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Claim Your Free PageHorizon Heating & AC Repair has earned a perfect 5.0-star average across seven client reviews in Altadena, California. Operating around the clock every day of the week, this contractor handles both routine maintenance and urgent breakdowns for homeowners throughout the Pasadena Foothills area. Reviewers consistently describe the crews as professional, courteous, and punctual, with multiple clients noting that technicians arrived exactly when promised and returned the following day to finish work cleanly. The office staff and field technicians alike earn praise for their pleasant demeanor, making what could be a stressful home repair feel manageable.
What distinguishes Horizon Heating & AC Repair from competitors is the level of detail visible in their installations. One reviewer had a complete duct system installed with fiberglass plenums featuring vapor barriers and a UV light mounted inside the AC unit to inhibit mold, mildew, and bacterial growth. That job included a five-year warranty on the ductwork itself. Another client specifically appreciated that crews covered floors before entering and thoroughly cleaned the workspace after completing repairs. These methodical practices suggest a contractor that values precision and long-term customer satisfaction over quick turnover.
Several reviewers highlight specific technicians who went above and beyond. One client described a technician named Teeradet arriving in the morning, addressing air conditioning maintenance issues promptly, and handling the work in a professional and courteous manner. Another homeowner recalled a same-day diagnosis during what appears to have been urgent circumstances, with the technician explaining the problem clearly before proceeding. Multiple reviewers mention recommending Horizon Heating & AC Repair to family and friends, a signal that the work holds up well after the crew leaves.
All seven reviewers award 5 stars, with each review praising professionalism and punctuality. Customers consistently mention same-day diagnosis, clean workspaces, and clear communication about scope and timeline. Three reviews specifically call out technicians by name or behavior for their courteous manner and efficient problem-solving.
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Full ductwork installation with fiberglass plenums, vapor barriers, and airtight sealing to prevent moisture condensation, backed by a five-year warranty.
UV light installation inside AC units to inhibit mold, mildew, and bacterial growth within the HVAC system.
Round-the-clock availability for sudden breakdowns, with same-day diagnosis and repair to restore cooling quickly.
Technicians assess and identify AC issues accurately, explaining findings clearly before beginning any repair work.
Installation and service for home heating systems, handled with the same professional approach as cooling equipment.
Regular maintenance to keep HVAC systems running efficiently and catch potential problems before they cause breakdowns.
Service scope covers both single-family homes and larger residential properties, with careful attention to protecting the living space during work.