HVAC Installation | Maintenance | Alexandria, VA

Serving Fairfax County and the Surrounding Areas

For a job well done call A-1

A-1 Heating & Air Conditioning Service inc-logo phone-icon

Top-quality HVAC services to meet your needs

A-1 Heating & Air Conditioning is your go-to team for complete HVAC installation services. We fully guarantee our work and take care of every homeowner's space to ensure it's clean and neat when we finish. Best of all, our phones are answered 24/7 by a live operator so you can reach a person for help whenever you need us.


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  • High-quality repairs and helpful service agreements

  • Preventative maintenance options

  • 24-hour emergency services

  • Computerized service records

  • Flat-rate pricing

  • N.A.T.E certified company

  • Indoor air quality checks and duct cleaning services



Enjoy our convenient services

  • 45 years in business

  • Parts backed by a 10-year manufacturers' warranty

  • Class A VA license

  • Bonded and insured


Call 703-451-1100 whenever you need assistance and see what our professional team can do to resolve your heating and cooling issues!

Excellent reasons to choose us

Call now for senior and military discounts.


Ask about our large selection of products at competitive prices. Contact us today.