Well Pressure Tanks & Constant Pressure Pumps in Southern NH
Pressure tank replacement, variable-speed constant pressure pumps, and city water booster pumps installed and serviced by licensed NH master and journeyman plumbers. Diagnose waterlogged tanks, short-cycling pumps, and low pressure on well or city water throughout Southern NH.

How Pressure Tanks & Constant Pressure Pumps Work
A well pressure tank stores water under pressure between the well pump and your home's plumbing, so the pump doesn't run every time a faucet opens. Inside, a rubber bladder separates pressurized air from the water, and the air pushes the water out at steady pressure. When the bladder fails or the pre-charge drops, the pump short-cycles, pressure swings, and pump life is cut short.
A variable-speed constant pressure pump takes a different approach: it ramps up and down to hold a steady 50 to 60 PSI no matter how many fixtures are running. On city water, a booster pump does the same when the municipal supply is low or fluctuating.
A.J. LeBlanc Heating diagnoses the whole pressure side, the tank, pressure switch, gauge, check valve, or pump, and replaces or repairs whatever is wrong.
Family-Owned in Southern NH Since 1928
Licensed NH Plumbers
All pressure tank, constant pressure pump, and city water booster work performed by licensed NH master and journeyman plumbers. Permits and inspections handled.
Same-Day Diagnosis
Most pressure tank failures get diagnosed the same day, with same-day or next-day replacement when the tank is in stock.
Top-Brand Tanks Only
Amtrol Well-X-Trol, Flexcon, and Pentek bladder and captive-air tanks. The brands that hold up in Southern NH water.
Readers' Choice Winner
Voted Best HVAC, Best Plumber, and Best Electrician in the Union Leader Readers' Choice Awards by Southern NH homeowners year after year.
Replacement, Diagnosis & Repair
New Pressure Tank Installation
When a bladder tank fails, or an older galvanized air-over-water tank has reached the end of its life, A.J. LeBlanc Heating sizes and installs the right replacement for your home, pump, and household demand.
- Amtrol Well-X-Trol, Flexcon, and Pentek bladder tanks
- Captive-air and traditional galvanized tank replacements
- Tank sized to your pump's GPM and household drawdown
- New pressure switch, gauge, and check valve when needed
- Pre-charge set to match your pressure switch (30/50, 40/60 PSI)
- Most replacements completed in a single visit
Waterlogged Tanks & Short-Cycling Pumps
Short-cycling, fluctuating pressure, or water at the air valve usually means the tank's bladder has failed or the pre-charge is off. We diagnose the entire pressure side before quoting a fix.
- Waterlogged tank diagnosis (bladder failure vs. air loss)
- Short-cycling well pump diagnosis
- Pressure switch testing and replacement
- Pre-charge pressure adjustment and air recharge
- Pressure gauge and check valve replacement
- Pump and wiring inspection above ground
Constant Pressure Pumps & City Water Boosters
For homes that need steady 50-60 PSI no matter how many fixtures are running, A.J. LeBlanc Heating installs in-home variable-speed constant pressure and booster pumps for low or fluctuating pressure on well or city water. Great fit for two-story homes, irrigation, end-of-line city water, and any house where the shower drops when someone flushes.
- In-home variable-speed constant pressure booster pumps
- City water booster pumps for low or fluctuating municipal pressure
- Small expansion tank and pressure controller included
- Steady 50-60 PSI throughout the home
- Sized to household demand, fixture count, and incoming flow
- Permitted and inspected when required
Recent Pressure Tank & Pump Installations
Pressure Tank & Constant Pressure Pump FAQ
How do I know my well pressure tank is bad?
Common signs include the well pump cycling on and off rapidly (short-cycling), low or fluctuating water pressure, water at the air valve on top of the tank, rust streaks on the outside, or a tank that feels heavy and waterlogged when tapped. Any of these usually means the bladder has failed or the pre-charge pressure is wrong.
How long does a well pressure tank last in Southern NH?
A quality bladder tank like an Amtrol Well-X-Trol or Flexcon typically lasts 10 to 15 years in Southern NH, depending on water chemistry, pre-charge maintenance, and pump cycling. Older galvanized air-over-water tanks usually need replacement sooner.
What size well pressure tank do I need?
The right tank size depends on your well pump's GPM rating, household demand, and the pressure switch setting (typically 30/50 or 40/60 PSI). A.J. LeBlanc Heating sizes each replacement so the pump runs full cycles, which extends pump life and keeps water pressure steady at every fixture.
Can a waterlogged pressure tank be repaired?
In rare cases the pre-charge can be reset with a tire gauge and air pump. Most of the time a waterlogged tank means the internal bladder has ruptured, and replacement is more cost-effective than repair. We diagnose the cause and give you a written quote before any work.
Do you service the well pump along with the tank?
Yes. A.J. LeBlanc Heating handles the whole pressure side of the well system, including the tank, pressure switch, pressure gauge, check valve, and pump wiring. If the submersible pump itself has failed, we coordinate with a licensed well drilling contractor for the pump pull and replacement.
What brands of pressure tanks do you install?
We install Amtrol Well-X-Trol, Flexcon, and Pentek bladder and captive-air pressure tanks throughout Southern NH. Tank selection is based on pump GPM, drawdown requirements, and the available space in the mechanical room.
What is a constant pressure pump and do I need one?
A constant pressure pump is a variable-speed pump, installed inside the home, that ramps up and down to hold a steady 50 to 60 PSI no matter how much water is being used. Standard well pumps run on a pressure switch that swings between 30 and 50 (or 40 and 60) PSI, which you feel as fluctuating pressure in the shower or at fixtures. Constant pressure is worth it for larger homes, two-story houses, irrigation, and homes where multiple fixtures run at the same time.
Can you install a booster pump on city water?
Yes. Homes at the end of a city water line, on a hill, or with multiple stories often see low or fluctuating municipal pressure. A.J. LeBlanc Heating installs city water booster pumps with a small expansion tank and pressure controller that bring incoming pressure up to a steady 50 to 60 PSI throughout the home. We size each system to household demand and the existing service line.
Get a Free Pressure System Estimate
A licensed NH plumber diagnoses the pressure side, sizes the right tank for your pump, and provides a written quote before any work begins.
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Contact Information
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Evenings & Weekends: Emergency Service
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