Regular maintenance prevents 90% of HVAC emergencies. Here is exactly what to do, when to do it, and which tasks require a professional.
Your HVAC system is the most expensive mechanical equipment in your home, and in a climate like Omaha's — where temperatures can swing from 100 degrees in July to minus 10 in January — it works harder than systems in most other parts of the country. Regular maintenance is the single most effective thing you can do to keep it running, extend its lifespan, prevent expensive emergency repairs, and keep your energy bills in check.
At DL Heating & Cooling, we see the same preventable failures over and over: dirty filters that cause compressors to burn out, clogged drains that shut down entire systems, and worn parts that could have been caught with a $100 tune-up but instead turned into a $600 emergency repair. This checklist covers everything you need to do to keep your system in top shape.
These are simple tasks any homeowner can handle. They take five minutes and cost nothing.
This is the single most important maintenance task you can do. A dirty filter restricts airflow, forces your system to work harder, increases energy consumption, and can cause your AC to freeze or your furnace to overheat and shut down. Check your filter every 30 days. Hold it up to a light — if you cannot see light through it, replace it. Standard one-inch filters cost $3 to $10 at any hardware store.
During peak summer and winter when your system runs constantly, filters get dirty faster. Homes with pets, children, or allergy sufferers should replace filters every 30 days regardless. If you use a higher quality four-inch or five-inch media filter, these can last six to twelve months, but still check them periodically.
Walk through your home and make sure all supply and return vents are open and not blocked by furniture, curtains, rugs, or boxes. Closing too many vents disrupts airflow and can create pressure problems in your duct system.
Pay attention to your system when it cycles on and off. Banging, squealing, grinding, or clicking sounds that are new or getting louder can indicate developing problems. Catching these early means a simple repair instead of a major failure.
Complete these tasks in March or April before you need your air conditioner. In Omaha, temperatures can jump from pleasant to 90 degrees in a matter of days, so do not wait until June.
A professional AC tune-up includes tasks you cannot safely or effectively do yourself:
Complete these in September or October. Do not wait until the first cold night to find out your furnace does not work.
We see the consequences of skipped maintenance every week. The most common results are higher energy bills (a dirty system runs 10% to 25% less efficiently), shortened equipment life (a well-maintained system lasts 15 to 20 years while a neglected one may only last 8 to 12), expensive repairs that could have been prevented, and in worst cases, safety hazards like carbon monoxide leaks or electrical fires.
Many manufacturer warranties also require proof of annual professional maintenance. Skipping maintenance could void your warranty, leaving you responsible for the full cost of a major component failure.
Our affordable maintenance plans take the guesswork out of HVAC care. For one annual fee, you get two professional tune-ups per year (spring and fall), priority scheduling if you ever need a repair, discounts on parts and labor, and peace of mind that your system is running safely and efficiently.
We service all brands including Trane, Carrier, Lennox, Goodman, Rheem, and Bryant. When it comes time for replacement, we recommend Oxbox by Trane for the best combination of quality, warranty, and value. View our maintenance plans and pricing →
Due for a tune-up? DL Heating & Cooling offers professional HVAC maintenance across the Omaha metro area. Call (402) 672-6062 to schedule or request an appointment online.
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