Diagnosis & Leak Detection
Pressure testing and an electronic sweep before any gas is added.
What's Included
What a Proper Gas Refill Actually Involves
A refill isn't just connecting a cylinder and squeezing gas in until the pressure looks right. Done properly, it starts with finding out why the system is low in the first place — because on a sealed refrigerant circuit, low gas is a symptom, not a normal wear item.
- ✓Full refrigerant pressure test to confirm the system is genuinely under-charged
- ✓Electronic leak detector and UV dye sweep across pipework, flare joints and coils
- ✓Leak repair or joint re-flaring carried out before any new gas goes back in
- ✓Deep vacuum evacuation of the circuit to strip out air and moisture
- ✓Refrigerant identification from the unit's data plate (R32, R410A or legacy R22)
- ✓Weighed recharge to the manufacturer's exact specified quantity, not a guess
- ✓Superheat and subcooling readings taken once the system is running again
- ✓Post-refill performance check on supply air temperature and system pressures
- ✓Safe recovery and handling of any old refrigerant, in line with F-gas rules
- ✓Written report noting refrigerant type, quantity added and any leak found
- ✓Same-visit repair of the worn valve, joint or fitting causing the leak, where possible
- ✓Practical advice on preventing repeat leaks caused by vibration or corrosion
On Site
What a Gas Refill Callout Looks Like
From the first pressure reading to the paperwork we leave behind, here's what our engineers actually do on a typical visit.
Certified Repair Work
Leaking joints and fittings repaired properly before recharging.
Written Quote, No Surprises
Costs confirmed up front, so the invoice matches what you agreed to.
Signs You Need This
How to Tell Your System Is Low on Refrigerant
A slow leak rarely announces itself. It shows up as a gradual loss of performance that's easy to write off as "the heat" until you compare it to how the unit cooled when it was new.
- ✓Air blowing from the vents feels only slightly cooler than room temperature
- ✓The unit runs almost non-stop but never quite reaches the temperature you set
- ✓Ice or frost has formed on the indoor coil, the copper pipework, or the outdoor unit
- ✓You notice a faint hissing or bubbling sound near the indoor or outdoor unit
- ✓Cooling has been getting weaker gradually over several weeks or months
- ✓Electricity bills have crept up without any change in how you use the AC
- ✓The room takes noticeably longer to cool down than it did in previous summers
- ✓A previous technician mentioned "low pressure" or "low gas" during a check-up
Our Process
From Call-Out to a Correctly Charged System
The order matters: we test and repair before we recharge, because refilling first would mean paying for gas that simply leaks back out.
Book the callout
Describe the symptoms by phone or WhatsApp; most visits are scheduled within a day.
Pressure & leak test
We check system pressures and sweep every joint and coil with an electronic detector.
Leak repair
Any leaking joint, valve or pipe found is repaired or re-flared before we go further.
Vacuum evacuation
The circuit is pulled down to a deep vacuum to remove trapped air and moisture.
Weighed recharge
Refrigerant is weighed in to the exact specification for your unit's model and capacity.
Test & report
We verify temperatures and pressures, then leave you a written summary of the work.
Pricing
What a Gas Refill Costs in Valencia
A refill on its own, with no leak found, sits at the lower end of what a repair visit costs. Where a leak needs fixing, that work is quoted alongside the refill so there are no surprises on the invoice.
Refrigerant Gas Refill
€120 from
Pressure test, weighed recharge and performance check for one indoor unit.
Repair Diagnostic Callout
€75 from
Waived if a repair goes ahead; covers a full leak search and written findings.
Annual Maintenance Visit
€69 from
Catches slow leaks and dirty coils before they turn into a no-cooling call-out.
Why Square Meter
Finding the Leak Comes Before Refilling the Gas
We're the air conditioning arm of Square Meter, a Valencia renovation, plumbing and electrical group, so our engineers are used to working carefully inside finished homes — not just around bare pipework. Every gas refill is carried out by a certified, insured technician using calibrated weighing equipment, never "by feel."
2 yrWorkmanship warranty
24hEmergency response
1 DayQuote turnaround
7Brands installed
Coverage
Gas Refills Across Valencia
We carry pressure-testing and refrigerant recovery equipment on every van, so most gas refill callouts across the following areas are handled in a single visit.
ValenciaMislataBurjassotPaternaTorrentAlborayaManisesQuart de PobletRuzafaBenimacletCampanarPatraixExtramurs
FAQ
Gas Refill Questions, Answered
The questions we hear most often from Valencia homeowners and landlords booking a refill.
A refrigerant gas refill starts from EUR 120 in Valencia. The final price depends on the refrigerant type, how much gas is needed to reach a full charge, and whether a leak repair is required first, and Square Meter always confirms the exact cost in a written quote before any work begins.
Air conditioning systems are sealed circuits and do not consume refrigerant during normal use, so a unit that has run low on gas almost always has a leak somewhere in the pipework, coil or fittings rather than having simply used up its original charge.
Square Meter does not recommend topping up refrigerant without first locating the leak, because an unrepaired leak will let the new gas escape again within weeks or months, wasting the cost of the refill and risking compressor damage from running low on charge.
Most air conditioning systems installed in Valencia over the last several years run on R32 refrigerant, older systems typically use R410A, and units installed before the mid-2000s may still use the now-phased-out R22; Square Meter confirms the exact type from the unit's data plate before refilling.
A straightforward refill with no leak found typically takes 45 to 90 minutes per indoor unit, covering pressure testing, evacuation and weighing in the correct charge, while a visit that also involves finding and repairing a leak usually takes longer.
Gas refills carried out by Square Meter are backed by the standard 2-year written workmanship warranty, so if a leak repaired during the same visit reopens within that period, the follow-up diagnosis and re-repair are covered.
Related Services
You Might Also Need
Low refrigerant is one of several reasons an AC unit stops performing — these related pages cover the rest.
Ready to Sort Out That Low-Cooling Unit?
Call or WhatsApp Square Meter for a pressure test and, where needed, a weighed refrigerant recharge with a full leak check — backed by a 2-year written workmanship warranty.