If your water heater is leaking from the tank, flooding a basement or garage, or has died with no hot water, call now. Dispatch is open 24/7, and same-day appointments are available when schedules allow. Close the cold water valve above the heater, keep clear of wet floors, and tell us the fuel type and tank size if you can read it from the label.
This page covers replacement forced by a failure. If your heater still works and you want to plan an upgrade, a different fuel or a heat pump, see water heater installation. If you are not sure the tank is beyond saving, water heater repair explains which failures can be fixed.
When a failed heater has to be replaced right away
A leaking shell is the clearest case. Once the inner steel liner rusts through, water finds its way out and the leak only grows. A tank full of 40 to 50 gallons can empty onto your floor, and wet insulation, drywall and stored boxes soak it up fast.
Other signs point the same way. A tank that has failed repeatedly, rust-colored hot water, rust streaks at the base, or a heater far past its expected life all suggest that spending on parts is the wrong move. A plumber can look at the tank and tell you which side of the line you are on.
While you wait for the plumber
- Smell gas, or feel headache and nausea near a gas heater? Leave the building and call 911 or the gas utility emergency line. Carbon monoxide has no smell.
- Close the cold water shutoff on the pipe above the tank. Turn the handle clockwise until it stops.
- Switch off the heater's breaker if you can reach the panel on dry floor. Do not step into standing water near an electric heater.
- Move stored items off the floor and away from the tank, and lift the water with towels or a wet vacuum only if the power is off.
- Note the label details: fuel type, tank size in gallons, and the room it sits in. A photo of the label saves time.
Repair or replace: how the decision gets made
Age and the location of the failure usually settle it. This is a general guide, and the plumber confirms on site.
| Situation | Usually points to | Why |
|---|---|---|
| Water seeping from the tank shell or bottom | Replace | The liner has failed and no patch holds |
| Tank is past a typical lifespan and fails again | Replace | Repairs stack up while the tank keeps aging |
| Leak at a fitting, drain valve or relief valve | Repair | The tank is intact, only a part has failed |
| No heat, tank dry and clean outside | Repair | Elements, thermostats and pilot parts are separate |
| Heavy rust or sediment, rumbling for years | Replace soon | Hardened sediment and a spent anode rod shorten tank life |
How a same-day swap goes
Confirm the right replacement
We match fuel, tank size and venting to what you have, and tell you if a different unit fits better.
Shut off and drain the old tank
Water, gas or power is isolated, then the tank is drained and disconnected.
Set and connect the new unit
The new heater goes in with new flex connectors, a relief valve and a discharge line sized for it.
Check venting, gas and combustion
On gas units, joints are leak-tested and venting is checked before the burner runs.
Fill, heat and test
We fill the tank, purge air, bring it to temperature, and check every connection for drips.
Remove the old heater
The old tank leaves with us, so you are not left with an empty shell in the basement.
Replacement choices when time is short
Most emergency swaps go back in with the same fuel type, because that is what the house is already piped for.
Gas tank heater
The usual choice in houses with gas service. Venting has to match the new unit, and the plumber checks it before the burner runs.
Electric tank heater
Needs a dedicated circuit of the right size. Simple to swap when the existing wiring suits the new model.
Heat pump (hybrid) tank
Uses much less electricity than a standard electric tank but needs clearance and air around it, and drains a condensate line.
Tankless unit
A different project with gas, venting and electrical needs. See tankless water heater if you want to look into it.
Venting and old chimney flues
Many Rocky Hill homes built from the 1960s through the 1980s have a gas heater venting through an older masonry chimney. New heaters often vent differently, and a flue that was fine for a larger old unit can be oversized for an efficient new one. A mismatched vent can let exhaust gases back into the house.
That is why venting is part of every gas swap. If you want to reroute the vent through a side wall instead of the chimney, tell us when you call. The change needs planning, and it may need a permit, so ask the Rocky Hill building department what applies to your job.
Safety checks after a heater swap
A swap is quick, but a few checks matter more than speed. Run through these while the plumber is on site and again the next day.
Safety checklist after the swap
- Gas smell near the heater or the gas line? Walk everyone outside, leave switches alone, and call 911 or the gas utility emergency line once you are clear of the building.
- Carbon monoxide gives no smell. Headache, nausea or confusion in the household after a gas swap means get outside into fresh air and call 911.
- Find the pipe from the temperature and pressure relief valve. It should run downward and end in the open. If it ever drips or discharges, tell us, and never cap it.
- Run the hot tap carefully the first time. Water hot enough to scald can burn in seconds, so have the plumber confirm the temperature setting before the household uses it.
- For gas and oil units, ask for the vent and draft check before the plumber leaves, especially if the old chimney flue was reused.
- Point out the cold water shutoff, gas shutoff and breaker to everyone in the house, so the next leak is a short one.
What water heater replacement costs
We give a clear price before work starts. These factors move the number the most.
What moves the price
- Tank size and fuel type: a larger tank, a heat pump or a power-vented gas model costs more than a standard tank.
- Venting changes: reusing a chimney is simpler than converting to side-wall venting.
- Condition of the connections: corroded shutoffs, old gas flex lines or a failed relief valve line must be replaced.
- Access and removal: a basement with stairs or a tight closet adds time.
- Time of the call: nights, weekends and holidays are usually priced differently from weekday work.
Call (860) 397-8103 and we will quote a clear price before the old tank comes out.
Call the 24/7 line. Tell us the fuel type and tank size and we send a licensed plumber.
Questions homeowners ask
Do you handle water heater emergencies at night or on weekends in Rocky Hill?
Yes. Dispatch answers 24/7, including nights, weekends and holidays. Tell us what happened and we book the first licensed plumber who can reach you. After-hours work is priced differently from weekday work, and you get the price before work starts.
Can you replace my water heater the same day?
Same-day appointments are available when schedules allow. A standard like-for-like swap is often finished in one visit. Venting changes, fuel conversions or an unusual size can take longer. The dispatcher tells you what to expect for your situation.
Do you remove and haul away the old water heater?
Yes. The old tank is drained, disconnected and taken out of the house with us. Tell us about stairs or tight spots when you call, since they affect how the job is planned.
How do I know my tank is too old to repair?
Check the label for a date code, or give us the serial number. A tank that leaks from the shell, has heavy rust at the base or is well beyond a typical lifespan is rarely worth repairing. The plumber will say so after looking at it.
Can I switch from gas to electric or to a heat pump?
It can be done, but it is not a quick swap. It needs the right electrical circuit, clearance, and often venting or condensate changes. Our installation page covers planned fuel changes in more detail.
Is a permit needed to replace a water heater?
Ask the Rocky Hill building department. Requirements vary by job type, and the state building code is based on the 2021 International Codes. We can tell you what the work involves, and the department tells you what the town needs.
Do you serve Wethersfield, Newington and Cromwell for water heater replacement?
Yes. We serve those towns from Rocky Hill, and the dispatcher confirms availability for your address when you call. See our Cromwell page for how we cover the south side.
Call the 24/7 line, describe the problem, and we confirm what it will cost before any work starts.