Fast, Reliable Heating & Furnace Across Los Gatos
Heating & furnace repair in Los Gatos typically costs $150–$700 for repairs and $3,500–$7,500 for full replacement, with most service calls completed same-day. We’re Stonegate Heating & Air California, and our Heating & Furnace team makes the run from Sacramento to Los Gatos regularly — 16 years, nearly 500 reviews, and owner Jason Trent on-site as Field Supervisor. Whether you’ve got a gas furnace in a 95032 ranch home off Los Gatos-Almaden Road or a propane system in the hills above Lexington Reservoir, we bring the right equipment and the right parts so we don’t waste your time with return trips. Call (855) 467-1888 for a free estimate.
Why Stonegate Heating & Air California Is Los Gatos’s Preferred Heating & Furnace Company
Los Gatos homeowners don’t call us because we’re the closest contractor. They call because they’ve already dealt with dispatchers who can’t find Chemeketa Park on a map and techs who show up without propane-rated parts.
Our 499 verified reviews at 4.7 stars include plenty from Los Gatos addresses — from downtown Craftsman restorations to mountain properties off Summit Road. That volume matters. It means we’ve actually worked on the specific equipment, fuel types, and access challenges this town throws at us.
Jason Trent doesn’t just own the company. He’s Field Supervisor, which means he’s physically on job sites, not managing from a back office in another county. When we dispatch to Los Gatos, we’re sending experienced hands with the authority to make equipment decisions on the spot.
We also know the roads. A 95033 service call isn’t a quick hop off 85. Summit Road, Aldercroft Heights, the winding routes above the reservoir — we’ve made those drives. We plan for them. That local logistics knowledge translates to realistic arrival windows and trucks stocked for the actual conditions.
Our Heating & Furnace Services in Los Gatos
Furnace Repair
Furnace repair in Los Gatos runs $150–$700 depending on the component and access. On the 95032 flatlands, we see plenty of failed ignitors and gas valves in 1960s–1970s ranch furnaces that have cycled through decades of Santa Clara Valley summers. Up in 95033, the calls are different: propane combustion issues, pressure regulator problems, and cracks from equipment that wasn’t properly derated for LP fuel. We carry ignitors, gas valves, and control boards for Carrier, Trane, Lennox, and Bryant systems — the brands we see most in Los Gatos homes.
Furnace Replacement
A full furnace replacement in Los Gatos costs $3,500–$7,500 installed. This is where the 95030/95032 versus 95033 divide really matters. Valley floor homes usually swap gas-for-gas, though we’re increasingly installing heat pump hybrids for homeowners who want to get ahead of electrification trends. Mountain homes need LP-rated equipment, period. We serviced a 5-ton Carrier propane furnace in a Chemeketa Park home off Summit Road where the access road added 35 minutes each way. The homeowner’s 500-gallon tank was fine, but the furnace’s heat exchanger had cracked from years of propane combustion without proper derating — we replaced it with a new LP-rated Bryant model in one trip. That’s the kind of job where sending a tech who’s never worked propane becomes an expensive mistake.
Furnace Tune-Up
Tune-ups run $80–$200 and we recommend them annually before the heating season. For 95032 ranch homes with original ductwork, a tune-up includes checking heat exchanger integrity and measuring airflow through undersized runs. In 95033 mountain homes, we add propane pressure verification, burner orifice inspection, and tank gauge confirmation. The heating degree-days are higher up there. Equipment works harder. Small problems become big faster.
Heat Exchanger Repair & Replacement
Heat exchanger work in Los Gatos falls in the $150–$700 range for repair, though severe cracking usually means furnace replacement. This is a safety-critical component — cracked exchangers can leak carbon monoxide. We see heat exchanger failures accelerated by two local conditions: propane combustion without proper derating in 95033 (hotter burn, more thermal stress), and decades of short-cycling in 95032 homes where original furnaces are oversized for modernized, better-insulated spaces. Jason Trent checks every heat exchanger replacement personally. No exceptions.
Ignitor Replacement
Ignitor replacement is one of the most common calls we get from Los Gatos, especially in early fall when furnaces fire up after months of disuse. Hot surface ignitors in Carrier and Lennox systems tend to fail predictably after 3–5 years. We stock the common models and can usually swap one in a single visit. For 95033 mountain homes, we also verify that the propane-to-air mixture is correct — a weak ignitor combined with rich propane combustion is a hard-start problem that gets misdiagnosed.
Gas Valve Repair
Gas valve issues show up as furnaces that won’t fire, or that short-cycle erratically. In Los Gatos’s older 95030 homes, we sometimes find original valves that have never been serviced. In 95033, propane-rated valves are a different part number with different pressure ratings. Sending a tech who grabs the wrong valve off the truck is a wasted day for a mountain homeowner. We don’t do that.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Los Gatos
We’re certified and experienced on nine major HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. In Los Gatos specifically, we see a lot of Carrier and Bryant in the mountain homes — solid equipment, but it needs to be the LP-rated variant. Trane and Lennox show up frequently in the 95032 ranches. We stock common parts for all four brands and can source same-day for less common items. That matters when your furnace quits on a January night and the temperature’s dropping through the 30s.
Common Heating & Furnace Problems We See in Los Gatos Homes
- Propane furnaces failing from improper derating in 95033. Mountain homes above Lexington Reservoir don’t have natural gas. Equipment installed by contractors unfamiliar with LP requirements often runs too rich, too hot, and cracks heat exchangers prematurely. We check combustion analysis on every propane service call.
- Voltage drops on long rural drives without dedicated circuits. Some Los Gatos mountain properties have service panels at the road and long runs to detached shops or secondary structures. Furnace blowers and ignitors draw steady current. Undersized wiring causes low-voltage conditions that burn out control boards. We measure voltage under load, not just at rest.
- Oversized furnaces short-cycling in 95032 ranch homes. Original 1950s–1970s equipment was often sized for uninsulated construction. After window upgrades and attic insulation, those furnaces heat the space too quickly, shut off, and repeat. The constant cycling wears heat exchangers and wastes fuel. We calculate proper load before recommending replacement.
- Limited attic clearance in downtown 95030 Craftsman homes. No original ductwork, tight crawl spaces, and preserved architectural features mean standard furnace-and-duct retrofits often don’t fit. We’ve installed ductless mini-splits and compact high-wall units in these homes when conventional forced air isn’t practical.
Pricing for Heating & Furnace in Los Gatos, CA
| Service | Price Range in Los Gatos |
|---|---|
| Furnace Repair | $150–$700 |
| Furnace Replacement | $3,500–$7,500 |
| Heat Exchanger Repair/Replacement | $150–$700 |
| Annual Tune-Up | $80–$200 |
What moves you within these ranges? Access difficulty for 95033 mountain properties can add labor time. Propane-rated equipment costs more than equivalent natural gas models. Older 95030 homes may need electrical or venting upgrades to meet current code. We don’t guess over the phone. Jason Trent or one of our senior techs comes out, looks at your specific setup, and gives you a written estimate before any work starts. Estimates are free. Call (855) 467-1888 to schedule.
We Also Serve Cities Near Los Gatos
Our service radius covers Saratoga to the north, Campbell and Communications Hill to the east, and Cupertino to the northeast. Each has different housing stock and different heating patterns than Los Gatos — Saratoga’s similar hillside challenges, Campbell’s flat suburban grid, Cupertino’s newer construction. Our Heating & Furnace team adjusts for each. If you’re on the border between Los Gatos and one of these cities, call us and we’ll confirm coverage from your address.
Serving Los Gatos, CA — Our Local Coverage Area
We’re based in the Los Gatos area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs — Heating & Furnace in Los Gatos
Yes. Propane furnaces require LP-rated burners, a different gas valve, and proper derating for the fuel’s higher BTU content. Standard natural gas equipment installed on propane will run dangerously hot and fail prematurely. We stock LP conversion kits and factory-rated propane furnaces for 95033 homes, and we verify your propane tank size and regulator capacity before quoting any replacement. Call (855) 467-1888 and we’ll confirm your fuel setup.
Yes, we regularly service Aldercroft Heights, Chemeketa Park, and other 95033 communities off Summit Road. We plan for the access time — typically 30–40 minutes added to the standard drive — and we bring fully stocked trucks so we’re not making multiple trips. Our techs are experienced with the steep grades, limited turnarounds, and propane-specific equipment these homes require. Call (855) 467-1888 to book; we’ll give you a realistic arrival window.
Pre-WWII Craftsman and Victorian homes in 95030 often lack ductwork entirely and have minimal attic or crawl space for retrofitting. Even when a furnace fits, the heat distribution through added ducts is uneven. Many of these homes weren’t designed for forced air. We’ve solved this with ductless mini-split systems, high-wall units, or carefully designed compact duct systems that preserve the home’s character. Call (855) 467-1888 and Jason Trent can assess your specific layout.
Yes, and arguably more so than for valley-floor properties. The 95033 zone accumulates more heating degree-days, so equipment runs longer and harder. Propane combustion produces different residue patterns than natural gas. Annual tune-ups catch heat exchanger cracks, burner deposits, and pressure irregularities before they become safety hazards or mid-winter failures. At $80–$200, it’s inexpensive insurance against a January emergency call. Schedule yours at (855) 467-1888.
We install LP-rated models from Carrier, Bryant, Trane, and Lennox most frequently in 95033. The specific recommendation depends on your home’s heat load, propane tank size, and whether you want to stay with propane or transition to electric heat pumps. All four brands make durable propane equipment when properly specified and derated. Jason Trent personally reviews every mountain home proposal to confirm fuel compatibility. Call (855) 467-1888 to discuss options for your property.
Ready to get your Los Gatos heating system sorted? Whether you’re in a 95032 ranch with a failing gas valve or a 95033 mountain home that needs propane-rated equipment, we’ll come out, diagnose honestly, and fix it without the runaround. Free estimates. Owner on the job. Call Stonegate Heating & Air California at (855) 467-1888.
Written by Jason Trent, Owner and Field Supervisor at Stonegate Heating & Air California, serving Los Gatos and the greater Sacramento region since 2008.