Klaus & Sons Plumbing, Heating & Air Conditioning
Is this your business?
Claim your listing to verify your info and earn a verified badge.
Claim This BusinessAbout Klaus & Sons Plumbing, Heating & Air Conditioning
Klaus & Sons Plumbing, Heating & Air Conditioning has served Montclair and the broader Inland Empire since 1973, making it one of the most established family-owned contractors in San Bernardino County. With a 4.9-star rating across 992 reviews and a license held for over five decades, the company provides 24/7 emergency response alongside scheduled installations. Their service area spans Montclair, Upland, Rancho Cucamonga, Ontario, and Chino Hills, delivering both residential plumbing and HVAC solutions from a single dispatch. The business remains fully licensed and insured, with a reputation built on treating customers like extended family.
What distinguishes Klaus & Sons is their commitment to transparent upfront pricing and diagnostic thoroughness before recommending repairs. The company offers free quotes on new AC installations and heating system replacements, with financing options available for larger projects. Their technicians carry ongoing certifications and use state-of-the-art equipment designed for lasting repairs rather than temporary fixes. Whether handling a simple toilet repair or a complete home repipe, the team arrives in marked vehicles, respects working environments by keeping homes clean, and completes jobs efficiently to minimize disruption to homeowners.
Customer reviews consistently name technicians who go beyond standard service calls. Jake has been praised for diagnosing water heater issues, explaining new code requirements, and leaving homeowners feeling informed about their plumbing systems. James has handled same-day toilet repairs and full repiping projects, with one reviewer noting he explained the entire process and answered every question. Another customer recalled receiving a quote over the phone for $475, far below the $1,400 quoted by competitors, only to pay $189 when the job was completed without the expected hydro cleaning. This combination of named technicians, specific repair scenarios, and honest pricing appears repeatedly across their review history.
What Customers Say
The majority of reviews mention upfront pricing and honesty as key differentiators, with multiple customers noting they received accurate phone quotes that saved them hundreds compared to competitors. Technicians Jake and James are specifically named across positive reviews for diagnostic skill and clear communication. The single 1-star review focuses on service fee disclosure, while all 5-star reviews cite either fair pricing, same-day response, or thorough workmanship.
Working Hours
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Services
Emergency Plumbing Repairs
24/7 availability for burst pipes, overflowing toilets, and other urgent plumbing issues requiring immediate attention.
Water Heater Services
Repair and replacement for both traditional tank and tankless water heaters, including diagnosing pressure and leak issues.
Bathroom and Kitchen Plumbing
Faucet repair, sink installation, toilet servicing, shower and tub work, plus dishwasher and garbage disposal hookups.
Whole-Home Repiping
Complete repiping services with professional team deployment, detailed process explanations, and upfront pricing.
Air Conditioning Installation and Repair
New AC system installation with free upfront quotes, plus repair services for existing cooling systems.
Heating System Services
Furnace repair and heat pump services by certified technicians for residential and light commercial properties.
Indoor Air Quality Solutions
Installation of air purification and filtration systems to improve home air quality year-round.