Quick Answer
HVAC maintenance has three layers: check the filter monthly, keep the outdoor unit and vents clear, and get a professional tune-up twice a year — the AC in spring and the furnace in fall. In Lincoln's hot climate, the spring AC tune-up is the most important visit of the year.
Monthly
A few minutes each month prevents most problems:
- Check the air filter and replace when dirty
- Make sure vents and returns are unblocked
- Listen for new noises when the system starts
Spring (before cooling season)
Get the AC ready before the first 95°F day:
- Clear leaves, weeds and debris at least 2 feet around the outdoor unit
- Gently rinse the condenser coil fins with a garden hose (power off first)
- Pour a cup of white vinegar into the condensate line access to prevent clogs
- Schedule a professional AC tune-up in March, April or May
Fall (before heating season)
Prepare the heating side:
- Replace the filter
- Test the heat and CO detectors
- Schedule a furnace or heat pump tune-up in October or November
What a professional tune-up covers
A technician checks refrigerant pressures, measures temperature split, tests capacitors and contactors, cleans the condenser coil, clears the condensate drain, inspects electrical connections, and on the heating side checks burners, flame sensor, heat exchanger and venting. These are the parts that fail most often — and catching them early is far cheaper than an emergency call.
Frequently Asked Questions
How often should HVAC be serviced?
Twice a year: the air conditioner in spring and the furnace or heat pump in fall. Heat pumps are used year-round and benefit from both visits.
Does maintenance affect my warranty?
Many manufacturer warranties require proof of regular professional maintenance. Keep your service records.