Klaus & Sons Plumbing Heating & Air Conditioning
Klaus & Sons Plumbing Heating & Air Conditioning is an active, licensed contractor operating in Montclair, CA. Operating under a California contractor license established in 1976. They hold 4 license classifications including C-10 Electrical Contractor, C-16 Fire Protection Contractor, and 2 others. They currently maintain an active contractor bond and workers' compensation insurance. No disciplinary actions have been recorded against this license.
License Information
- License Number
- 320990
- Status
- Active
- Classification(s)
- C-10: Electrical Contractor, C-16: Fire Protection Contractor, C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor, C-36: Plumbing Contractor
- Tenure
- Licensed since 1976 (49 years)
- Issue Date
- June 25, 1976
- Expiration Date
- July 31, 2026
- Disciplinary Record
- No Disciplinary Actions
Bond & Insurance
- Contractor Bond
- Bonded ($25000) – AMERICAN CONTRACTORS INDEMNITY COMPANY
- Workers’ Compensation
- Workers' Compensation Insurance – PREFERRED EMPLOYERS INSURANCE COMPANY
A contractor’s bond protects consumers up to the bond amount if the contractor fails to fulfill contractual obligations or violates CSLB regulations.
Workers’ compensation insurance protects homeowners from liability if a contractor’s employee is injured on the job site.
Location
- Address
- 5623 ARROW HWY
- City
- Montclair, CA
- ZIP Code
- 91763
- Phone
- (909) 982-5698
Need Coverage?
Quote and purchase a California contractor license bond online. Create a free account to compare rates and print your bond certificate instantly.
Get Started at Colonial Surety →
Free account required for rate quotes.
Get workers’ comp, general liability, or a bundled policy quoted online in minutes.
Get a Construction Insurance Quote →
Via Ergo Next Insurance. No obligation.
About These License Types
C-10: Electrical Contractor
Places, installs, erects, or connects electrical wires, fixtures, appliances, apparatus, raceways, conduits, solar photovoltaic cells, or any part thereof which generate, transmit, transform, or utilize electrical energy.
Not authorized: Electricians working under a C-10 must be certified per CA Labor Code.
C-16: Fire Protection Contractor
Lays out, fabricates, and installs all types of fire protection systems including all associated equipment.
Not authorized: Does not include electrical alarm systems.
C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor
Fabricates, installs, maintains, services, and repairs warm-air heating systems and water heating heat pumps, ventilating systems, air-conditioning systems, and the ducts, registers, flues, humidity and thermostatic controls and air filters in connection with these systems. Includes solar-powered HVAC systems.
Not authorized: Does not include boiler or steam heating (see C-4) or refrigeration below 50F (see C-38).
C-36: Plumbing Contractor
Provides means for a supply of safe water and proper disposal of fluid waste, including piping, storage tanks, venting, gas appliances and connections, water and gas piping, water heating equipment including solar, and health and safety devices such as backflow preventers and gas earthquake valves.
Not authorized: Does not include forced warm-air units (see C-20).
Licensing Resources
Workers' comp requirements for California contractors
Deposit and payment rules for California contracts
Home improvement contract requirements
Need a Contractor for Your Project?
Get free quotes from licensed, pre-screened contractors in your area. Compare ratings, reviews, and pricing before you hire.
Starting a Contracting Business in California?
Most California contractors operate as an LLC or sole proprietorship with a DBA. Forming your business entity is a separate step from obtaining your CSLB license.
Verify on Official CSLB Website
License data sourced from the California Contractors State License Board. Last data update: April 05, 2026.