Careers at Peterson Mechanical Inc. | 100+ Years of Service
Bay Area Plumbing & Mechanical Contractor Since 1915

Our residential HVAC installers meet the needs of homes and businesses throughout Northern California.

Safety First
Peterson Mechanical 100 Years of Service

Careers at Peterson Mechanical Inc.

careers in sonoma county at peterson mechanical

Our Culture Current Positions (2) Think Safety
Equal Employment Highlight of Benefits ADA Compliance

The Peterson Mechanical Inc. Culture

Peterson Mechanical Inc. has been in the same family for over a century and that family-feel is at the core of everything we do. Employees enjoy working here. We are hard-working, but have fun doing so; it’s a supportive environment; it’s just the right size to get to know everybody, and make sure you don’t trip over our mascot dogs, Abby and Izzy!

We celebrate! There are picnics, parties, and BBQs. We share birthday wishes and welcome babies.

We promote an open-door policy. Our top management is visible, available, and genuinely interested in our employees.

Code of Excellence

hvac service contractors

  • The company is only as good as its employees. We mentor and grow our people for they are our greatest asset.
  • We are experts in our business. We solve problems. If we don’t know, we find out.
  • We have a “Can Do” attitude. We understand that if we don’t, our competitors will.
  • Employee safety is a top priority.
  • We promote our company every day by being responsive and working with our customers and GC’s as partners. Every job is a marketing opportunity for our entire company. (HVAC, Plumbing, Service)
  • We take pride in our Integrity, Work Ethic, and Craftsmanship.
  • We are one company and a team. We communicate, look-out for our fellow workers, and do what’s best for the company.
  • We take a proactive approach to our work. We plan our work, look at the result then plan some more.
  • All employees have equal value. We listen to our employees and respect differing opinions. We treat our peers with respect.
  • We are continuously improving ourselves and our company. We are creative and believe in progressive thinking.

Core Values

Excellence – Exceeding standards in every aspect of our business.

Innovative – Using creative ideas and cutting edge technology to deliver advanced solutions.

Integrity – Committing to principles of responsibility, reliability, and honesty.

Leadership – Standing at the forefront of our business and providing initiative in all we do.

Proactive – Anticipating required actions and responding with solutions.

Current Positions Available

Accounts Payable Administrator

Job Summary:

A well-established construction contractor in Sonoma is seeking an Accounts Payable Administrator. Responsibilities include creating, entering, and processing payments for all vendors and contractors; reconciling and researching vendor accounts; and acts as back-up to the Contracts Administrator. This is a full time position, Monday through Friday, ideally 7:30 AM to 4:30 PM.

Essential Duties & Responsibilities:

Accounts Payable

  • Sets new vendors; updates and maintains vendor database as necessary
  • Enters invoices into accounting system and matches to purchase orders
  • Tracks approved invoices and makes necessary changes
  • Tracks purchase orders and open invoices
  • Tracks and processes “special terms” vendors
  • Coordinates with Project Managers and Management on invoice approvals
  • Prints and posts all payments
  • Reconciles various accounts, including, but not limit to: Fasttrack, credit and fuel cards
  • Reviews expense accounts and employee reimbursements
  • Reconciles vendor statements to payments and follow-up on discrepancies
  • Tracks subcontract payments
  • Prepares and processes 1099 tax forms at year end
  • Archives payable records in compliance with record retention specifications

Contracts Administration

  • Processing contracts, subcontracts and job setup
  • Review and follow-up of A/R issues
  • Processes preliminary lien notices
  • Support of estimators and project managers with various administrative and compliance tasks

Non-Essential Job Duties:

  • Supports Front Desk Administrator on multi-line phone system and greeting guests
  • Administrative errands, ex. mail and postage
  • Other duties as assigned

Essential Qualifications:

  • Highly organized with strong attention to detail
  • High School Diploma or equivalent
  • Working knowledge of MS Office programs
  • Demonstrated experience in accounting software
  • Professional and courteous demeanor
  • Problem solving, analytical skills, accuracy
  • Self-starter

Preferred Job Qualifications:

  • Self-directed and self-motivated
  • Knowledge of construction industry
  • Working experience in Vista by Viewpoint

ADA Specifications:

Position requires sitting for prolonged periods and occasional standing and walking. Manual dexterity required for computer work. There is occasional lifting of up to 25 lbs. Office work environment with a moderate noise level. Reasonable accommodations will be provided.


Assistant Project Manager

Job Summary:

The Assistant Project Manager, under the direction of the Project Manager, plans, coordinates, executes and maintains effective construction organization utilizing the necessary engineering, labor, equipment, materials, tools, subcontracted services and other Company resources to perform the scope of the contracted work on high rise residential, commercial and industrial plumbing/piping/HVAC projects within budget and time schedule.

Essential Duties & Responsibilities:

Under the direction of the Project Manager, assists with:

  • the development and tracking of the project schedule
  • establishing project cost control centers for tracking equipment, material, labor, subcontracts and miscellaneous costs
  • the direction of trade planners in the development of shop drawings and coordination of the planning efforts with other trades
  • the development of piping, plumbing and/or HVAC construction standards
  • the resolution of issues/problems
  • the reporting of project status to stakeholders
  • the estimation and processing of changes in the scope of work
  • the management of construction documentation
  • the inspection of the job site on a periodic basis
  • follow up on warranty work

Other duties as assigned.

Non-Essential Job Duties:

  • Assists in sales calls.
  • Attends pre-bid meetings.

Essential Qualifications:

  • HS Diploma or equivalent with 2-4 years of experience working in the mechanical construction industry or BS in Engineering/Construction Management.
  • Knowledge of commercial and industrial plumbing or piping systems.
  • Knowledge of commercial and industrial HVAC systems.
  • Ability to interpret computerized data.
  • Computer literacy in Outlook, Excel and Word and Blue Beam.
  • Excellent verbal and written communication skills; ability to effectively communicate with all stakeholders.
  • Strong attention to detail.
  • Valid driver’s license and ability to travel throughout Bay Area.

Preferred Job Qualifications:

  • Working knowledge of AutoCAD, Microsoft Project and Primavera.
  • Knowledge of design, building and mechanical/plumbing code.

ADA Specifications:

Sitting for prolonged periods required. Occasional standing and walking required. Manual dexterity required for computer work. Occasional lifting of up to 25 lbs required. Office work environment as well as construction site environment. Some exposure to loud noise on construction sites at times. Reasonable\ accommodations will be made available.

Think Safety Mission Statement

Peterson Mechanical Inc. is committed to the safety and welfare of all our employees and the employees of the project team, through prevention, education, awareness, and strong safety culture. Our goal is to reduce workplace accidents with the ultimate goal of zero injuries and accidents.

Our efforts towards safety have allowed us to benefit from a low EMR Rate, always below 1.

Program Overview

Peterson Mechanical Inc.’s full-time Safety Coordinator, Dave Kimble, works to assure implementation of our comprehensive written safety program and to ensure that the company and its employees are in compliance with all OSHA regulations, Cal OSHA regulations, ANSI standards, and industry best practices.

Our Safety Coordinator has the following training: OSHA 511, 500, HAZWOPER, OSHA 10-30, First Aid, CPR, AED, Power Industrial Trucks Training, Confined Work Space Trainer, Respirator Use Trainer, Powder Actuated Tools, Man Lift Trainer, Certified Rigging and Signaling, Competent Person Trenching Certified, and ARC Flash Prevention. Notably, he also has over 10 years of practical experience.

Our Safety Program consists of the following: Injury and Illness Prevention Program (IIPP), Job Hazard Analysis (JHA), Accident Investigation, Heat Illness Prevention, Tool Box Training, Fall Protection Training, Hot Work Permits, and Code of Safe Work Practices.

Peterson Mechanical Inc.’s written safety program is under continuous review to ensure our policies and procedures reflect current safety standards, requirements, and industry best practices.

All of our Field Supervisors are OSHA 10 and 30 certified and receive continual training on our Safety Program.

Equal Employment Opportunity Statement

We’re an Equal Opportunity Employer & Prohibit Discrimination & Harassment of Any Kind

Peterson Mechanical Inc. upholds equal employment opportunity for all employees and provides employees with a work environment free of discrimination and harassment. All employment decisions at Peterson Mechanical Inc. are based on business needs, job requirements and individual qualifications, without regard to race, color, religion or belief, national, social or ethnic origin, sex (including pregnancy), age, physical, mental or sensory disability, HIV Status, sexual orientation, gender identity and/or expression, marital, civil union or domestic partnership status, past or present military service, family medical history or genetic information, family or parental status, or any other status protected by the laws or regulations in the locations where we operate. Peterson Mechanical Inc. will not tolerate discrimination or harassment based on any of these characteristics. Peterson Mechanical Inc. encourages applicants of all ages.

Highlight of Benefits

peterson mechanical staffWe offer a competitive benefits package:

Group Medical Insurance

  • Company pays 80% of monthly bronze premium per respective plan
  • Choose from several Blue Shield, Western Health Advantage or Kaiser plans

Group Dental Insurance

  • Company pays 100% of employee monthly premium
  • Current carrier is Cypress Dental

Dependent Insurance

  • Employees may add dependents to group plan coverage
  • Company pays 60% of monthly bronze premium per respective plan

having fun at peterson mechanical in sonoma

Long Term Disability

  • Company pays 100% of premium
  • Supplements the State Disability Plan
  • Salary continuance at 60% up to $5,000 per month


  • Company match: 100% of employee’s contribution up to 3% of compensation plus 50% match on contributions from 3% to 5% of compensation (excludes bonuses)
  • Match is made annually on a one-time basis
  • Choice of Mass Mutual self-directed investment options; includes a fixed investment option with a 3% guarantee
  • Match is made annually on a one-time basis, no later than June 15th of the following year


  • Discretionary contribution to 401K plan of 7 to 15 % of employee compensation (excludes bonuses)
  • Match is made annually on a one-time basis, no later than June 15th of the following year

Voluntary Benefits

  • Employees can choose Critical Care Insurance, Hospital Coverage, Cancer and Accident Insurance, Whole or Term Life. A Long Term Care rider is available. Vision insurance is offered through VSP.

Employee Assistance Program

  • Referral based benefit for situations such as legal, financial, and substance abuse assistance.

PTO (Personal Time Off)

  • 9 to 18 days per year based on years of service

Paid Holidays

  • 10 paid holidays per calendar year

Americans with Disabilities Act Compliance Statement

Peterson Mechanical Inc. is committed to compliance with the Americans with Disabilities Act (ADA) which prohibits the discrimination of qualified individuals with disabilities who can perform the essential functions of the job with or without reasonable accommodation.

Click on Commercial HVAC or Residential HVAC or call for a Competitive Estimate