Thos. Somerville Co.

Thos. Somerville Co. A regional industry leader, distributing a wide range of plumbing, heating, and air conditioning supplies and solutions throughout the Mid-Atlantic US.

Founded in 1861 in Washington D.C., originally a brass and foundry known as National Brass Works. From that foundation we have evolved into our current state operating out of 21 trade locations, 9 retail stores, and a Central Distribution Center. A family owned business from the start, Thos. Somerville Co. continues to run a customer centric
business. We know that excellent service is the key to o

Founded in 1861 in Washington D.C., originally a brass and foundry known as National Brass Works. From that foundation we have evolved into our current state operating out of 21 trade locations, 9 retail stores, and a Central Distribution Center. A family owned business from the start, Thos. Somerville Co. continues to run a customer centric
business. We know that excellent service is the key to o

Operating as usual

Save the dates for our Heating and Hydronics Open House Events! Visit our vendors booths, learn about their products, an...
10/05/2021

Save the dates for our Heating and Hydronics Open House Events! Visit our vendors booths, learn about their products, and enter to WIN a 50” LG SMART TV! Food will be provided rom 11am – 1pm. Don’t miss these events!!! Chantilly VA on 10/26; Chambersburg PA on 10/27; Lancaster PA on 10/28! We would love to see you there!

Save the dates for our Heating and Hydronics Open House Events! Visit our vendors booths, learn about their products, and enter to WIN a 50” LG SMART TV! Food will be provided rom 11am – 1pm. Don’t miss these events!!! Chantilly VA on 10/26; Chambersburg PA on 10/27; Lancaster PA on 10/28! We would love to see you there!

Check out yesterday's Rinnai Contractor Event at Attaboy Brewery with our Frederick Branch representing! Want to find ou...
09/10/2021

Check out yesterday's Rinnai Contractor Event at Attaboy Brewery with our Frederick Branch representing! Want to find out about future events and Promotions? Contact a Somerville Branch today. For a location near you, visit us at TSCOnline.com/locations

Check out yesterday's Rinnai Contractor Event at Attaboy Brewery with our Frederick Branch representing! Want to find out about future events and Promotions? Contact a Somerville Branch today. For a location near you, visit us at TSCOnline.com/locations

***ATV GIVEAWAY***  WE want your Resideo Water Product Business!!!Enter to win a Tracker 570 ATV, this promotion is runn...
09/07/2021

***ATV GIVEAWAY*** WE want your Resideo Water Product Business!!!
Enter to win a Tracker 570 ATV, this promotion is running now, and will end on December 31st, 2021. Don’t miss out!
**For entry rules and listing of qualifying products, please see below flyers! Any Questions? Call a Somerville Branch, and for a location near you, visit us at TSCOnline.com/locations

The Viega Counter Day at our Ocean City MD Branch was a total success. We took a few pictures before the crowd showed up...
08/27/2021

The Viega Counter Day at our Ocean City MD Branch was a total success. We took a few pictures before the crowd showed up, so you can see inside the All New Viega Truck. Thos. Somerville carries all popular brands, and we work hand in hand with our vendors to provide the newest products. Don’t miss our next event. For a Somerville Branch near you, visit us at TSCOnline.com/locations

Check out our Ocean City MD Branch on Tuesday, August 24th! Viega is on the ROAD with a brand new Truck! Learn about Vie...
08/17/2021

Check out our Ocean City MD Branch on Tuesday, August 24th! Viega is on the ROAD with a brand new Truck! Learn about Viega's products, and don't forget to register for the quarterly tool and jaw set giveaway. For more info, please see flyer. And for a Somerville Location near you, visit us at TSCOnline.com/locations

Check out our Ocean City MD Branch on Tuesday, August 24th! Viega is on the ROAD with a brand new Truck! Learn about Viega's products, and don't forget to register for the quarterly tool and jaw set giveaway. For more info, please see flyer. And for a Somerville Location near you, visit us at TSCOnline.com/locations

Your Somerville Team wishes you an awesome weekend!
08/13/2021

Your Somerville Team wishes you an awesome weekend!

Your Somerville Team wishes you an awesome weekend!

Check out our Visa Gift Card Promo! For every $500 purchase of any Resideo Product, receive a $25 Visa Gift Card! This p...
08/10/2021

Check out our Visa Gift Card Promo! For every $500 purchase of any Resideo Product, receive a $25 Visa Gift Card! This promotion runs from August 1st - August 31st, 2021, and Visa Gift Card distribution while supply lasts. This promo is exclusively for the following Somerville Branches: Chantilly VA, Rockville MD, Annapolis MD, Chambersburg PA and Lancaster PA. Don't miss out and stop by!

Check out our Visa Gift Card Promo! For every $500 purchase of any Resideo Product, receive a $25 Visa Gift Card! This promotion runs from August 1st - August 31st, 2021, and Visa Gift Card distribution while supply lasts. This promo is exclusively for the following Somerville Branches: Chantilly VA, Rockville MD, Annapolis MD, Chambersburg PA and Lancaster PA. Don't miss out and stop by!

Our Chambersburg PA Branch worked with Chamberlin Reliable Heating and Cooling to donate leading LG Equipment to the loc...
06/24/2021

Our Chambersburg PA Branch worked with Chamberlin Reliable Heating and Cooling to donate leading LG Equipment to the local Franklin County Career & Technology Center! THANK YOU Chamberlin Reliable Heating and Cooling, for giving back to the community!!!

Are you ready for our first Customer Appreciation Event? It's tomorrow in Annapolis, come and check us out. Check out ne...
06/15/2021

Are you ready for our first Customer Appreciation Event? It's tomorrow in Annapolis, come and check us out. Check out new products, enjoy Mission BBQ, and take home some cool brand swag! Can't make it to Annapolis, next events are in Chantilly VA on 6/17, and Frederick MD on 6/18.

Are you ready for our first Customer Appreciation Event? It's tomorrow in Annapolis, come and check us out. Check out new products, enjoy Mission BBQ, and take home some cool brand swag! Can't make it to Annapolis, next events are in Chantilly VA on 6/17, and Frederick MD on 6/18.

Get ready, things are getting back to normal! Join us at our Customer Appreciation Event at the Annapolis Branch on June...
06/04/2021

Get ready, things are getting back to normal! Join us at our Customer Appreciation Event at the Annapolis Branch on June 16th, 2021. We have some cool Prizes and Giveaways, and...this event will be catered by no other than Mission Barbeque! Can't make it to Annapolis? No worries, we offer the same event in Chantilly VA on June 17th, and in Frederick MD on June 18th. To find a Somerville Branch near you, visit us at TSCOnline.com/locations

Get ready, things are getting back to normal! Join us at our Customer Appreciation Event at the Annapolis Branch on June 16th, 2021. We have some cool Prizes and Giveaways, and...this event will be catered by no other than Mission Barbeque! Can't make it to Annapolis? No worries, we offer the same event in Chantilly VA on June 17th, and in Frederick MD on June 18th. To find a Somerville Branch near you, visit us at TSCOnline.com/locations

If you didn’t make it to our HVAC Open House Events, we have more events planned in June. Stay tuned for more info! In t...
06/01/2021

If you didn’t make it to our HVAC Open House Events, we have more events planned in June. Stay tuned for more info!

In the meantime, check out the Frederick MD winner of a 50” LG TV. We raffled off THREE 50” LG TV’s, and Jerry Haynes from Frederick Heating and Air Conditioning was one of the lucky winners! Congratulations Jerry! And thanks for stopping by!

If you didn’t make it to our HVAC Open House Events, we have more events planned in June. Stay tuned for more info!

In the meantime, check out the Frederick MD winner of a 50” LG TV. We raffled off THREE 50” LG TV’s, and Jerry Haynes from Frederick Heating and Air Conditioning was one of the lucky winners! Congratulations Jerry! And thanks for stopping by!

Your Somerville Team wishes everyone a Safe Memorial Day Weekend!
05/28/2021

Your Somerville Team wishes everyone a Safe Memorial Day Weekend!

Your Somerville Team wishes everyone a Safe Memorial Day Weekend!

Check out our lucky winner, T.I. Dawson won the 50" LG TV at our HVAC Open House Event in Martinsburg, WV. We had two mo...
05/20/2021

Check out our lucky winner, T.I. Dawson won the 50" LG TV at our HVAC Open House Event in Martinsburg, WV. We had two more winners, one in Rockville MD, and one in Frederick MD. Three 50" LG TV's were raffle off. CONGRATS to the lucky winners!

Check out our lucky winner, T.I. Dawson won the 50" LG TV at our HVAC Open House Event in Martinsburg, WV. We had two more winners, one in Rockville MD, and one in Frederick MD. Three 50" LG TV's were raffle off. CONGRATS to the lucky winners!

Visit us today at our HVAC Open House Event in Rockville MD. You can win a 50" LG TV, and we have some cool Brand Swag f...
05/19/2021

Visit us today at our HVAC Open House Event in Rockville MD. You can win a 50" LG TV, and we have some cool Brand Swag for you to take home. If you miss todays event, the HVAC Open House Event will take place in Frederick MD tomorrow. Don't miss it!

Visit us today at our HVAC Open House Event in Rockville MD. You can win a 50" LG TV, and we have some cool Brand Swag for you to take home. If you miss todays event, the HVAC Open House Event will take place in Frederick MD tomorrow. Don't miss it!

Next week Tuesday is the day...Our HVAC Open House Event in Martinsburg, VW. Don't miss this event! We will raffle off a...
05/11/2021

Next week Tuesday is the day...Our HVAC Open House Event in Martinsburg, VW. Don't miss this event! We will raffle off a 50" LG TV, and we have some real Cool Brand Swag for you to take home. Stop by!

Next week Tuesday is the day...Our HVAC Open House Event in Martinsburg, VW. Don't miss this event! We will raffle off a 50" LG TV, and we have some real Cool Brand Swag for you to take home. Stop by!

Thos. Somerville is stocking your favorite, and the most popular items. >B< MaxiPro is an innovative press system, which...
05/03/2021

Thos. Somerville is stocking your favorite, and the most popular items.

>B< MaxiPro is an innovative press system, which is quick and simple to use, providing a secure and permanent joint. Compared with traditional techniques it significantly improves productivity through greatly reduced installation time and enhanced working flexibility. >B< MaxiPro is revolutionising pipe jointing in air-conditioning and refrigeration applications.

For a Somerville Location near you, visit us at TSCOnline.com/locations

Thos. Somerville is stocking your favorite, and the most popular items.

>B< MaxiPro is an innovative press system, which is quick and simple to use, providing a secure and permanent joint. Compared with traditional techniques it significantly improves productivity through greatly reduced installation time and enhanced working flexibility. >B< MaxiPro is revolutionising pipe jointing in air-conditioning and refrigeration applications.

For a Somerville Location near you, visit us at TSCOnline.com/locations

May 18th, 2021…Mark your calendar and join us at the HVAC Open House Event in Martinsburg VW. We will serve food, and we...
04/27/2021

May 18th, 2021…Mark your calendar and join us at the HVAC Open House Event in Martinsburg VW. We will serve food, and we have some cool Brand Swag for you to take home. The best part…you can win a 50” LG TV! If you can’t make it to this event, we will host another HVAC Open House in Rockville, MD on May 19th, and Frederick, MD on May 20th. Check us out at TSCOnline.com!

May 18th, 2021…Mark your calendar and join us at the HVAC Open House Event in Martinsburg VW. We will serve food, and we have some cool Brand Swag for you to take home. The best part…you can win a 50” LG TV! If you can’t make it to this event, we will host another HVAC Open House in Rockville, MD on May 19th, and Frederick, MD on May 20th. Check us out at TSCOnline.com!

Don't forget, we have a brand new Somerville Branch...in Odessa, DE. If you are in the area, stop by. We are stocking al...
04/16/2021

Don't forget, we have a brand new Somerville Branch...in Odessa, DE. If you are in the area, stop by. We are stocking all popular brands and more. If not in DE, to find a location near you, visit us at TSCOnline.com/locations

Don't forget, we have a brand new Somerville Branch...in Odessa, DE. If you are in the area, stop by. We are stocking all popular brands and more. If not in DE, to find a location near you, visit us at TSCOnline.com/locations

All Somerville Branches are now stocking Armstrong and Ducane. For more information, and to find a Somerville Branch nea...
04/09/2021

All Somerville Branches are now stocking Armstrong and Ducane. For more information, and to find a Somerville Branch near you, visit us at TSCOnline.com/locations

All Somerville Branches are now stocking Armstrong and Ducane. For more information, and to find a Somerville Branch near you, visit us at TSCOnline.com/locations

Armstrong Air...An HVAC system that delivers everything you want,just how you want it. Imagine what it would feel like t...
03/30/2021

Armstrong Air...An HVAC system that delivers everything you want,
just how you want it. Imagine what it would feel like to step through your front door and have your home feel just the way you want it to, every single day. That’s the power of the Pro Series™, and Thos. Somerville is now stocking Armstrong Air. Find out more by visiting or calling one of our Somerville Branches. For a location near you, visit us at TSCOnline.com/locations

Armstrong Air...An HVAC system that delivers everything you want,
just how you want it. Imagine what it would feel like to step through your front door and have your home feel just the way you want it to, every single day. That’s the power of the Pro Series™, and Thos. Somerville is now stocking Armstrong Air. Find out more by visiting or calling one of our Somerville Branches. For a location near you, visit us at TSCOnline.com/locations

Another great turnout at our Armstrong/Ducane Open House, this time in Lancaster PA. Visit one of our upcoming Open Hous...
03/19/2021

Another great turnout at our Armstrong/Ducane Open House, this time in Lancaster PA. Visit one of our upcoming Open Houses next week, and learn about Craftsmanship that meets the Expectations of HVAC Professionals. The next Open House is in Ocean City MD on Monday, 3/22/2021. For a Somerville Branch Location near you, visit us at TSCOnline.com/locations

We had great turnout at our Camp Hill PA location today at the Armstrong/Ducane Open House! Next Open House is tomorrow ...
03/17/2021

We had great turnout at our Camp Hill PA location today at the Armstrong/Ducane Open House! Next Open House is tomorrow in Lancaster PA. Then we will move the events to MD, Ocean City on March 22nd. Come see us and learn all about the new products that Thos. Somerville has now in stock! For a Somerville Location near you, visit us at TSCOnline.com/locations

Join us at our OPEN HOUSE EVENTS! We've added Armstrong and Ducane to our inventory! Want to hear all about the new prod...
03/15/2021

Join us at our OPEN HOUSE EVENTS! We've added Armstrong and Ducane to our inventory! Want to hear all about the new products? Stop by and let the experts tell you all about it. See below schedule, and to contact us, visit us at TSCOnline.com/locations

Chambersburg PA - March 16th, 2021
Harrisburg PA - March 17th, 2021
Lancaster PA - March 18th, 2021
Ocean City MD - March 22nd, 2021
Frederick MD - March 23rd, 2021
Martinsburg WV - March 24th, 2021
Chantilly VA - March 25th, 2021

Join us at our OPEN HOUSE EVENTS! We've added Armstrong and Ducane to our inventory! Want to hear all about the new products? Stop by and let the experts tell you all about it. See below schedule, and to contact us, visit us at TSCOnline.com/locations

Chambersburg PA - March 16th, 2021
Harrisburg PA - March 17th, 2021
Lancaster PA - March 18th, 2021
Ocean City MD - March 22nd, 2021
Frederick MD - March 23rd, 2021
Martinsburg WV - March 24th, 2021
Chantilly VA - March 25th, 2021

Check out our Annapolis Branch! Thank you Luke for volunteering your time to organize and dropping off the donations at ...
03/10/2021

Check out our Annapolis Branch! Thank you Luke for volunteering your time to organize and dropping off the donations at the College Parkway Baptist Church in Arnold MD “My Brother’s Pantry”. THANK YOU to our Customers and Somerville Team that donated and made this Food Drive a BIG SUCCESS!!!

Check out our Annapolis Branch! Thank you Luke for volunteering your time to organize and dropping off the donations at the College Parkway Baptist Church in Arnold MD “My Brother’s Pantry”. THANK YOU to our Customers and Somerville Team that donated and made this Food Drive a BIG SUCCESS!!!

The Owings Mills Branch did it!!! A whole trunk full of food was delivered to the Ascension Lutheran Church. THANK YOU f...
03/09/2021

The Owings Mills Branch did it!!! A whole trunk full of food was delivered to the Ascension Lutheran Church. THANK YOU for the generous donations from our Customers and Somerville Team! Thank you Linda Kates and Lynn Hepak for organizing this event and making it successful. You guys rock!

Did you know...Viega was the first to offer press joining systems in North America, the first to offer a proven method t...
03/04/2021

Did you know...Viega was the first to offer press joining systems in North America, the first to offer a proven method to verify secure connections and the first to offer the same time-saving press technology in multiple materials. Check out a Somerville Branch near you, we have all the popular brands in stock. Visit us at TSCOnline.com/locations

Did you know...Viega was the first to offer press joining systems in North America, the first to offer a proven method to verify secure connections and the first to offer the same time-saving press technology in multiple materials. Check out a Somerville Branch near you, we have all the popular brands in stock. Visit us at TSCOnline.com/locations

Our Martinsburg Branch rocks! Check out Brad and Shannon, they delivered 224 pounds of food to CCAP Loaves & Fishes of B...
03/02/2021

Our Martinsburg Branch rocks! Check out Brad and Shannon, they delivered 224 pounds of food to CCAP Loaves & Fishes of Berkeley County. THANK YOU Martinsburg for all the effort you put behind this to make it successful, and THANK YOU to all of our donors, you made this happen…Thank you for caring!

Our Martinsburg Branch rocks! Check out Brad and Shannon, they delivered 224 pounds of food to CCAP Loaves & Fishes of Berkeley County. THANK YOU Martinsburg for all the effort you put behind this to make it successful, and THANK YOU to all of our donors, you made this happen…Thank you for caring!

Check out our Washington D.C. Branch. The D.C. Somerville Team dropped off over 60 items yesterday at Martha’s Table in ...
02/26/2021

Check out our Washington D.C. Branch. The D.C. Somerville Team dropped off over 60 items yesterday at Martha’s Table in SE D.C. THANK YOU to our Customers for the donations, and THANK YOU Somerville Team for the donation and organizing the food drive. You made lots of people in need very happy. Thos. Somerville…doing our part, because that’s just who we are.

A HUGE SHOUT OUT to our Frederick MD Branch! You guys did it. Thank you Colin for organizing the food drive, spreading t...
02/15/2021

A HUGE SHOUT OUT to our Frederick MD Branch! You guys did it. Thank you Colin for organizing the food drive, spreading the word, and THANK YOU to our Customers and Somerville Team that donated, you are more than kind; we appreciate your generosity! All Donations went to the Frederick Rescue Mission. Check us out at TSCOnline.com

GREAT NEWS! The federal tax credit on residential energy efficiency products has been extended through December 31, 2021...
02/12/2021

GREAT NEWS! The federal tax credit on residential energy efficiency products has been extended through December 31, 2021. Qualifying products include Tankless Water Heaters and Boilers. Now may be the time to purchase a Rinnai Tankless Water Heater, and where to get it? At your local Somerville Branch of course!!! For more information about this tax credit, to see if you qualify, instructions, and on how to claim the tax credit, visit https://www.energystar.gov/.../non_business_energy...
For a Somerville Location near you, visit us at TSCOnline.com/locations

GREAT NEWS! The federal tax credit on residential energy efficiency products has been extended through December 31, 2021. Qualifying products include Tankless Water Heaters and Boilers. Now may be the time to purchase a Rinnai Tankless Water Heater, and where to get it? At your local Somerville Branch of course!!! For more information about this tax credit, to see if you qualify, instructions, and on how to claim the tax credit, visit https://www.energystar.gov/.../non_business_energy...
For a Somerville Location near you, visit us at TSCOnline.com/locations

Address

16155 Trade Zone Ave.
Upper Marlboro, MD
20774

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

(301) 390-9575

Products

Plumbing, heating, and air conditioning supplies

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Our Story

Founded in 1861 in Washington, D.C., Thos. Somerville Co. was originally a brass and foundry known as National Brass Works and we continue to pride ourselves on delivering the highest quality goods and service and the best overall value to our customers.

This philosophy has helped us grow into a regional industry leader, distributing a wide range of plumbing, heating, and air conditioning supplies and solutions throughout the Mid-Atlantic United States.

We have evolved into our current state operating out of 20 trade locations, 9 retail stores, and a Central Distribution Center. A family owned business from the start, Thos. Somerville Co. is a privately held company who continues to run a customer-centric business.

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