Ontario, CA

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Ontario Plumbing, Heating & Air Conditioning Experts

Full Plumber Services In & Around Ontario

Ontario is one of the oldest communities in the Inland Empire. So much of Ontario has unique, historical homes and buildings. A special city needs a special plumber that can service, replace and help you maintain all the plumbing in your home – old or new. At Klaus & Sons, a trusted name in the industry, we’re proud to bring our expertise from Montclair, CA, to serve the thriving community of Ontario. With years of experience, we are committed to providing exceptional heating, cooling, and plumbing solutions to residents and businesses in Ontario. Give us a call 909-982-5698 or fill out our contact form for immediate assistance.

Emergency Plumbing:

For those unexpected plumbing emergencies, Klaus & Sons is here to provide prompt and reliable emergency plumbing services. We understand that issues can arise at any time, and our experienced team is ready to assist you 24/7.

Air Conditioning Installation and Repair:

When the summer heat sets in, having a reliable air conditioning system is essential. Our team specializes in the installation and repair of energy-efficient AC units, ensuring you stay cool and comfortable when the temperatures rise. We’re here to make your home a haven from the summer sun.

Heating Installation and Repair:

Stay warm and cozy during the colder months with our expert heating installation and repair services. Whether you need a new heating system installed or require prompt repairs to your existing one, Klaus & Sons has you covered. Our skilled technicians ensure your home remains comfortable year-round.

Residential Plumbing Services:

From routine maintenance to complex plumbing issues, Klaus & Sons is your trusted partner for all your residential plumbing needs. Leaky faucets, clogged drains, and more – we’ve got the solutions to keep your water systems flowing smoothly.

Water Heater Repair & Replacement:

Our expert technicians are skilled in water heater repair and replacement services. We ensure your hot water needs are met, providing you with reliable access to hot water whenever you need it.

Why Choose Klaus & Sons:

  • Experienced Team: Our skilled technicians are highly trained and experienced in the HVAC and plumbing fields. You can trust us to provide efficient and reliable services.
  • Customer-Centric Approach: We value your satisfaction and work closely with you to meet your specific needs and budget.
  • Quality Products: We use top-quality products and materials, ensuring the longevity and effectiveness of our installations and repairs.
  • Emergency Services: We understand that heating, cooling, and plumbing issues can arise at any time. Our emergency services are available 24/7 to address urgent problems promptly.

Contact Us:

When you choose Klaus & Sons, you’re choosing excellence in HVAC and plumbing services. We’re dedicated to ensuring the comfort and functionality of your Ontario, CA property. For reliable, professional, and friendly service, contact us today at 909-982-5698 to schedule an appointment or request a quote. Klaus & Sons is here to make your life more comfortable, one service at a time.

Call 909-982-5698 the professional HVAC technicians at Klaus & Sons Plumbing Heating & Air Conditioning in Ontario, CA today for air conditioning service or a free estimate! 

Recent Jobs and Reviews in Ontario, CA

Job Locations and Reviews

Heather P.
Heather P. Checked in
Performed commercial AC repair on a Trane Voyager rooftop unit. Diagnosed the issue as a faulty blower motor. Used a Fluke 116 Multimeter to confirm electrical faults and replaced the blower motor with an OEM Trane part. Inspected and cleaned condenser coils using a coil cleaner. Verified refrigerant levels with a Yellow Jacket manifold gauge set. Ensured the system was operating efficiently and restored proper cooling throughout the building. The unit is now running smoothly.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Repaired a Lennox ML14XC1 air conditioning unit. Diagnosed faulty compressor using Fluke 116 HVAC multimeter. Replaced compressor with Copeland CR22K6-PFV-875 model. Evacuated system with Yellow Jacket 93600 vacuum pump. Recharged with R-410A refrigerant using Fieldpiece SMAN360 digital manifold. Installed new Turbo 200 start capacitor. Cleaned condenser coils with Nu-Calgon 4291-08 coil cleaner. Replaced clogged air filter with MERV 13 pleated filter. Calibrated Honeywell TH6320WF2003 Wi-Fi thermostat. Conducted final system test, verifying proper cooling performance and energy efficiency. Documented all repairs and maintenance in service log.
Ontario, CA 91762
Heather P.
Heather P. Checked in
Replaced 23-year-old HVAC system with Lennox 16 SEER air conditioner and 96% AFUE furnace. Properly sized new units to home's heating and cooling loads. Installed new linesets, plenum transitions, condensate drainage. Performed nitrogen pressure test. Evacuated to 500 microns, charged with R-410A refrigerant to manufacturer's specs. Verified airflow, temperature split. Programmed communicating thermostat.
Ontario, CA 91762
Heather P.
Heather P. Checked in
Installed new piping to the master bath. Ran PEX tubing from the main supply line, securing it with clamps. Connected the lines to the existing manifold, ensuring leak-free joints with crimp rings. Routed hot and cold lines to the sink, shower, and toilet, verifying proper pressure and flow. Tested the system for leaks and optimal performance.
Ontario, CA 91762
Heather P.
Heather P. Checked in
In Ontario, CA, I performed a summer tune-up service on a 5-year-old Bryant HVAC. The comprehensive maintenance included a thorough inspection and cleaning of the entire AC unit to prepare it for peak operation. I verified proper refrigerant charging, cleaned the condenser coils to improve heat transfer, and recalibrated the thermostat for accurate temperature control. These tune-up steps help maintain the system's designed energy efficiency, extend its service life, and ensure reliable cooling performance throughout the intense summer heat.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Today, I addressed an issue with a Daikin DZ20VC air conditioner in a residential home. The system was making unusual noises and struggling with efficiency. I discovered that the blower motor bearings were worn out, leading to the noise. After replacing the blower motor and conducting a vibration analysis to ensure smooth operation, I cleaned the unit's air filters and checked the refrigerant levels for adequate charge. The system is now running quietly and more efficiently.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Just completed repairs on an older tank water heater for a customer in Ontario, CA. Replaced the malfunctioning heating element to restore proper heating functionality. Drained and flushed the tank to remove sediment buildup, improving water quality and efficiency. The water heater is now operating reliably.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Just resolved low water pressure for a customer in Ontario, CA. Conducted a thorough inspection of plumbing lines to identify and remove any blockages or obstructions. Adjusted the pressure regulator valve to ensure optimal water flow throughout the property. Water pressure has been restored to normal levels for improved functionality.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Recently addressed a toilet repair in Ontario, CA, for a satisfied customer. Diagnosed and fixed a faulty fill valve that was causing inconsistent flushing. Replaced the worn-out part, customer now has a toilet that flushes consistently.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Just completed an installation of a Lennox Elite 4 Ton, 16 SEER Heat Pump for a fantastic new client in Ontario, CA. This energy-efficient system promises enhanced comfort and efficiency. With the advanced features of this Lennox heat pump, our client can now enjoy reliable heating and cooling tailored to their needs.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Completed a comprehensive gas furnace maintenance in Ontario, CA, examining and cleaning components for peak functionality. Detected a minor issue with the ignition system during the service, promptly addressing and resolving it for efficient ignition and dependable heating.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Rapidly attended to a gas line repair in Ontario, CA, prioritizing safety and functionality for the homeowner. Since it appears that there was a significant leak, the gas was switched off right away. After that, I tested to find the leak. I employed air pressure, soaping down all exposed fittings, isolating lines, and ended up digging subterranean lines to accomplish finding and repairing the leak. I left providing homeowners with confidence in the restored functionality.
Ontario, CA 91761
Heather P.
Heather P. Checked in
For a valuable residential customer in Ontario, California, Air Conditioning Maintenance was conducted, and the client needed their humidifier relocated. The successful relocation involved moving the humidifier to the side of the return air to improve air distribution. Now, the system is performing as it should for the client.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Installed a new gas line at a residential home. Upon arrival to the home, the route of the gas line was meticulously planned. The gas line was then installed expertly, ensuring precise connections and thorough leak testing. The new line is secure and the gas appliances are operating reliably. The customer was pleased with the service.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Installed a new air conditioning system for a return customer. The old broken down unit was removed and disposed of before the new system was carefully installed. Upon completion, the system was ran to ensure proper performance. The system is running as it should and will provide reliable cool air for the home. The customer is pleased with the replacement.
Ontario, CA 91762
Heather P.
Heather P. Checked in
Went out to repair a gas line at a return customer's home. Once I determined where the gas leak was, I shut off the gas supply. I then meticulously repaired the damaged line and thoroughly tested the line for other leaks, and ensured it was working properly. The line is repaired and the customer is able to use it safely for the home again. The customer was thankful for the service.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Installed a new air conditioning system for a residential customer. The customer's old and broken down system was removed, before the new unit was expertly installed. Upon completion, the unit was tested to ensure proper performance. The system is running well for the home and will provide consistent cool air for the customer.
Ontario, CA 91764
Heather P.
Heather P. Checked in
Arrived at a residential home to replace the customer's pool gas line. I first thoroughly inspected the line for any leaks or damage. I then shut off the gas supply before carefully removing the old line. Once the new line was installed, I tested the line for any leaks or pressure issues. Everything is working properly and the customer was pleased with the service. The replacement will ensure a safe and efficient operation for the pool.
Ontario, CA 91762
Heather P.
Heather P. Checked in
Went out to repair a customer's air conditioning system. After inspecting the units for cooling, I found that the downstairs system was not cooling at all, even though the blower and condenser were both running. I discovered the cause for the issue was a leak in the refrigerant. The leak was found and repaired to bring the system back to proper performance.
Ontario, CA 91764
Heather P.
Heather P. Checked in
Hot water heater repair service call. Customers hot water heater was no longer producing hot water. Performed hot water repair diagnostic and discovered a bad heating element. Replaced the part and water heater now working.
Ontario, CA 91761
Heather P.
Heather P. Checked in
Garbage disposal repair service call. Customer's child had put a toy down the drain that caused some damage. Performed garbage disposal replacement and issue resolved.
Ontario, CA 91761
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