Nelson's HVAC, LLC

Nelson's HVAC, LLC has served Vienna and the broader Northern Virginia region for over two decades, building a reputation on more than 650 client reviews that average 4.9 stars. Owner Nelson Revollo brings 21 years of field experience to every job, and the company maintains active licensing and insurance in both Virginia and Maryland. The contractor handles both residential and commercial heating and cooling systems, with service areas covering Northern Virginia and the Maryland suburban region. Their round-the-clock availability means a technician is always reachable for emergency calls, regardless of when system failures occur.

What distinguishes Nelson's HVAC from competitors is the owner's hands-on involvement in difficult repairs. Rather than delegating complex diagnostics entirely to field technicians, Nelson steps in personally when initial attempts fail to resolve issues. The company also offers a Preferred Service Policy, providing subscribers with scheduled maintenance visits, priority scheduling, and ongoing protection for their heating and cooling investment. This combination of senior expertise and maintenance accountability gives customers a level of accountability that's rare in the trade.

One Fairfax homeowner learned this firsthand when their heat pump failed at 1 AM during a winter weekend. After three visits from different technicians, including Neil who diagnosed a blown fuse and thermostat issue, and Walter who initially found nothing wrong, Nelson himself arrived on the fourth call. He discovered the outdoor heat pump unit was shorting out and failing to operate correctly, a problem his team had missed. Rather than claiming the job complete, Nelson honestly admitted he got the emergency heat working but couldn't guarantee permanent results. The system has continued functioning ever since. Reviewers consistently praise this willingness to see difficult jobs through and the transparency about what different system solutions will actually cost.