Heating and Furnace Repair in South Orange County

South Orange County winters are mild, which is exactly why heating problems tend to hide until the first cold night of the season. A furnace or heat pump that sat idle all summer can fail the first time it is asked to work. Fortt Mechanical Inc is a family owned HVAC company run by Lucas Fortt and his dad, Art, based in Mission Viejo. We repair heating systems in existing homes, and we start every call the same way: with a real diagnosis, not a guess.

Common Heating Problems We Troubleshoot

Heating calls usually come down to a handful of causes, and most are repairable the same visit or with a single part:

  • Ignition problems, including failed igniters and dirty flame sensors

  • A furnace that starts, runs briefly, and shuts off

  • Blower motor or capacitor failures that stop air from moving

  • Thermostat and control issues that look like equipment failure

  • Heat pumps that blow cool air or lean on auxiliary heat too often

  • Safety switches and limit controls doing their job because something else is wrong

We work through the system in order, confirm what failed and why, and explain your options before any work begins. If a repair makes sense, we do the repair. If the equipment is truly at the end of its life, we will tell you that plainly and show you the findings behind it.

Heating Safety Comes With Every Diagnosis

A heating diagnosis is also a safety check. We look at the condition of the heat exchanger, the venting, and the combustion area while we troubleshoot, because a furnace that heats is not the same as a furnace that heats safely. If we find something that concerns us, you hear about it directly, with what it means and what we recommend, and the decision stays yours.

Where We Work

We handle furnace and heat pump repair across Mission Viejo, Lake Forest, Laguna Niguel, Aliso Viejo, Rancho Santa Margarita, Ladera Ranch, Laguna Hills, Irvine, Dana Point, and San Juan Capistrano, and further across Southern California for the right job. When you call, you reach Art or Lucas, and one of us does the work.

Stay Ahead of the Cold Nights

A maintenance visit before the heating season is the simplest way to avoid a cold night surprise. Maintenance is $149 per unit per visit, filters included, paid per visit, with no prepaid plan or contract. We confirm you still want the visit before we schedule it, each and every time.

Call for Heating Repair

If your heat is out, running unevenly, or making a noise it did not make last winter, call Fortt Mechanical at (949) 201-0491, or use the Request Service form on our Contact page. You will get a careful diagnosis and an honest answer about what your system needs.