Air Zone Inc
📍 Alhambra, CA 91803
HVAC contractor
David Lai
📍 PO BOX 7705
Verified contact on file — we hold a working email address for David Lai, though not a corroborated California contractor licence. Ask to see proof of licensing directly before booking.
About this listing
David Lai is listed in Alhambra, CA.
Is David Lai the right fit?
Based on what David Lai lists with AirProHQ: services offered are HVAC contractor. We have no record of them advertising 24/7 emergency service — call ahead to confirm hours for anything urgent. We do not have a corroborated California contractor licence on file for this listing — ask to see one before booking. For anything not covered here — such as whether they specifically serve commercial or multi-unit properties — that's worth confirming directly with David Lai before you book, or compare other Alhambra contractors first.
Services
What HVAC work typically costs in Alhambra
Before you call David Lai, it helps to know the going rate. These are national ranges for 2026 — ask any contractor for a written, itemised quote and compare it against them.
| Job | Typical cost |
|---|---|
| Diagnostic / service call | $75 – $200 |
| Capacitor replacement | $100 – $250 |
| Refrigerant recharge | $200 – $600 |
| Compressor replacement | $1,300 – $2,800 |
| Central air conditioner | $3,900 – $7,900 |
| Full HVAC (furnace + AC) | $5,000 – $12,500 |
Ranges from our AC repair cost guide andHVAC replacement cost guide. Actual cost depends on local labor rates and how many hours a system runs each year in your climate.