| Day | What happened |
|---|---|
| Day 1 | Customer asked to quote a compressor: "no cold air at all." We gave the 3-step self-check instead |
| Day 1 | Photos back: half the condenser fins clogged; constant bubbles in the sight glass = undercharged; low-side low + high-side high = poor heat rejection |
| Day 2 | Condenser washed backwards with a pressure washer, system vacuumed and recharged, two line O-rings replaced |
| Same afternoon | 8°C at the vents. Zero spent on the compressor — the customer put the savings into a spare filter set |
| Check | Symptom | Conclusion |
|---|---|---|
| Condenser face | Clogged fins, oily film | Wash it out — poor heat rejection trips high-pressure protection |
| Receiver sight glass | Constant bubbles | Low charge — find the leak before recharging |
| Pressure switch | Clutch never engages | Switch or wiring — test continuity first |
| Expansion valve | Very low low-side, frosting | Blocked valve or loose sensing bulb |
| Compressor | Clutch engages but no pressure split | Only now suspect internal wear/leakage |
Spend the compressor money last — most AC faults live in cooling, charge and switches; the compressor itself is the least likely culprit.
| Method | What you provide | Result |
|---|---|---|
| 1. Part number (fastest) | The part number / VOE number / CAT number — nothing else needed | Stock and price confirmed within minutes; 100% precise |
| 2. Model + serial number + year | e.g. EC210B + machine serial + year 2015 | The same model can have several versions — the serial number pins it down |
| 3. Photo of nameplate / old part | A clear photo of the machine nameplate, or the printed/stamped number on the old part | We verify fitment from the photo — our responsibility, not yours |
| 4. Fault description + replacement history | Briefly describe the symptom and whether/when this part was replaced before | We help judge what to replace — and whether a root cause is still hiding |
Send any one of the four to our online chat to lock in the right part. The more you share, the faster and more accurate the quote.
Tap through to our live parts search — check stock and send us the part number for an instant quote:
Recharging needs gauge manifolds and proper handling — best done by a local AC tech; we supply the parts and seals.
Use refrigerant-resistant green/black O-rings — ordinary rubber corrodes and leaks. Send us the line diameters and we'll match.
Photograph the compressor nameplate (brand/model) or send the machine serial; we quote genuine and quality-alternative side by side.
Send it to our online chat — in-stock parts quoted the same day.