Pro Listing

Herman W. Allen Plumbing, Heating & Cooling

Plumbers in Rockville, Virginia
Ranked #4 in Rockville | Grade B-
4.40 (251 reviews)

Herman W. Allen Plumbing, Heating & Cooling

Local plumbing team serving Rockville, Virginia with a focus on water heaters, leaks, fixtures, and gas line projects. Office staff coordinates scheduling and communication to keep projects moving smoothly.

Herman W. Allen Plumbing, Heating & Cooling business photo 1 - Plumbing in Rockville
Herman W. Allen Plumbing, Heating & Cooling business photo 2 - Plumbing in Rockville
Herman W. Allen Plumbing, Heating & Cooling business photo 3 - Plumbing in Rockville
Herman W. Allen Plumbing, Heating & Cooling business photo 4 - Plumbing in Rockville
Show all photos
Why Homeowners Choose This Business

Customers note careful workmanship, clear communication, and follow-through to confirm systems operate correctly before leaving. The team aims to troubleshoot issues methodically and provide practical solutions Local experience that helps homeowners across Rockville, Virginia compare a more region-aware provider.

Service Area

Rockville, Virginia and nearby parts of Hanover County and Greater Richmond, including Mechanicsville and surrounding neighborhoods.

Local Pro Business

This listing includes additional business details, homeowner trust signals, and stronger comparison information.

Pro
Additional business details
Listing details

This listing includes service information, customer review signals, a photo gallery, and public contact details to help homeowners compare this business more easily.

This profile includes more business details, homeowner trust signals, and a fuller public presentation.

  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Has an established presence within this local market.

Services Covered

  Plumbing Services
  Renovation Services
  Water Heater Replacement
  Water Heater Services
  Installations
  Leak detection and repair
  Gas Line Installation
  Repairs
  Toilet Installation
  Faucet and Fixture Repair
  Drain Line Repair
  Pipe Replacement
  Shower Valve Repair
  Sump Pump Service
  Garbage Disposal Install

Services commonly include: water heater installation and replacement, leak repair, drain line fixes, fixture installs (faucets, toilets), and gas line work for appliances and fireplaces.

Reviews

Customer Reviews

Justin Toft
Jeremy and his team were fantastic to work with today. They were patient throughout the entire process and didn’t let the few snags we ran into slow them down or get them discouraged. Instead, they stayed focused, worked through each issue,…
View full reviewShow less
Jeremy and his team were fantastic to work with today. They were patient throughout the entire process and didn’t let the few snags we ran into slow them down or get them discouraged. Instead, they stayed focused, worked through each issue, and found solid solutions. The end result turned out great, and I honestly couldn’t have done it without them. Highly recommend! Will use Herman Allen again for sure!!
Cindy Thomas
On the way home from vacation, my daughter called and said we had no water. I called Herman W. Allen and they came out the same day and had everything fixed the next day. Both Gary and his helper (I'm sorry I forgot your name) were very pr…
View full reviewShow less
On the way home from vacation, my daughter called and said we had no water. I called Herman W. Allen and they came out the same day and had everything fixed the next day. Both Gary and his helper (I'm sorry I forgot your name) were very professional, polite and made sure everything was working properly before they left. Thank you so much guys!!!
Evan
Just had Dalton Collins and Mike his helper install a new water heater for us and also fix an active leak in one of our bath drain lines. Dalton had done work for us in the past and I have been so pleased with his courtesy and excellent wor…
View full reviewShow less
Just had Dalton Collins and Mike his helper install a new water heater for us and also fix an active leak in one of our bath drain lines. Dalton had done work for us in the past and I have been so pleased with his courtesy and excellent work that when I needed to have some more work done, I requested that we schedule it so Dalton could work for us again. Highly recommend Dalton and Herman W. Allen. Great folks, not cheap mind you, but worth the quality.
Isaac Roscher
Jeremy and his pal came over to install a new gas water heater after my old one crapped the sheets. He was very polite and wanted to make sure everything was ready. After he installed it, his buddy cleaned up after their mess. They made sur…
View full reviewShow less
Jeremy and his pal came over to install a new gas water heater after my old one crapped the sheets. He was very polite and wanted to make sure everything was ready. After he installed it, his buddy cleaned up after their mess. They made sure everything worked before leaving and were super helpful. Also great company. I also appreciate the clerk who was helpful over the phone. Great service and I would recommend them to anyone.
Whitfield Hines
Chip Pasker and his team are the best. Helped us with outdoor plumbing and gas, as well as interior gas line for fire logs. Great service - competitive pricing - took care of us from start to finish. Dalton and Cameron were there every day…
View full reviewShow less
Chip Pasker and his team are the best. Helped us with outdoor plumbing and gas, as well as interior gas line for fire logs. Great service - competitive pricing - took care of us from start to finish. Dalton and Cameron were there every day - super personable, knowledgeable, and efficient - they get the job done. Complete pleasure to work with this team. I highly recommend Herman W Allen, Plumbing, Heating & Cooling.

Write a Review

Share your experience with this business. Reviews are moderated before they appear publicly.

Special Offers

Emergency Service

Emergency service may be available for urgent issues.

Frequently Asked Questions

Common requests include water heater replacements, leak repairs, fixture installs, and gas or water line work. The team also addresses troubleshooting for low water pressure and aging plumbing components.

Based on customer feedback, the company frequently replaces water heaters and works to schedule promptly during regular business hours. Availability can vary by season and workload, so calling ahead helps confirm timing.

Reviews regularly mention that crews tidy the work area before leaving. They also test the system and confirm operation with the homeowner.

Service commonly extends across Hanover and the Greater Richmond region, including Mechanicsville and nearby communities. If you’re just outside these areas, call to confirm availability.

You can call during weekday business hours to discuss your project and schedule a visit if needed. For replacements like water heaters, providing model details and photos can help streamline the estimate.
 Verified Listing

Opening Hours

  • Monday 8:00 AM – 5:00 PM
  • Tuesday 8:00 AM – 5:00 PM
  • Wednesday 8:00 AM – 5:00 PM
  • Thursday 8:00 AM – 5:00 PM
  • Friday 8:00 AM – 5:00 PM
  • Saturday Closed
  • Sunday Closed

Request Service

Business Details

Business Rating
4.40 (251 reviews) Pro Listing
Address
8701 Mongo Wy, Mechanicsville, VA 23116
Business Type
Plumber
Website
https://www.hermanallenplumbing.com/
City Page
Plumbers in Rockville, Virginia

Looking for more plumbers in Rockville?

Compare local businesses, customer reviews, and featured providers across Rockville.

Browse Rockville Plumbers

Location Map