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Trane AC Not Cooling — Why It Runs But Won’t Cool Your Home

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When your Trane air conditioner is running but your home isn't cooling down, it is one of the most frustrating situations a St. Louis homeowner can face — especially in the middle of a July heat wave. The system is on, the outdoor unit is running, but the house stays warm. This guide covers every …

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Trane AC Capacitor Failure — Symptoms, Causes, and Repair

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The capacitor is one of the most commonly failed components in a Trane air conditioner or heat pump — and fortunately, one of the most affordable and quickest to repair. A failed capacitor can prevent the outdoor unit from starting, cause the compressor to run inefficiently, or leave the condenser fan stopped while the compressor …

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Trane AC Fault Codes and Troubleshooting Guide

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Trane air conditioners and heat pumps use a diagnostic flash code system to communicate faults to technicians and homeowners. When your Trane AC stops cooling, short cycles, or refuses to start, the system's control board is often already telling you exactly what went wrong — if you know how to read it. This guide covers …

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Frequently Asked Questions: Homeowner’s Guide to AC

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These frequently asked questions are essential for homeowners to ask themselves when maintaining their indoor air quality. If you have questions about your air conditioner or need professional service, working with a trusted local HVAC company makes a difference. Thomas Hoffmann Air Conditioning & Heating LLC provides reliable AC repair, maintenance, and installation services for …

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Why Does My AC Keep Turning Off and On?

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If your air conditioner keeps turning on and off every few minutes, it’s usually a sign that something isn’t working correctly. This issue is commonly known as AC short cycling, and it can lead to higher energy bills, reduced comfort, and unnecessary wear on your HVAC system. For homeowners in St. Louis, short cycling is …

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What Size Air Conditioner Does Your St. Louis Home Need?

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Learn how to choose the right AC size for your St. Louis home. Discover why proper air conditioner sizing matters and when to schedule a consultation. When summer temperatures rise in the St. Louis metro area, a properly sized air conditioner makes the difference between a comfortable home and one that constantly feels hot and …

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