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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon14
    Verified drain pipe installations reviews

Top-Rated Drain pipe installers in Amherst - Updated Nov 2026

Avatar for Grand Voyage Plumbing and Heating
Grand Voyage Plumbing and Heating
5.0(
61
)
Sump Pump or Interior Foundation Drains - Install

Serving Amherst, NH and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

Grand Voyage Plumbing and Heating is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. We have accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Water Heater
Water Heater
4th of July Savings
Gas Furnace
GE Air Conditioner

+1

7 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for A Really Good Plumber
A Really Good Plumber
4.5(
46
)
Sump Pump or Interior Foundation Drains - Install

Serving Amherst, NH and surrounding areas

Approved

In business since 2007

Emergency services offered

Credit card accepted

"He was very knowledgeable and very friendly and his prices are very reasonable compared to other contractors and he did a great job installing wyn well tank I would definitely recommend him for any repairs"
Additional Photos
Additional Photos
3 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Derry Plumbing & Heating
Derry Plumbing & Heating
3.7(
43
)
Basement Drainage Channels - InstallSump Pump or Interior Foundation Drains - Install

Serving Amherst, NH and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"My only complaint was when I made the call I was not told that there was a service fee - that is not right! The guys that installed the water heater were great and left no mess - they get 5 stars â­ ï¸"
Rinnai install
Designer shower
Drain line
Showroom shower/tub stall
Faucet fixtures

+2

Response time10 hrs
Response rate98%
9 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
4.6(
26
)
Sump Pump or Interior Foundation Drains - InstallBasement Drainage Channels - Install

Serving Amherst, NH and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

"Joe,James and Bobby did an excellent job replacing the sump pump And drains. My husband and I were so impressed with their abilities and how hard working they were. I would highly recommend Ground works Manchester to anyone who needs the same work done. Thanks to all the gentlemen for their professionalism and work ethic"
Foundation
Foundation
Foundation
Basement
Basement

+16

Response time12 hrs
173 neighbors recently requested a quote
Recommended by56%of homeowners
Tom Howe Septic Systems and Excavation
4.9(
8
)
Foundation Drainage - Install or Replace

Serving Amherst, NH and surrounding areas

Approved

In business since 1968

Free estimates

Customers say: Quick response

"We hired Tom to connect us to city sewer after the septic system failed on the house we purchased. He came highly recommended and did a great job, pulling permits, calling dig safe, getting the inspections, etc. He was fantastic to work with and his rates are very competitive. Sine the initial project we had him levels our back yard and spread and seed 60 yards of loam. Can't say enough about this company."
Response time2 days
3 neighbors recently requested a quote
Recommended by85%of homeowners
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Drain Pipe Installation FAQs, answered by experts

Boiling water helps unclog a drain, but usually only with a harder abrasive such as baking soda or vinegar. On its own, it isn’t the most effective tool. In addition, you shouldn’t use boiling water if you have PVC pipes, as it can soften or melt them. Use a plunger or enlist the help of a pro if you have plastic pipes.

Clogged pipes are one of the top signs your water heater is about to fail. Potential symptoms of excess sediment buildup include not enough hot water, leaks, unusual noises, low water pressure, and discoloration or odors in the water.

While you don’t have to run out and immediately buy a new toilet at the first sign of a clog, if the toilet keeps clogging because it’s a low-flow or poorly designed model, a new toilet may be the way to go. If your toilet keeps clogging, you can try using less toilet paper, adjusting the fill valve, checking the toilet vent pipe on the roof, and using a toilet auger to make sure nothing is stuck in the pipe or trap.

To unclog the drain pipe, remove the machine's drain hose from the pipe or sink drain, being careful to contain any water in it. Next, use a plunger for sink drains or a plumbing snake for a wall drain. Test the repair by pouring a small amount of water into the pipe before trying it with a laundry load.

A bit of water in the bowl can help unclog a toilet, especially if you're using a plunger. However, if the bowl is full to the brim, you'll need to strap on gloves and remove some of the wastewater in a cup or container so it doesn't overflow when you try to unblock the pipe. If you're concerned about it filling further, manually close the flapper in the toilet tank or turn off the water supply to the toilet.

The Amherst, NH homeowners’ guide to drain pipe installations

From average costs to expert advice, get all the answers you need to get your job done.