Furnace Repair in Howell & Beyond

A furnace rarely fails at a convenient time. Oak Grove has repaired Livingston and Oakland county furnaces since 1995, so we have seen every failure mode: bad igniters and flame sensors, failed blower motors, cracked heat exchangers, clogged filters, and control boards that quit in the cold. We show up, find the real cause, and get your heat back.

Owner Tony is a licensed Michigan mechanical contractor, and the OG does not upsell. If a clean and a part will get you through the season, that is what we do. If the furnace is unsafe or past saving, we show you why before you spend a dollar on a replacement.

Common furnace problems we fix

Short cycling, blowing cold air, no ignition, loud banging or rattling, a furnace that trips the breaker, or a carbon monoxide alarm. We test the ignition system, gas valve, blower, limit switches and heat exchanger, then fix the actual fault rather than guessing at parts.

Emergency heat calls

No heat in a Michigan cold snap is an emergency, and we treat it like one. If your furnace is down and the house is dropping, call the OG during business hours and urgent calls get priority.

Repair or replace, told straight

Age, the cost of the repair, efficiency and safety all factor in. A cracked heat exchanger or a furnace past about fifteen to twenty years often makes replacement the better value. We lay out both numbers so you decide with the facts, never a scare tactic.

How a furnace repair call actually goes

When you call, we want the basics first: is there any heat at all, are there odd smells or sounds, and has a carbon monoxide alarm gone off. That last one changes everything, and if it has, we tell you to get out and we treat it as an emergency. Everything else, we work through on site.

On arrival the technician pulls the panel, checks the thermostat call, and watches the furnace try to run through its sequence. A furnace tells you a lot if you let it start and fail once. From there we test the igniter, flame sensor, gas valve, pressure switches, limit switches and blower, and we confirm the read before we quote a part. You get the real cause and a price, and nothing gets replaced until you say go.

The parts that fail first in a Michigan furnace

After thirty years in Livingston and Oakland county basements, the failure list is predictable. Flame sensors foul with a carbon film and the burner lights then drops out a few seconds later. Hot-surface igniters crack from thousands of heating cycles. Blower capacitors weaken and the motor struggles or hums. Pressure switches and condensate traps clog on high-efficiency units and lock the furnace out on safety.

None of that means a new furnace. Most of it is a clean or a single part, and an honest technician will tell you when that is all it is. A cracked heat exchanger is the one exception, because it is a safety problem rather than a comfort one, and we will show you what we found before we ever talk about replacement.

Why furnaces quit on the coldest night

It feels like bad luck, but there is a reason furnaces fail during the first hard freeze. All winter the furnace runs in short, gentle cycles. When the temperature drops into the single digits it runs long and hard for hours, and a marginal igniter, a weak motor or a partly clogged flue that coasted through November finally gives out under the load.

That is exactly why we tell aging-furnace customers to plan ahead. If your furnace is fifteen years or older and you are already nursing it, a check in the fall is a lot cheaper and calmer than an emergency call in the middle of January.

What is included

• Gas and oil furnaces. We service and repair both, including older systems other shops turn down.
• Real diagnosis. We find the true cause, not just swap parts and hope.
• Upfront pricing. You approve the number before any work starts.
• Fast local response. Based in Howell, a short drive from most of the two counties.
• Trane dealer. Factory-backed parts and know-how on Trane equipment.
• Licensed since 1995. A licensed Michigan mechanical contractor on every job.