Full-Time

Field Service Technician 3

Posted on 5/9/2026

Comfort Systems USA

Comfort Systems USA

1,001-5,000 employees

National HVAC design, installation, service.

No salary listed

Houston, TX, USA

In Person

Position requires 80% travel domestically and internationally.

Category
Building Systems & HVAC (2)
,
Requirements
  • Significant project field experience is required in construction support, startup, repair, and maintenance work.
  • Experience with variable frequency drive startup and troubleshooting (Eaton and Allen-Bradley)
  • Experience with verification of compliance with ASHRAE, ASME, and other relevant codes and practices.
  • Experience with Centrifugal Chillers, Cooling Towers, VFD
  • Ability to travel extensively to both domestic and international job sites.
  • The ability to work in field construction conditions is required.
  • Must have or can obtain applicable safety certifications including but not limited to OSHA10 General Construction, NFPA-70E
  • Safe driving record
Responsibilities
  • Startup, preventative maintenance, and service of vertical turbine pumps and split coupled inline pumps.
  • Startup, preventative maintenance, and service of Cooling Towers (Evapco, Kelvion, Marley, SPX)
  • Startup, preventative maintenance, and service of Centrifugal Chillers (Trane, York, McQuay, Smardt)
  • Startup and troubleshooting variable frequency drives (Eaton and Allen-Bradley)
  • Install and repair power distribution systems including electric motors, motor control centers, and variable speed drives.
  • Close interface with other Field Service Technicians, Project Engineers, and Project managers, with the mechanical and electrical engineers, with service technicians, and with the client’s personnel
  • Assist the Production Department in assembly, or in training of factory personnel
  • Compile O&M information
  • Transmit critical O&M information during a project
  • Assist in compilation of the final sets of IOM manuals
  • Feedback from the field is an integral part of the position
  • Create legible “red-line” drawings to submit to Project Manager
  • Arrange for a timely hand-off from construction function
  • Direct the field commissioning of a project
  • Responsible for trouble-shooting all mechanical and electrical equipment
  • Provide documented commissioning of the mechanical and electrical portions (at a minimum) of the project
  • Assist in Quality Assurance and Quality Control functions
  • Will possibly perform or oversee QC checks
  • Other responsibilities as designated by TAS

Comfort Systems USA provides heating, ventilation, and air conditioning (HVAC) services across the United States. It combines multiple experienced HVAC firms into a national company that designs, installs, tunes, and maintains HVAC systems for a wide range of buildings, from schools and grocery stores to hospitals, museums, hotels, factories, and warehouses. The company works on both new installations and ongoing service, using specialized centers of excellence to ensure the right expertise for each project. Its goal is to offer the broadest possible technical capability and service for any HVAC need, anywhere and anytime.

Company Size

1,001-5,000

Company Stage

IPO

Headquarters

Houston, Texas

Founded

1997

Simplify Jobs

Simplify's Take

What believers are saying

  • Record $12.45B backlog as of March 31, 2026, provides multi-year visibility.
  • Acquired West electrical contractor adds $250M annualized revenue.
  • Q1 2026 revenue surged 57% to $2.87B with 51% organic growth.

What critics are saying

  • Labor shortages delay data center projects and erode margins in 6-12 months.
  • EMCOR Group captures contracts with 25% faster modular delivery.
  • Quanta Services undercuts electrical bids by 15% using telecom expertise.

What makes Comfort Systems USA unique

  • Technology sector drove 139% revenue growth to 56% of Q1 2026 sales via data centers.
  • Expanded modular capacity to 4 million square feet through 2025 acquisitions.
  • Serves hyperscalers Amazon, Alphabet, Microsoft with HVAC and electrical systems.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

Health Savings Account/Flexible Spending Account

401(k) Plan

401(k) Company Match

Paid Vacation

Paid Holidays

Sick Time

Flexible Work Hours

Hybrid Work Options

Telework

Wellness Program

Mental Health Support

Gym Membership

Conference Attendance Budget

Professional Development Budget

Family Planning Benefits

Fertility Treatment Support

Parent Periodic Leave

Stock Options

Company Equity

Phone/Internet Stipend

Home Office Stipend

Adoption Assistance

Pet Insurance

Employee Referral Bonus

Scholarship Program

Relocation Assistance

Tuition Reimbursement

Training Programs

Professional Certification Support

Mentorship Program

Meal Benefits

Commuter Benefits

Employee Discounts

Company Social Events

Company News

Yahoo Finance
Apr 13th, 2026
Comfort Systems backlog nearly doubles to $12B, driven by data center and AI infrastructure demand

Comfort Systems USA has entered 2026 with strong order momentum, supported by a record backlog approaching $12 billion at year-end 2025, nearly double the prior year. The surge reflects robust bookings, particularly in data centres, with technology-related work accounting for 45% of 2025 revenue, up from 33% previously. Fourth-quarter 2025 revenues rose 42% year-over-year to $2.65 billion, whilst earnings per share more than doubled. The backlog's extended duration, driven by larger and more complex projects, provides multi-year revenue visibility through 2027 and beyond. The company is expanding modular capacity and investing in workforce and acquisitions to support future demand. Key competitors include EMCOR Group and Quanta Services, which compete across data centre and infrastructure projects.

Yahoo Finance
Apr 7th, 2026
Comfort Systems USA stock up 54% in 2026 as AI data centre boom drives record $12B backlog

Comfort Systems USA, an HVAC company benefiting from AI infrastructure demand, has seen shares rise over 54% year-to-date through 6 April, whilst the S&P declined. The company has delivered 1,500% gains over five years. The firm reported a record backlog of nearly $12 billion in February, roughly double from the start of the year and up 27.3% quarter-over-quarter. Fourth-quarter revenue jumped 41.7% year-over-year whilst net income more than doubled. The company maintains a 10-year revenue compound annual growth rate of 21.3%. Comfort Systems USA serves the booming AI data centre market, which requires HVAC systems for cooling AI chips. The company also pursues acquisitions, including Feyen Zylstra Holdings and Meisner Electric last year, to expand market share alongside organic growth.

Yahoo Finance
Apr 6th, 2026
Comfort Systems scales modular capacity to 4M sq ft to capture data centre growth

Comfort Systems USA has raised its modular construction capacity to approximately 3 million square feet and plans to expand to nearly 4 million square feet by the end of 2026. The move comes as the company reported strong 2025 results, with revenue rising 29.5% year over year to $9.1 billion and earnings per share surging 97.8% to $28.88. The expansion responds to growing demand for prefabricated solutions, particularly in data centre projects driven by AI and cloud computing. Modular construction offers faster project timelines, improved labour productivity and enhanced quality control whilst addressing skilled labour constraints. The strategy positions Comfort Systems competitively against firms like AECOM and Jacobs Solutions, giving it advantages in execution speed and modular deployment whilst strengthening margins through its integrated design-build model.

Yahoo Finance
Mar 24th, 2026
Comfort Systems rallied on AI data centre demand, revenue up 20%

Comfort Systems USA has been highlighted as a top contributor in Brown Advisory Mid-Cap Growth Strategy's fourth-quarter 2025 investor letter. The commercial, industrial and institutional mechanical and electrical services provider benefited significantly from AI-driven demand for data centre construction. The company exceeded market expectations and its own guidance, growing revenue over 20% for the year. Strong backlog growth supports continued above-historical expansion, whilst elevated demand is driving record-high gross margins and profit growth. As of the fourth quarter, 72 hedge funds held Comfort Systems USA in their portfolios, up from 67 in the previous quarter. The company's shares gained 277.49% over the past 52 weeks, giving it a market capitalisation of $49.54 billion.

Yahoo Finance
Mar 20th, 2026
2 cash-producing stocks for long-term investors and 1 to avoid

Comfort Systems, a mechanical and electrical contracting services provider, has raised its free cash flow margin by 6.1 percentage points over five years to 11.4%. The company's backlog has grown 47.6% on average over the past two years, indicating strong demand exceeding supply. Lam Research, a semiconductor wafer fabrication equipment provider, posted a 30.2% trailing 12-month free cash flow margin. The company achieved 19.8% annual revenue growth over the past two years whilst improving capital efficiency. Meanwhile, Kimberly-Clark faces challenges despite its 10% free cash flow margin. The household products company has seen disappointing organic revenue growth and its free cash flow margin declined by five percentage points over the past year. Analysts expect just 2.1% sales growth next year.