Refrigerant & Leak Test
A sealed system never runs low. If yours is, it's leaking — so we test and find the leak before we add a gram, then charge by weight to the nameplate, not by feel.
Noticing any of these?
You don't need to diagnose it — that's our job. Send a photo or a short video on LINE or WhatsApp and a technician will tell you what you're dealing with before you book.
- Ice on the indoor coil or the outdoor pipe
- Blows cool-ish, never actually cold, after a clean
- Hissing or bubbling sound at the indoor unit
- Outdoor unit runs constantly without the room reaching temperature
- Oily residue on pipe joints or the outdoor unit
The CoolRova protocol
Pressure & superheat check
Gauges on, running pressures and temperatures compared against the manufacturer's chart for the ambient.
Find the leak
Nitrogen pressure test and electronic detector across flare joints, valves and coils — the leak is photographed and quoted.
Fix, vacuum, weigh in
Joint remade or part replaced, system pulled to a deep vacuum, then R32 or R410A charged by weight to the nameplate.
Verify & log
Run under load, supply-air temperature and pressures logged in your report so the next technician has a baseline.
What's included
- Pressure and temperature diagnosis
- Nitrogen leak test with electronic detection
- Refrigerant charged by weight — R32 or R410A
- Deep vacuum before charging
- Readings logged in your photo report
Free gas check on every package visit
Every year package includes a pressure check on every visit — catch a slow leak before the compressor pays for it.
See year packagesCommon questions
Can't you just top it up?+
We can, and it will be cold for a few months — then you pay again. Finding the leak costs less over a year and it's included in the price, so we do it first.
How much does gas cost?+
From ฿990 for a small top-up including the leak test. A full recharge after a repair is ฿1,800–3,500 depending on the system and refrigerant.
R32 or R410A — does it matter?+
Yes — they can't be mixed. We carry both and check the nameplate before connecting anything.
Free guides from our technicians
Other things we do
Book your refrigerant top-up
Fixed price up front, confirmation within 5 minutes, and a photo report when it's done.