Marco & Son llc

Marco & Son AC and Heating has served Herndon and surrounding Northern Virginia communities for over 13 years, building a reputation as the contractor homeowners call when other companies cannot solve the problem. With 539 reviews averaging 4.9 stars, the company has completed thousands of service calls across Manassas and the greater Fairfax County area. The business operates from 13359 Parcher Avenue in Herndon and maintains flexible hours including Saturday morning appointments to accommodate working households.

What distinguishes Marco & Son from competitors is their diagnostic precision and resistance to upselling. Owner Marco uses an air duct calculator and takes exact measurements rather than eyeballing problems, identifying root causes that other contractors miss. Customer reviews repeatedly note that Marco declined recommending $37,000 heat pump replacements when existing systems still functioned properly, instead repairing ductwork and air return issues at a fraction of that cost. This commitment to honest assessments means customers pay for solutions they actually need rather than unnecessary equipment upgrades.

When Judith Ann Kreiger's Google Nest system proved unreliable, Marco replaced it with an Ecobee and simultaneously repaired a heating damper that was causing cold nights, completing both jobs in a single visit. Margaret Schwiesow consulted three companies before Marco correctly diagnosed her duct system and air return issues, a problem others failed to identify despite charging for extensive proposals. Javier, another technician at the company, repaired a system in two hours that another company had quoted as requiring multiple expensive interventions.