

Your AC is running but not keeping your home cool—often due to refrigerant, airflow, or compressor issues.
If your heater won’t start, it could be a thermostat, ignition, or electrical problem that needs quick attention.
Low refrigerant levels reduce cooling efficiency and can damage your system if not addressed promptly.
A faulty thermostat can lead to inconsistent temperatures or systems not turning on at all.
Poor airflow can make your system work harder and leave rooms uncomfortable, often caused by clogged filters or duct issues.
Wiring, capacitor, faulty breakers or other electrical issues can prevent your HVAC system from running safely and reliably.
If your system is over 10–15 years old, constantly breaking down, or driving up energy bills, we’ll recommend the most cost-effective option for your home or business.
With over 35 years of serving homeowners across Houston, we bring the experience and knowledge to guide you from repair to full system replacement. If your AC or heating system needs more than a fix, we’ll inspect your unit and property, provide honest recommendations, and help you choose the best option for long-term comfort and savings.
Think it might be time to upgrade? Call us for a free inspection and see how we can help you save.

MJS AC & HEATING LLC
19407 Park Row Blvd. Katy, TX 77084
Copyright © 2026 MJS AC & HEATING LLC - All Rights Reserved.