Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Before
After
Before
After
Before
AfterFast, Reliable Furnace Repair Across Ontario
Furnace repair in Ontario, CA typically runs between $150 and $700, and most jobs are done same-day when you call before noon. We dispatch local crews from our Inland Empire office who know the tract housing near the 60, the neighborhoods off Vineyard, and the older stock around Euclid. Call (361) 306-9515 for a written quote before any work starts. Live person, 24/7. Not a queue.
Why Dalton Heating & Air Is Ontario’s Preferred Furnace Repair Company
Homeowners in Ontario call us because the price we quote is the price you pay. Every job gets a written estimate before our tech touches the furnace. Every repair carries a written one-year guarantee. If the repair fails in that window, we come back at no charge. That’s The Garrison Standard, and it’s been in place since 2003.
Ontario residents see our uniformed, background-checked technicians arrive inside the scheduled window. You know who’s coming before they park. Our techs are factory-trained on Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. That matters when a 1990s Rheem furnace off Holt Blvd needs a gas valve that isn’t on the local supply house shelf. We carry common Ontario parts on the truck.
Marco Benitez, who leads the Dalton Heating & Air team, holds every tech to The Garrison Code: arrive inside the stated window, put the price in writing before starting, do the job by the book, leave the site clean, and stand behind the work for a full year.
Our Furnace Repair team serves Ontario daily, including emergency no-heat calls when temperatures drop into the 30s overnight.
Boiler Repair in Ontario
Boiler repair in Ontario is less common than gas furnace work, but the older homes north of the 10 and around Chaffey High School occasionally run hydronic systems. When a boiler loses pressure or a circulator pump fails, you lose heat in every room at once. The fix often involves replacing a faulty pump, bleeding air from the radiators, or replacing an expansion tank. Parts are not always on local shelves, so our techs confirm the exact model before rolling out.
Circulator Pump and Zone Valve Work
A failed circulator pump means hot water never leaves the boiler. We test amp draw on the pump and the zone valve end switches before replacing anything. Ontario boiler jobs of this type usually land between $150 and $700, depending on whether we’re swapping a pump motor or replacing the full assembly.
Boiler Heat Exchanger Inspection
Any time a boiler in Ontario starts rumbling or kicking off on the high-limit switch, we inspect the heat exchanger for sediment and cracks. Hard water in the Inland Empire accelerates scale buildup. A cracked boiler heat exchanger is a carbon monoxide risk, and we will red-tag the unit rather than band-aid it.
Gas Furnace Repair in Ontario
Gas furnace repair in Ontario covers the majority of calls we run from November through February. The city sits at the base of the San Gabriels, and winter nights routinely drop into the 30s. A gas furnace is the right tool for that cold. Common repairs include igniter replacement, flame sensor cleaning, gas valve swaps, and blower motor work. Most Ontario gas furnace calls fall between $150 and $450; heat exchanger or ECM blower motor jobs push toward $700.
Ignitor and Flame Sensor Failures
Ignitors crack from years of thermal cycling. The furnace tries to light, doesn’t, and locks out. We keep universal ignitors on the truck for most Carrier, Lennox, and Goodman units. A flame sensor can be cleaned or replaced in under an hour on most Ontario service calls.
Gas Valve and Burner Assembly Work
A gas valve that won’t open, or a burner assembly clogged with dust from Santa Ana wind events, stops heat entirely. We test inlet and outlet gas pressure with a manometer before condemning a valve. On older Ontario tract homes with original hard-piped gas lines, we also check for sediment in the drip leg.
Trusted Brands We Service in Ontario
Our techs are factory-trained on nine major residential HVAC brands, and in Ontario we service a lot of Goodman, Rheem, and York furnaces from the 1990s and 2000s builds around the 91761 and 91762 ZIP codes. Daikin units are common in newer developments near Rancho Cucamonga’s border. We stock common replacement parts for these brands on our trucks, which means fewer second trips. If a part isn’t local, we can usually have it by the next morning.
Common Furnace Repair Problems We See in Ontario Homes
- Dust-packed in-shot burners and flame sensors. Santa Ana winds and summer AC use push fine dust through return grilles. By the first cold snap, that dust is sitting on the burner assembly, causing weak flames and false lockouts.
- Short cycling from oversized furnaces. Ontario’s 1960s to 1980s tract housing frequently has furnaces that are too big for the home. Short cycling stresses the heat exchanger and blower motor, shortening equipment life.
- Capacitor and blower motor failures after hard summers. A furnace blower runs year-round in Ontario. After a brutal cooling season, the capacitor or motor gives out just when heating demand arrives.
- Heat exchanger cracks on older units. We routinely find cracked heat exchangers in 15-to-20-year-old furnaces in Ontario. This is a safety issue, not a repair-till-it-dies situation.
Pricing for Furnace Repair in Ontario, CA
Here’s what furnace work actually costs in Ontario, based on the jobs our techs run every week.
| Service | Price Range |
|---|---|
| Furnace diagnostic and repair (igniter, flame sensor, blower motor, capacitor) | $150 – $700 |
| Gas furnace tune-up and safety inspection | $80 – $200 |
What moves the price is the part. An igniter swap is quick and cheap. A blower motor or a gas valve costs more. A cracked heat exchanger usually means replacement, not repair. We give you the number in writing before any work starts. Estimates are free. Call (361) 306-9515 and we’ll send a real tech to your Ontario home with a printed price sheet.
We Also Serve Cities Near Ontario
Dalton Heating & Air runs furnace repair calls throughout the western Inland Empire, including Furnace Repair in Ontario and the neighboring communities of Montclair, Claremont, Upland, and Rancho Cucamonga. If your furnace dies on a cold night and you’re anywhere in that footprint, call us. We’ll route the nearest truck.
Serving Ontario, CA - Our Local Coverage Area
We’re based in the Ontario 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 About Furnace Repair in Ontario
Most often, a repair fixes it. A furnace blowing cold air in Ontario usually points to a failed igniter, a dirty flame sensor, or a tripped high-limit switch. Those are $150 – $300 repairs. But if the heat exchanger is cracked, or the unit is over 18 years old and short cycling, replacement is the honest answer. A load calculation tells us the right size before we quote either path. Call (361) 306-9515 and we’ll give you a written repair price and, if needed, a replacement quote on the same visit.
Most furnace repairs in Ontario run between $150 and $700. Simple jobs like a flame sensor cleaning or igniter replacement sit at the low end. Gas valve or blower motor replacements land in the $300 – $500 range. Heat exchanger work pushes toward $700 or becomes a replacement conversation. The price is in writing before we start, every time.
A load calculation tells us exactly how many BTUs your Ontario home actually needs. Many tract homes from the 1960s to 1980s were built with oversized furnaces, and contractors replacing like-for-like just install another oversized unit. That means short cycling, uneven heat, and a shorter equipment life. Marco Benitez requires a load calc on every replacement we quote. It changes the tonnage and often the price, because you stop paying for capacity you don’t need.
The blower motor runs all summer pushing cold air through your Ontario home. By fall, the capacitor or motor is worn. Dust from Santa Ana winds and summer AC operation also settles on burners and flame sensors. When the first cold night hits, the ignition system fails or the motor can’t spin up. We see this exact pattern every October and November across Ontario. A pre-season tune-up at $80 – $200 catches most of it before the furnace dies on a 38-degree night.
Yes. Our techs handle boiler repairs in Ontario for the older homes that still have hydronic heat. Circulator pumps, zone valves, expansion tanks, and boiler heat exchanger inspections are all in our wheelhouse. Boiler parts are less common on local supply house shelves, so we confirm the model before the visit. Call (361) 306-9515 and tell the live person what you’re hearing and seeing. We’ll bring the right parts the first trip.
Need furnace repair in Ontario today? Call (361) 306-9515 for a free estimate. A live person answers. We’ll give you a written price before any work begins, and every repair is guaranteed in writing for a full year.
Written by Marco Benitez, Owner at Dalton Heating & Air, serving Ontario and the western Inland Empire.