Sr. Superintendent - Water / Wastewater JobotSr. Superintendent - Water / WastewaterModesto, CA$160,000–$190,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. For immediate review, please email your resume and project list to https://jobot.com/apply/sr-superintendent-water-wastewater/2059063014?utm_source=Monster.
Water/wastewater General Superintendent/Superintendent - Heavy Civil JobotWater/wastewater General Superintendent/Superintendent - Heavy CivilTracy, CA$120,000–$150,000 / yearThe Mechanical Superintendent must be a competent person in the construction trade with experience in mechanical equipment, structural steel and piping installation works, welding procedures and processes, lifting and rigging and all necessary relevant experience in process plant construction projects. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.
Sr. Project Manager JobotSr. Project ManagerModesto, CA$175,000–$195,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. This is your opportunity to lead from the front, mentoring Project Managers, influencing strategy, and strengthening relationships with owners and engineers, while contributing directly to the success of projects that make a lasting impact.
NewFlatbed CDL Driver, OTR Route System TransportFlatbed CDL Driver, OTR RouteLivermore, CAFull pay package also includes other accessorial compensation to include tarp pay, stop pay, detention pay, border crossing pay, safety bonuses, and over-dimensional pay as appropriate. See Advantage AI Privacy Policy at https://www.advantage.ai/legal/privacy-policy and SonicJobs Privacy Policy at https://www.sonicjobs.com/us/privacy-policy and Terms of Use at https://www.sonicjobs.com/us/terms-conditions.
NewLogistics/Freight Coordinator (Remote - West Coast Region) LIFTING GEAR HIRE CORPLogistics/Freight Coordinator (Remote - West Coast Region)Tracy, CARemote$21–$23 / hourBook and oversee the full freight process for outbound and inbound freight shipments, including orders, customer transfers, internal transfers, inventory transfers, and vendor transfers using multiple different freight methods; Create purchase orders for each shipment and verify accuracy of PO numbers appearing on freight invoices provided to LGH; Provide daily confirmation of all incoming and outgoing shipments with LGH customers, LGH Rental Representatives, freight suppliers, and LGH vendors; Communicate freight load numbers and shipping pro numbers as needed after freight is booked and shipped; Utilize the best freight method possible when booking loads from LGH vendors, as necessary, to reduce freight costs; Coordinate with LGH Rental Desk to confirm scheduled shipments and deliveries, and provide proactive status updates to all relevant parties; Monitor the LGH Returns Report daily and take appropriate action in a timely manner as defined by LGH procedures; Monitor email and Echo reports regularly to ensure all freight requests and updates are addressed in a timely manner; and. Founded in 1990, LGH stands at the forefront of the hoisting and rigging equipment rental industry, providing rental equipment responsible for the installation, maintenance, and repair of everything from the bridges you drive on to the sports stadiums you visit.
Commercial Route Manager with Fumigation/ QLA (M) Sprague Pest SolutionsCommercial Route Manager with Fumigation/ QLA (M)stockton, CA$26–$32 / hourThe Route Manager will develop cordial professional relationships with clients to fully understand their unique business challenges, offer knowledgeable guidance, recommend actions, and solve a wide variety of pest management problems. This position reports to the Branch Manager and partners with Operations Managers, Sales Reps, and a team of Route Managers (technicians) to continually enhance client satisfaction and business operations.
NewSystem Performance Engineer -Nor Cal Communication Technology Services IncSystem Performance Engineer -Nor CalLivermore, CA$80,000–$100,000 / yearCommunication Technology Services (CTS) is one of the largest integrators and managed service providers for enterprise cellular networks in the U.S. providing custom, carrier-grade in-building and campus connectivity solutions for Enterprises, Public Sector and Mobile Network Operators, solving and managing the most complex networking challenges. 35-year-old company and the leading Enterprise cellular connectivity solution in the U.S. Majority-owned by Astra Capital, a nationally certified Minority Business Entity (MBE).
NewMaintenance Technician III - 3rd shift RefrescoMaintenance Technician III - 3rd shiftModesto, CA$30.12–$41.42Adhere to all health and safety policies/procedures, Good Manufacturing Practices (GMPs) and wear the required personal protective equipment (PPE) while in the warehouse or production areas (including but not limited to hairnets/beard nets, safety glasses, hearing protection, steel toe boots and seatbelts while operating forklifts). education, training, qualifications, certifications/licensing, skills, geographic location, performance, market considerations, seniority system, merit system, systems that measure earnings by quantity or quality of production, and business or organizational needs (such as whether the position requires regular and necessary travel).
NewEquipment Associate United RentalsEquipment AssociateTurlock, CA$19.05–$27.45 / hourAs a Climate Solutions Equipment Associate within the Power/HVAC division at United Rentals, you'll use your skills to perform jobsite installations as well as minor repairs on equipment in a safe and professional manner. If you'd like the chance to make your mark with the world's largest equipment rental provider, come build your future with United Rentals!
NewAutomotive General Service Technician Oakdale Auto Care & TireAutomotive General Service TechnicianOakdale, CA$16.50–$20 / hourWe also service what we sell, providing customers with computer spin and road force balancing, flat repairs, regular and low-profile tire installation, PAX tire service, and tire rotations. See Sun Auto Tire & Service Privacy Policy at https://www.icims.com/legal/talent-acquisition-privacy-notice/ and SonicJobs Privacy Policy at https://www.sonicjobs.com/us/privacy-policy and Terms of Use at https://www.sonicjobs.com/us/terms-conditions.
NewCommercial Route Manager Sprague Pest SolutionsCommercial Route ManagerModesto, CA$21–$26 / hourJob Requirements: · High School Diploma or GED · 2 years in route sales, facilities management, janitorial service, landscaping, or environmental services · 2 years’ experience in customer service, sales, retail, or hospitality roles · Excellent communicator, both written and verbal, able to communicate complex concepts and risk factors to stakeholders and influence decision making · Ability and aptitude with Microsoft Office Suite and other technology necessary for successful day-to-day functioning in a business environment. Driving: Must possess the physical ability to safely operate and drive a vehicle, including maintaining control and awareness during extended periods of driving Use of Protective Equipment: Wearing protective gear, including gloves, goggles, and respirators, to reduce the risk of harm from pesticides Working in various weather conditions: Preparedness to work outdoors in all types of weather, including extreme heat, cold, and rain.
NewSpecial Warfare Combat Crewman U.S. NavySpecial Warfare Combat CrewmanStockton, CAKey Responsibilities Insert and extract SEALs and other special operations personnel from rivers, coasts, and contested littoral areas; operate and maintain high speed combatant craft, engines, weapons, communications, and navigation systems; collect data on enemy installations, shipping, and coastal activity; assist military and civilian law enforcement agencies when directed; conduct direct action raids against enemy shipping and waterborne traffic; integrate with and support other special operations forces and naval strike groups. Additional qualifications for this job may include: Excellent physical condition and strong swimming ability; eyesight within required limits, for example 20/40 best eye and 20/70 worst eye correctable to 20/25, with normal color vision; qualifying ASVAB scores such as minimum combinations in arithmetic reasoning, verbal, and mechanical comprehension; age 30 or younger at accession; United States citizenship and eligibility for a security clearance; mechanical aptitude and solid arithmetic and algebra skills.
NewBoatswain’s Mate U.S. NavyBoatswain’s MateOakley, CAKey Responsibilities - Stand watch as helmsman, lookout, and Boatswain’s Mate of the Watch - Operate small boats and support flight deck and amphibious operations - Repair and maintain deck equipment and exterior ship surfaces - Conduct underway replenishment and cargo handling at sea - Stand security watches in port and underway and participate in naval ceremonies What to Expect - Hands on, mostly outdoor work in varied weather and sea conditions - Frequent watches day and night, at sea and in port, to support ship operations - High tempo evolutions during replenishments, small boat operations, and flight deck activities - Close teamwork within the deck department and opportunities to lead junior Sailors as you advance Work Environment - Assignments on surface ships and at shore installations in the United States and overseas - Work on decks, piers, small boats, and flight decks across a range of sea states and weather conditions - Operate in a physically demanding maritime environment with strict safety procedures and close team coordination Pathways, Training & Advancement - Recruit Training followed by Boatswain’s Mate A School in Great Lakes, Illinois - On the job qualification in seamanship, small boat handling, deck operations, and watchstanding - Advancement based on performance, time in rate, completion of required qualifications, and advancement exams, with historically strong promotion opportunity for qualified Sailors - Enlist directly as a Boatswain’s Mate and attend BM A School after Recruit Training, subject to current classification and manning needs. Job Title: Boatswain’s Mate Category / Component: Enlisted • Both Overview Boatswain’s Mates are seamanship and deck operations experts who form the backbone of a ship’s crew.
Construction Installer TDI REFRIGERATIONConstruction InstallerLathrop, California$25–$55We build, design, and service industrial refrigeration and commercial air conditioning systems in Southern California, Central California, Phoenix, Denver, and Dallas/Fort Worth area. POSITION SUMMARY: The Construction Installer is responsible for the installation, assembly, and modification of commercial refrigeration systems and related structural components.
Retail Display Installer - Technology 2020 CompaniesRetail Display Installer - TechnologyModesto, CARespond and remain responsible for consistent communication with field services management quickly (typically within 24 hours of contact, but may vary depending on the project/assignment/task/client/location being supported). Your hours and locations may vary week to week, including occasional weekends; some early morning hours are possible, and/or holidays based on store/client requirements.
Fire Alarm Installer and Service Technician Cosco Fire Protection IncFire Alarm Installer and Service TechnicianLivermore, CAThe Fire Alarm Installation / Service Technician is responsible for installing, testing, inspecting, troubleshooting, and maintaining fire alarm systems in commercial, industrial, and residential buildings. In additional to the hourly rate the company pays to the Local Union Trust Fund, on behalf of the employee, $28.70 per hour for health and welfare benefits.
NewInstaller TruTeamInstallerTurlock, CaliforniaQXO is North America’s largest distributor and installer of insulation; second-largest distributor of roofing products; second-largest publicly traded distributor of lumber and building materials; and largest distributor of waterproofing products. QXO is the fastest growing company in the $800 billion building products distribution industry and plans to become the tech-enabled leader by delivering best-in-class customer satisfaction and outsized returns for its shareholders.
Leaf Filter Installer LeafHomeLeaf Filter InstallerStockton, CA$150–$300Full timeFinancial Freedom – Single installers (full time) average $100k+ per year while team installers can surpass six figures. LeafFilter is America's #1-rated professionally installed gutter protection system, as rated by leading consumer magazines.
NewAcrylic Bath Installer Bath Concepts Independent DealersAcrylic Bath InstallerModesto, CaliforniaBath Concepts Independent Dealers is looking for passionate individuals like you to join our team and help us transform homes with top-tier bath solutions. • Remodel bathrooms in a single day using carpentry, trim carpentry, and construction skills.
Cabinetry Installer Sage SurfacesCabinetry InstallerModesto, CAIf you take pride in delivering precise, high‑quality cabinet installations, this 1099 subcontractor role gives you the opportunity to do just that-while enjoying the flexibility that comes with project-based work. As a 1099 Cabinetry Installer, your day will start with preparing your tools and gathering the materials needed for each installation.
Project-Based Display Installer Footprint Retail ServicesProject-Based Display InstallerLivermore, CA$22–$25 / hourYoull help install displays and fixtures inside large national store locations, supporting brand launches and in-store updates. This is a hands-on field-based role ideal for someone who enjoys active work, team projects, and working in different store environments.
Sign and Graphics Installer for Large Format Graphics Nation Wide K5 Signs & Graphics IncSign and Graphics Installer for Large Format Graphics Nation WideStockton, CAAs an Installer, you will be traveling to a variety of worksite locations, and installing signs, graphics, window tint and frost, and more based on the specifications and needs of that specific job site. The ideal candidate can lift and move heavy objects, can read layout proofs, can easily use a laser, drill and tape measure, and can obey all health and safety regulations to promote a safe working environment.
Installer Truteam LLCInstallerTurlock, CA$13–$30 / hourEmployee Referral Bonus Paid Military Leave Tuition Reimbursement * Length of Service Award Compensation Range $13.00 - $30.00 The actual base salary a successful candidate will be offered within this range will vary based on factors relevant to the position. Products include insulation, fireplaces, gutters, mirrors and shelving, garage doors, windows, shower enclosures, home wrap and any other products sold by the company.
Fence Installer Pinnacle Recruitment ServicesFence InstallerStockton, CaliforniaAs a Fence Technician, you will install, relocate, and remove temporary fencing at customer job sites while operating company vehicles, using hand and power tools, and ensuring projects are completed safely and efficiently. This is an excellent opportunity for someone who enjoys working outdoors, staying active, and taking pride in delivering quality workmanship.
HVAC Lead Installer American Residential Services LLCHVAC Lead InstallerModesto, CA$40–$60 / hourJoin ARS, the nation's largest provider of residential HVAC, plumbing, and electrical services with 7,000+ team members and over 45 years of experience. Disassemble and remove outdated HVAC systems, then install, start up, and troubleshoot new residential HVAC systems.
Direct-To-Home Full Time Installation Technician - Turlock, CA Vivint LLCDirect-To-Home Full Time Installation Technician - Turlock, CATurlock, CA$180–$350Ability to climb ladders (up to 14 feet, including ability when carrying tools to meet weight capacity requirements for company-approved ladders, i.e. 375 lbs) and work in confined spaces like attics. We deliver innovative solutions that make our customers' lives easier-helping them power, protect, and intelligently manage their homes and businesses.
Sr. Construction Manager, Energy Projects Tesla IncSr. Construction Manager, Energy ProjectsModesto, CA$72,000–$156,600 / yearThe Commercial Sr Construction Manager's primary responsibility is to lead and oversee project teams, including in-house installers, subcontractors, and vendors, ensuring optimal performance and alignment with project goals. Along with competitive pay, as a full-time Tesla employee, you are eligible for the following benefits at day 1 of hire: Medical plans > plan options with $0 payroll deduction.
Installation Team Leader - Field Project Supervisor Sage SurfacesInstallation Team Leader - Field Project SupervisorModesto, CAFull timeAs our Installation Team Leader - Field Project Supervisor, you'll oversee every aspect of the installation process, from accurate field measurements to coordinating schedules and supervising certified installers. If you're organized, detail-oriented, and skilled at managing installation teams, this is your opportunity to lead projects that deliver exceptional results.
Installation Manager Bath Concepts Independent DealersInstallation ManagerStockton, CaliforniaBath Concepts Independent Dealers is a trusted, locally operated remodeling company known for delivering stylish, low-maintenance, and cost-effective bath, roofing, siding, and window solutions to homeowners, commercial clients, and customers with accessibility needs. This is a full-time, hands-on leadership role ideal for someone with a background in construction, installation, and quality control who’s ready to manage a dynamic team and ensure exceptional customer experiences from start to finish.
Installation Technician CMS NexttechInstallation TechnicianModesto, CACompany Vehicle: Hit the road in a fully equipped van, gas card includedStart Your Day from Home: Dispatched directly from home for daily convenienceGet Paid for All Your Time: Paid port-to-port travel means no unpaid downtimeTool Allowance: Keep your gear sharp — we’ve got you coveredProfessional Growth: Paid training, certification support, and education reimbursementOutstanding Benefits: Knowledge of the manufacturer’s installation practices and codes for small refrigeration equipment, and walk-in boxes, Ice machines, Soda/Fountain machines, rack, supermarket, multiple compressor installations.
Design Consultant North Bay: Napa, Concord, Livermore Springs Window Fashions LLCDesign Consultant North Bay: Napa, Concord, LivermoreLivermore, CAValuable hands-on experience with big box retailers: focused on selling and customer service Paid on-the-job training; in-depth product knowledge sessions via online courses, live online classes, and live sessions in store Competitive base salary plus bonus and top-notch benefits Compensation for commuting expenses Exposure to other roles and functions within SWF Career advancement opportunities Vehicle program provided. We offer a newly designed training program to ensure our recent hired associates are starting their sales career with the right resources and tools to be successful.
Senior Channel Marketing Manager Generac Power Systems IncSenior Channel Marketing ManagerCA$140,000–$180,000 / yearAnalytical Rigor: Experience building funnel and conversion models for channel or partner programs, including the ability to define lead volume requirements, model conversion rates across the partner lifecycle, and tie activity back to revenue targets. While our primary focus is direct engagement with dealers, you will also strategically partner with our distribution network as a key path to market, leveraging those channels to broaden our reach and ensure seamless product availability.
NewField Service Professional -Modesto, CA Vivint LLCField Service Professional -Modesto, CAModesto, CA$24.81–$27.65 / hourYou will be the face of Vivint, installing cutting-edge smart home technology while proactively identifying and selling upgraded solutions to provide customers with total peace of mind. Ability to climb ladders (up to 14 feet, including ability when carrying tools to meet weight capacity requirements for company-approved ladders, i.e. 375 lbs) and work in confined spaces like attics.
NewLandscape Installation Laborer Hire Up Staffing ServicesLandscape Installation LaborerModesto, CAThe Landscape Installation Laborer works under the direction of the Crew Leader and Installation Team and is responsible for performing physical labor, preparing jobsites, handling materials, and assisting with landscape installations. Our client is committed to delivering high-quality residential and commercial landscape projects and is looking for team members who take pride in their work, value safety, and enjoy working outdoors.
NewScheduling Coordinator TUFF SHED. INC.Scheduling CoordinatorStockton, CAHands-on computer skills in Microsoft Office and Internet applications required; experience in utilizing Customer Relations Management (CRM) software - including JDEdwards, Salesforce or similar systems is highly preferred. Prepare Installer Dispatches for sub-contractors - verify orders, assign product serial number, create Installer purchase orders, assign Installer rates (and any additional adjustments).
Residential Glazier The Glass GuruResidential GlazierLodi, CaliforniaIf it's not possible to safely perform a quality service or installation on the date promised, effectively note all issues, and required materials necessary to complete the installation to the customer’s satisfaction at a later date. Upon arrival at customer’s home, validate the work to be completed, the product(s) to be installed, installation location(s), and the estimated time it will take to complete the job, and customer expectations, and manage those expectations accordingly.
Fire Sprinkler Fitter Sciens Building Solutions, LLCFire Sprinkler FitterLodi, CA$40–$48 / hourBe physically fit to perform the demanding work of the trade, including frequent lifting of up to 25 pounds, maximum occasional lifting up to 50 pounds; able to work from heights and climb ladders; standing and walking for most of the workday. Sciens Building Solutions is seeking an experienced Fire Sprinkler Fitter to provide installation services of all forms of fire sprinkler systems and components.
Customer Service Manager (Building Materials) All Kingspan and Affiliate CompaniesCustomer Service Manager (Building Materials)Modesto, CaliforniaKingspan Insulated Panels North America, a division of the Kingspan Group plc headquartered in Ireland, is a global and trusted leader in the design, manufacturing, and supply of high-performance sustainable building products and solutions for the construction industry. Through the utilization of experience and effective leadership techniques, the ideal candidate will optimize tools and processes to support the team in delivering results and ultimately raise the level of customer satisfaction through elevated levels of service across the team.
Service Technician Motive CompaniesService TechnicianStockton, CA$26–$32 / hourMust maintain an acceptable driving record required, pass annual drug tests (random testing required for certain customers), and maintain an acceptable background check in accordance with company and customer requirements and local laws/regulations. WORKING ENVIRONMENT: Travels to different locations/companies and contends with various working conditions Including remote locations, primitive locations, and outdoors.
NewSales Design Consultant TUFF SHED. INC.Sales Design ConsultantTurlock, CA$60,000–$100,000 / yearTuff Shed was established in 1981 and has since developed into Americas largest manufacturer and installer of storage buildings and garages, having built more than one million buildings for satisfied customers. With a good attitude and solid work ethic there are virtually no limits for growth as more experienced and successful Sales Design Consultants could earn in excess of $100,000.
Fire Sprinkler Fitter Cen Cal Fire SystemsFire Sprinkler FitterLodi, CaliforniaBe physically fit to perform the demanding work of the trade, including frequent lifting of up to 25 pounds, maximum occasional lifting up to 50 pounds; able to work from heights and climb ladders; standing and walking for most of the workday. Sciens Building Solutions is seeking an experienced Fire Sprinkler Fitter to provide installation services of all forms of fire sprinkler systems and components.
BUILDING MATERIALS CUSTOMER SERVICE MANAGER Kingspan Group PlcBUILDING MATERIALS CUSTOMER SERVICE MANAGERModesto, CAKingspan Insulated Panels North America, a division of the Kingspan Group plc headquartered in Ireland, is a global and trusted leader in the design, manufacturing, and supply of high-performance sustainable building products and solutions for the construction industry. Through the utilization of experience and effective leadership techniques, the ideal candidate will optimize tools and processes to support the team in delivering results and ultimately raise the level of customer satisfaction through elevated levels of service across the team.
Installation Technician lll Allied UniversalInstallation Technician lllLivermore, CAMust possess a valid Driver's License with at least one year of driving experience, a clean driving record (no major violations within last 36 months, no more than 1 accident in last 24 months, no more than one minor moving violation in last 24 months), a minimum level of insurance as required by Company policy, and the ability to safely operate a company issued vehicle. RESPONSIBILITIES: Install, program and configure electronic security systems for commercial clients, including, door access control, CCTV, intrusion detection, low-voltage communication, electronic locks, point sensors, signaling devices, and other security systems.
Licensed Low Voltage Technician WalmartLicensed Low Voltage TechnicianCeres, CAFull timeBy making Walmart a welcoming place where all people feel like they belong, we're able to engage associates, strengthen our business, improve our ability to serve customers, and support the communities where we operate. Communities: Walmart thrives when we take a shared value approach, complementing business with philanthropy to strengthen the communities where we operate and prioritize issues that are meaningful to our business and all customers.
Fabricator SilvercoteFabricatorStockton, CaliforniaAs a Fabricator, you will operate a band saw, and other types of saws, to custom fabricate fiberglass, mineral wool, perlite, and many other types of specialized insulation. At Service Partners, you will be part of a diverse and inclusive team that reflects our values of integrity and innovation by delivering solutions that make a difference in the communities we serve.
Sales Representative DaBellaSales RepresentativeModesto, CaliforniaSince 2011, DaBella has grown to become one of the largest home improvement services companies in the United States, currently with 60+ branches in over 20 states. We work with only the best American manufacturers like GAF, James Hardie, Glasswing & Fairfield Windows, and Sentrel Bath Systems just to name a few.
NewFabricator Service PartnersFabricatorStockton, CA$13–$30 / hourAs a Fabricator, you will operate a band saw, and other types of saws, to custom fabricate fiberglass, mineral wool, perlite, and many other types of specialized insulation. At Service Partners, you will be part of a diverse and inclusive team that reflects our values of integrity and innovation by delivering solutions that make a difference in the communities we serve.
Project Manager-Lathrop Nucor CorporationProject Manager-LathropLathrop, California$66,000–$125,000Demonstrated construction project management experience or at least ten years of reinforcing steel sales, detailing, fabrication, placing or related steel industry experience. Building & Construction - Knowledge of materials, methods and tools involved in the construction or repair of buildings or other structures; general business knowledge and an understanding of how Nucor makes money.
New94F Special Electronic Devices Repairer National Guard OMD94F Special Electronic Devices RepairerStockton, CA$200–$250 / weekSpecific duties of the Special Electronic Devices Repairer include: testing instruments, navigational controls, and simulators; reading technical diagrams and manuals; replacing parts; ensuring quality control measures; and troubleshooting and inspecting equipment. Age Requirements: Must be between the ages of 17 and 35 Electrical electronics installers repairers commercial and industrial equipment electric motor power tool powerhouse substation relay equipment
New91C Utilities Equipment Repairer National Guard OMD91C Utilities Equipment RepairerStockton, CA$200–$250 / weekSome of your duties may include maintaining, testing, and repairing electric motors; inspecting and repairing electrical equipment; inspecting and repairing electric instruments, replacing worn gaskets and sealing in watertight electrical equipment; and maintaining and repairing gasoline engine systems, air conditioner electrical systems, and portable heater fuel/electrical systems. • Inspect and repair air conditioner electrical systems, air conditioner vapor systems, refrigeration unit electrical systems, portable heater fuel/electrical systems, fire extinguisher recharging systems and fire extinguishers/valves.