Masi Plumbing & Heating

★★★☆☆ 2.9 / 5 (21)
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: 36 E Otterson St, Nashua, NH 3060
: (603) 889-2331
: http://www.masiplumbing.com

Company Overview

Nashua's Go-To Plumbing, Heating & A/C Experts Since 1964. No-Cost Estimates - Fair Rates.

At Splash Bath Showrooms (by MASI), discover the most comprehensive selection of tubs, toilets, faucets, showers, whirlpool tubs, vanities, towel warmers, bath furniture, and bath accessories in the region. Our inventory includes premier American brands and distinctive, elegant bath and kitchen fixtures from Europe and other countries that you won’t encounter elsewhere. What sets us apart is our unmatched expertise. We don’t just design baths; we also have plumbing expertise. We know how each product works and what’s required to make them perform correctly.

For all your residential plumbing, heating, and air conditioning requirements, MASI is ready to assist. Everything we do, every brand we offer, is the best we can provide. For over 40 years, MASI has led the plumbing and HVAC industry, and we intend to maintain that leadership. Whether it’s plumbing repairs or indoor air quality evaluations, we put our heart into every task. Our pride lies in providing excellent, cost-effective services to Hillsborough County and its neighboring communities. Small issues can escalate into costly problems, which is where we come in. Our preventative maintenance services are designed to detect problems early, saving you money. Keep your home operating efficiently and economically by installing energy-efficient water heaters and air conditioning units. We carry all major brands and even those hard-to-find components.

Business Services

  • Bathtub installation
  • Bathtub repair
  • Drain installation
  • Drain repair
  • Faucet installation
  • Faucet repair
  • Hot water recirculation pump installation
  • Hot water recirculation pump repair
  • HVAC installation or replacement
  • HVAC system repair
  • HVAC system maintenance
  • Plumbing inspection
  • Plumbing installation or replacement
  • Plumbing repair
  • Sewer installation
  • Sewer repair
  • Shower installation
  • Shower repair
  • Sink installation
  • Sink repair
  • Toilet installation
  • Toilet repair
  • Water heater installation
  • Water heater repair
  • Water pipe repair

Business Location & Hours



Mon:8:00 AM - 5:00 PM
Tue:8:00 AM - 5:00 PM
Wed:8:00 AM - 5:00 PM
Thu:8:00 AM - 5:00 PM
Fri:8:00 AM - 5:00 PM
Sat:Closed
Sun:Closed

Recommended Customer Reviews

Jon V.
★★★★★

Masi Plumbing deserves 5 stars. I called them with a broken grey water pipe. They came out promptly to fix it in just two days. The plumber was knowledgeable and did quality work at a fair price. I appreciate their fast, accurate service. Masi Plumbing is reliable and highly recommended.

Steven L.
★★★★★

My furnace let go on Friday. Bob from Masi came out for initial troubleshooting. Doug from Masi needed to come out for additional diagnosing. Unfortunately, I needed a new furnace. It was ordered first thing Saturday morning and was installed on Monday by Tim. These guys are very professional. They did the job quickly and explained everything to me. When the job was complete, they cleaned up everything - never knew they were there. I would recommend them 100% to anyone who needs plumbing/heating work.

Anindya R.
★☆☆☆☆

The team is very prompt in reverting back and responding but the key issue is, they lack expertise and knowledge when it comes to installing a tankless water heater.

I was given a quote of ~5K for the installation of a tankless water heater with the unit ( Navien NPE 240A2) that connected my existing 1/2-inch gas supply line.

The tankless water heater's take in more gas supply as it has a higher BTU and needed to heat the water much faster, so the required input was 3/4 inch based on spec of the heater. Clearly the team at Masi had no idea, though they claim they installed many such heaters.

Also, there was no mention of how to get the re-circulation going. There is a smart way to do so by using the re-circ valve installed that uses the cold water line as a re-circ line,,,, but the team at Masi had no idea.


I finally got the installation done for $1700 ( unit cost for navien was separate.)


I feel, these guys are out there with premium quotes without necessaruly having the required knowledge to do the job. So if the customer is not knowledgeable on the installation, they could get a incorrect installation done inspite of paying top dollar.

Kc N.
★★★★★

I had a whole house generator installed last fall. They just put my outdoor airconditioning unit back on after needed landscape changes. They painted pipes that the builder failed to paint and made sure a vent cap was on correctly. I had a tankless waterheater cleaned also. The men know exactly what needs to be done. I also appreciate the office staff for scheduling in a timely way. I am so glad that I read reviews and found this company.

Karen L.
★★☆☆☆

I recently moved into a house that had several plumbing issues. Masi seemed very professional up front. I supplied a list of issues and photos of the faucet/drains which needed repairs.
When the repair person came out he was not able to fix my main problem which was a constant dripping from a tub faucet. He said that they don't normally like to work on Glacier Bay because they are low quality. I told him that I needed to have it fixed. He was not prepared to do that I asked him to provide an estimate for the work so that they could come back out and do it. They never supplied an estimate. At this time the constant dripping is now a constant stream of water.

Rlet S.
★★★★★

We had central air and a gas fireplace install done. MASI was great. The estimate was true. All work was done in a professional manner. We did have to have them enter our home in the fall of 2020 when things were so uncertain. They were very respectful of our space. This winter we loved the gas fireplace. It saved us money in heating costs. Not a lot, but it all counts. This summer with the extreme heat, the A/c has been a godsend! Thank you MASI.

Karen D.
★☆☆☆☆

Major renovation, replacing all of the plumbing, bathrooms as well as 80% of the walls and ceilings and flooring. From start to finish, Masi made mistakes.
(1) baseboards pipes not installed properly. The result is that the pipes are clearly visible below the registers. They waited for me to complain to fix the problem. Sheetrock had to be patched, repainted and even some hardwood flooring had to be patched. Worse still, they claimed that nothing could be done about the less visible registers.
(5) they never turned the water on after installing the new heating registers causing my boiler to fault because of low water. It is only by chance that this was discovered as no one was living in the house during this massive renovation.
(2) below grade effluent pump caused septic to vent into the master bathroom and created a vacuum that drained the master bathroom toilet. Three visits by their certified plumbers to prove that the toilet wasn't blocked before they accepted that they hadn't designed the system correctly. They came up with a solution that involved cutting holes in the brand new ceiling in the lower level to add more pipes and traps.
(3) wired for three thermostats but only installed two. I discovered this when I went to set the heat in the lower level and couldn't find a thermostat. They did come back right away to install a thermostat but now it's more holes in the walls that have to be patched and they connected the thermostats to the wrong heating zones. Another appointment to fix that.
(4) plumbers are a mixed bag ... some are personable and others are rude. They act as if they are doing you a favor by fixing their mistakes.

(6)

Damian R.
★☆☆☆☆

It was 3° and our furnace was working intermittently. We called MASI to come and look at the furnace for a repair. Their technician said we needed a heat exchanger and red tagged the furnace. Red tag means you cannot use the furnace. He said the heat exchanger would take 5 days to get the part. He quoted $800 for the part. We called a local wholesaler the next day who said they the part in Nashua. We called Card heating and they came the same e day and replaced the control board. Card repaired the furnace for about $200 which included parts and labor. We filed a complaint with the NH fire marshal.

Michael G.
★★★★★

Natural gas became available on my road so had MASI come out last June and replace my oil boiler with a new Navien wall hung combi unit to heat my 3 bedroom split. Quick and professional. I was never without hot water. Very quite and clean. So far no problems and it was very cold last night and worked great.

George P.
★★★★★

I am a DIY'er so I do a lot of my own plumbing. Finding a shop that caters to the pros but is willing to help someone like me get the right materials and information to correctly complete a plumbing job is invaluable. Masi is such a shop. They have pro level supplies at reasonable prices and Bobby and the rest of the staff are always willing to answer any questions and explain the steps needed to finish my plumbing DIY. They have saved me lots of time and money, and have eliminated my frustration with big box store inferior materials. I highly recommend them.

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