Sigma Air Conditioning: Top-Rated HVAC Repair Serving New York, NY 10001

Frozen HVAC pipes or coils, especially in PTAC and thru-wall units, are a common issue for New Yorkers, often caused by dirty filters, low refrigerant, or airflow problems. For over 25 years, we've specialized in diagnosing and repairing these specific systems found in condos and co-ops. Our technicians will thoroughly inspect your unit, identify the root cause—whether it's a simple cleaning, a refrigerant recharge, or a component repair—and get your system defrosted and operating efficiently to restore comfort to your home.

Replacing an aging HVAC system in a New York City condo involves specific considerations like building codes, space constraints for thru-wall or PTAC units, and choosing a reliable, efficient model. With our extensive experience serving NYC co-ops and condos, Sigma Air Conditioning guides you through the entire process. We handle the installation or replacement of systems from trusted brands we service, like McQuay or Islandaire, ensuring the new unit is properly sized for your space and installed to meet all local requirements for a long-lasting solution.

We service and install a focused range of brands commonly found in New York City residential buildings. This includes McQuay, Ice Air, Ice Cap, Islandaire, and Simon Aire air conditioners. Our 25 years of experience means we have deep familiarity with the specific repair needs and installation protocols for these PTAC and thru-wall systems, ensuring we can provide expert care whether you need a routine service call or a full system replacement.