Emergency HVAC Repair in Metro Detroit — OnPoint HVAC

Emergency HVAC Repair in Metro Detroit

When your furnace goes out at 2 a.m. in January or your air conditioner fails during a July heat advisory, you need a contractor who picks up the phone and shows up — not one who schedules you for next week. OnPoint HVAC provides emergency HVAC repair services throughout Metro Detroit for exactly these situations. We are a licensed, family-owned, engineer-led contractor based in Livonia, Michigan, and we understand that HVAC emergencies in this climate are not inconveniences — they are health and safety events.



Licensed mechanical engineer George Petrentzev founded OnPoint HVAC on the principle that every repair, emergency or otherwise, deserves a proper diagnosis before a solution is proposed. When our technicians arrive at your home, they bring the same engineering discipline to a 3 a.m. furnace call that they bring to a planned installation — because guessing at a repair in the middle of a Michigan winter is not acceptable.


Family enjoying a warm home during winter, highlighting the importance of emergency HVAC services

What Counts as an HVAC Emergency?

Not every HVAC issue requires an emergency call, but these situations do:



  • No heat when outdoor temperatures are below freezing. A non-functioning furnace or heat pump in Michigan winter is a health risk, particularly for households with young children, elderly residents, or medical conditions. Do not wait until morning.
  • No cooling during an extreme heat advisory. Sustained indoor temperatures above 90°F carry real health risks, especially for vulnerable household members.
  • Gas smell near your furnace or HVAC equipment. Leave the home, do not operate electrical switches, and call your gas utility's emergency line first. Once the gas company has cleared the home, call us to diagnose the HVAC source.
  • Carbon monoxide alarm triggered. Leave immediately and call 911. After the home is cleared, a cracked heat exchanger or combustion issue in your HVAC system may be the cause — this requires immediate inspection before the system is run again.
  • Water actively flooding from your HVAC system. A failed condensate pump, frozen evaporator coil that has thawed rapidly, or cracked heat exchanger can release significant water into your home. Turn off the system and call.
  • Complete system failure before a scheduled event or with vulnerable occupants at home.


A Goodman furnace and air conditioning unit with connected pipes and wiring, situated in a room near an open doorway.

Common Emergency HVAC Repairs We Handle

OnPoint HVAC technicians are equipped to diagnose and repair a full range of emergency failures across furnaces, air conditioners, and heat pumps:


Furnace Emergencies

  • Igniter failure (no ignition, system locks out)
  • Gas valve or pressure issues
  • Flame sensor fouling causing repeated shutdowns
  • Blower motor failure
  • Heat exchanger cracks (carbon monoxide risk — critical)
  • Control board failures
  • Draft inducer motor failures

Air Conditioner Emergencies

  • Compressor failure during heat advisory
  • Refrigerant loss causing complete cooling failure
  • Capacitor failure preventing startup
  • Frozen evaporator coil with water damage risk
  • Condenser fan motor failure

Heat Pump Emergencies

  • Reversing valve failure (system blows wrong temperature air)
  • Defrost cycle malfunction in extreme cold
  • Compressor failure
  • Refrigerant loss


For non-emergency furnace repair, AC repair, or heat pump service, see our dedicated service pages.

Our Emergency Response Process

Step 1 — Call and Dispatch. When you call OnPoint HVAC at (248) 331-8090, you reach our team directly. We confirm your address, gather information about the failure symptoms, and dispatch a technician with the parts most likely needed based on your system type and failure description.


Step 2 — Diagnosis First. Our technicians arrive with diagnostic equipment and conduct a systematic evaluation of your system before recommending any repair. We do not replace parts at random hoping to fix the problem — we find the root cause. This matters because a misdiagnosed emergency repair leaves you with a bill and a system that fails again.


Step 3 — Clear Estimate Before Any Work. We explain what failed, why it failed, and what it will take to fix it — with a clear price — before any repair work begins. No surprises on the invoice.


Step 4 — Repair and Verification. After completing the repair, we run the system through a full operational check to confirm the failure is resolved and the system is running safely and correctly. We do not leave until we are confident the system will hold.

Why Engineer-Led Emergency Repairs Matter

Most HVAC contractors are good at replacing the obvious failed component. What separates OnPoint HVAC is what happens next: George Petrentzev's engineering background means we look at why the component failed — because a capacitor that fails repeatedly is telling you something about your electrical supply, refrigerant charge, or system load that a straightforward swap will not fix.


This approach means fewer repeat failures, fewer emergency calls over time, and a system that is actually repaired rather than temporarily patched. It also means that if your system is at the end of its service life and repeated emergency repairs are not the right investment, we will tell you honestly — and help you plan a full HVAC replacement instead.

Service Area

OnPoint HVAC provides emergency HVAC repair throughout Metro Detroit, including:


Livonia, Northville, Plymouth, Canton, Westland, Garden City, Redford, Dearborn, Dearborn Heights, Farmington Hills, Novi, Wixom, South Lyon, Milford, Ann Arbor, Ypsilanti, Romulus, Taylor, Southgate, Wyandotte, Trenton, Wayne, Belleville, Inkster, Oak Park, Royal Oak, Berkley, Ferndale, Southfield, Bloomfield Hills, Troy, Sterling Heights, and surrounding communities.


For a full overview of our HVAC services across Metro Detroit, visit our main service area page.

Frequently Asked Questions

  • How fast can OnPoint HVAC respond to an emergency?

    Response times vary based on time of day and current call volume, but emergency calls are always prioritized over routine service appointments. Call (248) 331-8090 and we will give you an honest ETA when you call.

  • Do you charge extra for emergency or after-hours HVAC repairs?

    Emergency and after-hours calls typically carry a service charge that reflects the urgency and scheduling impact. We are upfront about all charges before any work begins — you will know exactly what you are paying before we start.

  • What should I do while waiting for the technician?

    For a no-heat emergency in winter: use space heaters safely (keep away from flammables, never leave unattended), add layers, and concentrate in one room to retain heat. For a no-cool emergency in summer: close blinds on sun-facing windows, move to the lowest floor (cooler air settles), use fans, and stay hydrated. For any gas smell: leave the home and do not re-enter until cleared by your utility.

  • Can you fix my HVAC system the same day?

    In most cases, yes — our technicians carry common replacement parts for the most frequent failure points in Metro Detroit's most common HVAC systems. For less common parts or complex failures, we will stabilize the system where possible and schedule the completion repair as quickly as the part can be sourced.

Ready for emergency HVAC repair that actually fixes the problem?


 Call OnPoint HVAC at (248) 331-8090 any time. George Petrentzev and the OnPoint team will diagnose the problem right, fix it right, and make sure it holds so you are not making the same call again next month.

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AREAS WE SERVE

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