Summer 2026
Corporate Intern
Posted on 5/16/2026
Comfort Systems USA
1,001-5,000 employees
National HVAC design, installation, service.
No salary listed
Houston, TX, USA
In Person
 Business & Strategy (2) |
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- Ability to work in a fast-paced environment which requires ability to prioritize tasks and multi-task
- Possess excellent communication skills, both written and spoken with the ability to work well with others
- Proficient in Microsoft Office with emphasis in Excel
- Demonstrate teamwork by cooperating with department members, sharing information, utilizing innovations of others, participating in group decision process, and accepting additional assignments as appropriate
- Must be highly self-sufficient and able to make self-directed decisions as well as support other team members in the department
- Rotates through divisions of responsibility and provides ideas to grow and improve the business.
- Accepts designated, business-focus projects to research, propose ideas and solutions, and present final project during the internship.
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's Take
What believers are saying
- Hyperscaler demand from Amazon, Alphabet, and Microsoft continues to fill large projects.
- Q1 2026 operating cash flow turned positive at $388.8 million, supporting reinvestment.
- The recent West-region electrical acquisition adds roughly $250 million annualized revenue.
What critics are saying
- Technology projects drove 56% of Q1 revenue; hyperscaler capex cuts would hit results quickly.
- Management cited labor availability as the primary scaling constraint, limiting backlog conversion.
- $43 million of Q1 closeout benefits were one-time, and margins normalize without them.
What makes Comfort Systems USA unique
- Comfort Systems USA dominates HVAC and electrical contracting for hyperscale AI data centers.
- Q1 2026 revenue reached $2.87 billion, up 56.5%, with backlog at $12.45 billion.
- The company expanded modular construction capacity to 4 million square feet through acquisitions.
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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
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.
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.
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.
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.
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.