Replacing a Rooftop Air Make Up Unit in Ohio
A rooftop make-up unit lives outdoors and eventually wears out: rusted cabinets, cracked heat exchangers on indirect units, failing burners and controls that cannot be repaired. Ohio plants replacing an old rooftop unit need the new one to land on the existing curb or a new one, connect to existing ductwork and get running with minimal downtime. Double D replaces rooftop air make up units and handles the mechanical reconnections.
Discuss your installationWhen replacement beats repair
Repeated burner failures, cabinet corrosion, cracked heat exchangers and obsolete controls are good signs that replacement is the better path. A unit that no longer delivers its rated airflow is also a candidate.
Curb and structure
New units rarely match old curb dimensions. Curb adapters bridge the gap, or a new curb is installed. Roof structure should be checked if the new unit is heavier.
- Curb adapter or new curb
- Roof structure check
- Flashing and weatherproofing
- Duct transition below the roof
Lift day
Rooftop replacements usually involve a crane. Disconnecting the old unit, lifting it out, setting the new one and reconnecting gas, electrical and duct are planned for the same day where practical.
Startup and balance
After reconnection, burner startup, airflow measurement and controls checks confirm the new unit delivers what the booth or space needs. Balancing with existing exhaust finishes the job.
Planning a booth or oven project in Ohio
Crews mobilize from Houston; Ohio is roughly 1,000 miles away, so equipment, panels and tooling are staged and shipped ahead of the install crew.
Manufacturing in Ohio is concentrated around Columbus, Cleveland, Cincinnati, Dayton, and Toledo. The sectors most likely to be specifying spray booths, blast rooms, powder systems and cure ovens there include automotive assembly and suppliers, aerospace, steel and metal fabrication, and semiconductors.
Cold winters mean make-up air heaters are sized for sub-freezing intake, and booth or oven placement has to account for frost lines, snow loads on roof penetrations and winter slab work.
Frequently asked questions
Can the new unit go on our existing curb?
Sometimes with an adapter. Otherwise a new curb is installed.
Do we need a crane?
Usually for rooftop units. Lift planning is part of the job.
How long will we be without make-up air?
It depends on site conditions and lift planning. The goal is to minimize the gap.
Will our existing ductwork connect?
Usually with transitions. Duct size and location are checked before ordering.
Should we resize the replacement unit?
If exhaust has changed since the original install, yes. Check current exhaust before ordering.