Summer Accounting Intern

Summer Accounting Intern

Duration:
May 2026 - August 2026

Schedule:
Part-Time or Full-Time Summer Internship

Crystal Heating & Cooling Service, Inc. is seeking a motivated and detail‑oriented Summer Accounting Intern to support our Accounting Department during our busy summer season. This internship offers hands‑on experience in accounting operations, payroll support, accounts payable/receivable, job costing, and construction accounting within a fast‑paced HVAC environment.

This is an excellent opportunity for a student pursuing a degree in Accounting, Finance, or Business Administration who wants meaningful real‑world accounting experience beyond basic administrative tasks.

• Assist with Accounts Payable processing, invoice entry, and vendor file maintenance.
• Support Accounts Receivable activities, including customer payment application and collections follow‑up.
• Help reconcile credit card statements, bank transactions, and general ledger accounts.
• Assist with payroll preparation, reporting, and audit support.
• Support construction and union‑related accounting functions, including equality funds processing, union reporting, prevailing wage documentation, and compliance tracking.
• Support month‑end close processes and preparation of journal entries.
• Organize and maintain accounting and employee documentation.
• Assist with job costing and financial data entry in Service Titan and Quick Books.
• Prepare spreadsheets, reports, and financial analysis using Microsoft Excel.
• Support internal process improvement and special accounting projects.
• Assist with filing, scanning, and maintaining accurate accounting records.
• Maintain confidentiality of sensitive financial and employee information.

• Currently pursuing an Associate’s or Bachelor’s degree in Accounting, Finance, or Business Administration.
• Basic understanding of accounting principles and financial statements.
• Strong attention to detail and organizational skills.
• Proficient in Microsoft Excel and Microsoft Office Suite.
• Ability to prioritize tasks and work independently in a deadline‑driven environment.
• Strong communication and professionalism.
• Willingness to learn and take initiative.

• Prior office, bookkeeping, or internship experience preferred but not required.
• Experience with Quick Books, Service Titan, or ERP/accounting systems is a plus.
• Interest in construction, HVAC, or operational accounting environments.

• Hands‑on accounting and finance experience in a growing company.
• Exposure to real‑world month‑end close and financial reporting processes.
• Experience with job costing and operational accounting.
• Exposure to union, prevailing wage, and construction compliance accounting processes is rarely offered in traditional internships.
• Mentorship from experienced accounting leadership.
• Opportunity to build professional skills in communication, organization, and problem‑solving.

• Paid internship ($18‑$22/hour based on experience).
• Flexible scheduling available.

Crystal Heating &Cooling Service, Inc. is a 100% employee‑owned (ESOP) HVAC company serving residential and commercial customers throughout Missouri. We are committed to teamwork, integrity, growth, and delivering exceptional service to our customers and employees alike.