A furnace replacement in Tucson is usually a one-day job once it’s scheduled, and the pro you’re matched with confirms the actual timing for your house. Climate Pros Tucson matches you with that pro. Here are the steps in order.

Do you need a furnace at all?

Maybe not. Tucson’s winters are mild, and a heat pump is the sensible default for many basin homes. A furnace makes sense when you already have natural gas from Southwest Gas and want to keep it. Read heat pump vs gas furnace before you decide.

What are the steps?

  1. Site visit. The pro looks at the existing furnace, ducts, gas line, venting and electrical.
  2. Load and sizing calculation. The City of Tucson requires load and sizing calculations for new and replacement HVAC equipment. Skip the guess based on the old unit’s size.
  3. Equipment selection. Choose the efficiency level, the fuel and the features.
  4. Permit. The City of Tucson requires a permit for new or replacement furnaces. The contractor pulls it, never us. The City’s fee schedule, effective July 1, 2026, lists a $150 trade permit for an air conditioner or heater repair or replacement, which includes two inspections (checked October 2026). The fee shows up on the contractor’s written quote. Rules outside the City can differ, so ask the pro which jurisdiction covers your address.
  5. Removal and set. The old unit comes out, and the new one goes in with the right clearances.
  6. Connections. Gas, venting, electrical, condensate if needed and duct connections.
  7. Startup and testing. The pro checks gas pressure, combustion, airflow and safety controls.
  8. Inspection. The jurisdiction’s inspector verifies the work, and you keep the paperwork.

What about safety?

A furnace burns fuel, so venting and combustion matter. Ask the pro to confirm the vent, and install carbon monoxide alarms. See carbon monoxide in a home.

Are there rebates?

Southwest Gas’s 2026 Arizona residential rebate application lists showerheads, clothes washers and windows. No furnace or HVAC rebate appears on it. TEP’s Efficient Home Program covers heat pumps, AC and related work, so a furnace on its own may not qualify. Confirm with each utility.

What should you check on the pro?

  • A valid license with the Arizona Registrar of Contractors at roc.az.gov.
  • A written scope that names the equipment, permit and cleanup.
  • Who pulls the permit and who schedules the inspection.
  • The manufacturer’s warranty terms. Read them and keep them with the receipt.

Should you replace the AC at the same time?

Often worth a look. If both are old, matching them can make sense. See replace furnace and AC together and furnace replacement cost. Read about furnace repair too, and the Tucson hub.

When to call us

When your furnace fails or you’re ready to replace it, a licensed pro can walk you through each step. Call (520) 353-2520 and we’ll match you with a licensed local pro.