Whole-System Services
Light Commercial HVAC Service in Oakland County
When the rooftop unit quits, customers and staff feel it before lunch. Our family-owned crew handles light commercial HVAC repair, maintenance and replacement across Oakland County for offices, shops, restaurants and similar buildings. We show up on time and give you the price before work starts.
Tell us what it is doing. We will tell you straight what happens next.
- Rooftop units and split systems
- On time, as promised
- 100% satisfaction guaranteed
Commercial HVAC for small businesses, from a family-owned crew
A hot dining room empties tables. A cold office sends people home. For a small business, heating and cooling is part of being open. Maverick Heating and Cooling has been in business for 7 years, and we look after commercial HVAC in the kind of buildings most local businesses actually work in: small offices, shops, restaurants, salons and multi-tenant strips across Oakland County.
We are a family business with a crew of four, and we are plain about what we take on. Our work is light commercial: packaged rooftop units, split systems and heaters. We show up when we said we would. We tell you what failed, what your options are and what each one costs before any work starts. And the work is 100% satisfaction guaranteed.
What to watch for
What breaks on a rooftop unit
A rooftop unit sits in the weather all year where nobody sees it. These are the common failures, and what is usually behind each one.
Running but not cooling
Often a dirty outdoor coil, a failed capacitor or contactor, or low refrigerant from a leak. On a unit with two compressors, one may have dropped out: the space keeps up on mild days and falls behind on hot ones.
No heat on the first cold morning
The gas heat section sat idle all summer. A failed igniter, a dirty flame sensor, a pressure switch fault or a tripped limit is typical. Cooling can work perfectly while the heat is dead.
Weak airflow at the registers
Clogged filters come first. After that, a worn or squealing blower belt, a slipping pulley or a failing blower motor. When a belt snaps, the unit sounds as if it is running and no air moves.
Water stains on the ceiling tiles
Often it is not the roof. The unit's condensate drain may have blocked, so the pan overflows into the building. It tends to appear in the first humid stretch of summer.
Stuffy on mild days, or bills creeping up
The economizer, the damper that lets a unit cool with outdoor air in mild weather, may be stuck. If it is stuck shut, you lose that cooling. If it is stuck open, the unit fights outdoor air in July and January.
A breaker that keeps tripping
An electrical fault, a failing compressor or a motor drawing too much current. Leave the breaker off and call. Resetting it again and again can turn a repair into a replacement.
What we do
Commercial heating and cooling equipment we work on
We repair, maintain and replace most makes and models of light commercial equipment.
Packaged rooftop units
Gas-electric and all-electric rooftop units: the single cabinet that holds the cooling, the heat and the blower for most small commercial buildings.
Commercial split systems
A furnace or air handler indoors with a condensing unit outside or on the roof, common in small offices and houses converted to business use.
Unit heaters
Gas and electric heaters hung from the ceiling in stockrooms, workshops and small warehouses. Our page on garage and unit heaters covers them in detail.
Rooftop unit repair
Compressors, capacitors, contactors, fan and blower motors, belts, igniters, gas valves, control boards and drains, diagnosed first and then repaired.
Seasonal maintenance
Filters, belts, coils, drains, economizer dampers, the gas heat section and the electrical connections checked and cleaned ahead of the season that needs them.
Rooftop unit replacement
An old unit swapped for a new one sized to the space as it is used today.
Ductless systems
For a back office, a stockroom or an addition the main system never reached, ductless mini-splits heat and cool one space without new ductwork.
Thermostats and schedules
Programmable and smart thermostats set around the hours the building is occupied, so you are not heating and cooling an empty shop.
Maintenance that keeps a business open
Rooftop units fail for dull reasons. A filter nobody changed, a belt that frayed for months, a drain that slowly plugged, a coil matted with cottonwood fluff. None of it matters until the unit stops on the hottest Friday of the summer. Commercial equipment also works harder than a house system: longer hours, doors opening all day, more people, more outdoor air to heat and cool. That is why filters in a business usually need changing more often than at home.
A sensible routine is a cooling check in spring and a heating check in fall. We change the filters, inspect and adjust the belts, clean the coils, clear the drains, test the economizer dampers, check the gas heat section and tighten and test the electrical connections. Then we tell you what we found, including the parts that are wearing but have not failed yet, so you can plan for them instead of being caught off guard by them.
Gas smell or a carbon monoxide alarm in the building
Get everyone out first. For a gas smell, do not look for the leak or flip switches: leave, then call 911 and your gas utility from outside. If a carbon monoxide alarm sounds, move everyone into fresh air and call 911. Call us once the building has been declared safe.
Repair or replace a rooftop unit?
No rooftop unit comes with a fixed lifespan, and how it was looked after matters more than the calendar. A younger unit with a failed motor, contactor or igniter should be repaired. The question gets serious when an older unit needs a compressor or a heat exchanger, or when it has started needing something every season. The usual guide applies: if the repair costs more than half the price of a new unit, look hard at replacing it.
Refrigerant is part of the picture. A unit that runs on R-22 can still be repaired and nobody is required to replace it, but no new R-22 has been made or imported in the United States since 2020, so the supply is recovered and stockpiled refrigerant that only gets scarcer. A leak on one of those units is a strong reason to replace. If you are a tenant, read your lease first, because the party who pays for a repair and the party who pays for a replacement can be different.
What replacing a commercial unit involves
A new unit should be sized to the space as it is used now, not copied from the nameplate of the old one. A shop that became a restaurant, or an open office that was divided into rooms, has a different load from the one the original unit was chosen for. Oversized equipment short cycles and leaves the space clammy in summer. We also check whether the new unit fits the existing roof curb and duct openings or needs an adapter, and that the gas and electrical supply suit it.
Then there is the changeover. Getting a unit onto a roof usually means a crane, and the building has no heating or cooling from that unit while the swap is under way. We agree on the day with you ahead of time, so you can plan around the gap. You will know the plan and the price before anything is ordered.
Working with owners, tenants and property managers in Oakland County
If you manage several units or several buildings, what you need most from a contractor is communication. Tell us who approves the work and who needs to hear about it, and that is how we run the job. You get the cause, the options and the price before any work starts, in words you can pass straight on to an owner or a tenant. One phone number reaches us: 248-930-2080. To see where we travel, look at our service area.
How it works
How a commercial service call works
You call us
Tell us the type of building, what the equipment is doing and how the unit is reached, such as a roof hatch or a ladder. We will tell you honestly how soon we can be there.
We arrive on time
We show up when we said we would, check in with whoever is in charge on site and go to the unit to find the cause.
Cause, options, price
You or your manager get a plain explanation and the price before any work starts. If approval has to come from a building owner, we wait for it.
Repaired and reported
We make the repair, run the unit in heating and in cooling, and tell you what else we noticed while the panels were off. 100% satisfaction guaranteed.
Why Maverick
Family-owned, on time and honest for 7 years
Family-owned
A family business with a crew of four, in business for 7 years.
On time
You planned your day around us. When we give you a time, that is when we are at your door.
Honest work
We show you what is wrong and tell you the price before we start. If a small fix does it, we say so.
100% satisfaction guaranteed
We stand behind every job. Your satisfaction is guaranteed, 100%.
How often should commercial HVAC be serviced?
Twice a year suits most small commercial buildings: cooling in spring and heating in fall. Filters need attention more often than that, and how often depends on the business. A quiet office is easy on filters. A restaurant, a salon, a workshop or anywhere with a door that opens all day is not. When we pull yours we will show you what they look like, and you can set the interval from that.
Why is one part of my building hot and another cold?
Usually because the space has changed and the ductwork has not. Walls go up, a tenant rearranges the layout, and the supply and return grilles end up serving rooms that no longer exist. A thermostat left in the wrong room after a remodel causes the same complaint. We check airflow room by room before we blame the equipment.
What is the difference between commercial and residential HVAC?
The principles are the same; the packaging and the workload differ. A house usually has a furnace in the basement and an air conditioner outside. A small commercial building usually has everything in one cabinet on the roof, often on three-phase power, bringing in outdoor air for the people inside. It runs longer hours, so its filters, belts and coils need attention more often.
Do you work on restaurant heating and cooling?
Yes, on the equipment that keeps the dining room and the staff comfortable: rooftop units, split systems and thermostats. We keep to comfort heating and cooling. Refrigeration, kitchen exhaust and large central plants are separate specialist trades. Tell us what you have when you call 248-930-2080 and we will say plainly whether it is work we take on.
How much does commercial HVAC repair cost in Oakland County?
It depends on what failed and how the unit is reached. A capacitor, a belt or an igniter is a small repair. A compressor or a heat exchanger is a large one. We do not quote blind. We diagnose the fault and give you the price before any work starts, so you or the building owner can decide with the facts in hand. Call 248-930-2080.
Keep reading
Related services
Other work we do alongside commercial HVAC.
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Heating + cooling
HVAC Repair
Not sure if it is the furnace, the AC, the thermostat or the ducts? We track it down and fix it.
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Heating + cooling
HVAC Maintenance
A heating check in fall and a cooling check in spring. One-time tune-ups, nothing to sign up for.
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Heating + cooling
Ductless Mini-Splits
Heating and cooling for rooms with no ducts: additions, garages, sunrooms and older homes.
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Heating
Garage Heaters
Gas and electric garage heaters sized, installed and repaired, so the garage is usable all winter.
Where we work
Commercial HVAC across Oakland County
We are a family-owned crew of four serving these communities and the towns around them.
- Troy
- Rochester Hills
- Royal Oak
- Southfield
- Farmington Hills
- Novi
- Waterford
- West Bloomfield
- Pontiac
- Bloomfield Hills
- Birmingham
- Auburn Hills
- Clarkston
- Lake Orion
Do not see your town? Call 248-930-2080 and ask, or see our full service area.
Too hot or too cold?
Call the family that shows up
On time. Honest about the problem and the price. 100% satisfaction guaranteed.
248-930-2080Maverick Heating and Cooling · Family-owned · Oakland County, MI