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Alexandria, VA HVAC & Plumbing Services
Delivering the Best HVAC & Plumbing Repair Services in Alexandria, Virginia. 24/7 Emergency HVAC & Plumbing Services Available.
Air Conditioning
Heating
Air Quality
Plumbing
C.D. Shanahan's offers quality residential and commercial HVAC and Plumbing Services in Alexandria, VA. No matter your HVAC and Plumbing needs, our team of experts is here to help. From repairs and maintenance to installations, we've got you covered! Ask us about our HVAC and Plumbing maintenance plans to learn how they can help save you money and give you peace of mind. 
 
24/7 Emergency Plumbing and HVAC Services and Financing are Available!
 
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A Trusted HVAC & Plumbing Company in Alexandria, VA
At C.D. Shanahan's, we believe we are the best HVAC and plumbing company serving Alexandria, VA. With our unwavering commitment to excellence, we have earned hundreds of 5-star reviews from satisfied customers in Alexandria and the rest of the DMV area. Don't just take our word for it—check out our awards and the reviews from our delighted customers and see why they trust us for their HVAC and plumbing needs.
 
Experience the quality and satisfaction that our customers rave about—choose C.D. Shanahan's for all your HVAC and plumbing requirements in Alexandria, VA.
The crew was professional, punctual, and courteous. They replace my old HVAC system in no time at all. I highly recommend them!
Naira R.Naira R.Alexandria, VA  Customer (Yelp | 5/18/23)
Evan is the most reliable, honest, and thorough plumber we have had in years. His fee was very reasonable and he was very thorough with his diagnosis of our problem. We even signed up for their annual contract.
Rick B.Rick B.Alexandria, VA  Customer (Yelp | 6/10/23)
These guys are the best!!! Brandon did a great job. R&B Electric told me I needed a new system that would cost $12,000. I called Shanahan's and Brandon cleaned the coil and replaced the motor and the system is working great. And a fraction of the price R&B quoted. I highly recommend Shanahan's.
Carla G.Carla G.Alexandria, VA  Customer (Yelp | 7/12/22
Air Conditioning Services
Keep the heat outdoors with our residential and commercial A/C services in Alexandria, VA. Our skilled technicians are equipped to address any A/C issues you might have and we can get your A/C unit working again in no time! Our A/C maintenance services will help you avoid major A/C breakdowns and save you money on energy costs and repairs.
 
If you need a new A/C unit installed or need to replace an old one, we're here to help! As authorized air conditioning unit suppliers, we have access to a wide range of cooling systems to meet your cooling needs. We'll work closely with you to select the perfect A/C unit for your home or business. We pride ourselves on the speed and quality of work giving you a system that will deliver reliable cooling for years.
 	 	 	 
 	 	 	 
Air Conditioning FAQs
How often should I have my AC unit serviced?We recommend scheduling professional AC maintenance at least once a year to ensure optimal performance and energy efficiency through the summer.
What are the signs that my AC unit needs to be repaired?Some signs that your AC unit might need repairs include insufficient cooling, weak airflow, unusual noises, unpleasant odors, and excessive energy bills. If you notice your AC unit isn't working how you'd like it to, get in touch with us to come check it out.
What is the average lifespan of an AC unit?The average lifespan of an AC unit typically ranges from 10 to 15 years, but proper maintenance and usage can make it last longer.
How much does it cost to install a new AC unit?The cost of installing a new AC unit will vary depending on the unit's size, efficiency rating, features, and the complexity of the installation. We offer free estimates for all installs so you know exactly what you're paying for before you move forward and we can help you explore all your options.
What should I do if my AC is not cooling effectively?If your AC isn't working there are a few things you can check before calling an HVAC pro. Some common problems that could cause your AC unit not to work include dirty air filters, a tripped breaker in your electrical panel, or your thermostat might just be switched off. 

You can easily check these on your own but, if you're stuck we do not recommend trying to troubleshoot any further. You could end up causing more issues unnecessarily. If you need help, get in touch with us to come diagnose your system and we'll get your AC working again in no time!
Heating Services
Don't let a broken heater turn your winter into a chilly nightmare. At C.D. Shanahan's, we're here to keep our valued customers comfortably warm during the cold Northern, VA fall and winter seasons. Our dedicated team of HVAC experts provides reliable and prompt heating repair, maintenance, and installation services for both residential and commercial properties in Alexandria, VA.
 
When it comes to your comfort, we've got you covered. Whether it's a quick fix or a brand-new heater installation, we're ready to tackle the job with expertise and efficiency. As authorized heating unit suppliers, we take pride in offering a wide selection of top-quality heating units. We'll guide you in finding the perfect heating solution that perfectly matches your home or business needs.
 	 	 	 
 	 	 	 
Heating FAQs
When should I schedule heating system maintenance?In Alexandria, we recommend scheduling heating system maintenance at least once a year in the fall before the cold starts to set in. This way you can identify and address any potential issues before they become major problems in the winter.
What are the signs that my heating system needs repair?There are a few ways that you can tell that your heater needs to be repaired. Common signs include poor heating, uneven temperatures around your home, strange or loud noises, your system turning on and off a lot, or unusually high energy bills. 

If you notice any of these issues, get in touch with us to diagnose your system for repairs.
What is the average lifespan of a heating system?Generally, a well-maintained heating unit will last between 10 to 20 years on average. The lifespan of a heating unit will depend on the type of system you have, its maintenance history, and how it's used. The harder your unit has to work over time the shorter the lifespan will be which is why maintenance is so important.

If you want to know how much longer your heater will last get in touch with us! We will assess the condition of your unit and let you know when it might need to be replaced. We'll also leave you with some helpful information about how to get the most out of your system while it lasts.
How much does it cost to install a new heating system?On average, a heating unit installation can cost you $2,000 to $10,000. In some cases, it may be more. Factors that influence the installation cost include the type of unit you want, the unit's size, and the overall complexity of the project. For example, electric and gas furnaces are generally cheaper to have installed than heat pumps. When choosing a new heating system you should make sure the one you choose adequately meets your needs and is within your budget.

Get in touch with us for a free installation estimate. We'll help you choose the perfect heating unit that meets your heating needs, without breaking the bank.
What should I do if my heat isn't working?If your heat stops working, a few immediate next steps you can take include checking the thermostat settings, ensuring the power supply is intact, and checking for any visible issues such as tripped breakers or blown fuses. If your still having issues, contact us for a thorough diagnosis and prompt repairs.
Indoor Air Quality Services
At C.D. Shanahan's, we genuinely care about the air you breathe in your home. Our services focus on ensuring clean and healthy air for you and your family. We offer whole-home humidifier and air purifier installation and maintenance, dedicated to making your home's air fresh and safe.
 
With our whole-home air purifiers, we filter out dust, pet dander, allergens, and unpleasant odors, leaving you with fresher and healthier air. Additionally, our whole-home humidifiers add the right amount of moisture to the air, making your home more comfortable to live in.
 
Trust our team to make the air in your home cleaner and better for everyone. We're here to provide you with the utmost care and expertise in improving your indoor air quality.
Watch these videos to learn how whole-home Air Purifiers and humidifiers work and the benefits they can provide for your home! 
Indoor Air Quality FAQs
What are common indoor air pollutants?Some of the most common indoor air pollutants are dust, pollen, pet dander, mold spores, cockroaches, and tobacco smoke.

To keep the air in your home clean, you'll want to keep it clean and well-ventilated, change your air filters regularly, control humidity levels, address any leaks or moisture issues quickly, and avoid smoking indoors. Having a whole-home air purifier and humidifier helps make keeping your air clean easy. 

(More Info: National Institute of Environmental Health Sciences)
What are the effects of poor indoor air quality?According to the EPA, some short and long-term effects on human health associated with indoor air pollution can include irritation of the eyes, nose, and throat, headaches, dizziness, fatigue, respiratory diseases, heart disease, and even cancer. 

Having a whole-home air purifier and humidifier installed can help make avoiding these health issues & protecting your loved ones easy.
How do I know if my indoor air quality is bad?To find out if your indoor air quality is bad, look for signs such as lingering musty or unpleasant odors, excessive dust buildup, visible mold growth, frequent allergy or asthma symptoms, and feelings of stuffiness or discomfort. If you think the air quality in your home is bad, get in touch with us to conduct air quality testing so we can walk you through steps you can take to get cleaner indoor air.
What are the benefits of installing an air purifier in my home?Installing a whole-home air purifier offers several benefits for your home. Air purifiers remove airborne pollutants, allergens, and irritants, helping to improve your indoor air quality. Improving your indoor air quality can help reduce allergy and asthma symptoms, minimize odors, and create a cleaner and healthier living environment for you and your family. With indoor air purifiers you get more control over the air you and your loved ones breathe in your home.
What are the benefits of installing a humidifier in my home?The purpose of a whole-home humidifier is to help maintain optimal humidity levels and fight against dry air during the arid winters in Alexandria. Other benefits of a whole-home humidifier include alleviating dry skin, reducing respiratory irritation, preventing damage to wood furniture and flooring, and creating a more comfortable indoor atmosphere. A humidifier can enhance your overall well-being and give you more control over of your comfort.
Annual HVAC Maintenance
Keep your HVAC system running smoothly, avoid costly breakdowns, and save on energy bills with our annual HVAC maintenance services in Alexandria, VA. To ensure optimal heating and cooling performance, we recommend scheduling maintenance in early fall for your heater and early spring for your A/C unit.
 
Our experienced technicians will conduct comprehensive inspections of your heating and cooling systems to identify any potential issues so you can tackle them before they become a problem.
 
If you sign up for our HVAC maintenance plan, you get two discounted HVAC inspections per year and you can rest assured that your HVAC units will operate efficiently helping you maintain a comfortable indoor environment throughout the year.
 	 	 	 
 	 	 	 
Our comprehensive HVAC inspections include:
  • Air filter inspection
  • Outdoor & indoor coil inspection
  • Gas leak testing
  • Safety controls inspection
  • Wiring and electrical connection inspection
  • Motor and fan inspection
  • Inspection for proper lubrucation
  • Airflow checks
  • Thermostat calibration
  • Overall unit health evaluation
  • Much More!
HVAC Maintenance FAQs
How often should I schedule HVAC maintenance?In Alexandria, we recommend scheduling HVAC maintenance twice a year. Once in the spring, around March, to get your AC ready for summer. Once in the fall, around September, to get your heating system ready for the Winter. 

Our HVAC maintenance plan helps make taking care of your HVAC systems easy and affordable with two guaranteed HVAC inspections at a discounted price.
How does HVAC maintenance help improve energy efficiency?Regular HVAC maintenance helps improve energy efficiency by addressing any strains on your HVAC systems ensuring that your system is operating at peak performance. During maintenance, our technicians will do a comprehensive inspection and clean system components, including filters, coils, and motors. We'll remove dirt, debris, and buildup, to clear any clogs in your system. We'll also check your refrigerant levels, optimize your airflow, check for dangerous carbon monoxide leaks, and calibrate system controls. 

Doing all of these things helps minimize energy waste and lower your energy bills.
Will HVAC maintenance extend the lifespan of my system?Yes, regular HVAC maintenance can help extend the lifespan of your heating and cooling units. Keeping your HVAC units stress-free over their lifespans keeps them running efficiently and from having major breakdowns which will contribute to a shorter lifespan.
How can I tell if my heating system needs maintenance?If you notice any of these signs we recommend getting your heater serviced:

Inconsistent heating around your home - Unusual noises or smells - High energy bills - Poor indoor air quality - Yellow pilot light - Temperature is slow to heat up - It's been a year or more since your last service
How can I tell if my AC unit needs maintenance?Similar to heating systems, there are signs that can help you tell if your AC system may need maintenance, including:

Your AC is blowing warm air - Uneven or poor cooling around your home - Weak airflow - Frequent cycling (turning off an on) - Strange odors or sounds - Water leaks - High humidity
My system is running fine, why do I still need maintenance?Even if your system seems to be running okay, we still recommend regular HVAC maintenance. Maintenance helps prevent potential problems before they get too bad, helping you avoid unexpected breakdowns and costly repairs. It also helps your system work at its best, maximizing energy efficiency, saving you money on your energy bills, and extending the lifespan of your system. 

By scheduling regular maintenance or signing up for an HVAC maintenance plan with us, you'll have peace of mind knowing that your system is well-maintained and operating optimally.
Smart Thermostat Installations
Take control of your home or office's temperature with smart thermostats. These advanced devices allow you to remotely adjust the temperature and improve energy efficiency, potentially reducing your costs. Smart thermostats can even increase the value of your home by providing modern technology and energy-efficient features that appeal to potential buyers. With personalized scheduling and remote control via your smartphone or smart devices, you can easily manage your HVAC system from anywhere.
 
Our expert technicians at C.D. Shanahan's specialize in smart thermostat installations in Alexandria, VA. We'll help you select the best smart thermostat for your home and office needs, ensuring precise installation and enhanced comfort. Experience the convenience and energy-saving benefits of a smart thermostat with our smart thermostat installation services today!
 	 	 	 
 	 	 	 
We Install Smart Thermostats from all the most popular brands and more! 
  • Ecobee
  • Nest
  • Emerson
  • Bosch
  • Google Home
Plumbing Services
Plumbing issues in your home can lead to devastating leaks, unpleasant sewage odors, high water bills, and other major problems if left unchecked. We offer professional commercial and residential plumbing repair, maintenance, and installation services in Alexandria to help you fix and avoid plumbing issues large and small.
 
Our team of licensed plumbing technicians is equipped with the expertise to handle all your plumbing needs. If you're facing a serious plumbing problem, we offer 24/7 emergency plumbing repair services in Alexandria, VA, and are just a call or text away. You can rely on us for prompt emergency service.
 	 
 	 
  • Tankless Water Heater Repair, Maintenance, and Installation
  • Storage Tank Water Heater Repair, Maintenance, and Installation
  • Water Line Repair & Replacement
  • Gas Line Repair & Installation
  • Submeter Installation & Maintenance
  • Water Main and Sewer Repairs
  • Bathroom and Kitchen Remodeling Plumbing
 	 
 	 
  • Faucet Repair & Installation
  • Drain Cleaning and Unclogging
  • Toilet Repair & Installation
  • Water Heater Repair, Maintenance, and Installation
  • Sump Pump Repair, Maintenance, and Installation
  • Garbage Disposal Repair & Replacement
  • Bathtub Installation
Plumbing FAQs
How quickly can you respond to plumbing emergencies?We understand the urgency and stress that comes with plumbing emergencies. That's why we are available 24/7 for emergency plumbing repairs so we can offer our customers in Alexandria same-day service to fix your plumbing issues quickly.
Do you offer free estimates for plumbing repairs and installations?Yes, we provide free estimates for all of our plumbing services. Our team will come to your home to assess your plumbing issues or needs and give you with a transparent and accurate quote. We'll explain exactly what we'll be doing and why we're doing it and will be happy to answer any questions you have. No hidden fees, no surprises.
How much do plumbing repairs usually cost?The cost of plumbing repairs will vary depending on how bad the issue is and the cost of materials needed to make repairs. 

We understand paying for unexpected repairs can be difficult so we offer some of the most affordable plumbing services in Alexandria, VA, and financing to help you get your home back in good shape.
Do you offer warranties for your plumbing services?Yes, we guarantee satsfaction for all of our servics. If you're not satisfied with our work we'll work with you to make it right! We are properly licensed and insured to give our customers peace of mind when they choose us for their plumbing services and we proudly stand behind the quality of our work.
What are the benefits of preventative plumbing maintenance?Preventative plumbing maintenance helps you avoid unexpected costly repairs by finding and fixing small plumbing issues before they become big problems. It will help improve the longevity of your plumbing system, enhance energy efficiency, and save you time and money in the long run.

We also offer plumbing maintenance plans to help make taking care of your plumbing system easy.
Schedule Your Service
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