HVAC Services Londonderry NH | Call 3D Mechanical Services

A furnace ignition failure is a common winter issue here, often caused by a faulty igniter, flame sensor, or gas valve. Yes, our technicians are experts in diagnosing the exact cause. We carry common parts for local furnace models and can perform a safe, efficient repair to restore your heat, often on the same day you call.

Signs include reduced cooling, ice on the refrigerant lines, and higher energy bills. A leak isn't just an efficiency issue; it puts extra strain on the compressor, which can lead to a complete system failure. We use electronic leak detectors to precisely locate and seal the leak, then recharge your system with the correct amount of refrigerant to protect your investment.

The best defense is proactive maintenance. We recommend a professional tune-up for your heating system in the fall and your cooling system in the spring. This service includes cleaning critical components, checking for early signs of wear (like weak igniters or minor leaks), and ensuring safe operation. It's a small investment that can prevent costly, inconvenient breakdowns during extreme weather.