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A new central air conditioning system in Jeannette typically costs between $4352 and $10881, including the outdoor condenser unit, air handler or coil, refrigerant line set, thermostat, and labor. Price varies based on home size, efficiency rating (SEER2), and whether ductwork modifications are needed. Heat pump systems range from $4974 to $12954. Get a free written estimate from a licensed Jeannette HVAC contractor before committing.

In Jeannette's climate — hot, humid summers and cold winters — a well-maintained central AC system typically lasts 15-20 years. Gas furnaces last 20-25 years. Heat pumps last 15-20 years. Regular annual maintenance (tune-ups at $103-$393) significantly extends equipment life and efficiency. Signs it's time to replace: system is 15+ years old, frequent repairs, R-22 refrigerant (no longer produced), or rising energy bills despite maintenance.

Proper AC sizing is critical — oversized systems short-cycle and cause humidity problems; undersized systems can't keep up on hot PA days. The correct method is a Manual J load calculation performed by your licensed Jeannette HVAC contractor, which accounts for your home's square footage, insulation, window area, ceiling height, and local climate data. As a rough guide: 1 ton per 600-1,000 sq ft, but don't let a contractor quote based on square footage alone without a proper load calculation.

Furnace replacement in Jeannette typically runs $3627 to $9327 for a natural gas system, including the unit, venting, thermostat and labor. High-efficiency (96%+ AFUE) models cost more upfront but save significantly on Pennsylvania gas bills — often paying back in 3-5 years. The final price depends on home size, BTU requirements, and whether venting modifications are needed. A licensed Jeannette HVAC contractor will perform a load calculation to properly size your system.

General rule: if your AC is over 12 years old and repair cost exceeds $1,000 (e.g., compressor failure), replacement is usually the better investment at $4352-$10881. If the system is under 10 years old and the repair is under $500-600, repair makes sense. The '5,000 rule': multiply the system's age by the repair cost — if over $5,000, replace. Also consider: R-22 refrigerant (being phased out, very expensive to recharge), rising energy bills, and uneven cooling. A licensed Jeannette HVAC tech can advise after diagnosis.

In Pennsylvania, HVAC contractors must hold EPA Section 608 certification for refrigerant handling and carry general liability and workers' compensation insurance. Larger jobs may require a PA contractor registration. When hiring in Jeannette: verify their insurance certificate; check if they pull permits (required for new equipment in PA); ask about manufacturer certifications (Carrier Factory Authorized, Lennox Premier, etc.); check Google reviews. Our network includes only pre-screened, licensed and insured Jeannette HVAC contractors.