Heating & Air Conditioning

No other single system in your home plays a larger role in your comfort or how much your utility bill will be than your heating and air conditioning system. From system repairs to new, high-efficiency HVAC system installation, our goal is to keep you and your family comfortable all year long.

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Service & Maintenance

You never have to worry about your heating and air conditioning system failing with Shanahan's Heating & Cooling on your side. Our skilled technicians will handle your service needs for all makes and models, including licensed warranty and post-warranty repairs, and emergency response.

Seasonal Tune-Ups

Summer is here and we are feeling the heat! Do not wait to schedule your AC service in Fairfax, Reston, Alexandria, Arlington, or the surrounding area. Routine maintenance can help extend the life of your system and prevent unexpected breakdowns.

Upfront Pricing

We are happy to offer flat rate pricing; charging by the job, not by the hour. The price we quote before we start the work will be the price you pay.


We have partnered with the industry's leading manufacturers to bring you top quality heating and air conditioning equipment. We will work with you to select the best system for your home. You’ll use less energy, cut down on utility costs, and live in comfort! We specialize in:

  • Air Conditioners
  • Heat Pumps
  • Boilers
  • Thermostats
  • Furnaces
  • Ductless Systems
  • Oil to Gas Conversions

Trane Mitsubishi Electric National Comfort Products Heil

Very happy with crew, service & pricing. —Tom M.