Furnace Repair in Palo Alto - Fixed Today, No Surprise Invoice

Fast, Reliable Furnace Repair Across Palo Alto

Furnace repair in Palo Alto typically costs between $150 and $700, and most calls can be diagnosed the same day. If your heat cuts out in a mid-century Eichler off Oregon Expressway or a newer build near the Baylands, you’ll want a technician who knows why those two homes fail so differently. That’s the work we do. Call (669) 800-4179 and you’ll get a live person, a written price before any work starts, and a repair that’s covered in writing for 365 days.

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Why Cold Harbour Heating and Air San Jose Is Palo Alto’s Preferred Furnace Repair Company

Palo Alto is a city of two very different furnaces. In the Eichler tracts of Greenmeadow and Fairmeadow, we’re working on original 1950s and 60s radiant boilers buried under concrete slabs. Over in Crescent Park and Professorville, we’re servicing newer multi-zone systems in remodeled homes where the ductwork was added decades after the house was built. Our technicians are trained on nine major brands, including Trane, Lennox, and Goodman, so the person who arrives at your door can work on whatever is already in your home. Every visit starts the same way: a written price before tools come out, and a written 365-Day Done Right Promise before the technician leaves. Founded in 2003 as part of the Kingswell network of independently owned and operated HVAC businesses, we hold to a simple standard: say the price before the work, show up in the window we gave you, leave the place cleaner than we found it, and come back at no charge if the repair fails inside a year.

Gas Furnace Repair in Palo Alto

Gas Furnace Repair in Palo Alto means working with systems that range from original 1960s units in Fairmeadow to high-efficiency condensing furnaces in recently remodeled homes near Duveneck. The job starts with a diagnostic: we test the ignitor, gas valve, flame sensor, and heat exchanger, then hand you a written price before any repair begins. A typical gas furnace repair in Palo Alto runs $150 to $700, depending on the part and the system. For older furnaces in Eichler homes, the failure is often the heat exchanger or a corroded zone valve on a radiant loop. For newer systems, it’s more commonly an ignitor or a pressure switch. Either way, the repair is covered in writing for a full year.

Ignitor and Flame Sensor Work

Most “furnace won’t light” calls in Palo Alto come down to a failed ignitor or a dirty flame sensor. On a Trane or Goodman furnace, an ignitor replacement typically runs $150 to $280, parts and labor included. The fix usually takes under an hour, and we carry common ignitors on the truck, which matters on a cold night when the house off Middlefield Road won’t warm up.

Gas Valve Diagnostics

When a gas valve sticks, the furnace either won’t fire or fires erratically. In older Palo Alto homes with original equipment, a corroded gas valve can also leak, which is a genuine safety issue. This is not a job to guess at. We test the valve with a manometer, replace it if needed, and verify combustion before we leave. The work is done by a background-checked, uniformed technician, and the repair is guaranteed in writing.

Furnace Tune Up in Palo Alto

A Furnace Tune Up in Palo Alto costs $80 to $200 and is the single best way to catch a cracked heat exchanger before it becomes a carbon monoxide problem. In a city where many furnaces are original to 1950s and 60s Eichler homes, that check matters more than in neighborhoods with newer housing stock. Our tune-up includes testing the heat exchanger, checking gas pressure, cleaning the flame sensor, testing the ignitor, and measuring static pressure where ducted systems exist. You get a written report of what we found and what it costs to fix anything that needs attention. Our technicians are not paid on what they sell, so the report tells you what you need, not what pads a commission.

Heat Exchanger Safety Check

In Palo Alto’s older radiant homes, original furnaces lack the modern safety sensors that shut a system down when the heat exchanger cracks. That means a failing unit can run for weeks before a CO alarm trips. During a tune-up, we inspect the exchanger visually and with a combustion analyzer. If it’s cracked, we show you, explain the risk, and give you a written price for repair or replacement.

Radiant Loop Inspection

For Eichler owners in neighborhoods like Greenmeadow, a furnace that runs constantly but never satisfies the thermostat is often a hydronic problem, not a combustion problem. Corroded zone valves, air in the loops, or a failing circulator pump mimic furnace failure. We check the loop temperature, the pump, and the zone valves, and we explain what we find in plain English. The cost stays within the $80 to $200 tune-up range unless a part is actually bad, in which case you get a written price before any replacement work.

Trusted Brands We Service in Palo Alto

Our Palo Alto trucks are stocked with parts for the brands most common in this city’s housing: Trane, Lennox, Goodman, and Rheem. Mid-century Eichlers often still run original equipment no longer in production, so we source replacements from local Bay Area supply houses and have them delivered the same day in most cases. Newer remodels in Barron Park and College Terrace favor high-efficiency Goodman or Lennox systems, and we can repair those on the first visit because the parts are already on the truck.

Common Furnace Repair Problems We See in Palo Alto Homes

• Cracked heat exchangers in original 1950s and 60s furnaces. Eichler-era units in neighborhoods like Greenmeadow and Fairmeadow predate modern safety sensors, so a cracked exchanger can go undetected until a CO alarm sounds. We check this on every tune-up and on any repair call where the system is original.
• Cold rooms in slab-on-grade radiant homes. When a Palo Alto Eichler heats unevenly, the furnace is often fine and the problem is a stuck zone valve or air in the hydronic loop. These homes have no ductwork, so the fix is loop work, not furnace work. That distinction saves Palo Alto homeowners from paying for a furnace repair they don’t need.
• Short-cycling furnaces in remodeled luxury homes. Multi-zone systems in newer Palo Alto builds often have undersized duct branches, which raises static pressure and trips a limit switch. The unit shuts down early, rooms stay cold, and a homeowner assumes the furnace is failing. The fix is often duct balancing or an airflow correction, not a furnace replacement.
• Ignitor failures on cold winter mornings. Palo Alto’s cool, wet winters put real demand on ignitors, especially in systems that cycle on and off frequently. A brittle ignitor cracks on the first cold night, and the furnace won’t light. We carry replacements for all major brands on the truck.

Pricing for Furnace Repair in Palo Alto, CA

Palo Alto’s Two Furnace Worlds

What makes furnace work in Palo Alto genuinely different is the housing stock. The original Eichler tracts, Greenmeadow, Fairmeadow, and parts of south Palo Alto, were built in the 1950s and 60s with radiant heating systems embedded in concrete slab floors. There is often no ductwork, no air handler, and no easy path to central air. Furnace repair in these homes routinely means diagnosing hydronic zones, not just swapping a gas valve like you would on a conventional forced-air system in neighboring Menlo Park. A “simple” furnace replacement in an Eichler turns into a hydronic-to-air conversion if the homeowner wants cooling, and that means cutting into the slab or going with ductless mini-splits.

Last winter we were called to a mid-century Eichler off Greer Road where the furnace kept short-cycling. Our tech traced it to a failing heat exchanger on an original 1963 radiant boiler, checked static pressure in the loop, and replaced a corroded zone valve, restoring heat without cutting into the slab. That’s the kind of call that doesn’t look like a standard furnace repair on paper, but it’s exactly what we prepare for in Palo Alto.

On the other side of town, newer luxury builds and remodels in Crescent Park, Professorville, and University South demand a different skill set. These homes often have zoned systems with high-efficiency furnaces, smart thermostats, and filtration. When one of these systems misbehaves, the culprit is often undersized duct branches causing high static pressure, not a failed furnace. We measure that pressure and correct the airflow instead of selling a furnace replacement. Palo Alto’s strict electrification reach codes also push replacement toward heat pumps, so when a furnace in a remodeled home does need replacing, the conversation usually includes a heat pump option. We’ll walk you through it in plain English, with a written price for each path.

We Also Serve Cities Near Palo Alto

Our Furnace Repair team covers Palo Alto and the surrounding communities, including Stanford, Menlo Park, Los Altos, and Redwood City. Whether you’re in a College Terrace Eichler or a newer home near the Stanford campus, the same written guarantee and upfront pricing apply. Call (669) 800-4179 and a live person will answer, no matter the hour.

FAQs About Furnace Repair in Palo Alto