
Steam · Hot water · Radiators · Heat pumps
24/7 Boiler Repair in Pittsburgh, PA
Dead boiler, cold radiators or pipes banging at night? Call and a real person answers, then sends an insured local boiler technician who gives you the price before any work starts.
Answering 24/7, nights, weekends and holidays
- Answering 24/7
- Insured local boiler technicians
- Price before work starts
What we repair
Boiler, radiator and heat pump services
Around half of Pittsburgh's houses were built before 1940, and most of them still heat with a boiler and cast iron radiators. Every service below is built around those systems.
Radiator Repair
Cold rooms, leaking valves, spitting vents and radiators that bang at dawn. A local technician sorts out steam and hot-water radiators in pre-war Pittsburgh homes: vents sized to the run, traps rebuilt, valves repacked, unions resealed, and radiators pulled and reset with the right pitch during renovations.
Radiator Repair detailsSteam Boiler Repair
Steam is its own trade. The technician we send works on one-pipe and two-pipe systems in Pittsburgh's older homes: low-water cutoffs and feeders, pressuretrols and clogged pigtails, main vents, wet returns, Hartford loops and the near-boiler piping that causes most banging, wet steam and water loss.
Steam Boilers detailsHot Water Boiler Repair
Hot boiler, cold radiators? Relief valve dripping on the floor? The technician we send repairs hydronic systems in Pittsburgh homes: circulators, zone valves, diaphragm and old steel expansion tanks, fill valves, aquastats, ignition faults, kettling, and the gravity systems that were converted to pumps decades ago.
Hot Water Boilers detailsBoiler Replacement
New steam and hot-water boilers for Pittsburgh homes, sized to the radiators you already have. Steam boilers are matched to the connected radiation and piped the way the manufacturer requires; hot-water systems can move to cast iron, condensing or combi boilers. Chimney liners, oil-to-gas conversions and a price before work starts.
Boiler Replacement detailsHeat Pump and Mini-Split Repair
Repair for ductless mini-splits and central heat pumps in Pittsburgh homes, including the radiator houses that added mini-splits for cooling. Units that will not heat, ice over, leak water or flash error codes are diagnosed on site: defrost faults, refrigerant leaks, clogged drains, communication errors and failed reversing valves, with a price before work.
Heat Pump Repair detailsEmergency Boiler Repair (24/7)
A boiler that quits on a freezing night needs a person on the phone, not a voicemail. Calls are answered 24/7, and we send the nearest available technician to dead boilers, leaks, discharging relief valves, low-water lockouts and failed circulators across Pittsburgh. You get the price before any work starts.
Emergency Repair detailsForced-air furnace instead of radiators? Our sister site Pittsburgh Furnace Repair takes those calls.
The first 30 minutes
What to do when the boiler stops, leaks or smells wrong
Boiler repair in Pittsburgh starts with safety triage, system testing and a written repair plan. Before anyone touches the boiler, work out which of these three situations you are in. Each one has a different first move.
Gas smell, a CO alarm, or CO symptoms
Leave first. Call second.
- Get everyone out, pets included. Do not flip switches, relight a pilot or look for the leak.
- From outside, call 911 or your gas utility.
- Headache, dizziness, nausea or confusion that ease outdoors are warning signs even without an alarm.
- Call us once responders say the house is safe. We repair the boiler; we are not the first call for a leak.
Water on the floor or the pressure falling
Stay clear, document, then call.
- Keep people away from hot water, steam and anything electrical near the boiler.
- Photograph the pressure gauge, the leak and the boiler label before you mop up.
- Never cap or plug a dripping relief valve. It is doing its job.
- Tell the dispatcher if water is hot, spraying, or close to wiring, and ask how to keep pipes from freezing overnight.
No heat, and nothing looks unsafe
Four safe checks, then call.
- Is the thermostat set to heat and above room temperature? Check its batteries.
- Is the red-plate emergency switch at the basement stairs on, and the breaker reset?
- Read the pressure gauge, or the water level in a steam boiler's sight glass, and note any error code.
- Press reset once at most. Do not open the cabinet, and never heat the house with the oven or a grill.
The no-heat checks are explained step by step in boiler not firing? what to check before you call. If the house will sit without heat on a freezing night, our 24/7 emergency boiler repair page covers keeping radiators and pipes from freezing while you wait.
Local experience
Boiler and radiator problems we see in Pittsburgh homes
Pittsburgh's median house was built around 1942, and close to half the city's homes are older than that. Squirrel Hill foursquares, Bloomfield and Lawrenceville rowhouses, Shadyside Victorians cut into apartments: most were built with steam or gravity hot water, and many still run on it. With roughly 5,829 heating degree days a year, Allegheny County works those systems hard from October to April. These are the calls that come in every winter.
One-pipe steam in pre-war houses and rowhouses
One pipe feeds each radiator and carries the condensate back, so everything depends on pitch, working air vents and a boiler piped the way the manufacturer drew it. A stuck vent means a cold room. A half-closed radiator valve means spitting and banging. Low water trips the cutoff and the house goes cold. See steam boiler repair for what gets checked.
Gravity hot-water systems converted to pumps
Many East End houses started with big-pipe gravity systems and an open expansion tank in the attic. Decades later they have a circulator, a sealed tank and a fill valve bolted on, and every piece of that conversion can fail. Low pressure, air-bound radiators upstairs and a dripping relief valve usually trace back to it. Our hot water boiler repair page covers the parts involved.
Banging pipes and cold rooms
Water hammer in steam pipes is almost always trapped condensate: a sagging main, a radiator tipped the wrong way, wet steam from dirty water. In hot-water homes the noise is more often air or a boiler kettling. Both are fixable without replacing the boiler, and our radiator repair technicians start there.
Boilers venting into old chimneys
A new boiler that runs cooler than the old one can leave an unlined masonry chimney wet and crumbling. When a boiler is replaced, the chimney liner and the water heater sharing that flue are part of the job, not an afterthought.
Ductless heat pumps added for cooling
Radiator homes have no ducts, so ductless mini-splits are how most of them got air conditioning. Those units now carry part of the heating load in spring and fall, and they need heat pump repair when they ice over or leak.

Smell gas or hear a CO alarm?
Leave the house and call 911 or your gas utility from outside first. Call us once responders say the house is safe. We repair boilers; we are not the first call for a suspected gas leak.
Symptoms and causes
Pittsburgh boiler problems we diagnose
A symptom rarely names the failed part on its own. A cold radiator can be a vent, a valve or a circulator; water on the floor can be a relief valve doing its job. Use this table to describe what you see when you call. It is a starting point, not a diagnosis, which takes a technician testing the boiler and the radiators together.
| What you notice | Common causes | What to do now | When to call |
|---|---|---|---|
| No heat anywhere in the house | Thermostat not calling, tripped emergency switch, low-water cutoff, ignition lockout, failed circulator | Run the safe checks above; note the gauge or sight glass and any error code | Right away in freezing weather or with anyone vulnerable at home |
| One radiator or one zone cold | Stuck air vent (steam), air-bound radiator (hot water), half-closed valve, failed zone valve | Confirm a one-pipe steam valve is fully open; note which rooms are cold | This week; sooner if the radiator is on an outside wall |
| Banging or hammering pipes | Condensate trapped by poor pitch or sagging pipes, wet steam, kettling in a hot-water boiler | Note when it happens: start-up, mid-cycle or shutdown | Book a visit; it rarely fixes itself |
| Water around the boiler, pressure dropping | Relief valve discharging, waterlogged expansion tank, leaking circulator flange or fitting, cracked section | Stay clear of wiring, photograph it, never cap the relief valve | Same day; now if water is spraying or near electrical parts |
| Pressure climbing toward 30 psi | Waterlogged expansion tank, fill valve letting city pressure through, control fault | Note the cold and hot readings | Same day, before the relief valve opens |
| Short cycling or rooms that never warm up | Pressuretrol set too high, clogged pigtail, oversized boiler, failing control | Note how long the burner runs between stops | Schedule a diagnostic visit |
| Gas smell, CO alarm, soot or flame rolling out | Combustion or venting problem | Leave and call 911 or the gas utility from outside | After responders clear the house |
Steam and hot-water systems fail in different ways, so start with steam boiler repair, hot water boiler repair or radiator repair for the detail on each.
How it works
From the phone call to heat in the radiators
- 1
You call, a person answers
Day or night, someone picks up and asks the questions that matter: steam or hot water, what the gauge reads, which rooms are cold, whether anything is leaking.
- 2
We dispatch a local technician
The nearest available insured boiler technician is sent with your notes, so they arrive knowing the system type and the symptom.
- 3
Diagnosis, then the price
The technician tests the boiler and the radiators, explains what failed and gives you the price. Nothing starts until you approve it.
- 4
Fixed, tested, explained
The repair is made, the system is run through a full heating cycle, and you hear what was done and what to watch for.
What a complete boiler service visit covers
- 1Confirm the symptom, the fuel (gas or oil) and the system: steam, hot water, condensing, radiators or baseboard.
- 2Inspect the boiler and the distribution together: piping, valves, vents, traps and the radiators themselves.
- 3Check operating pressure and temperature, the relief valve, expansion tank, low-water cutoff and other safety controls.
- 4Test combustion and venting on fuel-fired boilers, including the chimney or vent connection.
- 5Explain what failed and why, the repair options and any permit the job needs, with the price before work starts.
- 6Make the approved repair, run the system through a full heating cycle and confirm heat at the radiators.
Have this ready when you call
- Your address and neighborhood or borough
- The symptom: no heat, leak, noise, pressure, uneven rooms or a lockout light
- Gas or oil, and steam or hot water (describe the gauge and radiators if unsure)
- The gauge reading or sight-glass level and any error code
- Photos of the boiler label, gauge and any leak
- Any CO alarm, fuel odor, water near wiring, or someone at home who is vulnerable to cold
The label is usually on the cabinet or near the controls. You do not need to open the boiler to find it.
Costs and quotes
What boiler repair costs in Pittsburgh, and what a fair quote shows
The price depends on the part that failed, whether the system is steam or hot water, how easy the boiler is to reach, parts availability and whether the call is after hours. That is why the technician diagnoses first and gives you the price before any work starts.
For planning, published Pittsburgh estimates run from about $100 for a small part to about $3,025 for a major repair, with most ordinary repairs around $300 to $950. A full gas-boiler replacement in a typical row home or older house is estimated at about $6,500 to $13,000. These are published local benchmarks, not quotes for your house. The boiler repair cost guide breaks the repair range down by part, and the boiler replacement cost guide explains what moves a new boiler up or down.
A clear quote lists, line by line
- The diagnosis: what failed, why, and what was tested
- Parts, with the make and model, and the labor
- Testing after the repair, and any permit the job needs
- Any after-hours or holiday charge, stated up front
- The technician's parts and workmanship terms, in writing
Repair before replacement
A boiler's age alone does not prove it needs replacing. Plenty of cast iron boilers in Pittsburgh run well past 25 years with the right repairs. Ask for repair and replacement as separate written options.
Repair usually makes sense when
- The failed part is identified and available
- The boiler passes its safety and combustion checks
- The piping and radiators are still sound
- This is not the third major repair in a few seasons
Compare replacement seriously when
- A cast iron section or the heat exchanger is cracked
- Leaks or lockouts keep coming back
- Parts are obsolete or no longer made
- Safe operation cannot be restored at a sensible cost
When it is time, our boiler replacement page covers sizing a new boiler to the radiators, chimney liners and keeping the original cast iron.
Why call us
Why Pittsburgh homeowners call this line for boilers
Boilers and radiators are the whole focus
This line handles steam boilers, hot-water boilers, radiators and the ductless heat pumps added to radiator homes. Nothing else competes for the technician's attention.
Answered 24/7 by a person
Boilers fail at 2 a.m. in January. The phone is answered every hour of every day, holidays included, and the call is dispatched while you are still on the line.
A price before work starts
You hear what is wrong and what it costs before a wrench turns. If the honest answer is a small part, that is the recommendation.
Licensed where required, and insured
Every HVAC technician we send is licensed where Pennsylvania requires it, and insured.
Pittsburgh Boiler & Heating Repair connects you with independent local HVAC technicians who perform the work. Read more about how dispatch works.
Areas we serve
Boiler repair across Pittsburgh and the older boroughs
Every City of Pittsburgh neighborhood is covered, from Brookline and Beechview to Highland Park and Polish Hill. Beyond the city line, the service ring follows the pre-war housing: the streetcar suburbs and river boroughs 10 to 20 minutes out, where radiators are still the norm.
Customer reviews
What Pittsburgh homeowners say
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From the blog
Boiler and radiator guides

8 min read
Boiler Not Firing? What to Check Before You Call
Before you call about a boiler that will not fire, run five safe checks: thermostat, power switch, gas valve, water level or pressure, and lockout codes. Here is what each one tells you.
Read the guide →
8 min read
How Much Does Boiler Replacement Cost in Pittsburgh?
What published local estimates say a full boiler replacement costs in a Pittsburgh row home or older house, what that price covers, and why steam, chimneys, asbestos and condensing installs move it.
Read the guide →
7 min read
How Much Does Boiler Repair Cost in Pittsburgh?
Published Pittsburgh ranges for common boiler repairs, from ignitors and relief valves to circulators, expansion tanks and gas valves, and what makes one job cost more than another.
Read the guide →Boiler repair in Pittsburgh: common questions
Do you really answer boiler calls 24 hours a day?
Yes. The line at (321) 478-0693 is answered around the clock, including nights, weekends and holidays. A person takes the details of the boiler, the radiators and what is going wrong, then dispatches the nearest available local technician. We do not promise an arrival time on the website because tunnels, bridges, weather and the number of open calls all change it, so the dispatcher gives you a realistic estimate on the call.
Do you work on steam boilers as well as hot-water boilers?
Yes. A large share of Pittsburgh's pre-war houses still heat with one-pipe or two-pipe steam, and the rest of the older stock runs on hot water through cast iron radiators or baseboard. Tell the dispatcher which system you have, or describe the gauge and the radiators if you are not sure, so the technician arrives with the right parts. Our guide to steam boiler repair explains what we check.
How much does boiler repair cost in Pittsburgh?
It depends on the part that failed, the type of system, how easy the boiler is to reach and whether the call is after hours. A failed vent or a dirty pigtail is a small job; a circulator, a gas valve or a leaking section is a much bigger one. The technician diagnoses the boiler first, then gives you the price before any work starts, and nothing proceeds until you approve it. As a planning number, published Pittsburgh estimates put most ordinary boiler repairs at about $300 to $950; our boiler repair cost guide breaks that down by part.
Should I repair my old boiler or replace it?
Repair usually makes sense when the failed part is identifiable, parts are available and the boiler passes its safety checks. Replacement deserves a serious look when a cast iron section is cracked, leaks keep coming back, parts are obsolete, or the boiler has passed roughly 25 to 30 years and needs a major repair. Ask for both options in writing. Our boiler replacement page walks through the decision.
What should I do if I smell gas or my CO alarm goes off?
Leave the house right away and call 911 or your gas utility from outside. Do not flip switches, relight a pilot, or try to find the leak, and do not go back in until responders say it is safe. Once the gas utility or fire department has cleared the house, call us to repair the boiler. We are a repair service, not the first call for a suspected gas leak.
My house has vents and a furnace, not radiators. Can you help?
This site is dedicated to boilers, radiators and heat pumps. Homes with ductwork and a forced-air furnace are handled by our sister site, Pittsburgh Furnace Repair, which serves the same city. If you are not sure what you have, look in the basement: a boiler has pipes leaving the top and a pressure or steam gauge, while a furnace has large sheet-metal ducts.
Can I keep resetting a boiler that will not fire?
No. Pressing reset once, as the manufacturer's label allows, is fine. Pressing it again and again can flood the combustion chamber with gas or oil and turn a simple fault into a dangerous one. Do not remove covers or jump out a safety control. Write down any error code or blinking light, note the pressure gauge or the water level in the steam sight glass, and call. Those details usually point the technician straight to the failed part.
How can I tell whether my boiler is leaking or losing pressure?
On a hot-water boiler, watch the gauge: it should read roughly 12 to 15 psi cold and stay under about 25 psi hot. A reading that keeps dropping, or water at the relief valve, expansion tank, circulator or fittings, points to a leak or a failing part. On a steam boiler, a sight glass that empties quickly or a feeder that runs constantly means water is escaping. Water on the floor does not prove the boiler itself has failed. Keep clear of hot water and electrical parts, photograph the gauge and the leak, and never cap a dripping relief valve.
Does homeowners insurance cover a leaking boiler?
Not automatically. Coverage depends on your policy and the cause: sudden water damage is often treated differently from a boiler that wore out. Photograph the leak and any damage before cleanup when it is safe, keep the technician's invoice and findings, and ask your insurer what documentation it wants. A home warranty is a separate contract with its own limits and approved contractors, so check it before you book.
Does boiler work in Pittsburgh need a license or a permit?
Usually, for anything beyond a small repair. Pennsylvania has no statewide HVAC license, but the City of Pittsburgh licenses mechanical contractors through its Department of Permits, Licenses and Inspections, and boiler replacements and major alterations normally need a permit there or from your borough. The state boiler inspection law is aimed mainly at commercial buildings and larger apartment buildings, not single-family homes. The technician we send pulls any permit the job needs and can show you their license and insurance details.
How often should a boiler be serviced in Pittsburgh?
Once a year, ideally in late summer or early fall before the heating rush starts. EPA guidance recommends an annual inspection of fuel-fired heating equipment and its chimney or vent. A steam boiler visit covers the low-water cutoff, sight glass, pigtail, pressuretrol and vents; a hot-water visit covers pressure, the expansion tank, relief valve and circulator, plus combustion and venting on both. Our annual boiler service checklist lists every item.
Boiler down? Radiators cold?
Open 24 hours, 7 days a week. A person answers and dispatches right away.
Call first for anything urgent
Not urgent? Send a request
For the fastest help, call (321) 478-0693. Use the form for annual service, a replacement quote or a repair that can wait a day, and we will call you back to schedule.
(321) 478-0693Pittsburgh Boiler & Heating Repair
Serving Pittsburgh, PA 15222 and nearby areas
Open 24 hours, 7 days a week
