Inside your Goodman air handler sits a self-contained electric heating system most homeowners never see: the heat strip kit. Elements, sequencers, contactors, limit switches, and wiring, all working in a precise sequence every time auxiliary or emergency heat is called. When something in that kit fails, the symptoms, no heat, runaway electric bills, tripped breakers, trace back to one of these components. This page is the equipment tour for Sarasota homeowners: what is in the kit, what each part does, and how failures map to parts.

Goodman pairs its strip kits with ComfortBridge communicating technology, which means the air handler’s controls coordinate strip staging with the rest of the system rather than firing elements blindly. Understanding that coordination is the key to understanding both normal operation and failure.

The elements: where heat comes from

The heart of the kit is a bank of nichrome resistance elements, coiled wire that glows hot when current passes through it, the same principle as a toaster, scaled up to heat a home. Air from the blower passes over the elements and carries the heat into your ductwork. Elements are simple and have no moving parts, which makes them reliable, but the wire fatigues with thermal cycling and eventually burns through, exactly like a lightbulb filament. An open element produces nothing; the system compensates with longer run times or heavier use of the remaining stages. Element replacement means matching genuine Goodman elements to the air handler model: correct wattage, correct physical fit, correct terminal configuration.

The sequencers: the staging conductors

Elements do not all switch on at once. That would hit your electrical panel with the entire load in a single instant. Sequencers stage them on and off in sequence, typically bringing stages online seconds apart and dropping them in reverse order. A sequencer is a heat-activated timing relay, and it is the most failure-prone part of the kit. Stuck closed, it leaves elements energized continuously: the house overheats or the electric bill climbs hard with no obvious cause. Failed open, its stage never fires: weak heat on the coldest nights. Sequencer failure is the number-one cause of the mystery high bill, and the number-one thing a proper diagnostic checks after the elements themselves.

Contactors, limits, and wiring: the support system

  • Contactors and relays handle the high-current switching the sequencers command. Their contacts pit and wear with every cycle; welded contacts keep a stage energized, pitted ones cause intermittent heat.
  • High-limit switches are the safety net. Mounted near the elements, they cut power if temperatures climb too high, from restricted airflow, a failed blower, or a stuck sequencer. A tripped limit that will not reset is telling you something overheated; a bypassed limit is a fire hazard. Limits are never jumped out, ever.
  • Wiring and terminals carry the full strip amperage. Heat-loosened lugs and corroded terminals create resistance, and resistance at high current creates heat where it does not belong. Every strip service includes terminal inspection and torque verification.
  • Breakers and fusing are the final protection. The strip kit’s amperage draw dictates breaker sizing and wire gauge, and the most common installation error is a supply that does not match the kit. A breaker that trips repeatedly is doing its job. The fault is downstream.

How ComfortBridge coordinates the kit

On ComfortBridge-equipped Goodman systems, strip staging is not just timed, it is managed. The communicating controls know the outdoor temperature, the heat pump’s capacity at that temperature, and the home’s demand, and they call strip stages accordingly: supplementing the heat pump on the coldest nights, taking over in emergency mode, and standing down the moment they are not needed. When the coordination works, strips run the minimum necessary. When a component fails, a sequencer ignoring commands or a limit tripping falsely, the system’s own operating history usually records the anomaly, which is why a technician reads the ComfortBridge history before opening the air handler.

Servicing the kit in Sarasota

Strip kit service follows a fixed order: de-energize and verify zero voltage, test elements for continuity, test sequencers for staging behavior, inspect contactors, limits, terminals, and wiring, verify breaker sizing against the kit rating, then run a full staged heating cycle confirming each stage energizes and de-energizes in sequence. Failed parts are replaced with genuine Goodman components matched to the model. Our technicians perform this service across Sarasota with same-day dispatch, and 24/7 emergency service covers no-heat situations that cannot wait. Warranty-safe practices throughout keep your manufacturer coverage intact.

What is actually inside a heat strip kit?

Nichrome resistance elements, sequencers that stage them, contactors and relays for high-current switching, high-limit safety switches, and the wiring and terminals carrying the load, all mounted in the air handler and coordinated by the system’s controls.

Which part fails most often?

Sequencers. Their heat-activated timing mechanism wears with every cycle, and a stuck sequencer is the classic cause of elements running continuously, the mystery high electric bill with no other symptom.

Why does my breaker keep tripping when the heat runs?

A repeatedly tripping breaker is protecting you from a fault, often a shorted element or failing contactor, or the breaker and wiring are undersized for the strip kit. Do not keep resetting it; have the circuit and the kit tested.

Can strips be repaired, or must the kit be replaced?

Individual components, elements, sequencers, contactors, limits, are replaceable with genuine Goodman parts. Full kit replacement is only needed when multiple components have failed or the kit is mismatched to the home’s needs.

Do you offer same-day service in Sarasota?

Yes. Same-day dispatch across Sarasota for heat strip diagnostics, component replacement, and kit service, backed by 24/7 emergency service when a heating failure cannot wait.