24/7 Emergency HVAC Repair & Generator Services in Sterling, VA
Carrier® Factory Authorized Dealer Serving Loudoun & Fairfax Counties Since 1978
When your air conditioner quits on a humid July afternoon or your furnace cuts out in the dead of winter, you don’t need a national call center—you need a local contractor who shows up fast. At Johnson’s Polar Air Inc., we’ve kept Northern Virginia homes comfortable for over 45 years with honest advice, upfront flat-rate pricing, and NATE-certified technicians.
Whether you need same-day AC repair, a high-efficiency Carrier® heat pump replacement, duct sealing, or a whole-home standby generator to keep your lights on during severe storms, our team delivers quality workmanship backed by local pride.
Top-Rated Local HVAC & Generator Experts
Top-Rated Local HVAC Experts
Carrier Factory Authorized Dealer
Fully Licensed, Bonded, & Insured
NATE-Certified Technicians
Complete Heating, Cooling & Power Solutions for Northern VA
Need Emergency Service? We offer 24/7 emergency repair response across Sterling, Herndon, Reston, and Leesburg. Call (703) 430-3300 for immediate dispatch!
Air Conditioning Repair & Service
Rapid diagnostic, refrigerant leak detection, capacitor replacement, & seasonal tune-ups | Restores cold air fast, improves energy efficiency, and stops costly summer breakdowns.
AC & Heat Pump Installation
High-efficiency Carrier® system sizing, heat pump upgrades, & ductless mini-splits | Cuts monthly electric bills by up to 30% with multi-stage cooling and heating.
Furnace & Heating Repair
Emergency gas furnace troubleshooting, heat pump reversing valves, & ignition repair | Ensures safe, reliable winter heat with thorough carbon monoxide safety checks.
Indoor Air Quality & Ductwork
Air duct sealing, mold/pollutant filtration, whole-house humidifiers, & UV purifiers | Eliminates dust, allergens, and musty odors while balancing hot/cold room temperatures.
Whole-Home Standby Generators
Automatic transfer switch installation, Generac/Carrier generator sizing, & maintenance | Uninterrupted home power during winter ice storms and severe summer thunderstorms.
Serving Northern Virginia
Business Address
1333 Shepard Drive
Sterling, VA 20164
Business Hours
Monday – Friday
7:30am to 4:00pm
We Service All Brands
Member
Special Mentions
- CheckBook Magazine’s Top Rated
- High Rating on Angie’s List
Payment Methods
Experiencing Home Comfort Problems? We Have the Fix.
Your heating and cooling systems usually give warning signs before a complete breakdown. If you notice any of these common issues, our Shepard Drive technicians can diagnose and repair the issue today:
Air Conditioner Blowing Warm Air: Typically caused by a failed start capacitor, dirty outdoor condenser coils, or a refrigerant leak.
Hot Upstairs / Freezing Downstairs: Indicates static pressure imbalance, restricted air ducts, or an improperly sized blower fan.
Sudden Spike in Utility Bills: Unmaintained heat pumps and furnaces work twice as hard to maintain set temperatures, wasting energy.
Unusual Banging, Squealing, or Musty Smells: Mechanical wear or mold growth inside your dark ductwork requires immediate NATE-certified inspection.
Frequent Circuit Breaker Tripping: Signals an electrical overload in your compressor or air handler that poses a home fire hazard.
Proudly Serving Sterling, VA and Surrounding Communities Since 1978
Headquartered at 1333 Shepard Drive in Sterling, Johnson’s Polar Air Inc. is a family-owned local business with deep roots in Northern Virginia. Over the past four decades, our blue service trucks have served thousands of homeowners across:
Loudoun County: Sterling, Cascades, Countryside, Potomac Falls, Ashburn, and Leesburg.
Fairfax County: Herndon, Reston, Great Falls, Vienna, and Chantilly.
We aren’t a private-equity chain focused on quotas—we are your neighbors. We treat your home with the care and respect it deserves.
Protect Your System with a Polar Comfort Agreement
Prevent unexpected breakdowns and lower your energy costs with our annual HVAC maintenance agreements. Includes two comprehensive seasonal tune-ups, priority emergency scheduling, and discounts on repairs!
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