What a Seasonal HVAC Tuneup Checks, and Why Houston Homes Need Two a Year

A tuneup can mean very different things depending on who is doing it. At one end is a quick look at the filter and a signature on a form. At the other is a visit that goes through the system part by part and catches small problems while they are still cheap to fix. In a Houston summer, with the air conditioner running most of the day, that difference tends to show up later as fewer emergency calls. Here is what a thorough seasonal tuneup generally covers, why two a year suit the Gulf Coast, and how the maintenance agreements at Douglas Mechanical are set up.

What a thorough tuneup looks at

Exact checklists vary from one company to another, so ask what yours includes. In general, a filter tells you very little. It shows whether air passes through one point, and nothing about the parts that tend to fail first. A thorough seasonal visit usually looks at the following.

• Electrical connections, for looseness, heat damage or corrosion
• The capacitors and motors that start the fan and the compressor, tested rather than guessed at
• The indoor and outdoor coils, for dirt and buildup that keeps them from shedding or absorbing heat
• Refrigerant pressures, compared with what the manufacturer specifies
• The condensate drain line and pan, cleared before algae can block them
• Thermostat settings and calibration, and the airflow coming out of the registers

Humidity makes the drain line item more important here than in a dry climate. An air conditioner in Spring pulls a steady amount of water out of the air all summer, and a clogged drain turns that water into a stained ceiling or a safety switch that shuts the system off in the middle of a heat wave. Catching a slow drain in spring costs far less than repairing drywall in August.

Why twice a year suits the Gulf Coast

In much of the country one annual visit is enough because the cooling season is short. North-west Houston is different. The air conditioner works from spring well into autumn, and the same equipment, if it is a heat pump, also carries the house through the winter. A visit before the cooling season and another before the cold weather lets a technician look at each mode of the system just before it is asked to work hardest.

Two visits also give a technician something to compare. Wear that is invisible in a single visit becomes obvious across two or three, such as a capacitor that is slowly weakening or a coil that collects dust faster than it should. That is how Douglas Mechanical builds its maintenance agreements as well: every tier includes biannual seasonal tuneups, so the schedule is part of the plan rather than something you have to remember to book.

Silver, Gold and Platinum agreements

Douglas Mechanical offers three maintenance agreement tiers, named Silver, Gold and Platinum, and each includes biannual seasonal tuneups. The company publishes these benefits for its agreements.

• Correction of problems and issues found along the way
• Longer equipment lifespan
• Scheduled service reminders
• Maintenance documentation
• Priority scheduling
• Discounted pricing on parts and labor

What separates the tiers, and what each one costs, is not something to guess at from an article, so ask for the current terms of each plan when you call and read the contract language before you choose, the same way you would with any service agreement. Maintenance documentation deserves a mention on its own. A record of what was checked and fixed each season is useful the next time anyone looks at the system, and it saves you from trying to remember whether the drain was cleared last spring or the spring before. Some owners choose a plan the moment a new system goes in, and others add one after an unplanned repair. Either way, the sooner the first seasonal visit is on the calendar, the sooner there is a baseline to compare every later visit against.

What a tuneup cannot do

No visit prevents every failure. Parts wear out on their own schedule, and a capacitor can quit on the first hot afternoon after a perfect inspection. What a tuneup buys is fewer surprises, a system that stays closer to the efficiency it was built for, and a better chance that the eventual failure is found at a scheduled visit rather than at nine on a Saturday night.

When something does break between visits, Douglas Mechanical says it guarantees same day service for emergency repairs and uses only factory authorized brand name equipment and parts. Its technicians are in the field from 8am to 8pm every day of the week, and the company says certified technicians are available around the clock for emergencies. If your system has not been looked at since before last summer, call (281) 299-0949 to set up a seasonal tuneup or to ask about the maintenance agreements, or book the free in-home estimate if you are also wondering how much life the equipment has left.