OHA HVAC, Plumbing, Chimney & Fireplaces

OHA HVAC, Plumbing, Chimney & Fireplaces has served Fairfax County homeowners since 2008, building a reputation across more than 1,900 five-star reviews that average 4.9 stars. The company holds Virginia state licensing in HVAC, plumbing, and fireplace installation, with a service area spanning Fairfax, Alexandria, and Falls Church. Their 24/7 emergency availability means residents can request same-day assistance during summer heat waves or winter cold snaps without waiting for business hours.

What distinguishes OHA from neighboring contractors is their multidisciplinary expertise under one roof. The company maintains factory certifications from Mitsubishi for variable-speed mini-split systems and services all major fireplace brands including Jotul, Heatilator, and Travis Industries. Technicians perform in-house diagnostics on gas valves, thermocouples, and ignition systems rather than subcontracting fireplace work, a capability that proves essential when older units require obsolete parts.

Customer reviews repeatedly highlight specific technicians who solved problems other contractors could not. Matt spent hours sourcing components for a 15-year-old natural gas fireplace other companies refused to touch, ultimately restoring full operation. Bryan arrived same-day during a holiday weekend to repair two malfunctioning gas fireplaces. Ashton and his installation team replaced an aging HVAC system, completing the work with thorough cleanup that left the homeowner describing the result as "perfectly" cooling.