Water Heater Repair in Cohasset, MA

Hot Water Back On Today

Same-day water heater repair service that gets your hot water flowing again without the runaround.

We Leave Our Customers Smiling

Ready for 5-Star Level Service?

Cohasset Hot Water Heater Service

Your Morning Shower Shouldn't Be Optional

When your water heater stops working, everything stops. No hot showers, no clean dishes, no laundry. You need someone who shows up fast and fixes it right the first time.

That’s exactly what you get with our water heater repair service in Cohasset. We diagnose the real problem, not just the obvious symptoms. Most repairs happen the same day, and when replacement makes more sense, we’ll tell you straight up.

You’ll have reliable hot water again, lower energy bills if you upgrade, and the peace of mind that comes from working with technicians who’ve solved this exact problem thousands of times before.

Trusted Cohasset Water Heater Experts

We've Fixed This Problem Before

Dempsey Energy has been keeping hot water flowing in Cohasset homes for years. We’re the local HVAC and plumbing company that homeowners call when they need it done right.

Our customer database includes over 12,000 satisfied clients who trust us with their home comfort systems. We know Massachusetts plumbing codes, we understand how coastal weather affects your equipment, and we respond quickly when you need us most.

Through our Dempsey Comfort Club, we help customers stay ahead of problems with regular maintenance and priority service. It’s how we’ve built our reputation in this community.

Water Heater Repair Process

Here's Exactly What Happens Next

First, we’ll ask you a few quick questions about what’s happening with your hot water heater. This helps us bring the right parts and tools to fix your specific problem.

Our technician arrives with a fully stocked truck and runs a complete diagnostic. We check the heating elements, thermostat, gas connections, venting, and electrical components. You’ll know exactly what’s wrong and what it takes to fix it before any work begins.

Most water heater repairs happen on the spot. For tankless water heater repair or complex issues, we might need to order specific parts, but we’ll get you temporary hot water while we wait. When replacement makes more financial sense than repair, we’ll walk you through your options without any pressure.

Ready to get started?

Explore More Services

About Dempsey Energy

Get a Free Consultation

Complete Water Heater Services

Every Type of Water Heater Problem

We handle traditional tank water heaters, tankless units, gas, electric, and hybrid systems. Whether you need emergency hot water heater repair, routine maintenance, or complete water heater replacement, we’ve got the experience and parts inventory to handle it.

Cohasset’s older homes often have unique plumbing configurations that require local knowledge. We’ve worked in these neighborhoods for years and understand how to navigate tight spaces, older electrical systems, and local code requirements.

Our service includes thorough testing after repairs, cleanup of the work area, and a clear explanation of what we fixed and why. You’ll also get practical advice on extending your water heater’s life and improving its efficiency.

How long does water heater repair usually take in Cohasset?

Most water heater repairs take 1-3 hours depending on the problem. Simple fixes like replacing a heating element or thermostat typically take about an hour. More complex issues involving gas lines, venting, or electrical work might take longer. We always give you a realistic time estimate before starting work, and most of our service calls result in same-day hot water restoration. For tankless water heater repair, the timeline depends on whether we need to order specific manufacturer parts.

Should I repair or replace my hot water heater?

If your water heater is under 8 years old and the repair cost is less than half the replacement cost, repair usually makes sense. For units over 10 years old with major component failures, replacement often provides better long-term value. We’ll give you honest advice based on your specific situation, including energy efficiency improvements and potential utility rebates for newer models. Age, repair history, and current energy costs all factor into this decision.

Do you service tankless water heaters in Cohasset?

Yes, we repair and maintain all major tankless water heater brands including Rinnai, Navien, Rheem, and Bosch. Tankless units require different expertise than traditional tank heaters, especially for descaling, gas line sizing, and venting requirements. We stock common tankless parts and have the specialized tools needed for proper diagnosis. Many tankless problems stem from hard water buildup or improper installation, both of which we can address effectively.

What causes most water heater problems in this area?

In Cohasset, we see frequent issues with sediment buildup from hard water, corroded anode rods due to coastal air, and thermostat failures from power fluctuations. Older homes often have undersized electrical panels that can’t handle high-demand electric water heaters properly. Gas units sometimes develop venting issues from settling foundations or blocked exhaust pipes. Regular maintenance catches most of these problems before they cause complete failure, which is why our Dempsey Comfort Club members have fewer emergency calls.

How much does emergency water heater repair cost?

Emergency service calls include a diagnostic fee that covers the first hour of labor and gets applied toward repair costs if you proceed with the work. Repair costs vary based on the specific problem and parts needed. Simple component replacements typically cost less than complex gas line or electrical work. We provide upfront estimates before starting any repair work, so you’ll know exactly what you’re paying before we begin. No surprise charges or hidden fees.

Can you help me choose a more efficient water heater?

Absolutely. We’ll calculate your household’s hot water usage and recommend the most efficient option for your needs and budget. This might be a high-efficiency tank unit, a tankless system, or a hybrid heat pump water heater. We factor in your home’s electrical capacity, gas line sizing, venting requirements, and available rebates. Many Cohasset homeowners are surprised by how much they can save with newer technology, especially when replacing units over 10 years old.

Local Resources

Cohasset, MA is located in Norfolk County in Massachusetts State