Pest Control Technician Ehrlich Pest ControlPest Control TechnicianNew York City, New York$20–$23 / hourYou will be responsible for identifying and eliminating pests from residential properties by conducting thorough inspections, determining the type of pest infestation, applying appropriate treatments like pesticides and traps, and providing preventative measures to prevent future infestations, all while adhering to safety regulations and communicating with clients about pest control solutions. By applying to this job, you agree to receive initial texts from systems used on behalf of Rentokil North America, Inc., possibly including Workday, Loop, and HireVue.
Sr. QC Technician - 1st Shift Thermo Fisher Scientific IncSr. QC Technician - 1st ShiftFair Lawn, NJAt least 120 hours paid time off (PTO), 10 paid holidays annually, paid parental leave (3 weeks for bonding and 8 weeks for caregiver leave), accident and life insurance, and short- and long-term disability in accordance with company policy. Discover Impactful Work: As part of the Thermo Fisher Scientific team, youll discover meaningful work that makes a positive impact on a global scale.
Fire Extinguisher Technician Impact Fire Services, LLCFire Extinguisher TechnicianSuffolk County, NYAt Impact Fire Services you can learn a trade with multiple career paths in fire and life safety while benefiting from an employee focused company culture that allows you to gain mentorship and training provided by leading experts at one of the fastest growing companies in the industry. The Technician will be responsible for providing inspections, selling, and servicing a variety of fire suppression components including fire extinguishers, emergency lights and other fire products in a professional and timely manner.
Fleet Technician (Gas) First StudentFleet Technician (Gas)Brooklyn, New YorkIn the state of Washington, all technician and driving positions, including but not limited to van drivers and any other position requiring employees to drive a company-owned vehicle, are considered safety-sensitive and are therefore subject to drug and alcohol testing, including cannabis. As a gas-powered vehicle Mechanic with First Student, you will help maintain and repair Ford E-350, Ford E-450, Ford Transit, and Ford 2024 EV.
Senior Laboratory Technician, Operations - Long Island City, NY DSMSenior Laboratory Technician, Operations - Long Island City, NYNy, NY$60,000–$80,000 / yearWhether it's fragrance that helps you focus, alternative meat that's better for the planet, or reducing sugar without losing flavor, this is where you help shape the future of nutrition, health, and beauty for everyone, everywhere. You Bring: Bachelor's degree in biology, chemistry, or a related life science; master's degree in lab management or a life science discipline is a plus.
Specimen Technician - 3rd Shift Pride GlobalSpecimen Technician - 3rd ShiftClifton, NJ$20–$24 / hourThis applies to direct care staff (Examples: RN, LPN, Nurse Aides, Therapists) referred to Kentucky nursing facilities, assisted living communities, or long-term care facilities, in accordance with KRS 216.793. (Including building worklists, aliquoting specimens into sample cups, checking specimens for clots and fibrin, inoculation, slide preparation).
Technicians Keeler Motor Car CompanyTechniciansWestport, CTThis is an excellent opportunity for a highly skilled technician to work in a state-of-the-art facility with a respected luxury brand, advanced diagnostic equipment, and a strong customer-focused culture. Lexus of Westport is seeking an experienced Master Technician with Lexus and/or Toyota experience to join our award-winning service team.
Nursing Technician - CTICU St. Catherine of Siena Medical CenterNursing Technician - CTICUWest Islip, NY$27.68–$35.99 / hourOur reputation for excellence is built on great choices and empowered leadership, and fosters a team thats focused on evidence-based practice, continual learning and exceptional quality of care. In addition to the estimated base pay provided, Catholic Health offers generous benefits packages, generous tuition assistance, a defined benefit pension plan, and a culture that supports professional and educational growth.
Emergency Room Technician - Per Diem St. Catherine of Siena Medical CenterEmergency Room Technician - Per DiemRockville Centre, NYRanked among the top hospitals in New York State, Mercy offers a NYS designated Stroke Center, Breast Imaging Center of Excellence, Level III Neonatal Intensive Care Unit, and has received Pathway to Excellence designation from the American Nurses Credentialing Center - the only hospital in the region and one of only two in NY State to receive this prestigious award. Explore a career with Mercy Hospital, a 375-bed not-for-profit hospital and member of Catholic Health that has been serving the healthcare needs for the residents of Nassau County and its surrounding areas since 1913.
CAS Technician - New Jersey NCH CorporationCAS Technician - New JerseyNew Jersey, NJRequired work activities include but are not limited to, climbing and descending stairs and ladders (from 10-30' in height), sometimes while carrying drums of chemicals weighing up to 75 pounds while maintaining a 3-point ladder contact (per OSHA rules). Actual salaries will vary and may be above or below the range based on various factors including but not limited to: experience, education, training, location, merit system, quantity or quality of production, responsibilities and regular and/or necessary travel.
Patient Care Technician - Psychiatry FT Days Holy Name Medical CenterPatient Care Technician - Psychiatry FT DaysTeaneck, NJ$18–$19.25 / hourFull timeAssists with personal hygiene care for patients: provides complete and partial bed baths, assists patients with tub baths and showers, provides PM Care, incontinence skin care assists with care of hair and nails, assists with shampoos as ordered and shaving provides skin care and back rubs and makes occupied and unoccupied beds. Holy Name is New Jersey's only independent Catholic health system, comprising a 361-bed acute care hospital, a renowned cancer center, a state-of-the-art fitness center, a residential hospice, a prestigious nursing school, and an extensive physician network.
HVAC Service Technician Mirabito HoldingsHVAC Service TechnicianNewburgh, New YorkService and repair hot air, boiler, water heating, A/C, and heat pump systems. That means you’ll never feel like just a number, but you’ll still enjoy the security and opportunities that come with being part of a growing, established team.
Pharmacy Technician-Per Diem Stamford HealthPharmacy Technician-Per DiemStamford, CTAssists pharmacists in providing timely pharmacy services including but not limited to drug delivery, resolution of Pyxis and Talyst problems, urgent patient care needs, and routine patient specific unit dose medication selection. The Pharmacy Tech plays a crucial role in patient-centered care by assisting pharmacists with medication dispensing by ensuring accuracy when packaging, dispensing, and transporting medications which are crucial steps to ensure patient safety.
Technician I PT Nights UCHC SWSP Rutgers The State University of New JerseyTechnician I PT Nights UCHC SWSPNewark, NJImmunization Requirements Under Policy 100.3.1 Immunization Policy for Covered Individuals, if employment will commence during Flu Season, Rutgers University may require certain prospective employees to provide proof that they are vaccinated against Seasonal Influenza for the current Flu Season unless the University has granted the individual a medical or religious exemption. Overview University Correctional Health Care (UCHC) operating within Rutgers The State University of New Jersey is dedicated to excellence in providing physical, mental health, dental, and sex offender treatment services to those involved in the criminal justice systems in New Jersey.
Test Technicians HUDSON CITY CONSULTING LIMITED LIABTest TechniciansKearny, NJ$26–$32 / hourFull timeThe Electronic Test Techs are responsible for testing, troubleshooting and repairing subassemblies and final assemblies down to the component level for products that protect and support switchboard gear, renewable energy, transportation, defense and other applications worldwide. Experience with electrical testing equipment such as Ratiometers, Hi-Pots, Volt meters.
NewAppliance Repair Technician RD APPLIANCE SERVICE, CORP.Appliance Repair TechnicianPlainview, NYFull timeWhile performing the duties of this job, the employee is occasionally required to stand; walk; sit; reach with hands and arms; climb or balance; stoop, kneel, crouch, or crawl; and talk or hear. As an Appliance Repair Technician, you are a key member of the team responsible for the quality and efficient maintenance and repair of appliances and other equipment.
NewAV/IT Support Technician - AV Event & End User Support AstreyaAV/IT Support Technician - AV Event & End User SupportNew York, New York23.49 - $37.10 USD (Hourly) Please note that the salary information provided herein is base pay only (gross); it does not include other forms of compensation which may or may not apply to this specific position, namely, performance-based bonuses, benefits-related payments, or other general incentives - none of which are guaranteed, may be subject to specific eligibility requirements, and are wholly within the discretion of Astreya to remit. The role requires flexibility to shift between event delivery, AV/UCC support, and Tier 1 end-user support based on business priorities, with scheduled and business-critical events taking priority.
NewField Service Technician 10BeautyField Service TechnicianNew York, NY$65,000–$80,000 / year2–4 years of hands-on experience in a field service, technical support, or systems maintenance role, or a recent degree with relevant internship, co-op, lab, or capstone project experience working with electro-mechanical systems. Perform on-site installation, commissioning, preventive maintenance, and repair of electro-mechanical and networked systems at customer locations in salons, stores and hotels.
Hvac/ R Technician Smart Care Equipment SolutionsHvac/ R TechnicianNew Jersey, NJOur offering of comprehensive mechanical services includes hot side cooking equipment, stand-alone refrigeration, specialty coffee and beverage, complex rack refrigeration and HVAC. Rite-Air Mechanical Services, an affiliate of Smart Care Equipment Solutions, is a full-service HVAC/R contractor specializing in commercial air conditioning, heating, and refrigeration.
HVAC Service Technician Haddad Plumbing & HeatingHVAC Service TechnicianNewark, NJ$20–$25 / hourHaddad Plumbing and Heating Inc. is a Commercial Plumbing and HVAC company dedicated to:Providing premier workmanship and consistent delivery of reliable plumbing, heating and HVAC systems. The HVAC Service Technician will support the HVAC department by preforming preventative, corrective, and predictive maintenance, troubleshooting and service of commercial and industrial HVAC systems.
Pest Control Technician Rentokil Initial plcPest Control TechnicianBronx, NY$20–$23 / hourYou will be responsible for identifying and eliminating pests from residential properties by conducting thorough inspections, determining the type of pest infestation, applying appropriate treatments like pesticides and traps, and providing preventative measures to prevent future infestations, all while adhering to safety regulations and communicating with clients about pest control solutions. By applying to this job, you agree to receive initial texts from systems used on behalf of Rentokil North America, Inc., possibly including Workday, Loop, and HireVue.
Optometric Technician Metro Optics Westchester Square EssilorLuxottica SAOptometric Technician Metro Optics Westchester SquareBronx, NY$21.57–$30.72 / hourIf you would like to provide feedback regarding an active job posting, or if you are an individual with a disability who would like to request a reasonable accommodation, please call the EssilorLuxottica SpeakUp Hotline at 844-303-0229 (be sure to provide your name, job id number, and contact information so that we may follow up in a timely manner) or email HRCompliance@luxotticaretail.com. We provide a wide range of vision care services including full-scope optometric patient care, ocular disease management, routine comprehensive eye exams, refractive services, Vision Therapy, and more.
Ophthalmic Technician EssilorLuxottica SAOphthalmic TechnicianEdgewater, NJ$21.57–$30.72 / hourPerforms preliminary evaluations including but not limited to obtaining accurate and detailed patient histories, reviewing medication lists carefully, visual acuities, motility evaluations, pupil and angle assessments, refraction, pachymetry, applanation tonometry, and pupil dilation. If you would like to provide feedback regarding an active job posting, or if you are an individual with a disability who would like to request a reasonable accommodation, please call the EssilorLuxottica SpeakUp Hotline at 844-303-0229 (be sure to provide your name, job id number, and contact information so that we may follow up in a timely manner) or email HRCompliance@luxotticaretail.com.
Automotive Service Technician Garavel Chrysler Jeep Dodge RamAutomotive Service TechnicianNorwalk, ConnecticutPhysical Demands : While performing the duties of an Automotive Service Technician, the employee is regularly required to stand; walk; use hands to finger, handle, or feel; reach with hands and arms; stoop, kneel, crouch, or crawl; and talk or hear. Test drive vehicles and test components and systems, using diagnostic tools and special service equipment.
Lead Technician PuroCleanLead TechnicianArdsley, New YorkWorking to ensure all customer needs are met in a kind and sympathetic way, our Lead Technicians take pride in going above and beyond customer expectations in their times of need by providing a world class level of service which sets us apart from our competitors in the industry. Company and Culture: PuroClean, a leader in emergency property restoration services, helps families and businesses overcome the devastating setbacks caused by water, fire, mold, biohazard, and other conditions resulting in property damage.
Route Service And Sales Technician Auto-Chlor SystemRoute Service And Sales TechnicianDanbury, CT$23–$24 / hourGrowth & Learning Focus- Willingness to learn and confidence to apply training when working independently managing your own route. We're looking for people ready to work independently, use their hands, and build lasting customer relationships.
Emergency Restoration Technician PuroCleanEmergency Restoration TechnicianFair Lawn, NJWorking to ensure all customer needs are met in a kind and sympathetic way, our project technicians assist their teams and supervisors with all aspects of restoration work on residential and commercial jobsites, as well as maintain vehicles, equipment, and assets of the business. Company and Culture: PuroClean, a leader in emergency property restoration services, helps families and businesses overcome the devastating setbacks caused by water, fire, mold, biohazard, and other conditions resulting in property damage.
Emergency Restoration Technician PuroClean Emergency Restoration SpecialistsEmergency Restoration TechnicianFair Lawn, New Jersey$22–$26 / hourWorking to ensure all customer needs are met in a kind and sympathetic way, our project technicians assist their teams and supervisors with all aspects of restoration work on residential and commercial jobsites, as well as maintain vehicles, equipment, and assets of the business. Company and Culture: PuroClean, a leader in emergency property restoration services, helps families and businesses overcome the devastating setbacks caused by water, fire, mold, biohazard, and other conditions resulting in property damage.
Lab Technician Global Channel ManagementLab TechnicianStamford, ConnecticutLab Technician needs 1 years experience as a lab technician or other retail packaging field in a manufacturing environment or a bachelors degree in a technical field like Packaging Science with 0-3 years experience. Lab Technician duties: Involves active movement doing different activities, can involve setup/repair of small equipment, filling/capping/labeling of bottles.
Dental Technician I - Procera Complete EnvistaDental Technician I - Procera CompleteMahwah, NJ$26–$31.80 / hourEnvista will consider unsolicited referrals and/or resumes submitted by vendors such as search firms, staffing agencies, professional recruiters, fee-based referral services and recruiting agencies (Agency) to have been referred by the Agency free of charge and Envista will not pay a fee for any placement resulting from the receipt such unsolicited resumes. An Agency must obtain advance written approval from Envista's internal Talent Acquisition or Human Resources team to submit resumes, and then only in conjunction with a valid fully-executed contract approved by the Global Talent Acquisition leader and in response to a specific job opening.
Project Technician PuroCleanProject TechnicianCranford, NJWorking to ensure all customer needs are met in a kind and sympathetic way, our project technicians assist their teams and supervisors with all aspects of restoration work on residential and commercial jobsites, as well as maintain vehicles, equipment, and assets of the business. PuroClean, a leader in emergency property restoration services, helps families and businesses overcome the devastating setbacks caused by water, fire, mold, biohazard, and other conditions resulting in property damage.
Pulmonary Function Technician Per Diem Northwell HealthPulmonary Function Technician Per DiemNorwalk, CTReviewing lab procedures and results and ensuring quality testing is performed Provides back up for Point of Care testing Coordinator for arterial blood gas, lactate and co-oximetry testing. Northwell cares for more than three million people annually in the New York metro area, including Long Island, the Hudson Valley, Connecticut and beyond, thanks to philanthropic support from our communities.
Histology Technician I (Overnight) Vicar Operating dba VCAHistology Technician I (Overnight)Lake Success, New YorkOur products and services span 90+ reference laboratories around the globe; in-house diagnostic laboratory instruments and consumables, including rapid assay diagnostic products and digital cytology services; local and cloud-based data services; practice information management software and related software and support; veterinary imaging and technology; veterinary professional education and training; and board-certified specialist support services. Any resumes, curriculum vitae, and other unsolicited assistance from search firms that do not have a written search agreement or position-specific requisition submitted to any Associate of Antech will be deemed the sole property of Antech and no fee will be paid in the event the candidate is hired by Antech.
LensCrafters - Optometric Technician - New York, NY EssilorLuxottica SALensCrafters - Optometric Technician - New York, NYNew York, NY$23.52–$30.72 / hourIf you would like to provide feedback regarding an active job posting, or if you are an individual with a disability who would like to request a reasonable accommodation, please call the EssilorLuxottica SpeakUp Hotline at 844-303-0229 (be sure to provide your name, job id number, and contact information so that we may follow up in a timely manner) or email HRCompliance@luxotticaretail.com. LensCrafters is part of EssilorLuxottica, a global leader in the design, manufacture and distribution of world-class vision care products, including iconic eyewear, advanced lens technology and cutting-edge digital solutions.
Pest Control Technician - $1500 Sign on Bonus for Licensed Techs Rentokil Initial plcPest Control Technician - $1500 Sign on Bonus for Licensed TechsParamus, NJ$18–$23 / hourYou will be responsible for identifying and eliminating pests from residential properties by conducting thorough inspections, determining the type of pest infestation, applying appropriate treatments like pesticides and traps, and providing preventative measures to prevent future infestations, all while adhering to safety regulations and communicating with clients about pest control solutions. By applying to this job, you agree to receive initial texts from systems used on behalf of Rentokil North America, Inc., possibly including Workday, Loop, and HireVue.
Pest Control Technician - $1,500 Sign-On Bonus Rentokil Initial plcPest Control Technician - $1,500 Sign-On BonusNorwalk, CT$17–$23 / hourYou will be responsible for identifying and eliminating pests from residential properties by conducting thorough inspections, determining the type of pest infestation, applying appropriate treatments like pesticides and traps, and providing preventative measures to prevent future infestations, all while adhering to safety regulations and communicating with clients about pest control solutions. By applying to this job, you agree to receive initial texts from systems used on behalf of Rentokil North America, Inc., possibly including Workday, Loop, and HireVue.
Dental Technician II - Procera Complete EnvistaDental Technician II - Procera CompleteMahwah, NJ$29.40–$35.90 / hourEnvista will consider unsolicited referrals and/or resumes submitted by vendors such as search firms, staffing agencies, professional recruiters, fee-based referral services and recruiting agencies (Agency) to have been referred by the Agency free of charge and Envista will not pay a fee for any placement resulting from the receipt such unsolicited resumes. An Agency must obtain advance written approval from Envista's internal Talent Acquisition or Human Resources team to submit resumes, and then only in conjunction with a valid fully-executed contract approved by the Global Talent Acquisition leader and in response to a specific job opening.
Route Service and Sales Technician Auto-Chlor System LLCRoute Service and Sales TechnicianCT$22–$24 / hourGrowth & Learning Focus - Willingness to learn and confidence to apply training when working independently managing your own route. We're looking for people ready to work independently, use their hands, and build lasting customer relationships.
Patient Care Technician (PCT) - Full Time Evenings Holy Name Medical CenterPatient Care Technician (PCT) - Full Time EveningsTeaneck, NJ$18–$22.50 / hourFull timeAssists with personal hygiene care for patients: provides complete and partial bed baths, assists patients with tub baths and showers, provides PM Care, incontinence skin care assists with care of hair and nails, assists with shampoos as ordered and shaving provides skin care and back rubs and makes occupied and unoccupied beds. Holy Name is New Jersey's only independent Catholic health system, comprising a 361-bed acute care hospital, a renowned cancer center, a state-of-the-art fitness center, a residential hospice, a prestigious nursing school, and an extensive physician network.
CNC Generating Technician CWW Back End Nights (6:00pm-6:00am Thursday- Saturday, every other Wednesday) - 15% Differential ASMLCNC Generating Technician CWW Back End Nights (6:00pm-6:00am Thursday- Saturday, every other Wednesday) - 15% DifferentialWilton, ConnecticutMaintain continuity among work shifts by documenting and communicating actions, irregularities, and continuing needs to supervisors and co-workers on other shifts. Routinely required to sit; walk; talk; hear; use hands to keyboard, finger, handle, and feel; stoop, kneel, crouch, twist, reach, and stretch.
Nursing Technician - Pre-Admission Testing - PD Catholic HealthNursing Technician - Pre-Admission Testing - PDBay Shore, New YorkUnder the direction of a Registered Nurse/Licensed Practical Nurse, assists with patient visits to PST re: reception, equipment preparation, vital signs, obtaining actual weights, orientation to surroundings and implementation of safety measures. Overview: Good Samaritan University Hospital Medical Center is a 537- bed (including 100 nursing home beds) teaching hospital and a member of Catholic Health Services of Long Island.
GMP Technician I Weill Cornell Medical CollegeGMP Technician INew York, NY$25.73–$28.86 / hourCornell welcomes students, faculty, and staff with diverse backgrounds from across the globe to pursue world-class education and career opportunities, to further the founding principle of "any person, any study." Cornell University embraces diversity in its workforce and seeks job candidates who will contribute to a climate that supports students, faculty, and staff of all identities and backgrounds.
ER Technician-PD Catholic HealthER Technician-PDRockville Centre, New YorkRanked among the top hospitals in New York State, Mercy offers a NYS designated Stroke Center, Breast Imaging Center of Excellence, Level III Neonatal Intensive Care Unit, and has received Pathway to Excellence designation from the American Nurses Credentialing Center – the only hospital in the region and one of only two in NY State to receive this prestigious award. Overview: If you're looking for a great place to grow your career at a community hospital focused on excellent patient experience and nursing excellence, Mercy Hospital, a member of Catholic Health, may be what you are seeking.
Patient Care Technician (PCT) - Med Surg Respiratory (6M) - Part Time Nights Holy Name Medical CenterPatient Care Technician (PCT) - Med Surg Respiratory (6M) - Part Time NightsTeaneck, NJ$18–$22.50 / hourPart timeAssists with personal hygiene care for patients: provides complete and partial bed baths, assists patients with tub baths and showers, provides PM Care, incontinence skin care assists with care of hair and nails, assists with shampoos as ordered and shaving provides skin care and back rubs and makes occupied and unoccupied beds. Holy Name is New Jersey's only independent Catholic health system, comprising a 361-bed acute care hospital, a renowned cancer center, a state-of-the-art fitness center, a residential hospice, a prestigious nursing school, and an extensive physician network.
Senior Service Technician (HVAC) Ambient EnterprisesSenior Service Technician (HVAC)New York, NY$55–$65 / hourOur consulting group provides a full array of commissioning services for both new and existing buildings, and our technical services group provides start-up services on complex HVAC equipment from a wide range of manufacturers. Specializing in the optimization of complex building systems, our team's diversified skill set provides value to our clients from the design stages of new construction all the way through operating existing buildings.
Low Voltage Assistant Fire Technician PROTECTION TECHNOLOGIES LLCLow Voltage Assistant Fire TechnicianPine Brook, NJ$45,000–$55,000 / yearFull timeProtection Technologies LLC is seeking a motivated Assistant Low Voltage Fire Technician to support the installation, servicing, and maintenance of fire alarm and life safety systems. This role works under the supervision of a Lead Fire Technician and will gain hands-on experience in commercial, multi-family, and critical infrastructure environments.
Optometric Technician, Professional Eyecare Associates EssilorLuxottica SAOptometric Technician, Professional Eyecare AssociatesParamus, NJ$21.57–$30.72 / hourIf you would like to provide feedback regarding an active job posting, or if you are an individual with a disability who would like to request a reasonable accommodation, please call the EssilorLuxottica SpeakUp Hotline at 844-303-0229 (be sure to provide your name, job id number, and contact information so that we may follow up in a timely manner) or email HRCompliance@luxotticaretail.com. We provide a wide range of vision care services including full-scope optometric patient care, ocular disease management, routine comprehensive eye exams, refractive services, Vision Therapy, and more.
Dental Technician II - Procera Complete Envista Holdings CorpDental Technician II - Procera CompleteMahwah, NJ$29.40–$35.90 / hourEnvista will consider unsolicited referrals and/or resumes submitted by vendors such as search firms, staffing agencies, professional recruiters, fee-based referral services and recruiting agencies (Agency) to have been referred by the Agency free of charge and Envista will not pay a fee for any placement resulting from the receipt such unsolicited resumes. An Agency must obtain advance written approval from Envista's internal Talent Acquisition or Human Resources team to submit resumes, and then only in conjunction with a valid fully-executed contract approved by the Global Talent Acquisition leader and in response to a specific job opening.
Digital Pathology Technician HistoWiz, IncDigital Pathology TechnicianLong Island City, NYThis role is responsible for operating digital pathology scanners, reviewing image quality, managing digital image files, and maintaining the DreamPath paraffin block storage system to support recuts, additional staining, quality control, and client requests. The Digital Pathology Technician supports HistoWiz's high-throughput histology operations by producing high-quality Whole Slide Images (WSIs) from glass slides while maintaining accurate organization and traceability of archived histology materials.
Commercial HVAC Technician The Walters Co Airconditioning IncCommercial HVAC TechnicianNew Windsor, NYFull timeRepair or service Commercial heating, ventilating, and air conditioning (HVAC) systems to improve efficiency, such as by changing filters, cleaning ducts, or refilling non-toxic refrigerants. In this role, you will install, service, or repair heating and air conditioning systems in commercial establishments.