Landmark Air Systems, Inc.

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About Landmark Air Systems, Inc.
Landmark Air Systems, Inc. has operated as a family-owned HVAC contractor since 1975, rooted in Danbury, Connecticut. The company maintains an active license and serves residential clients across Fairfield County, Connecticut and Westchester County, New York. Currently, the business holds a 2.6-star average rating compiled from 12 customer reviews, presenting a notable credibility gap for prospective homeowners evaluating local contractors.
Landmark Air Systems positions itself as a YORK dealer, advertising installation, replacement, maintenance, and repair services for both heating and cooling systems. The company promotes quality workmanship, flexible scheduling, and a wide selection of parts and equipment. Website messaging emphasizes prompt project completion and transparent communication throughout service appointments, though the posted reviews do not consistently validate these commitments.
Customer feedback reveals recurring technical concerns. One reviewer documented ongoing ductwork deficiencies causing winter system shut downs, while another reported cooling and heating failures within two years of installation. A third client described moisture damage requiring wall access repairs after discovering compromised duct installation. These documented scenarios involve units that never achieved promised performance levels, with multiple reviewers noting unmet promises and communication breakdowns when follow-up support was requested.
What Customers Say
Across 12 customer reviews averaging 2.6 stars, seven clients assigned one-star ratings citing similar problems: system performance failures, improper installation, and unresponsive service calls. Reviewers describe units unable to maintain comfortable indoor temperatures and leak incidents occurring shortly after installation. No positive feedback was identified in the available review sample.
Working Hours
| SundayToday | Closed |
| Monday | 7:30 AM–5 PM |
| Tuesday | 7:30 AM–5 PM |
| Wednesday | 7:30 AM–5 PM |
| Thursday | 7:30 AM–5 PM |
| Friday | 7:30 AM–5 PM |
| Saturday | Closed |
Services
Air Conditioning Installation
New residential AC system installation using YORK equipment and components.
Air Conditioning Replacement
Removing old cooling systems and installing replacement units.
Heating System Installation
Full heating system installation including boiler setups for residential properties.
Heating System Replacement
Existing heating equipment replacement with new systems.
Boiler Installation
Specialized boiler installation services for home heating.
Commercial HVAC
HVAC services for commercial buildings and business properties.
System Maintenance
Preventive maintenance services to maintain HVAC system performance.
HVAC Repairs
Diagnostic and repair services for heating and cooling systems.