Tankless Water Heater Installation
Rinnai-certified tankless installation — endless hot water, lower gas bills, and a unit that lasts twice as long as a tank.
A tankless water heater heats water only when you open the tap, so you never run out and you stop paying to keep 50 gallons hot around the clock. Rinnai is the most trusted name in tankless, and we're a Rinnai-certified installer — which means factory-spec installation and full warranty protection.
Tankless isn't right for every house. Gas line sizing, venting, and water hardness all matter, and a bad install is the number one cause of tankless complaints. We'll tell you honestly whether it makes sense for your home and, if it does, install it correctly the first time.
What's Included
- Rinnai tankless installation & replacement
- Tank-to-tankless conversions
- Gas line sizing and venting
- Annual descaling and flushing
- Tankless repair — error codes, cold-water sandwich, low flow
- Recirculation pumps for instant hot water
- Condensing and non-condensing models
- Whole-home and point-of-use units
Frequently Asked Questions
How much does a tankless water heater cost installed?
Installed cost in Massachusetts typically runs several thousand dollars depending on gas line and venting work. Mass Save rebates are often available for qualifying units. We give you a firm written quote before any work starts.
How long do tankless water heaters last?
20+ years with annual descaling, versus 8–12 for a standard tank. That longevity, plus lower gas bills, is where the savings come from.
Does tankless work well in cold Massachusetts winters?
Yes, when it's sized for our groundwater temperatures. We size for a winter incoming temperature of around 40°F so you get full flow in February, not just July.
Where We Offer Tankless Water Heaters Service
Based in Westborough, we serve all of Central Massachusetts, the South Coast and Cape Cod, including:
What Our Customers Say
Don't take our word for it — here's what Massachusetts homeowners say about working with Ken and the team.
"Ken and his team did an outstanding job replacing our old boiler. They were professional, clean, and explained everything clearly. The new system is running perfectly and our heating bills have already dropped. Highly recommend!"
"Called at 7 AM with no heat in January. Ken answered right away and had a technician at my house within two hours. Fixed the issue quickly and the price was completely fair. This is the only plumbing company I'll ever call."
Need Tankless Water Heaters Help? Call Today.
Same-day service in most cases, honest pricing, and work that's done right the first time.
508-366-0475