Boston's Navien SpecialistsHeat & Hot Water Done Right
Whether your Navien tankless water heater is on the fritz or your combi-boiler isn't keeping up with the cold, Vaughan Plumbing And Heating is Greater Boston's dedicated Navien expert — fast diagnosis, honest repairs, and lasting results.
What we do
Navien service, start to finish
Navien Repair
Error codes, no hot water, inconsistent temperatures — we've seen it all and fixed it all. We carry common Navien parts so most repairs are completed in a single visit.
Learn moreCombi-Boiler Service
Navien combi-boilers handle both home heating and hot water in one unit. We service, repair, and maintain all NCB and NHB series — keeping your heat and hot water running all winter.
Learn moreAnnual Maintenance
A yearly tune-up keeps your Navien running efficiently and extends its lifespan. We flush the heat exchanger, inspect all components, and make sure everything is dialed in.
Learn moreNew Installation
Upgrading from a tank water heater or old boiler? We handle full Navien installations — proper sizing, code-compliant venting, and a thorough walkthrough so you know your system.
Learn moreThe process
Getting your heat and hot water back is simple
Call or Book Online
Reach us by phone or submit a service request. We'll confirm a time that works for you — often same day or next morning.
We Diagnose the Problem
Our technician arrives on time, listens to what you've noticed, and runs a thorough diagnostic. No guesswork — just a clear explanation of what's going on.
Heat & Hot Water Restored
We fix the issue right, using genuine Navien parts whenever possible. Before we leave, we make sure everything is working and you understand what was done.
What homeowners say
Trusted across Greater Boston
★★★★★"Our Navien threw an error code on a Friday evening. Vaughan had someone out Saturday morning and fixed it in under an hour. Couldn't be happier."
★★★★★"I've had other plumbers look at my Navien and shrug. These guys knew exactly what was wrong within five minutes. Truly specialists."
★★★★★"Honest, on time, and explained everything clearly. I finally feel like I have a go-to person for my Navien combi-boiler."
No heat or hot water? We can help today.
Don't wait in the cold. Call us now or submit a service request and we'll get back to you within the hour during business hours.