Frequently Asked Questions

My AC or furnace just stopped working — what should I do before calling you?

We know how stressful it is when your system stops working, especially during extreme weather. Before calling, try checking the thermostat settings, replacing the air filter, and making sure the breaker hasn't tripped. If it’s still not working, give us a call — we’ll schedule a prompt service visit if needed.

How often should I have my HVAC or plumbing systems serviced?

For residential systems, we recommend HVAC maintenance twice a year — once in the spring for cooling and once in the fall for heating. Plumbing inspections should be done annually to catch leaks, water pressure issues, or early signs of corrosion. For businesses, especially those with high usage or specialized systems, more frequent service might be necessary — and we can help build a custom plan for you.

Is it better to repair or replace my old system?

Great question — and it depends. If your system is over 10–15 years old, frequently breaking down, or your energy bills are steadily rising, replacement might be the more cost-effective option in the long run. That said, we always try to repair first if it makes sense financially and functionally. We’ll give you honest, upfront options so you can decide what’s best for your home or business.

Do you offer free estimates?

We sure do. We offer free estimates on new system installations and major repair projects. Before we begin any work, we'll discuss options and make a plan together. Whether it’s a small repair or a large commercial job, we believe in clear, honest communication.

Do you offer maintenance plans — and are they really worth it?

Yes, we do! Our preventative maintenance plans are designed to keep your HVAC and plumbing systems running smoothly year-round. They include seasonal tune-ups, priority scheduling, and discounts on repairs. For homeowners, it means peace of mind and fewer surprise breakdowns. For business owners, it can help avoid costly downtime. Think of it as a little insurance policy for your comfort and budget — and yes, most customers find it more than worth it in the long run.

What can I do to extend the life of my HVAC and plumbing systems?

Great question — a little care goes a long way. Change your HVAC filters every 1–3 months, keep outdoor units clear of debris, and schedule seasonal tune-ups. For plumbing, avoid harsh chemical drain cleaners, check under sinks for leaks occasionally, and know where your main shut-off valve is. And of course, if something feels off, don’t wait — early attention can prevent bigger issues later.

Illustration of an HVAC technician in a navy uniform using a screwdriver to repair a wall-mounted air conditioning unit, with tools, an air filter, and compressor equipment nearby.
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McMillon Mechanical

1025 Walnut Street, Abilene, TX 79601

325-677-2654

"We Care About Your Comfort"

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Proudly Serving Abilene, TX and Surrounding Areas

Clyde • Tuscola • Merkel • Hawley • Baird • Buffalo Gap • Potosi

1025 Walnut St, Abilene, TX 79601, USA

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