A total loss of heat in a Pittsburgh winter is an emergency, plain and simple. Beyond the discomfort, an unheated home risks frozen and burst pipes that cause thousands in water damage, and a cold house is genuinely dangerous for infants, older adults, and anyone with health conditions. Werth-Aire treats no-heat calls as the priority they are, 24/7.
No-heat can come from a furnace or a boiler, and the causes range from simple to serious: a tripped safety, a failed igniter or flame sensor, a bad gas valve, a stuck circulator on a boiler, a faulty control board, a clogged condensate line locking out a high-efficiency furnace, or a thermostat problem. We diagnose the actual fault fast, carry common parts, and quote flat-rate before we start.
While you wait, keep the heat request simple and safe: confirm the thermostat is set to heat and calling, check that the filter is not completely clogged, and make sure nothing has tripped the furnace switch or breaker. Do not repeatedly reset a system that keeps locking out, and if you smell gas or suspect carbon monoxide, leave and call 911 first.
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Safety first. A no-heat furnace or boiler is still a combustion appliance. If the failure comes with a gas smell, soot, or a carbon-monoxide alarm, do not try to restart it — leave the home, call 911 or your gas utility from outside, and then call us. Restoring heat safely matters more than restoring it fast.
No heat? Do this first (safely)
Confirm the thermostat is calling
Set it to heat, a few degrees above the room reading, and replace dead batteries. A blank or mis-set thermostat is a common and harmless cause.
Check the switch, breaker, and filter
Make sure the furnace or boiler power switch is on and the breaker has not tripped (reset once only), and replace a completely clogged filter that can trip the high-limit safety.
Slow a pipe-freeze
While the heat is out in a hard freeze, open under-sink cabinets on exterior walls and let a faucet drip to reduce the risk of pipes bursting before we arrive.
Call — do not keep resetting
If it still will not run or keeps locking out, call (831) 461-3437 with the model, the symptom, and any code. Repeated resets can make the fault worse.
No-heat situations we respond to
- Furnace or boiler completely out with temperatures dropping
- The system starts then locks out on a safety
- The thermostat calls for heat but nothing responds
- A high-efficiency furnace tripping on a blocked condensate line
- A boiler running while radiators stay cold
- Heat lost overnight with pipes at risk of freezing
What our no-heat emergency repair covers
Furnace no-heat
Ignition, flame-sensing, gas-valve, control-board, and condensate lockouts that leave you cold.
Boiler no-heat
Circulator, control, pressure, and ignition faults on hot-water and steam systems.
Pipe-freeze prevention
Fast response to restore heat before an unheated home puts plumbing at risk.
Safety screening
Combustion and carbon-monoxide checks so heat is restored safely, not just quickly.
Our process
Priority dispatch
No-heat calls in freezing weather move to the front of the line, with an honest arrival window for your area.
Fast fault-finding
We diagnose the furnace or boiler failure quickly and carry the parts that most often cause no-heat.
Flat-rate repair
You get a written quote before we begin and a clear explanation of the after-hours fee.
Heat restored & verified
We confirm safe combustion and full heat delivery before we leave your home.
Why a no-heat home is a race against the cold
A total loss of heat in a Pittsburgh winter is an emergency because an unheated home can reach pipe-freezing temperatures within hours, and burst pipes cause thousands in water damage. That is why we treat no-heat as the priority it is, 24/7. No-heat can come from a furnace or a boiler, and the causes range from a tripped safety to a failed igniter, a bad gas valve, a stuck circulator, or a condensate lockout. While you wait, keep it simple and safe — confirm the thermostat is calling, check the filter and the furnace switch, and don't repeatedly reset a system that keeps locking out. For any gas or carbon-monoxide concern, leave and call 911 first.
What affects the cost
No-heat repairs are quoted flat-rate on site. What affects the cost:
- The failed component and whether it is stocked on the truck
- Furnace versus boiler and the complexity of the fault
- After-hours or holiday timing
- Any safety corrections needed to run the system
We prioritize protecting your home and pipes. The after-hours fee is explained before dispatch and the repair is quoted flat-rate before work starts.
| System | Common cause | Typical fix |
|---|---|---|
| Furnace | Igniter, flame sensor, filter lockout | Replace / clean the part |
| Furnace | Control board or gas valve | Diagnose and replace |
| Hot-water boiler | Stuck circulator, low pressure | Pump / pressure repair |
| Steam boiler | Low-water cutoff tripped | Feeder / cutoff service |
Repair or replace? Use the evidence
A no-heat call is not automatically a replacement conversation — most are an isolated part we can fix on the same visit. But if the unit is old and the failure is major, you deserve the honest repair-versus-replace math before you spend, not after.
When repair makes sense
- The fault is an igniter, flame sensor, capacitor, circulator, or safety lockout
- The heat exchanger is sound and combustion tests clean once the system is running
- The furnace or boiler is within its normal service life and otherwise reliable
- The repair restores safe operation without bypassing a safety control
When replacement deserves a look
- The heat exchanger or boiler block is cracked and cannot be made safe economically
- The furnace is 15+ years old (or the boiler 25+) and facing a costly repair
- No-heat lockouts keep recurring, or parts for the model are discontinued
- Efficiency has dropped and the heating bills climb every winter
If replacement is the smarter spend, compare a high-efficiency furnace installation line by line — sizing, permits, warranty, and startup testing — before you decide.
Why choose Werth-Aire for no-heat emergency repair
We treat no-heat as the emergency it is, because an unheated Pittsburgh home can reach pipe-freezing temperatures within hours — our job is to restore safe heat before that happens.
Serving Pittsburgh since 2015
11+ years keeping North Hills and Allegheny County homes comfortable through hard winters and humid summers.
4.9★ across 51 reviews
Local homeowners rate us for straight answers, clean work, and pricing with no surprises.
Licensed, insured & EPA-certified
EPA Section 608 technicians installing to ACCA Manual J/S/D standards, with the proper Pittsburgh permits pulled on every install.
Flat-rate pricing, 24/7 response
A written quote before we start, the diagnostic fee explained up front, and around-the-clock help when it can’t wait.
No-Heat Emergency Repair across Pittsburgh & the North Hills
From our base on the Perry Highway corridor, we bring no-heat emergency repair to homes across Allegheny County and Western Pennsylvania. That includes Ross Township, McCandless, West View, Bellevue, Avalon, and Shaler Township, plus the South Hills, the river boroughs, and the wider metro. See every community on our HVAC service areas page, or call (831) 461-3437 to confirm we cover your street.
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Related reading
- Furnace Won't Turn On in Winter? Do This First — A furnace that won’t start on a cold Pittsburgh night is stressful. Here are the safe checks to run first — and the moment to stop and call for help.
- Boiler No Heat? Emergency Steps for Pittsburgh Homes — A boiler that quits leaves radiators cold and pipes at risk. Here are the safe things to check on a hot-water or steam system before calling for help.