Maintenance
Residential HVAC systems should be professionally serviced twice per year — once in spring before cooling season (March or April in Central Texas) and once in fall before heating season (October or November). This cadence aligns with manufacturer warranty requirements from Carrier, Trane, Lennox, and Rheem, which often require annual documented service to maintain full coverage. Heat pumps should always receive two visits because they run heating and cooling cycles. Filter changes should happen every 30-90 days depending on filter MERV rating, pet count, and household habits.
A thorough HVAC tune-up takes 60-90 minutes and covers: refrigerant charge verification using superheat and subcooling readings, static pressure measurement, amperage draw on compressor and blower motor, capacitor microfarad testing (capacitors drift before failing — measurement catches them early), contactor inspection, coil cleaning indoor and outdoor, condensate drain line flushing with vinegar or tablets, condensate pan treatment, safety switch verification, thermostat calibration, filter inspection, blower wheel inspection, electrical connection torque check, and gas pressure measurement on furnaces. You receive a written report with all measured values documented.
Yes, and the data is clear. Department of Energy studies show dirty condenser coils reduce system efficiency 10-25%, adding $15-$40 per month to summer electric bills in Texas. Low refrigerant charge drops capacity 5-20%. Maintained systems last 40-60% longer in our Central Texas climate — 15-20 years versus 10-12 years for neglected equipment. Most critically, annual documented maintenance is a warranty requirement for Carrier, Trane, Lennox, and Rheem. Skip it and manufacturers can deny covered part claims, potentially costing thousands on a single compressor replacement.
For most Central Texas homes, a MERV 8 to MERV 11 pleated filter is the sweet spot — enough filtration for dust, pet dander, and pollen without creating excessive static pressure on the blower. MERV 13+ filters provide hospital-grade filtration but can starve airflow on systems not designed for them, reducing capacity and stressing blower motors. Fiberglass "spun glass" filters (MERV 2-3) protect the equipment but do nothing for air quality. Change every 30 days if you have pets or allergies, 60-90 days otherwise. Use 4-inch media filters where possible — they need changing only twice per year.
HVAC systems are sealed — they should never need refrigerant added under normal operation. If a technician says your system is "low on freon" and just tops it off without finding the leak, you're being set up for repeat service calls. Refrigerant loss means there's a leak, and a proper repair involves leak detection (electronic or UV dye), leak repair, evacuation, and recharge to manufacturer specification. Meridian never tops off without a leak search under 5 pounds lost. EPA regulations actually prohibit topping off known leaks above certain thresholds without repair.
For most homeowners, yes — but only when the plan offers real value. The Meridian Comfort Club at $19 per month includes two annual tune-ups (which cost $109 each a la carte, saving $190), priority dispatch during peak season, 15% off any repairs, no emergency dispatch fees, and discounted diagnostic fees. For a household that experiences even one minor repair per year, the plan pays for itself. We specifically avoid gimmicks like "free" tune-ups bundled with mandatory "inspection fees" that add up to more than straight pricing.