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RL Lacoss Plumbing and Heating says on its website that it has met the plumbing and heating needs of northern New Hampshire and Vermont since 2023. It holds a 5-star Google rating from 22 ratings. A 2025 customer said Roland and Catherine installed a heat pump water heater in a day, and later talked them through tightening a leaking dishwasher valve stem by message. A 2025 customer said Roland did the plumbing for their log cabin build and was scheduled to return to install a water treatment system. A 2025 customer said Roland replaced their hot water heater. A 2024 customer said Roland installed a new heater in a few hours after their oil-burning hot water heater started leaking before Christmas. A 2023 customer said Roland moved their baseboard heating element to a different wall.
I cannot say enough great things about this business. They are knowledgeable and generous with their time. I highly highly recommend them .
RL Lacoss Plumbing is amazing! Great quality work and amazing communication. I highly recommend them and cannot thank them enough for the quick turnaround.
This review is overdue. Roland and Catherine installed a heat pump water heater for me back in October. They did it in a day and did a great job. It's been running well ever since. More recently, I had to disconnect and reconnect my dishwasher. In the process, the valve started to leak. I messaged them right away given my past experience. They were able to talk me through tightening the stem which was the problem and stopped the leak right away. Virtually any other plumber I've worked with, would have taken a day or two to come out and then charged me a lot of money just to turn a phillips screwdriver to tighten the stem. I really appreciate both the responsiveness and quality of the work from RL Lacoss Plumbing and Heating. They will be my first call for all plumbing needs.
So glad we found RL Lacoss plumbing and Heating for our log cabin build. Roland is a true craftsman, his work is amazing, he definitely takes pride in what he does. And Cat, she was able to get our other contractors on schedule so she and Roland could keep to their commitment. Very much appreciated. We have already scheduled RL Lacoss plumbing and Heating to return to our home to install a water treatment system. Would highly recommend them for any of your plumbing needs.
We’ve had multiple services by RL Plumbing and we’ve been satisfied with all of them. They are professional, friendly, and hassle free. I recommend them, and we will use them again in the future.
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2 changes recorded — last scanned Oct 30, 2026.
Typical New Hampshire range for this kind of work, from regional averages — not a quote from RL Lacoss Plumbing and Heating. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$4,700 – $10,700
Typical HVAC project around $7,700
Prompt repair visits5.0
Water treatment installs5.0
Smoking plug fixed within a couple of hours5.0