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47 Years
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Emergency
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Your Trusted HVAC Partner in Northern Virginia
Since 1979, Brennan's Heating & Air Conditioning Heating & Air Conditioning has been Northern Virginia's trusted HVAC contractor, delivering award-winning service and cutting-edge heating and cooling solutions. As a family-owned business, we combine decades of hands-on experience with industry-leading certifications, including Carrier Factory Authorized Dealer status and NATE-certified technicians. Our team specializes in residential HVAC sales, installation, and maintenance, offering energy-efficient systems that reduce costs while enhancing comfort.

We guarantee 100% satisfaction through transparent pricing, 24/7 emergency service, and a commitment to protecting customers' investments. With 45+ years of local expertise, we serve Prince William County, Fairfax County, and surrounding areas, maintaining an A+ BBB rating and multiple Carrier Presidential Awards. Our technicians arrive in fully stocked vehicles, wear shoe covers to protect homes, and provide detailed diagnostics to ensure long-term system reliability.
Services
AC Repair Heating Installation HVAC Maintenance Duct Cleaning Indoor Air Quality Heat Pump Services Thermostat Installation Emergency HVAC Service System Replacement Preventive Maintenance
Details
  • Year established: 1979
Highlights and features
  • 45+ years of Northern Virginia HVAC expertise
  • 100% satisfaction guarantee on all services
  • Up-front pricing with no hidden fees
  • NATE-certified technicians for precise diagnostics
  • Carrier Presidential Award recipient for 8 years
Associations and certifications
  • Carrier Factory Authorized Dealer
  • NATE-certified
  • EPA Licensed
  • A+ Accredited with Better Business Bureau
What people say
Fantastic technicians No hidden charges Prompt service Energy-efficient solutions Professional installation
Services
AC Repair
Our NATE-certified technicians provide prompt AC repair services for all makes and models. Using advanced diagnostic tools, we identify and resolve issues like refrigerant leaks, electrical malfunctions, and compressor failures. Emergency repairs available 24/7 with guaranteed same-day service across Northern Virginia.
Heating Installation
We install high-efficiency heating systems including gas furnaces and hybrid heat pumps. Our technicians ensure proper sizing and SEER-compliant installation, with options for smart thermostats and zoning systems. All installations include extended warranties and energy-saving guarantees.
HVAC Maintenance
Our planned maintenance agreements include bi-annual inspections of electrical components, refrigerant levels, and airflow systems. Regular maintenance extends equipment lifespan, improves energy efficiency by up to 30%, and includes priority service for contract holders.
Indoor Air Quality
We offer comprehensive IAQ solutions including air purifiers, UV lamps, and duct cleaning services. Our technicians address allergens, mold, and chemical contaminants to improve respiratory health while maintaining HVAC system efficiency.
Emergency HVAC Service
Available 24 hours a day, our emergency service responds to critical HVAC failures with fully stocked vehicles. Technicians handle urgent repairs for heating systems in winter and AC units during summer heatwaves across all service areas.
Questions
What HVAC services do you offer in Northern Virginia?
We provide AC repair, heating installation, duct cleaning, indoor air quality solutions, and 24/7 emergency HVAC services across Northern Virginia.
Are your technicians certified?
All technicians are NATE-certified and EPA licensed with specialized training in Carrier systems and energy-efficient installations.
Do you offer financing options?
Yes, we offer competitive financing plans with no down payment required for qualified customers purchasing Carrier HVAC equipment.
What areas do you service?
We serve Woodbridge, Alexandria, Arlington, Manassas, Fairfax, Stafford, and surrounding Northern Virginia communities with same-day service guarantees.
What warranties do you provide?
We offer a 10-year parts and labor warranty on Carrier equipment with our Total Comfort Plan, plus manufacturer warranties registered at installation.
How can I schedule service?
Call (703) 783-0145 for immediate assistance or schedule online through our website for maintenance, repairs, or system replacements.
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