Reliable AC Maintenance in Louisville, CO

Having a properly functioning AC system that is well-maintained is very important, especially throughout the sweltering summer months in Colorado. If you have a home or business in Louisville, CO, Welzig Heating and Air is ready to serve you with comprehensive AC maintenance service! Our NATE certified technicians have the training and expertise to ensure your AC equipment runs in optimal condition.

Maintenance Services

Our maintenance services include a complete safety inspection and tune-up, cleaning and filter replacement, lubrication of moving parts, electrical component checks, freon level inspection, and testing of your system for safe and efficient operation. If we discover any issues such as leaks in your system or damaged components, we’ll give you a free repair estimate to take care of the problem.

Central Air Tune-UpsAir Conditioner MaintenanceAir Conditioning Tune-Ups

A great way to save money on your maintenance needs is to enroll into our Welzig Comfort Program. This maintenance agreement gives you access to priority maintenance scheduling, 21-point safety inspections, thorough tune-ups, and no trip charges with select plans. Enrolling will guarantee a system that performs smoothly with minimal risk of unexpected breakdowns or other issues. When you’re trying to find the best and most dependable AC maintenance in Louisville, don’t hesitate to get in contact with us!

AC System Tune-Ups, Air Conditioning Service & AC Maintenance Boulder, CO, Longmont, CO & Louisville, CO

Central Air Tune-Ups, Cooling System Service & Air Conditioning Maintenance

Cooling System Tune-UpsCentral AC ServiceAir Conditioner Maintenance

Satisfied Customers
They Speak For Us

Our 23-year-old A/C system ran out of “borrowed time” and became too difficult to continue maintaining. With great advice from Casey Welzig,, we replaced the old system with a Bryant Evolution A/C system. Max Loustaunau and Seth Bernhardt did an excellent job with removing the old system and installing the new one. Both of them are great to work with — very professional and very personable. We are really amazed at how much better the new system works!


Bob came out to look at our swamp cooler and was remarkably helpful and professional. Not only did he give me a knowledgeable diagnosis, but he also taught me a lot in the process. We’ll be calling him for all future needs with our cooling system.


Dave Kaplan-Gomez and James Miltersen installed my new Tankless Water Heater. Both were polite and professional. Care was taken not to damage anything in my house which I really appreciated. I use Welzig for all my HVAC needs and highly recommend them.

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Air Conditioner Service

Air Conditioner Maintenance

Central Air Tune-Ups

Cooling System Maintenance

Cooling System Tune-Ups

Air Conditioning Tune-Ups

Central AC Service

Louisville, CO