Aer Systems LLC
📍 Carlsbad, CA 92008
HVAC contractor
Opus Fidelis
📍 2588 EL CAMINO REAL STE F 500
About this listing
Opus Fidelis is listed in Carlsbad, CA. New split-system air conditioners installed anywhere in Texas must meet a minimum of 14.3 SEER2 under the federal South-region standard — worth knowing when you compare quotes, since a cheaper unit that falls below it cannot lawfully be installed here.
Is Opus Fidelis the right fit?
Based on what Opus Fidelis 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 Texas 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 Opus Fidelis before you book, or compare other Carlsbad contractors first.
Services
What HVAC work typically costs in Carlsbad
Before you call Opus Fidelis, 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 and HVAC replacement cost guide. Carlsbad sits in a hot-climate market, where systems run more hours a year and wear out sooner than the national average.