Landmark Mechanical | Experienced HVAC Services in San Diego, CA
8015 Balboa Ave, San Diego, CA 92111
Question Answers
My AC is running but my San Diego home isn't cooling well. Could this be an air handler or duct problem?
Absolutely. This is a common issue in our area. A failing air handler fan won't circulate enough cool air, while leaky ducts—common in attics and crawl spaces—can lose cooled air before it reaches your rooms. We'll perform a thorough diagnostic to pinpoint if it's a fan motor issue, excessive duct leakage, or both, and provide a clear repair plan to restore your comfort efficiently.
What does duct sealing involve, and how can it help my San Diego HVAC system?
Duct sealing is a critical service for many local homes. We use specialized tools to locate leaks in your ductwork, often in unconditioned spaces like attics. Then, we apply professional-grade sealants to close those gaps. This prevents cooled or heated air from escaping, which improves airflow to every room, reduces your energy bills, and lessens the strain on your system—helping it last longer in our demanding climate.
Why is my air handler fan making a strange noise, and is it an urgent repair?
Grinding, squealing, or rattling noises from your air handler often indicate a worn motor, loose components, or debris obstruction. In San Diego, where systems run frequently, this is a sign of impending failure. We recommend addressing it promptly. A failing fan can stop working completely, leading to no cooling, or it can overheat and cause further damage. Our technicians can quickly diagnose the issue and perform a reliable repair to avoid a complete breakdown.
Meet the Team
Landmark Mechanical is a trusted, local HVAC contractor serving San Diego County. We specialize in diagnosing and resolving the specific heating and cooling challenges faced by homeowners in our region, such as air handler fan failures and inefficient ductwork. Our expert technicians understand how San Diego's climate and older home construction can lead to airflow issues and system strain. We provide precise repairs and comprehensive solutions, from fan motor replacements to professional duct sealing, ensuring your system operates efficiently and your home stays comfortable year-round. As a community-focused business, we're committed to reliable service and clear communication for every client.
What the Company Handles
- HVAC installation or replacement
- HVAC system repair
Business Location & Hours
| Mon: | Open 24 hours |
| Tue: | Open 24 hours |
| Wed: | Open 24 hours |
| Thu: | Open 24 hours |
| Fri: | Open 24 hours |
| Sat: | Open 24 hours |
| Sun: | Open 24 hours |



