United Heating and Cooling | Expert HVAC Services in Rochester, MN

Ice buildup on your outdoor unit is common here due to our cold, damp winters, often caused by low refrigerant, airflow issues, or a failing defrost cycle. This isn't just an inconvenience—it can damage the compressor. Our repair technicians will diagnose the root cause, whether it's a leak, a dirty filter, or a faulty sensor, and perform the precise repair to restore proper operation and prevent future freezing.

Key signs include a strange, metallic odor (like formaldehyde), soot around the furnace, or visible rust and cracks during an inspection. A crack can leak carbon monoxide—a serious safety hazard—into your home. Given the strain Rochester's temperature swings put on systems, we prioritize safe, code-compliant heat exchanger or full furnace replacements to ensure your family's safety and your system's reliability.

If your system is over 15 years old, requires frequent repairs for issues like repeated freezing or heat exchanger concerns, or your energy bills are climbing, a replacement is often more cost-effective. We install modern, energy-efficient systems better suited to handle Rochester's extremes, providing more consistent comfort, improved indoor air quality, and significant long-term savings on utility costs.