Ignitor Replacement in San Diego, CA

Ignitor Replacement in San Diego, CA

A failed ignitor is one of the most common reasons a furnace stops producing heat – and in San Diego, where homes often go months between heating cycles, it’s also one of the most preventable surprises. Our Heating & Furnace services cover this exact issue. When the ignitor fails, your furnace can’t light its burners, which means no heat regardless of how high you set the thermostat. The good news: ignitor replacement is typically a same-day repair, and it costs a fraction of what most homeowners expect.

At Redwood Heating & Air, Gregory Hahn handles ignitor diagnostics and replacement the way a Master Technician should – by confirming the ignitor is actually the problem before replacing anything. That’s why we’re known for the Best Heating & Furnace in San Diego, CA. Over 13 years serving San Diego homeowners and commercial clients, we’ve seen plenty of cases where a rushed tech swapped an ignitor and left, only for the customer to call back a week later with the same no-heat complaint. That doesn’t happen here. Our diagnostic approach traces the fault to its source, so the repair sticks.

We work on ignitor systems across nine major equipment brands, including Trane, Lennox, Goodman, and Rheem – so if your furnace was installed by whoever was cheapest at the time, we know it. If you’re dealing with a furnace that won’t fire up, call us at (844) 875-9451 or read on to understand what we check, what it costs, and what to expect from a proper ignitor replacement in San Diego.

This page covers our ignitor replacement service specifically. For the full scope of furnace and heating services we offer, visit our Heating & Furnace in San Diego page.

Why San Diego Furnaces Fail at the Ignitor

San Diego’s climate creates a specific HVAC pattern that accelerates ignitor wear in ways that aren’t obvious at first glance, which is why choosing the Best HVAC System for Cold Climate in San Diego, CA matters for long-term reliability. Most of the region – from Clairemont to Chula Vista, Rancho Bernardo to Ocean Beach – doesn’t run heating systems hard for long stretches. Instead, furnaces sit dormant through spring, summer, and most of fall, then get switched on during the first cold snap in November or December.

That dormancy-then-demand cycle is hard on hot surface ignitors. Silicon nitride and silicon carbide ignitors are brittle components that crack under thermal shock – rapid heating after a long cold soak. Add San Diego’s coastal moisture and occasional marine layer humidity to the mix, and you’ve got conditions that accelerate oxidation on ignitor surfaces. Inland areas like El Cajon and Santee also deal with dust accumulation during dry months, which settles onto ignitor surfaces and changes their heat profile.

Goodman and Rheem furnaces installed in the 2010s, which are extremely common throughout San Diego County, often use silicon carbide ignitors with an average lifespan of 4 to 7 years under normal use. In our market, where furnaces might only run 60 to 90 days per year, “normal use” still means those ignitors can fail simply from age and thermal cycling rather than overuse.

Gregory Hahn founded Redwood Heating & Air with 428 verified reviews averaging 4.6 stars built on exactly this kind of local knowledge – understanding why San Diego systems fail the way they do, not just how to swap parts.

When You Need Ignitor Replacement

Not every no-heat call points to the ignitor, but certain symptoms make it the primary suspect. Here’s what we see in San Diego homes that typically leads to an ignitor replacement:

• Furnace starts its cycle but no heat comes out. You hear the system turn on – the draft inducer fan runs, maybe you hear a click – but the burners never light and the blower eventually shuts off. This is the classic ignitor failure sequence on most modern furnaces, including Trane and Lennox systems common in newer San Diego builds.
• Furnace attempts to ignite multiple times, then locks out. Many furnaces make two or three ignition attempts before entering a lockout mode. If your thermostat is calling for heat and the system keeps trying and failing, an ignitor that’s cracked or has lost continuity is a likely cause.
• First cold snap of the season triggers the no-heat complaint. In neighborhoods like Scripps Ranch and Poway where homes sit at slightly higher elevations with cooler nights, the first real cold night of the year is when we get the most ignitor calls. A dormant furnace suddenly asked to work often reveals an ignitor that cracked over the off-season.
• Error codes pointing to ignition failure. Modern furnaces from Goodman, Rheem, and other brands flash diagnostic LED codes. An ignition failure code on the control board isn’t always an ignitor problem – but it tells us exactly where to look first.
• Visible cracks or burn marks on the ignitor surface. When we pull the ignitor during a diagnostic, a cracked silicon carbide ignitor is often visually obvious. If you’ve had a tech look inside your furnace and noticed a broken ceramic element, that’s your ignitor.
• Ignitor not glowing during startup. A functioning hot surface ignitor should glow bright orange within 15 to 30 seconds of the furnace receiving a call for heat. If you can safely view the ignitor window and see nothing, or only a faint glow that doesn’t hold, the component has likely failed. Note: do not attempt to handle or test the ignitor yourself – these components carry line voltage and the surrounding area contains gas line connections that require a trained technician to work around safely.

Our Ignitor Replacement Process

A lot of HVAC companies treat ignitor replacement as a five-minute parts swap. We treat it as a diagnostic-first service call, because the ignitor is sometimes a symptom rather than the root cause. Here’s how we handle it:

1. System history and symptom review. Before we open the furnace, we ask the right questions. How old is the system? When did it last run? What error codes has it displayed? For commercial clients in San Diego’s Mission Valley or Kearny Mesa office corridors, we also check service logs if they’re available. Context speeds up accurate diagnosis.
2. Control board and wiring inspection. The ignitor doesn’t operate in isolation – it receives its signal from the control board and runs through a dedicated circuit. We check for voltage at the ignitor terminals during a call for heat. If voltage is present but the ignitor isn’t heating, the ignitor is confirmed bad. If voltage is absent, the problem is upstream in the board or wiring, and replacing just the ignitor won’t fix anything.
3. Ignitor continuity and resistance test. Using a multimeter, we test the ignitor’s resistance. Silicon nitride ignitors and silicon carbide ignitors have different acceptable resistance ranges – knowing your system’s brand and model matters here. A Lennox or Trane furnace will have different specs than a Goodman or Rheem, and reading those specs correctly is part of accurate diagnosis.
4. Replacement with the correct part. We carry common ignitor types on the truck for San Diego’s most prevalent furnace brands. The replacement ignitor is always matched to the OEM specification – not a universal part that “almost fits.” An improperly matched ignitor can run too hot, fail prematurely, or damage adjacent components like the flame sensor or heat exchanger.
5. Post-replacement startup and combustion verification. After the new ignitor is installed, we run the furnace through a complete startup cycle. We confirm ignition timing, burner flame pattern, and that the system transitions correctly from ignition through heating mode. We also check the flame sensor at this step, since a weak sensor is often the reason a perfectly good ignitor appears to fail.
6. System-wide check before we leave. We look at the heat exchanger for visible cracks, check the flue draft, and verify the filter condition. If we see something that needs attention, we tell you – straightforwardly, with what it means and what it costs, not with urgency sales pressure. You make the call.

Ignitor Replacement Pricing in San Diego

Ignitor replacement in San Diego typically costs between $150 and $380, depending on the furnace brand, ignitor type, and whether additional repairs are needed at the same visit. That range reflects real market pricing across San Diego County – not a lowball estimate padded with hidden fees on arrival.

A few things affect where your job lands in that range. Older Goodman or Rheem units from the early 2010s sometimes require ignitors that are no longer stocked locally and need to be sourced, which can add time. Lennox and Trane furnaces in higher-end Rancho Santa Fe or La Jolla homes sometimes have integrated ignitor assemblies that take longer to access. Commercial furnaces in multi-unit properties in San Diego’s Mission Hills or North Park corridors often have different part requirements entirely.

We provide free estimates before any repair. Call (844) 875-9451 and we’ll give you a clear number before we start.

FAQs – Ignitor Replacement in San Diego

How long does ignitor replacement take in San Diego?

For Emergency Heating & Furnace in San Diego, CA, most ignitor replacements take between 45 minutes and 90 minutes from arrival to a running furnace. That includes our diagnostic steps – we don’t skip those just to speed up the job. If the repair turns out to be more involved, such as a control board issue discovered during diagnosis, we’ll tell you before proceeding with anything additional. For urgent situations, call (844) 875-9451 and we’ll tell you our current availability.

How long do furnace ignitors last?

Silicon nitride ignitors typically last 7 to 10 years; silicon carbide ignitors average 4 to 7 years. In San Diego, where furnaces run intermittently rather than continuously through a cold season, calendar age often matters more than run-hours. A 10-year-old furnace in Encinitas or Chula Vista that’s only used a few months per year can still have an ignitor at or past its reliable service life. If your system is over eight years old and you haven’t had the ignitor inspected, it’s worth checking before the next cold snap.

Is it cheaper to repair or replace the furnace when the ignitor fails?

An ignitor failure by itself is almost never a reason to replace a furnace. At $150 to $380 for a repair versus $3,500 to $6,000 or more for a new system, the math is straightforward as long as the rest of the furnace is in decent shape. Where we’d start a different conversation is if the system is over 18 years old, has a cracked heat exchanger, or has needed two or three repairs in the same season – those scenarios sometimes shift the calculus. Gregory Hahn will give you a straight answer on that during the diagnostic, not a sales pitch. Call (844) 875-9451 for an honest assessment.

Can I replace a furnace ignitor myself?

We’d advise against it. Hot surface ignitors carry line voltage during operation, and they sit adjacent to gas burners and supply lines inside the furnace cabinet. A cracked or improperly seated ignitor can fail immediately or, in worse cases, contribute to an unsafe ignition sequence. Beyond the safety concern, misidentifying an ignitor problem – when the real fault is the control board or flame sensor – means spending money on a part that doesn’t fix anything. A trained technician with the right test equipment will diagnose and repair it correctly the first time. Call us at (844) 875-9451 and we’ll often get there the same day.

Key Takeaways

• Ignitor failure is one of the most common causes of a furnace that won’t heat in San Diego – and it’s almost always a same-day fix.
• San Diego’s climate, with long dormant periods and abrupt heating demands, accelerates ignitor wear on local furnaces from brands like Goodman and Rheem.
• Proper ignitor replacement requires voltage testing and continuity checks before swapping parts – not a parts-first approach.
• Pricing in San Diego runs $150 to $380 depending on ignitor type, system age, and whether additional components need attention at the same visit.
• Gregory Hahn leads every technical decision at Redwood Heating & Air, with 13 years of San Diego HVAC experience and 428 verified reviews averaging 4.6 stars behind the work.
• We service ignitors on Trane, Lennox, Goodman, Rheem, and six other major HVAC brands – so we know your equipment regardless of who installed it.

Schedule Your Ignitor Replacement in San Diego

If your furnace isn’t producing heat, don’t wait through another cold night in San Diego to find out why. Gregory Hahn and the Redwood Heating & Air team are ready to diagnose the problem correctly and fix it the same day in most cases. We’ve built 428 verified reviews across 13 years by doing the job right – not by rushing through calls and hoping the repair holds.

Call (844) 875-9451 for a free estimate on ignitor replacement anywhere in San Diego. We’ll give you a straight answer on what’s wrong, what it costs, and what to expect – before we start any work. You can also visit our home page to learn more about our full range of services across San Diego County.

Written by Gregory Hahn, Founder & Master Technician at Redwood Heating & Air San Diego, serving San Diego since 2012.