What actually failed
A waterlogged expansion tank, a stuck fill valve, or a worn relief valve can make a sound boiler look like it is failing. Those parts are tested before anyone recommends a new boiler.
Heating and hot-water boilers
Boiler Repair and Service in Mesa and Phoenix
Repair, maintain, and replace hot-water and heating boilers for Phoenix Valley homes and buildings: no heat or hot water, leaks, pressure problems, relief valves, expansion tanks, circulator pumps, and the piping around the boiler.
Watch for these signs
When to call about a boiler
- No heat, or no hot water from a boiler-fed system
- The pressure gauge reads high, low, or keeps changing
- The relief valve drips or discharges
- Water is leaking from the boiler, a fitting, or the piping
- Banging, gurgling, or kettling noises when it runs
- The boiler short-cycles or keeps locking out
- A circulator pump is noisy, hot, or not running
Our services
Boiler work we handle
- Boiler diagnosis and repair
- Relief valve, pressure-reducing (fill) valve, and gauge replacement
- Expansion tank checks, recharging, and replacement
- Circulator pump and zone valve repair
- Leak repair on boiler piping and fittings
- Scheduled maintenance visits with written records
- Boiler replacement planning
Your options
Repair or replace the boiler
We look at the cause, the condition of the existing system, and what will work best for your property.
The heat exchanger
A leaking or cracked heat exchanger usually ends the repair conversation. Most other parts, including pumps, valves, and controls, can be replaced.
Hard water and age
Scale on heating surfaces and in the piping lowers efficiency and raises temperatures. Age, parts availability, and the repair history decide whether one more repair is worth it.
Around the Valley
Arizona's boiler rules reach most commercial boilers
Arizona's boiler and pressure vessel rules (A.A.C. R20-5-401) apply to boilers, lined hot water heaters, and pressure vessels operated in the state. Boilers in private homes and in apartment complexes of not more than six units are exempt, as are small lined water heaters that stay within 200,000 BTU per hour, 210°F, and 120 gallons. If your building's boiler falls under the rules, keep its state inspection paperwork with the maintenance records.
Planning the work
What affects the price
- Boiler type, size, and fuel
- Which part failed and whether it is in stock
- Access to the mechanical room or closet
- Condition of the expansion tank, valves, and piping
- Whether water treatment or scale removal is part of the work
What happens next
How a boiler visit works
- 1
Tell us the boiler's make and model if you know it, what it serves, and what you are seeing.
- 2
We check pressure, temperature, the relief and fill valves, the expansion tank, and the pumps.
- 3
You get the cause, the repair, and any parts that are wearing out, with the price before work begins.
- 4
The repair is made and the system is brought back up to pressure and tested.
Common questions
Before you schedule
Do you work on residential boilers?
Yes. We repair and maintain boilers in homes as well as apartment buildings and commercial properties. Tell us whether it heats the home, makes hot water, or both.
Why does my boiler relief valve keep dripping?
Common causes are system pressure creeping up from a fill valve that will not shut, a waterlogged expansion tank, or a worn relief valve. Do not cap or plug the valve: it is the boiler's protection against overpressure.
What pressure should my boiler gauge read?
It depends on the boiler and the height of the building, so check the manufacturer's instructions or the label near the gauge. A reading that climbs when the boiler heats and falls when it cools often points to the expansion tank.
Can a boiler expansion tank be replaced without replacing the boiler?
Yes. The tank is a separate part. If it has lost its air charge or its bladder has failed, it can be recharged or replaced on its own.
Is boiler service available for emergencies?
For a leak or a boiler that has failed, call 480-663-2255. Emergency plumbing service is available 24/7, including nights, weekends, and holidays.
Related services
Related services and guides
Get help
Request boiler service
Tell us what is happening and our team will be in touch.