AC Maintenance & Tune-Up Services in Metro Detroit — OnPoint HVAC


Reliable AC Maintenance Service In Metro Detroit

Michigan summers are no joke. When temperatures climb into the upper 80s and humidity settles in, your central air conditioning system becomes the most important piece of equipment in your home — and the last thing you want is for it to fail on the hottest day of the year. At OnPoint HVAC, we believe the best way to keep your AC running reliably through every cooling season is with proactive, engineer-led maintenance performed before problems start.



The math on preventive care is simple: a professional AC tune-up typically costs a fraction of what you'd pay for an emergency repair or early system replacement. OnPoint HVAC, founded by licensed mechanical engineer George Petrentzev and based in Livonia, MI, brings an engineer's precision to every AC maintenance visit so your system performs at peak efficiency all season long.


A technician uses a red wrench to repair the internal components of a wall-mounted gas boiler.

What's Included in Our AC Tune-Up

  • Refrigerant level check — Verify charge is within manufacturer specs; identify signs of leaks


  • Evaporator and condenser coil cleaning — Remove dirt and debris that reduce heat transfer efficiency


  • Electrical connection inspection and tightening — Loose connections are a leading cause of equipment failures


  • Thermostat calibration — Confirm your thermostat reads and responds accurately


  • Airflow measurement and duct check — Identify restrictions, leaks, or imbalances reducing system performance


  • Air filter inspection and replacement recommendation — Dirty filters strain the blower motor and reduce indoor air quality


  • Condensate drain cleaning — Clear blockages that can cause water damage and mold growth


  • Capacitor and contactor check — A failing capacitor is one of the most common AC breakdown causes


  • Blower motor inspection — Check motor operation, bearings, and belt for wear


  • Overall system performance test — Measure supply and return air temperatures to confirm the system is cooling as designed


Every item is documented and reviewed with you at the end of the visit. If we find anything that needs attention, you'll receive a clear explanation and a repair quote before any work proceeds.

A technician in a grey shirt inspecting the internal components of a wall-mounted gas boiler.

Benefits of Annual AC Maintenance

1. Longer Equipment Life Air conditioners that receive regular maintenance consistently outlast neglected systems. Cleaning coils, lubricating moving parts, and catching small issues early prevents accelerated wear that cuts years off an AC's lifespan.


2. Lower Energy Bills A well-maintained AC runs more efficiently. Dirty coils, low refrigerant, and clogged filters all force the system to work harder — driving up your monthly utility costs.


3. Fewer Emergency Repairs Most mid-season AC breakdowns are preventable. Capacitor failures, refrigerant leaks, and electrical faults show warning signs that a trained technician catches during routine maintenance before they become costly emergencies.


4. Maintained Manufacturer Warranty Coverage Many HVAC manufacturers require documented annual maintenance as a condition of the equipment warranty. Annual service with OnPoint HVAC keeps your warranty intact.

When to Schedule AC Maintenance

Signs your AC needs service now, regardless of season:


  • AC is running but the house isn't reaching the set temperature
  • Higher electric bills without a change in usage habits
  • The system is short-cycling (turning on and off rapidly)
  • Unusual sounds — grinding, squealing, banging, or rattling
  • Moisture or ice forming around the indoor unit
  • The system hasn't been serviced in over 12 months


If any of these apply, schedule your AC tune-up now. Interested in protecting both systems year-round? Ask about our full HVAC tune-up service or HVAC maintenance plan.

Our Metro Detroit Service Area

OnPoint HVAC provides HVAC services across Metro Detroit including Livonia, Westland, Canton, Plymouth, Northville, Farmington Hills, Novi, Garden City, Dearborn, Dearborn Heights, Redford, Southfield, Troy, Royal Oak, Birmingham, Ann Arbor, and surrounding communities throughout Wayne, Oakland, and Washtenaw counties.

Frequently Asked Questions About AC Maintenance

  • How often should I have my AC serviced?

    Most HVAC manufacturers recommend annual AC maintenance — once per year, typically in the spring before the cooling season begins. If your system is older (10+ years), runs heavily, or has had previous issues, twice-yearly service may be advisable.

  • What does AC maintenance cost in Michigan?

    AC tune-up pricing in the Metro Detroit area typically ranges from $80 to $150 for a standard residential service visit. For predictable costs and priority scheduling, our HVAC maintenance plan offers significant savings over per-visit pricing.

  • Can I do AC maintenance myself?

    Homeowners can handle a few basic tasks: replacing or cleaning air filters every 1–3 months and keeping the outdoor condenser unit clear of debris. However, refrigerant level testing, electrical inspection, coil cleaning, and capacitor testing require EPA certification and specialized tools. For anything beyond the filter and outdoor unit, leave it to a licensed technician.

Schedule Your AC Tune-Up Today

Schedule your AC tune-up online or call us at (248) 331-8090. We also offer AC repair services and AC installation for complete cooling system support.


OnPoint HVAC — Licensed. Engineer-Led. Family-Owned. Serving Metro Detroit from Livonia, MI.

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AREAS WE SERVE

  • BERKLEY
  • BIRMINGHAM
  • CANTON
  • FARMINGTON
  • FARMINGTON HILLS
  • FERNDALE
  • FRANKLIN
  • LIVONIA
  • NORTHVILLE
  • NOVI
  • PLYMOUTH
  • REDFORD
  • ROYAL OAK
  • SOUTHFIELD