Business Details
4 Years
experience
Your Trusted Pool & Spa Service Experts in Rockville, MD
Twin Pool and Spa was founded to address the need for specialized, professional pool service and repair in the Maryland and Virginia suburbs of Washington DC. With over 34 combined years of experience, owners Brent and Derrick Marth provide unmatched expertise through certifications including Certified Pool Operator (CPO), Certified Maintenance Specialist (CMS), and Certified Service Technician (CST). Our family-owned business combines technical mastery with personalized service, offering comprehensive solutions for pool opening, maintenance, repair, and winterization. We prioritize transparency, adhering strictly to manufacturer guidelines while delivering factory-trained warranty services for major brands. Our commitment to quality is demonstrated through annual equipment diagnostics, customized maintenance plans, and educational pool school sessions that empower homeowners. As a certified warranty station for Pentair, Zodiac, and Hayward among others, we ensure every service extends equipment longevity while maintaining safety and efficiency.
Services
Pool Opening
Pool Repair
Pool Maintenance
Pool Closing
Automation Systems
Water Testing
Equipment Repair
Winterization
Pool Cleaning
Chemical Balancing
Served areas
- Rockville, Potomac, Gaithersburg, Germantown, Bethesda, Chevy Chase, Frederick, Urbana, Fairfax
Details
- Year established: 2022
Highlights and features
- We have 34+ years of combined experience in pool technology and chemistry
- Our technicians are factory-trained warranty specialists for major equipment brands
- We provide personalized concierge-level service without franchise intermediaries
- We implement smart automation systems for sanitation and energy efficiency
- Our labor is guaranteed for one year after service completion
Associations and certifications
- National Swimming Pool Foundation (NSPF)
- Pool and Hot Tub Alliance
Services
Pool Opening
Our comprehensive pool opening service prepares your pool for swim season with equipment inspection, water chemistry balancing, and debris removal. We photograph systems to identify potential issues, test heaters, and install automatic cleaners while providing detailed maintenance reports. Proper chemical treatment ensures safe swimming conditions within two weeks of opening.
Pool Repair
Factory-trained technicians diagnose and repair all pool equipment including pumps, filters, heaters, and automation systems. We provide honest repair/replace recommendations while maintaining manufacturer warranties. Our CPO-certified team services major brands like Pentair, Hayward, and Raypak with guaranteed labor for one year.
Weekly Maintenance
Scheduled maintenance includes water chemistry testing, debris removal, filter cleaning, and equipment inspection. Our $140/week service covers vacuuming, tile brushing, and chemical adjustments using owner-supplied materials. We provide monthly computerized water analysis and vacation service options for regularly maintained pools.
Pool Closing
Professional pool closing includes water level adjustment, chemical treatment, equipment winterization, and cover installation. We inspect systems for winter damage prevention and offer optional reconditioning services for automatic cleaners and heaters. Custom winter service plans include mid-season antifreeze checks between October and March.
Automation Systems
We install and maintain automated pool systems for sanitation, pH control, and cleaning equipment. Our smart technology solutions reduce energy costs while enabling wireless monitoring through mobile apps. Services include system retrofits, programming, and integration with existing pool equipment for enhanced efficiency.
People
Brent Marth
Co-Owner & Certified Technician
With 34 combined years in pool technology, Brent attained CPO, CMS, and CST certifications. He co-founded Twin Pool and Spa after managing a Hawaiian pool company and working as senior technician at a Gaithersburg firm.
Derrick Marth
Co-Owner & Certified Technician
Derrick brings extensive pool chemistry and automation expertise from his Hawaiian pool company experience and subsequent work at a top Maryland pool firm. He holds CPO, CMS, and CST certifications through NSPF and Pool and Hot Tub Alliance.
Questions
What pool services do you offer in Rockville?
We provide pool opening, closing, weekly maintenance, equipment repair, automation systems, water testing, and winterization services for residential pools in Rockville and surrounding areas.
Are your technicians certified?
Yes, our owners hold Certified Pool Operator (CPO), Certified Maintenance Specialist (CMS), and Certified Service Technician (CST) credentials through NSPF and Pool and Hot Tub Alliance.
Do you service all pool brands?
We service all major pool equipment brands including Pentair, Hayward, Raypak, and Zodiac as a certified warranty station for Montgomery, Howard, and Frederick counties.
What are your service hours?
Our office operates Monday-Friday 8AM-5PM. Emergency service calls are available during normal business hours with after-hours assistance limited to scheduled appointments.
How much does pool maintenance cost?
Weekly maintenance starts at $140, pool openings from $399, and closings from $385. Custom quotes are provided after on-site evaluations for specific pool requirements.
Do you offer pool automation?
Yes, we install and maintain smart automation systems for sanitation, pH control, and cleaning equipment with wireless mobile integration to optimize pool efficiency and reduce energy costs.
Reviews (16)
Lisa Meerdter
Jul 03, 2025
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Weve had two occasions where we couldnt figure out what to do with our new Pentair pool filter and the company who installed it was rude and disrespectful. Twin pools is a dream to work with. They are quick to respond and solve any problems that arise. They are the best.
Jan Castle
Apr 04, 2025
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We have had problems with two other pool companies not showing up on time and acted very unprofessional. These guys have been perfect always on time or early and they get our pool open and closed quick. We are very happy we found them.
Julee W.
Feb 10, 2022
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Excellent service and also such friendly technicians! It's a family business and it's so cool how much they all care about their company, it really shows. Feeling good about having a pool company nearby that can keep my water in check and my pool heater running good.
Charles B.
Aug 20, 2021
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One of the few companies in the area who will service an above ground pool. They provided friendly service, recommended the most affordable fix, and came to my house within a few days of me asking. Visit 1: Diagnosis and recommend I order parts. Visit 2: Install parts I ordered and fix. Only charged me for labor time which worked out as 1hr despite 2 visits. Problem (needed new filter) completely fixed and lasted all Summer so far.
They came less than 48hrs after parts I ordered arrived. Tech (Brett) said they know the timeliness necessary on broken filters and want to take care of customers. Will definitely recommend and will be my first call for any future needs (including if I ever upgrade to an in-ground pool).
They came less than 48hrs after parts I ordered arrived. Tech (Brett) said they know the timeliness necessary on broken filters and want to take care of customers. Will definitely recommend and will be my first call for any future needs (including if I ever upgrade to an in-ground pool).
Kathryn Montague
May 30, 2021
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We have been absolutely thrilled with Twin Pool and Spa. This is our first season owning a pool, and they answered our many questions and provided great advice. Their rates are reasonable, and they are very knowledgeable and super pleasant. The pool was sparkling clean with stable chemistry all summer. I highly recommend this family-run business!
Yiani Barlas
May 25, 2021
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Top notch well trained expert technicians I trust no one else with my pool needs. These guys got it down to a science they also service all types of in pool cleaners and the actual owners of the company arrived at your doorstep to do the work A ++ HIGHLY RECOMMENDED!
RIch Olsen
Apr 03, 2020
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Brent & Derrick are very knowledgeable & easy to work with. Ontime & competitively priced. Honest evaluation of my pump lifespan.
George A.
Apr 02, 2020
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I've offered reviews about Twin Pool & Spa before - but I'll say again. In my 20 years of being a pool-owner, these guys are the BEST in the business for pool care and maintenance. So glad I have them!
C. Day
Mar 24, 2020
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We are so thankful we found Twin Pool and Spa. We have always received prompt service and they are so knowledgable. The best pool opening we have received, they went above and beyond. I highly recommend! Look no further, the BEST service we have ever received on our pool!
George Assimakopoulos
Mar 09, 2020
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I live in Bethesda, MD and have been searching for a locally owned pool service company that has a wide-ranging set of support. My search is OVER! I cannot say enough about Twin Pool & Spa. The twins Derrick & Brent (yes, they really are twins) visited my home, saw my pool and said "let us handle this please." The rest is history! Our pool is now in good hands hopefully for a very long time. This is a family-owned and run business. When you call, ask for Martha (that's the mom) who is awesome too. I highly recommend Twin Pool & Spa!
Gwen Barch
Feb 17, 2020
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Twin Pool & Spa is one of those service companies that you hope beyound hope you will run into in your life time. I was in a bad spot in mid- August when my filter pump went out and my then pool service company of which I had been a cutomer for 23 years said they could not get out for two weeks. Reluctantly, I agreed to wait but asked if when they came to make sure they had the appropriate pump on their truck.
They assured me they would. On Friday the day of the service call they came determined it was in fact the pump and told me it would be another four days at the earliest before they could return and fix the problem. At this point I started calling around to find someone who could come out. Thank God I found Twin Pool & Spa they got the pump and came out on Sunday and fixed my pool. Subsequently I have swiched my pool services to Twin Pool & Spa. My closing in October was the smoothest least intrusive closing I have been through in 23 years. THANK YOU TWIN POOL & SPA
They assured me they would. On Friday the day of the service call they came determined it was in fact the pump and told me it would be another four days at the earliest before they could return and fix the problem. At this point I started calling around to find someone who could come out. Thank God I found Twin Pool & Spa they got the pump and came out on Sunday and fixed my pool. Subsequently I have swiched my pool services to Twin Pool & Spa. My closing in October was the smoothest least intrusive closing I have been through in 23 years. THANK YOU TWIN POOL & SPA
Ivy Mekonnen
Dec 13, 2019
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Their costumer service and work is outstanding! They definitely know how to get work done quickly but efficiently! I definitely recommend them and the lady that answers the phone is so nice and helpful!
Gina L.
Mar 29, 2019
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So happy to see Brent & Derrick branch out on their own again! They are true pool professionals with the motivation, knowledge and experience to keep any swimming pool clean, clear and in top notch condition
Gina L.
Mar 20, 2019
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So happy to see Brent & Derrick branch out on their own again! They are true pool professionals with the motivation, knowledge and experience to keep any swimming pool clean, clear and in top notch condition.
Charlie Bevilacqua
Nov 14, 2018
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The owners/operators are extremely knowledgeable and confident in their assessment of your particular concern. You can depend on their professionalism, punctuality, and courtesy. If you hire them for ongoing maintenance, you will not regret it!
Charlie Bevilacqua
The owners/operators are extremely knowledgeable and confident in their assessment of your particular concern. You can depend on their professionalism, punctuality, and courtesy. If you hire them for ongoing maintenance, you will not regret it!