HVAC & AC Repair FAQ

AC repair costs in Port St Lucie typically range from $150-$800 depending on the issue. Simple repairs like thermostat replacement or refrigerant recharge cost $150-$400, while compressor or evaporator coil repairs run $400-$800. We offer FREE quotes and upfront pricing – no surprises! Call (772) 344-3700 for an exact estimate on your specific AC issue.

Subzero Cooling & Heating services ALL major HVAC brands including Trane, Rheem, Lennox, Carrier, Goodman, Mitsubishi, York, Amana, American Standard, and more. With 31 years of experience, our certified technicians are trained on every make and model. Whether you have a high-efficiency system or an older unit, we can repair or maintain it.

YES! We provide 24/7 emergency AC repair service throughout Port St Lucie and the entire Treasure Coast area. When your AC breaks down in the middle of a Florida summer, we understand it’s an emergency. We offer same-day service and can often arrive within hours of your call for emergency situations.

In Florida’s extreme heat and humidity, we recommend AC maintenance at least twice per year – once in spring before peak cooling season, and once in fall. Florida’s climate puts extra strain on AC systems, running nearly year-round. Regular maintenance extends your system’s lifespan by 5-10 years, reduces energy bills by up to 15%, and prevents costly emergency breakdowns during summer heat waves.

For Florida’s climate, we recommend high-efficiency systems rated 16+ SEER with variable-speed compressors and advanced dehumidification. Top performers include Trane XL20i, Carrier Infinity, Lennox Signature Series, and Rheem Prestige Series. These handle humidity better and save 20-40% on energy costs. The ‘best’ unit depends on your home size, budget, and needs – our experts provide FREE consultations to recommend the perfect system for your home.

Most residential AC installations take 6-12 hours (1-2 days for complete system replacement). Simple AC unit swaps can be done in 4-6 hours, while full HVAC system installations with ductwork modifications take 1-2 days. We work efficiently to minimize disruption to your home. Our team provides exact timelines during your FREE estimate and always cleans up completely after installation.

Common causes include: low refrigerant (leak), dirty air filters, frozen evaporator coils, faulty compressor, or thermostat issues. In Florida’s heat, dirty filters can reduce cooling by 30%. If your AC runs constantly but doesn’t cool, turn it off and call us immediately at (772) 344-3700. Continuing to run a malfunctioning AC can cause expensive compressor damage. We offer same-day diagnostics.

YES! We offer flexible financing options with approved credit to make AC installation and major repairs affordable. Options include 0% interest for qualified buyers, low monthly payments, and same-day approval. Don’t let a broken AC go unfixed due to cost – we’ll work with your budget. Ask about current financing promotions when you call (772) 344-3700 or request a free quote.

Absolutely! Subzero Cooling & Heating is fully licensed (Florida License #CAC1817316), insured, and bonded. All our technicians are EPA-certified and undergo continuous training on the latest HVAC technology. We carry full liability insurance and workers’ compensation to protect your property and our team. With 31 years serving Port St Lucie and the Treasure Coast, we’re a trusted, established local business.

We proudly serve the entire Treasure Coast area including Port St Lucie, Fort Pierce, Stuart, Jensen Beach, Palm City, Port Salerno, Hobe Sound, Indiantown, Saint Lucie West, Tradition, White City, and Fort Pierce South. If you’re in Martin County or Saint Lucie County, we can help! Call (772) 344-3700 to confirm service to your specific location.