load
- ✓Refrigerant leak detection, and repair where one is found
- ✓Refrigerant gas top-up or full refill to manufacturer specification
- ✓Thermostat and sensor diagnostic
- ✓Fan motor and capacitor test
- ✓Written explanation of the cause found
- ✓Fixed price quote before any repair work begins
Common Causes
Why Your AC Won't Cool
Six faults account for almost every not-cooling call we get in Valencia.
Low Refrigerant / Leak
Refrigerant runs low, usually from a slow leak at a joint or coil; a top-up alone won't last until the leak is sealed.
Dirty Filter Restricting Airflow
A clogged filter starves the coil of airflow, cutting cooling capacity and, left long enough, icing the coil over.
Frozen Evaporator Coil
Ice on the coil blocks airflow almost completely; it's usually a symptom of low refrigerant or restricted airflow, and running it iced can damage the compressor.
Undersized Unit For The Room
A unit rated below the room's cooling load runs constantly without ever reaching the set temperature, especially in south-facing or open-plan rooms.
Blocked or Overheating Outdoor Unit
The outdoor unit needs clear airflow to reject heat; boxed in, in direct sun with no clearance, or caked in dust, its efficiency drops sharply.
Faulty Thermostat or Sensor
A sensor reading the wrong temperature can stop the compressor before the room is actually cool; it feels identical to a refrigerant fault but is usually cheaper to fix.
Real Visits
What a Diagnostic Visit Looks Like
A quick look at how a typical not-cooling call-out runs, from first inspection to explanation.
Refrigerant Check & Refill
Leak detection followed by a refrigerant top-up to spec, if needed.
Plain-Language Explanation
We walk you through what's wrong and the fixed price before we touch anything.
Before You Call
Self-Check: Signs You Need a Repair Call
Run through these first — they speed up diagnosis, or confirm it's time to book a visit.
- ✓Air from the vents feels warm or barely cool even after 20-30 minutes running
- ✓The filter is visibly grey or clogged with dust when you check it
- ✓Ice or frost is visible on the indoor unit, coil or refrigerant pipes
- ✓The outdoor unit is surrounded by plants, boxes or debris blocking airflow
- ✓The unit short-cycles, switching on and off every few minutes
- ✓Airflow from the vents feels weak even though the fan sounds like it's running
- ✓The circuit breaker trips when the AC starts up
- ✓Water is pooling near the indoor unit instead of draining outside
Our Process
How We Diagnose & Fix It
From your first call to a cool room again, here's what to expect.
Call or WhatsApp
Describe the symptom, such as "runs but blows warm air," so we can prepare the right parts.
On-site diagnostic
Pressure test, coil inspection and electrical check, usually same day or next business day.
Written fixed quote
The cause explained in plain language, with the price confirmed before any work starts.
Repair carried out
Filter clean, gas refill, part replacement or electrical fix, usually completed the same visit.
Cool-down test
The unit is run and monitored to confirm it reaches and holds the target temperature.
Warranty issued
A 2-year written workmanship warranty is issued on the completed repair.
Pricing
What Affects the Price of a Not-Cooling Repair
The fault we find determines cost far more than the unit's brand. A filter clean is inexpensive; a leak that needs locating, sealing and regassing costs more. Diagnostics start from €75, waived if you proceed, and gas refills from €120, with the exact price always confirmed in writing first.
| Factor | Why it matters |
|---|---|
| Type of fault | A filter clean or airflow fix is quick; a refrigerant leak needs parts, labour and follow-up. |
| Refrigerant leak location | A leak at an accessible joint is a fast repair; a leak inside the coil may need coil replacement. |
| Unit accessibility | High walls or roofs need extra access equipment. |
| Age and brand | Affects part availability and repair versus replacement. |
| Extent of ice or water damage | Prolonged icing can affect the compressor, which changes the scope of the repair. |
Why Square Meter
Certified Engineers, Fixed Prices, Real Warranty
Square Meter's AC division is the certified, insured HVAC arm of the wider Square Meter renovation, plumbing and electrical group in Valencia, so diagnoses come from an English-speaking engineer who understands the whole building, not just the unit on the wall.
2 yrWorkmanship warranty on every repair
24hEmergency response, 7 days a week
€75Diagnostic callout, waived if repaired
7Major brands serviced and repaired
Coverage Area
Where We Carry Out Not-Cooling Repairs
We diagnose and repair not-cooling faults across Valencia city and the surrounding towns and neighbourhoods:
ValenciaMislataBurjassotPaternaTorrentAlborayaManisesQuart de PobletRuzafaBenimacletCampanarPatraixExtramurs
FAQ
Air Conditioning Not Cooling — Common Questions
The most common causes are low refrigerant from a leak, a clogged filter, a frozen coil, or an overheating outdoor unit. An on-site diagnostic identifies which one applies.
Yes. A clogged filter restricts airflow across the coil, dropping cooling capacity and forcing the compressor to work harder, so checking and cleaning it is the first self-check step before calling for repair.
Ice on the coil or pipework almost always means restricted airflow or low refrigerant. Running the unit like this can damage the compressor, so switch it off and have it inspected.
Square Meter charges a diagnostic callout from €75, which is waived if the repair goes ahead, and a typical fix such as a refrigerant gas refill starts from €120. The final price is always confirmed in a written quote after inspection.
Most not-cooling faults are diagnosed and repaired within a single visit when parts are in stock. Square Meter also offers 24-hour emergency response, 7 days a week, for urgent cases.
Yes. Any repair carried out by Square Meter is backed by a 2-year written workmanship warranty, in addition to the manufacturer's warranty on the unit, covering the specific fault that was fixed.
Related Services
Other Ways We Can Help
If the cause turns out to be something else, these related services cover the rest of the repair and maintenance picture.
Not Cooling? Let's Find Out Why.
Call, WhatsApp or request a quote and we'll get an engineer out to diagnose the fault — most not-cooling repairs are fixed the same visit.