Logo of HVAC Firms
HVAC technician inspecting and repairing a furnace in a dimly lit basement with tools and filter nearby.

Find the Best Furnace Repair Companies for Your Business

No obligation • Fast responses • Nationwide coverage

Search providers near you

Top Furnace Repair Companies in Ontario, California Ranked

When your furnace stops working on a chilly Ontario evening, a swift and reliable repair is essential for restoring comfort and safety to your home. Furnace repair involves diagnosing and fixing issues with your heating system's critical components, from ignition problems to airflow blockages. This guide will help you understand the common furnace failures local homeowners face, what to expect during a service call, and how to find qualified professionals in the Ontario area to get your heat running smoothly again.

All City Plumbing, Air & Electrical

All City Plumbing, Air & Electrical

5612 E La Palma Ave, Anaheim, CA 92807

All City Plumbing, Air & Electrical is a full-service provider based in Anaheim, CA, offering plumbing, HVAC, and electrical services. They serve residential and commercial customers with repair, installation, and maintenance for air conditioning, furnaces, thermostats, and indoor air quality systems. The company is known for its ACE-certified technicians and uses advanced technology such as hydro jetting for plumbing services. With over 13 years in business, All City Plumbing, Air & Electrical provides 24/7 emergency service to address urgent HVAC and plumbing needs.

5.0
1.9k Reviews
Air Care

Air Care

30211 Avenida de las Banderas #200, Rancho Santa Margarita, CA 92688

Air Care is a veteran-owned heating and air conditioning company based in Long Beach, CA. They provide residential HVAC services including air conditioning repair, furnace repair, mini split installation, HVAC tune-ups, and indoor air quality solutions. Serving Long Beach and the surrounding Orange County areas, Air Care offers 24/7 emergency services to address heating and cooling issues promptly. Their technicians are licensed, trained, and certified, ensuring professional and reliable workmanship. The company emphasizes quality and integrity in all their services and partners with top brands like Trane to deliver high-quality products.

5.0
1.3k Reviews
MSP HEATING AND AIR CONDITIONING

MSP HEATING AND AIR CONDITIONING

2932 Rubidoux Blvd Suite B, Jurupa Valley, CA 92509

MSP HEATING AND AIR CONDITIONING is an HVAC company based in Riverside, CA, offering repair, installation, and maintenance services for air conditioning, furnaces, heat pumps, and indoor air quality systems. Serving Riverside County and parts of San Bernardino County, they provide certified expertise including heat exchange, NATE, EPA 608, and indoor air quality certifications. With over a decade of experience, MSP HEATING AND AIR CONDITIONING focuses on preventing issues through regular maintenance and delivering prompt repairs when needed. They also offer 24/7 availability for emergency HVAC services.

5.0
1.2k Reviews
Year Round Heating & Air Conditioning

Year Round Heating & Air Conditioning

10444 Corporate Dr Unit A-B, Redlands, CA 92374

Year Round Heating & Air Conditioning provides comprehensive HVAC services in Riverside, CA, including air conditioning and furnace repair, installation, maintenance, and indoor air quality solutions. As a Lennox Dealer, the company offers skilled technicians who handle a variety of heating and cooling systems, ensuring accurate and efficient service. Established in 2016, Year Round Heating & Air Conditioning also offers emergency response services and financing options for repairs and installations.

5.0
1.1k Reviews
Mission Viejo Heating & Air

Mission Viejo Heating & Air

22600 Lambert St Suite 1101, Lake Forest, CA 92630

Mission Viejo Heating & Air provides heating and air conditioning repair and installation services in Long Beach, CA. They offer tailored HVAC solutions for homes and businesses, focusing on energy efficiency and durability. The company is available seven days a week to assist with heating and AC repairs and installations, ensuring customer comfort throughout the year.

5.0
905 Reviews
See more providers in Ontario, CA

A functioning furnace is more than a convenience; it's a cornerstone of home safety during the Inland Empire's cooler months. Understanding the repair process can help you make informed decisions and quickly restore warmth to your household.

Common Furnace Problems in Ontario Homes

Furnaces work hard, and several components can fail over time. Recognizing the symptoms can help you describe the issue accurately to a technician.

  • Ignition System Failures: This is a leading cause of no-heat calls. Problems can stem from a faulty hot surface igniter, a dirty or failed flame sensor, or issues with an older pilot light. Your furnace may attempt to start but shut down without producing heat.
  • Blower Motor Issues: The motor that circulates warm air throughout your ducts can fail due to age, lack of lubrication, or electrical problems. Symptoms include no airflow, weak heat delivery, or unusual screeching or grinding noises.
  • Faulty Thermostat: Sometimes the issue isn't with the furnace itself. A thermostat with dead batteries, incorrect settings, or internal calibration problems can prevent the system from turning on.
  • Restricted Airflow: A severely clogged air filter or blocked ductwork forces your furnace to work harder, leading to overheating, reduced efficiency, and potential system shutdowns. This is a common and preventable issue.
  • Control Board or Gas Valve Failures: The furnace's brain (control board) or the valve that controls gas flow can malfunction. These are more complex electrical or mechanical repairs that require professional diagnosis.

What to Expect During a Furnace Repair Service Call

Knowing the standard procedure can ease anxiety and ensure the service goes smoothly.

  1. Initial Contact & Description: You'll describe the symptoms-no heat, strange noises, short cycling-to the dispatcher. Reputable companies in Ontario will often provide a window for the technician's arrival.
  2. Diagnostic Inspection: The technician will perform a thorough inspection. This includes visual checks, testing safety devices like carbon monoxide sensors, and using meters to check electrical components like the igniter, motor, and control board.
  3. Estimate & Approval: After diagnosing the problem, the technician should provide a clear, written estimate detailing the necessary parts and labor costs. Reputable pros will not begin work without your approval1 2.
  4. The Repair Work: Simple fixes like replacing an ignitor or thermostat can often be completed in under an hour. For major parts like a heat exchanger or blower motor, the technician may need to order the component, which can extend the timeline by a few days.
  5. Post-Repair Testing & Walkthrough: Once repaired, the technician will test the entire system to ensure it operates safely and efficiently. They should then explain what was done and may offer maintenance tips3.

Find the perfect furnace repair companies for your needs

Get personalized recommendations and expert advice

Understanding Repair Timelines and Costs

Two of the most common questions are "How long will it take?" and "How much will it cost?" While every job is unique, local data provides helpful guidelines.

How Long Furnace Repairs Typically Take

  • Simple Repairs: Tasks like replacing a flame sensor, thermostat, or capacitor are often completed in 30 minutes to a few hours.
  • Moderate Repairs: Swapping out a blower motor or hot surface igniter may take 2 to 4 hours.
  • Complex or Delayed Repairs: If a specialty part like a control board or heat exchanger needs to be ordered, the repair could be scheduled over several days4.
  • Seasonal Delays: During peak winter demand in Ontario, wait times for service appointments can increase. Some companies offer priority scheduling for customers with annual maintenance plans5.

Furnace Repair Cost Ranges in Ontario

Costs vary based on the part needed, labor time, and whether it's an emergency after-hours call.

  • Minor Repairs: $100 to $300 for components like a thermostat, flame sensor, or limit switch.
  • Mid-Range Repairs: $300 to $800 for parts such as an inducer motor, blower motor capacitor, or hot surface igniter.
  • Major Repairs: $1,000 to $3,500+ for significant components like a heat exchanger or complete control board replacement 6 7.
  • Labor Rates: Standard professional labor typically ranges from $75 to $150 per hour. Emergency, weekend, or holiday service calls usually incur higher rates8 9.

Proactive Steps Before Calling for Service

Before you pick up the phone, a few quick checks might resolve the issue or provide valuable information to the technician.

  1. Check the Thermostat: Ensure it's set to "HEAT" and the temperature setting is above the current room temperature. Replace old batteries if applicable.
  2. Inspect Electrical Switches: Locate the furnace's power switch (it often looks like a regular light switch on or near the unit) and make sure it's on. Also, check your home's main electrical panel for a tripped circuit breaker dedicated to the furnace.
  3. Replace the Air Filter: A dirty filter is a frequent culprit. Replace it with a clean one to see if airflow and operation improve10 11.
  4. Ensure Vents are Open: Make sure supply air vents throughout your home are not blocked by furniture or rugs.
  5. Observe the Furnace: Note any specific sounds, smells, or error code flashes on the furnace's indicator light. This information is very helpful for the technician.

The Value of Regular Furnace Maintenance

Scheduling annual furnace maintenance, ideally in the fall before heating season, is one of the best ways to avoid unexpected breakdowns. A tune-up includes cleaning critical components, checking for wear and tear, and ensuring safe operation. This proactive service can improve efficiency, extend the system's lifespan, and often provides customers with priority service scheduling during busy periods12.

Frequently asked questions

Sources

Footnotes

  1. Heating & Air Services Ontario, CA Installation - https://www.jerrysheatingandairconditioning.com/locations/ontario-ca

  2. Furnace & Heating Repair in Ontario, CA - https://www.macawsome.com/heating/heating-repair/

  3. Furnace Repair Winters CA Emergency and Scheduled - https://alwaysaffordableplumbing.com/heating/furnace-repair-winters-ca

  4. How Long Does It Usually Take to Repair a Furnace?. - https://www.tcmemt.com/post/how-long-does-it-usually-take-to-repair-a-furnace

  5. How Much Does It Cost to Repair a Furnace? - Rescue Heat & Air - https://rescueheatandair.com/blog/how-much-does-it-cost-to-repair-a-furnace/

  6. How Much Does Furnace Repair Cost? 2025 Guide - https://www.tripleotoday.com/blog/heating-service/how-much-does-furnace-repair-cost-2025-guide/

  7. Furnace Repair Cost: Expected Expenses for Fixing Your Heating - https://www.blackburnanddavis.com/furnace-repair-cost/

  8. How Much Does It Cost to Repair a Furnace in Ontario? - https://ontarioairservices.ca/how-much-does-it-cost-to-repair-a-furnace-in-ontario/

  9. How Much Does It Cost to Fix a Heating System? - Liam Services - https://liamsvcs.com/how-much-does-it-cost-to-fix-a-heating-system/

  10. Furnace Repair Services in Ontario - Heating - Enercare - https://www.enercare.ca/ontario/heating/furnace-repair

  11. Heating and Air Conditioning Repair in Ontario, CA - https://www.homedepot.com/services/l/ca/ontario/heating-air-conditioning-repair/673dcc2c8

  12. The Benefits of a Furnace Maintenance Plan for Ontario Homeowners - https://www.peatsonsheatair.com/blog/heating-service/the-benefits-of-a-furnace-maintenance-plan-for-ontario-homeowners/