Krunoslav S.

Building an indoor American style hot tub in Europe was a big challenge for me. Especially here in Croatia, such things were never built DIY! Gene was very helpful during the whole process, and his advice, books and videos made this project possible and made me a better engineer. Thanks again for your help Gene! […]

Eric E.

Hi Gene, it was a total pleasure working with you. You are a class act with a genuine and insightful level of service to your customers that non only provides the confidence needed to make it through the entire project, but makes the project a whole lot of fun along the way! The detailed information, […]

John C.

Several years ago, I was curious about the possibility of building my own hot tub. After a lengthy search online, I stumbled on Gene’s website. I ordered the video and book immediately. After reading through the material at least several times and watching the video several times, I finally pulled the trigger and emailed Gene. […]

Travis W.

We had the great fortune of finding Gene and Custom Built Spas online and he was able to guide us along on our hot tub building journey. Being designers we wanted to create something special and truly unique. We had absolutely no idea what we were getting ourselves into but Gene was there to help […]

Adam L.

“I highly recommend Gene and Custom Built Spas, the value you get is excellent. Essentially you learn how to build a hot tub or small pool. Not only can Gene provide all the equipment at a very fair cost in order to build your project, he is extremely thorough with explanations if you have to […]

Dale F. Hot Tub WA.

“Hi Gene, I wanted to let you know that your instructions for a DIY hot tub were fantastic.  I referred to the video and booklet throughout the project.  As a one-man labor force, and with limited spare time, the project took me a bit longer than expected, but turned out real nice, mostly because of […]

Richard S.

Good morning Gene, I want to let you know how much I really appreciate your help and guidance with the construction of my spa, I could not have done it without you.  Your knowledge regarding spas and providing all of the equipment and parts that I needed was outstanding. Your videos and your literature were […]

Jim S.

“The spa construction methods offered by Gene Trumbull and Custom Built Spas are comprehensive, easy to follow, and truly do allow home owners with average tool using skills and a little common sense to build a spa that will rival anything out there.  The initial purchase of the spa equipment pack and construction manual are only […]

Vic A.

I found Gene’s website online after getting little-to-no response from local pool builders to renovate a dilapidated 1940’s pool and add an in-ground spa. After reading Gene’s book and watching his videos, I convinced myself I could do the work myself.  Gene’s assistance in the design, equipment order, and support through the building process was […]

John H.

Hi Gene… Thanks again for all your personal help with my hot tub project! It was great working with you and having someone who was always quick to answer any of my questions as I went through the construction phase. Your support made all the difference in the success or our project. I’m sure my […]

Del C.

Building my spa was a little bit of a challenge, (I did a round spa) a little more work for an avid DIY’er. But with Gene’s simple instructions and very thorough videos, you have a pro with you every step of the way. He was happy to take my calls many times throughout the process, […]

Ken M.

Hi Gene, I was in the spa today and remembered to take some pictures to send you. This project took a little bit longer than expected but that was mainly a result of the patio area. The actual building of the spa was fairly easy, all because of your guidance. Thanks again for all your […]

Ricky S.

Everyone that soaks in our new, amazing hot tub says “I can’t believe you built this yourself!”. Gene was with us every step of the way as we went through the process of building our own hot tub. We’ve learned so much from Gene’s DVDs, books, and incredible responses to emails and phone calls. He makes […]

Terry S.

Our new hot tub is a GREAT addition to our backyard and your instructional DVD’s, equipment ordering and advice by telephone made it all possible. Thanks so much again for being the real deal.

Joel B.

We ended up with a spa that exceeds what we had dreamed. If you have a little imagination and some determination, Gene can provide the know-how! Thanks to Custom Built Spas we now have a dream spa in our own back yard!

Sebastian T.

In meeting with Gene the very first time, I was convinced that I would not be misled or disappointed. His level of expertise and knowledge in Spa Construction was always provided and conveyed to me during the entire process with exceptional customer service. I felt that while I was building my Spa, Gene was like […]

Russ M. Hot tub

Our home had an old Foxx in-ground vinyl pool that required repairs on a regular basis and as it was nearing 40 years in age it needed to be “retired”.  Not ready to give up on having a backyard water feature we considered our wish list: no need for 28,000 gallons of water with an […]

Bob A.

I was very excited to find your web site, which used concrete block as a base. Since, I am a bricklayer; it was easy for me to install the base of the project. The work was done by me, my wife and my son

Roger N. San Diego, CA

Thanks for everything Gene! We couldn’t have completed this project without your guidance and support! Here is a listing of just a few of the project’s details. The ports along the south side allow water to spill over into a basin that flows to a sump at the northeast corner and then is returned into […]

Kim W.

I can without a doubt state that no matter what problem I encountered, Gene was with me every step of the way. His unconditional support is a big part of what makes my renewal room the most beautiful and revitalizing spa I have ever been in. I have been in spas all over the world and am convinced that Gene and I built the best!