Independent chimney guide for Philadelphia homeowners · not a contractor · if you ask, we refer you to one local contractor who may pay us · how this works

Service guide

Furnace, boiler & water heater flues

If your house has gas or oil heat, the chimney may be venting the furnace, boiler or water heater. That flue matters most when you replace the appliance.

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Why the flue matters

L&I’s clearance sheet says chimney and vent rules exist to “ensure proper exhaust to avoid any backdraft that may increase levels of carbon monoxide or reduce the efficiency of a product.” A cracked, blocked or wrongly sized flue can do exactly that.

When you replace an appliance

CSIA says adding a new heating appliance or changing fuel type calls for a Level II inspection.
HomeGuide lists “converted fireplace needs a different type of liner” and appliance changes among common reasons to reline, and notes aluminum liners are only for gas appliances.
L&I lists permit fees for heating appliances: in one- and two-family homes, $69 per warm-air or direct-vent heating apparatus connected to a flue or chimney, $69 per appliance submitted separately, and 2% of contract value (minimum $189) for fuel gas work, plus a $100 filing fee credited toward the permit.

Carbon monoxide alarms

Philadelphia’s Fire Code requires CO alarms in homes with fuel-burning appliances or an attached garage. In existing one- and two-family homes they don’t have to be hardwired or interconnected. See our CO guide.

Broken heater in winter?

Eligible low-income homeowners can call the City-supported Heater Hotline at (215) 568-7190 for free emergency heater repairs. More on programs.

References

Checked October 30, 2026. Codes, fees, programs and prices change; confirm with the source. Cost figures are published ranges, not quotes.

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We’re an independent guide, not a contractor. If you want help, we’ll pass your request to one local chimney contractor. If we don’t have one for your job yet, we’ll tell you. They may pay us for that referral; you never pay us anything. Who gets this: one independent Philadelphia chimney contractor, not a call list. We send them your name, phone, ZIP and what you write here, and they call or text you about this request only. If we don’t have a contractor for your job yet, we’ll tell you instead of passing it on. They may pay us for the referral. We don’t sell your details to lead brokers.

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If you smell gas, leave the house and call PGW at 215-235-1212 from outside. If a carbon monoxide alarm sounds or anyone feels sick, get everyone outside and call 911. Don’t use this form for emergencies.

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Tell us your ZIP code, what the chimney serves and what you’re seeing. We’ll pass it to one independent Philadelphia chimney contractor, who contacts you to set up an inspection and a written quote. If we don’t have one for your job yet, we’ll tell you.

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Philly Chimney Repair is an independent guide, not a chimney contractor. If you ask for help, we’ll pass your request to one independent Philadelphia chimney contractor, who inspects, quotes and does the work. If we don’t have one for your job yet, we’ll tell you. That contractor may pay us for the referral. We are not affiliated with the City of Philadelphia, L&I or PGW. Disclosure.