- Navien & Rinnai
- Over 700 5-Star Reviews
- 20 Years Local
- Licensed & Insured
A tankless water heater heats water only when you turn on the tap, so you never run out halfway through a shower and you aren’t paying to keep 50 gallons hot around the clock. It also frees up the floor space an old tank takes up. That’s why more Merrimack Valley homeowners are making the switch when their tank reaches the end of its life.
Caron Heating & Cooling has served homes across Methuen and the Merrimack Valley for 20 years. Our licensed plumbers install and service tankless systems, mostly Navien and also Rinnai, and we repair most major tankless brands. We size every unit to your household, install it to code, and give you upfront pricing before any work begins. Call (978) 452-2766 or text 978-216-0555 to get started.
Tankless Water Heater Repair
Tankless units are reliable, but they do need attention. Call us if you notice:
- Water that runs hot, then cold, then hot again
- No hot water, or the unit won’t fire
- An error code on the display
- Low hot water flow or pressure
- Strange noises, or water leaking around the unit
- Hot water that takes much longer to arrive than it used to
Our technicians find the real cause, whether that’s scale buildup on the heat exchanger, a sensor, a venting or gas-supply problem, or a failed part, and tell you what the fix costs before we start. We repair Navien, Rinnai, and most other major brands.
Tankless Maintenance and Descaling
Massachusetts water can leave mineral deposits inside a tankless unit, which cuts efficiency and causes error codes over time. A yearly flush and inspection keeps the system running the way it should and helps it last.
Comfort Club members get scheduled maintenance, priority service, and 20% off repairs. The Comfort Club (our Safety & Efficiency Agreement) covers tankless water heaters along with heating and cooling equipment.
Tankless Water Heater Installation
What a professional install includes:
- Sizing to your home. We match the unit’s flow rate to how many showers, sinks, and appliances you run at once, so it keeps up on a busy morning.
- Gas line and venting. Gas tankless units need the right gas supply and proper venting. We check both and upgrade them when needed.
- Removal of your old tank. We drain, disconnect, and haul away the old water heater.
- Code-compliant installation and testing. We confirm temperature, flow, and safety before we leave, and walk you through how the system works.
Switching From a Tank?
Most homes can make the switch. Tankless gives you continuous hot water, a wall-mounted unit instead of a tank on the floor, and no energy spent keeping stored water hot. A tank costs less up front. We’ll look at your gas supply, venting route, and hot water demand and tell you honestly which fits your household.
Navien & Rinnai Tankless Systems
We mostly install Navien tankless water heaters, and we also install Rinnai. Both are proven, efficient systems, and our plumbers know them inside and out.
Considering a Heat Pump Water Heater?
Highly efficient electric water heaters that can qualify for Mass Save rebates. If rebates matter to you, see our water heater installation & repair page or ask us whether one fits your home.
Why Homeowners Choose Caron for Tankless Water Heaters
Navien & Rinnai
The brands we install most, and we service most others.
20 Years Local
Serving Merrimack Valley homes since 2006.
Over 700 Five-Star Reviews
A 4.9-star reputation for honest work.
Flexible Financing
Ask about financing options on a new system.
Upfront Pricing
You approve the cost before we start.
Licensed & Insured
Certified technicians who respect your home.
Frequently Asked Questions — Water Heaters
How much does a tankless water heater cost to install?
It depends on the unit size and on whether your home needs a gas line or venting upgrade. We give you a firm, upfront price after a quick look at your setup, before any work starts.
What size tankless water heater do I need?
Tankless units are sized by how much hot water you use at the same time, not by gallons stored. We’ll count your fixtures and appliances and recommend the right flow rate for your household.
Why does my tankless water heater go hot and cold?
The most common causes are scale buildup, a flow rate too low for the unit to fire, or a sensor or gas-supply issue. We can diagnose it in one visit.
What brands do you install?
We mostly install Navien, and we also install Rinnai. We repair most major tankless brands.
Do tankless water heaters qualify for Mass Save rebates?
Standard gas tankless units don’t. Heat pump water heaters can qualify. If rebates matter to you, ask us whether a heat pump water heater fits your home.