Klaus & Sons Plumbing
Heating & Air Conditioning
(909) 982-5698
Klaus & Sons are your local licensed and insured (CSLB #320990) family-owned 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 an expert, trained technicians.
Knowledgeable, Friendly Office Staff
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.
Solutions To All Your Plumbing, Heating And Air-Conditioning Needs Since 1973
Klaus & Sons have been serving Upland and the surrounding communities for over four decades. We pride ourselves on providing every customer an excellent experience.
Your 24-Hour Emergency Plumber & HVAC Service Experts
Commercial and Residential Service
Free HVAC Estimates
Free Air-Conditioning, Plumbing & Heating Estimates
Utility Bills Savings
Hero Program Financing
Energy Upgrade California Rebates
Energy-Efficient Upgrades
An Upland Plumber You Can Count On!
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
Pressure Regulators
No Hot Water? No Water Pressure?
Call (909) 982-5698
Water Heaters • Tankless Water Heaters
Tub and Toilet Repairs/Replacements • Toilet Tank Repair and Installation
Sink and Faucet Repairs/Replacements
Hot Water Dispenser
Drain Cleaning
Outdoor Plumbing
Whole House Re-Piping •
Upland Air Conditioning Installation & Repair Experts
Attic Insulation
Install Digital Thermostat
Wi-Fi Thermostat Install
Humidifier Installation
Split System Repair & Replace
Heating and Cooling Package Units
Rooftop Heating and Cooling System Installation
Install & Relocate Air Conditioner
HVAC Replacements
No Cool Air? No Hot Air? Call Us at (909) 982-5698
High-Efficiency Heating & Cooling Systems
Filters • Indoor Air Quality Systems
Refrigerant Leaks
Indoor Air Quality Control
Airflow Ducts • Ductwork Improvement
Central Air-Conditioning Units
Compressors
HVAC System Tune-ups
Coils
Fan Motors
Troubleshooting and Diagnosis
Install a New Heater or Repair an Existing Unit
Heating Repair & Troubleshooting
Central Heating Repair & Installation
Filter Replacement
Gas Furnace Repair & Installation
Fan Motors
Troubleshooting and Diagnosis
Airflow Ducts
Condenser Repair & Replacement
Heat Pump Repair & Replacement
Thermostats
Indoor Air Quality Control & Air Filtration Systems
Gas Leak Detection & Repairs
REQUEST SERVICE
Special Offers
The Lennox Spring Promotion
The perfect system should adapt to your life to deliver the ultimate in energy savings and precision temperature control. We agree. And that’s why we’re proud to be a leading provider of innovative, home heating and cooling systems. Our high-efficiency, Lennox® residential air conditioners, furnaces and HVAC systems help maximize comfort while reducing utility costs. Plus, our Lennox air filters, humidifiers and dehumidifiers help create healthier and cleaner indoor environments.
FINANCE FOR AS LOW AS $116 A MONTH** with the purchase of qualifying equipment!
Free Nest Thermostat
It’s beautifully designed to keep you comfortable and help save energy. Turns itself down when you’re away.

Customer Reviews
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.
Your Local Plumber
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.
The Clean
Plumbing Team
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!
Heating Repair & Installation
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.
Servicing All Makes & Models
of HVAC Equipment
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.
Air-Conditioning
Installation & Repair
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.
Efficient & Way Cool
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.