Heating & Cooling
Air-Tro
Monrovia, California
The company at a glance
Company overview
Air-Tro is a Monrovia heating and air-conditioning company with residential and commercial work across the San Gabriel Valley and greater Los Angeles. Its company history traces the business to John Helbing in 1969 and describes ownership by his sons, Bob and Tony. The firm says its Monrovia location houses offices, a warehouse, and a sheet-metal shop. Air-Tro’s company history.
Look beyond the replacement unit
Air-Tro lists heating and cooling installation, repairs, and ongoing maintenance. For someone comparing replacement proposals, the important discussion extends beyond the equipment model: ask how the contractor will assess the home, existing ducts, room-by-room comfort, and the controls that connect the system.
The company describes a dedicated service department and maintenance agreements as part of its operating history. If continued maintenance matters to your decision, ask what an agreement includes, which tasks carry additional charges, and how it affects service scheduling. A maintenance plan and an equipment warranty serve different purposes.
Questions for the first conversation
- What measurements will support the recommended system capacity?
- Does the proposal include duct inspection, airflow adjustments, and system commissioning?
- Who handles warranty registration, and which labor or maintenance costs remain the homeowner’s responsibility?
Home Review Board matched Air Tro Incorporated to California license 258228. The CSLB record was active on September 8, 2026 and included C-20 heating, ventilation, and air-conditioning, as well as several other classifications. CSLB license record.
Services & specialties
Services, history, and coverage: Air-Tro’s public website. License identity, status, and classifications: CSLB, checked September 8, 2026.
Areas served
Confirm availability for your exact address directly with the company.
Licensing & credentials
California license: 258228
Check the official sourceServices, history, and coverage: Air-Tro’s public website. License identity, status, and classifications: CSLB, checked September 8, 2026.
- CSLB C-20 Warm-Air Heating, Ventilating and Air-Conditioning
- CSLB also lists C-10, C-36, C-38, and B classifications
- Active license status checked September 8, 2026
Home Review Board does not license contractors. A credential listing does not establish current status or suitability for a particular job.
Reputation research
Look at recent feedback, recurring themes, and how the company responds to concerns. A rating alone cannot establish the quality of a future project.
Third-party ratings and reviews are not reproduced here. Availability and content are controlled by the original platforms.
What homeowners should ask
- Which completed projects are most similar to mine?
- Who will supervise the work and communicate updates?
- What is included in the proposal, and what is excluded?
- How will changes to the scope, price, and schedule be approved?
- Which licenses, insurance, permits, and warranties apply to this project?
Before you get in touch
How do I request an estimate?
Use the company’s website or public phone number, where provided above. Ask about current availability and whether an estimate or site visit carries a fee.
Has Home Review Board verified every detail?
No. Review the source notes and any fields specifically identified as checked. Company-provided information is attributed separately. Confirm time-sensitive information before hiring.
Sources & review notes
Fields checked: Matched Air Tro Incorporated to California license 258228; CSLB listed active status and C-10, C-36, C-38, B, and C-20 classifications. Checked the company website’s service descriptions, published customer phone, Monrovia location, coverage, and company history. Specific installations, trade-association claims, and customer reviews were not independently evaluated.
Source review date: 2026-09-08