State homeowner resources
Keep heating and cooling service histories together.
Ask the local building department about requirements for the specific residential project. A statewide reference alone does not establish every local requirement or a provider's suitability for the work.
Start with the city guide below, then choose repair, installation or maintenance. Your equipment and the work you need determine the questions to ask before arranging a visit.
Official state resource
Use the official resource to research provider credentials and consumer information. Confirm the requirements for the specific work and address with the appropriate authority.
Visit the official resourceOhio Department of Commerce contractor resources are a starting point for research, not a determination of every requirement for a residential address. Ask the business and local authority about the specific project and applicable credentials. Keep that confirmation separate from the equipment selection and the installation price.
A furnace-only proposal, an AC-only proposal and a combined project have different boundaries. Identify retained components and related work before comparing totals. Columbus guides also keep heating and cooling histories connected so seasonal observations remain useful background instead of being treated as proof of a recurring fault.
City guides
State whether the problem occurs in heating mode, cooling mode or both. Identify shared controls from your records if known, and mention a recent thermostat change or service visit. Avoid assuming the newest symptom has the same cause as an earlier repair. A short timeline helps keep the request specific.
A location guide does not establish statewide service coverage. The provider must confirm the actual service address, ZIP code, equipment and requested work before an appointment can be arranged.
Make an informed decision