These guys exceeded all expections.. i read the last 2 reviews and was weary but now i see the past reviews were bogus. The owner Mr. Richard is a busy man but came to give me an estimate on a sunday which is my only day off and he was the only company of 5 to do so. He explained the job would take one day when another company told me 2-3. He handed me a hand written proposal within an hour of being in my house. No email. No ill get back to you. No BS. Still worried about the last reviews i went with him anyway. As he said his team of family members would be at my house at 7am, at 659am my doorbell rang. Here i met Angelo, the muscle. Ever look at your boiler and oil tank and wonder how it will get up your stairs? Answer is Angelo. By 10am they boiler was in a truck the tank came out in 6 peices and my oil was gone. Spotless!!By 8am 2 more trucks showed up with 4 workers. Here i met Richard Jr., Michael, Joseph, and Peter, the install team. What a well oiled machine these guys are. I kept distance but watched them work like robots. Each guy had a specific job which they executed perfectly. I was listening to them speak and i thought they were using profanity and dirty talk in my house also like the last review but i quickly realised that nipples and cocks and ball valves are all plumbing jargin. Maybe she was uneducated to the lingo. They showed me things about my house i never knew about for 20 years. These men were so great i felt obligated to buy them lunch and tipped each of them. Thumbs up and hats off to these guys. A family business that gets the job done in one day as promised.. someone raised these kids right!! read more

Richie The owner was very nice when he came to give an estimate for oil to gas conversion. He Explained that there are 2 rebates one i will get it and another i will not. All i will have to call his Wife and she will help me. The day after they have finished the job i called his wife EMILY in the office to get the paperwork for Rebate and she said VERY RUDELY that i am not getting any rebate because i am not eligible. I asked her that if i am not eligible then why did Richie explained the rebate and Promised that i will get it and she clearly said that he does not know anything what he is doing. Before i asked her anything else she hanged up the phone on me. I called back again and very nicely asked her a question which VERY RUDELY she answered that you are not getting any rebate and do whatever you wanna do and hanged up the phone again. Then i called RICHIE about it and asked him again very nicely about the rebate he promised and he almost CURSED me for no reason. He YELLED at me like i am a SLAVE. I still did not get mad at him or anything because i knew that they got my MONEY. He did not answer any of my question and keep Yelling and almost Cursing. I WAS REALLY SHOCKED. First time in my life someone talk to me or Behave like that. I never called them back. I called National Grid about the Rebate and they said that i am eligible and they have processed it for me. DO NOT GIVE THIS COMPANY ANY BUSINESS WORST CUSTOMER SERVICE AND EXPERIENCE. YOU WILL BE ON YOUR OWN AND THEY WILL NOT HELP YOU FOR ANYTHING read more

Richie Holzhauer and his incredible crew have been the most trustworthy, honest, professional plumbing company we have ever encountered in our 27 years as homeowners. In December, they did my oil to gas conversion on our 77 year old heat system. In a few hours, my house was finally heated by gas....they removed the old burner/boiler and oil tank and not one drop of oil was dropped. Each crew member had a specific job and they all worked in sync (all cousins, this is a family business). They even ran a gas line for me for my fireplace so we can install an insert when we are ready.....just because I asked about it, they surprised me. They have done 3 other gas conversions for my immediate family as well. They also ran all new pipes for my elderly parents and moved their washer/dryer to the main floor so they wouldn't have to go up and down the basement steps. Today, they replaced a broken water main under my concrete. the job was done so quickly and you can't even tell with all that heavy digging and breaking concrete occurred.....incredible!!! we highly recommend Holzhaur Plumbing in Bellmore for all of your heavy plumbing needs.....quick, honest affordable .....can't thank Richie enough and Desmond for taking such good career the Sorrentino family.....forever grateful.....thank you !!!! Best, Marie Sorrentino read more

I recently had the pleasure of working with Holzhauer Plumbing, and I couldn't be more impressed with their service. Their expertise was evident in every aspect of the job, from start to finish. The team quickly diagnosed the issue and provided a thorough explanation of the necessary repairs, which immediately put my mind at ease. Their timeliness was exceptional. They arrived exactly when they said they would and completed the work efficiently without cutting any corners. It was clear that they valued my time and understood the importance of prompt service, which is a rarity these days. Furthermore, the pricing was incredibly fair. After comparing several quotes, I found Holzhauer Plumbing to offer the best value for the high-quality service they deliver. There are no hidden fees or surprise charges--just honest and transparent pricing. I highly recommend Holzhauer Plumbing to anyone in need of plumbing services. Their combination of expertise, punctuality, and fair pricing makes them a standout choice. Five stars all the way! read more

This company has a great team of workers. They are so effective and efficient in what they do. Highly professional, excellent work ethics, very high quality work and very knowledgeable about their work. I converted from oil to gas for my home heating and I'm so amazed and extremely elated of the awesome job that was done in my home. I was so thoroughly informed, the price is right and the quality of work is at the highest level and all the workers are wonderful. They are pleasant, polite and respectable. All work was done in one day, all cleaned up nicely and ready to go and I love it. Thanks to Richie Senior, Richie Junior, Angelo, Michael and the rest of the crew. Great people and the best work ever. Thanks also to Emily as you do an awesome job as well with those appointments and making things run smooth. You guys are the best. Highly highly recommended to all. Judy Robe in Valley Stream. read more

Holzhauer Plumbing provided an outstanding service from start to finish! The team demonstrated exceptional expertise, quickly identifying and explaining the necessary repairs. Their professionalism was evident throughout the entire process. One of the most impressive aspects was their timeliness. They arrived right on schedule and completed the job efficiently without sacrificing quality. It's rare to find a company that values punctuality as much as Holzhauer Plumbing. The pricing was fair and transparent. They provided a clear quote upfront, and there were no surprise charges. The cost was very reasonable for the high level of service they delivered. A special mention goes to Richie, the owner, whose leadership clearly drives the team's commitment to excellence. Holzhauer Plumbing is now my go-to for any plumbing needs. Highly recommended! read more

Holzhauer Plumbing & Heating did my boiler install in 2020; they were professional and knowledgeable: the install was done timely and at a great cost; considering that multiple discounts were applied... After the install I recommended a pastoral colleague who also was please with the professional job done. Today December 17 about 4 years after the initial install I incurred a problem that prevented my upstairs radiator from producing heat; Richard Sr. the owner used Face Time to courteously assist me with restoring my upstairs heat, ...I really appreciated his courteous HELP! if you're looking for a friendly professional business person with a great team, I highly recommend Holzhauer Plumbing & Heating! Bishop M. Way, Redeeming Grace Worship Center Inc. read more

I called for service to replace my indirect hot water tank's anode rods in the morning and Rich Jr. came in about two hours later. He noticed the expansion tank is full of water, replaced the tank with the anode rods together. He checked the boiler and cleaned the dirty flame sensor. Rich Jr. is very knowledgeable and friendly. They did my gas conversion 14 years ago and the job was well done. During the pandemic, my friend live in Queens and his hot water tank was leaking and Mike was able to replace the tank in the same day. The local plumber was more expensive and need to wait to order the tank. Rich Jr. and Mike are my go-to guys. read more

I cant say enough about what a great job these guys did...They were diligent, buttoned up, hardworking, and precise from start to finish. Start was Richie Sr estimating the job as to what was needed. The team coming when scheduled with a call letting me know they were on the way, and appearing as told. And most important, working with each member doing what they did best....This was not a simple job, but they gave me the confidence that it would be handled to perfection and that it was...Richie Jr, Michael and all the cousin's and workers were one hell of a team...I cant say enough as I said.... read more

These guys are great! The owner, Richard, came to give us an estimate and was very thorough in discussing the job. The crew (which is comprised of his family members) came early and worked the entire day to finish the job. They were clean, friendly and very knowledgeable. Any time we asked a question, they had a good answer and explained in terms we could understand. And the price was very reasonable. We are totally satisfied and would highly recommend them to anyone who is looking to convert from oil heat to gas. read more

I was so impressed by the work Holzhauer Plumbing and Heating recently did for me. I had an oil to gas conversion in my home. I received quotes from 5 companies, and Holzhauer's was the best price. When in my home, they treated the work they did on my home as if it were their own. They were very professional and knowledgeable. Their workmanship and cleanup from the job was exemplary. I would certainly recommend Holzhauer Plumbing & Heating to anyone considering an oil to gas conversion. read more

I had my original heating system replaced by Holzhauer Plumbing & Heating 1.5 years ago. From the first walkthru , estimate, contracting, installation and final cleanup, I had a fantastic experience. To date the efficiency gains and cost savings from the installation are as advertised maybe a bit better. The team was great, they left my house in good order and clean. I had one reason for a call back (nothing major) and I received an immediate reply and onsite response. read more

I wouldn't hesitate to recommend this company to anybody desiring a gas conversion! The entire crew were polite, experienced, quick, and thorough. They walked us through the entire process before and during the rip out of our old oil burner, tank, and water heater, and through the installation of the new equipment. All questions about the new system were answered to our satisfaction. We feel confident about our decision and will continue to refer others to this company. read more

I recently retired as a commercial building manager working for the largest commercial real estate company in NYC so I've had experience with most of commercial mechanical companies. Holzhauer plumbing and heating recently replaced an oil fired boiler and tank with a gas fired boiler and water tank. I can't give a higher recommendation for the mechanics who performed the work, professional, pleasant,neat and patient when explaining boiler functions. Great job read more

Excellent company! We had them do a big job for us and everything went perfectly. Their price was the best we could find. Their staff arrived promptly and got right to work. Everyone had a job to do and they did it quickly and professionally. The staff was friendly and extremely courteous. When they finished, everything was cleaned up and left spotless. Richie Jr. is a perfectionist and did a beautiful job . I highly recommend them. read more

I just converted to gas, they did good work and gave me the best quote out of all the contractors I interviewed and were even honest enough to let me know my chimney had already been lined (I had no idea) and deducted the cost of as same, I feel like other companies would have just went ahead and kept it as a cost since it appeared on the original estimate read more

Richie and his team did a natural gas conversion and piped a stove and NG BBQ for us - best price out of many we solicited and quality service - Richie's customer service and responsiveness to sort out a small issue right away can't be understated - highly recommend you give him a call if your looking at a conversion read more

I had an issue late night on a Saturday with the boiler. I called Holzhauer and got a response quickly and they helped me get the issue resolved over the phone. the didn't charge me for their time and wanted to make sure my family had heat as soon as possible. I recommend this company. read more

I used them to do an oil to gas conversion a few years ago. Great price from many other quotes I received. Install was great and painless. Needed some maintenance recently, Richard Sr. was in the area. He came and fixed it in no time. Great service! I recommend them to anyone! read more