Klaus & Sons are your local licensed and insured (CSLB #320990) family-owned Upland plumbing, heating and air-conditioning experts. We provide local residential and commercial HVAC (Heating, Ventilation and Air-Conditioning) and plumbing services 24 hours a day by expert, trained technicians.
Along with our experienced technical staff, we have a courteous and professional office that can answer questions and help you with all your service, maintenance and installation needs.
We repair all brands, makes and models of HVAC equipment.
Klaus & Sons has been serving Upland and the surrounding communities for over four decades. We pride ourselves on providing every customer an excellent experience.
Commercial and Residential Service
Free HVAC Estimates
Free Air-Conditioning, Plumbing & Heating Estimates
Utility Bills Savings
Hero Program Financing
Energy Upgrade California Rebates
24 Hour Emergency Plumbing Services
Help You Save Water & Lower Utility Bills
Plumbing Repairs – Large or Small
Service and Repair Gas Water Heaters • Re-Light Water Heater Pilot Light
Backflow Prevention Experts
Leaking Pipe Detection
Pipe Camera Inspections • Sewer Inspection Camera
Water Heaters • Tankless Water Heaters
Tub and Toilet Repairs/Replacements • Toilet Tank Repair and Installation
Sink and Faucet Repairs/Replacements
Hot Water Dispenser
Whole House Re-Piping •
Install Digital Thermostat
Wi-Fi Thermostat Install
Split System Repair & Replace
Heating and Cooling Package Units
Rooftop Heating and Cooling System Installation
Install & Relocate Air Conditioner
High-Efficiency Heating & Cooling Systems
Filters • Indoor Air Quality Systems
Indoor Air Quality Control
Airflow Ducts • Ductwork Improvement
Central Air-Conditioning Units
HVAC System Tune-ups
Troubleshooting and Diagnosis
Heating Repair & Troubleshooting
Central Heating Repair & Installation
Gas Furnace Repair & Installation
Troubleshooting and Diagnosis
Condenser Repair & Replacement
Heat Pump Repair & Replacement
Indoor Air Quality Control & Air Filtration Systems
Gas Leak Detection & Repairs
Klaus & Sons is a full-service HVAC company. We can help you solve any air-conditioning, heating or ventilation problem. Our technicians have extensive experience, and our customer loyalty and satisfaction reflect the quality of our work and commitment to solving all your HVAC repair and installation issues.
Klaus & Sons is proud to share numerous reviews from satisfied customers. Check out the quotes below or go to our Review Us page and listen to what our customers have to say about our service. We welcome feedback and hope you will review our services.
Our technician, Tyler, was friendly and knowledgeable. Service was clean, fast and the office was helpful and kind.
Our technician was thorough and courteous and answered all of our questions. We are repeat customers.
I cannot believe how honest you guys are! Marino installed a new water heater, he was so helpful. He, Wes and Gene are awesome!
Fred was professional and courteous. Thank you for traveling to Mt. Baldy, it is appreciated. The service was very good, fast and the office staff was helpful and kind.
Klaus & Sons continues to take excellent care of all our plumbing needs, as they have for decades.
Andrew was polite, knowledgeable and we received excellent customer service.
Very good service! We were well pleased. Tifanny was very helpful.
Our technician, Wes, was a happy hard-working, thinking tech. Clean, fast. We are repeat customers.
We referred our neighbors. Andrew was very informative and nice.
Our technician was Fred. We were very impressed with the service, especially with Fred, who is very professional. You should be very proud of him he is a great asset to your company.
Our team of professional plumbers is ready to help you with all plumbing repair and installation services. As a local plumbing company, we can get to your home promptly and deliver our affordable plumbing services.
Licensed and insured, Upland homeowners rely on Klaus & Sons’ fast and dependable service. Our plumbers work every job as cleanly as possible so you don’t have a mess. We handle all types of drain cleaning and plumbing jobs, large or small. Count on our Upland plumbing team to get the job done right the first time!
Our focus is heating your home safely and as efficiently as possible. Routine maintenance and and energy efficient heating units can help lower your energy bills significantly. We are your heating and furnace specialists in Western San Bernardino County and Eastern Los Angeles County.
We can service most makes and models and are a Lennox factory authorized dealer. Lennox is a leader in efficiency and reliability, with outstanding warranties. They offer great financing, so along with our free estimate you’ll know exactly your home requires with no hidden fees or surprises.
Our factory-trained technicians provide air-conditioning installations, repairs and testing for your home or business. We can examine your unit to help determine when an upgrade is necessary. During the summer months quality air-conditioning is a necessity. The wrong unit or a faulty installation can lead to aggravating maintenance problems and poor cooling air circulation.
We are a Lennox HVAC dealer, and our factory trained technicians will determine the best system for your overall comfort. We also can tackle repairs on most models of air-conditioners so you can rest comfortably knowing your AC system is being maintained and repaired properly. We are your Upland air conditioning specialists.