Pennsylvania homeowner guide

Main water shutoff

Pennsylvania's older housing stock (row homes in Philadelphia and Pittsburgh, older single-family in rural areas) often has water shutoffs in non-standard locations. In older homes, check the basement near the street-facing wall, under the kitchen sink, or in a crawl space. In Philadelphia row homes, the shutoff may be inside the basement near the front.

Electrical panel

Older Pennsylvania homes may have fuse boxes rather than breaker panels. Know what you have. Fuse boxes can handle modern loads if properly maintained but are a home insurance concern. Label all breakers/fuses. Sump pump circuit identification is critical.

Radon test: do this first

Pennsylvania has one of the most serious radon problems in the country, according to the state DEP. An estimated 40% of Pennsylvania homes tested exceed the 4 pCi/L EPA action level. Test the basement or lowest occupied level immediately upon moving in with a short-term charcoal canister test.

Heating system type

Pennsylvania's older homes use a wide variety of heating systems: natural gas, fuel oil, propane, electric heat, older steam radiator systems, and hot water baseboard. Know which you have and how to operate, reset, and maintain it. Steam radiator systems are common in Philadelphia and Pittsburgh row homes and require specific bleeding and maintenance procedures.

Philadelphia area (Zone 4A)

More moderate winters with significant summer humidity. A/C is essential. Heat pump systems are viable. Filter replacement every 30-45 days during pollen season (high oak and grass pollen).

Pittsburgh and western PA (Zone 5A)

Longer, colder winters with significant cloud cover (Pittsburgh averages only 59 sunny days per year, one of the lowest in the US). Gas forced-air heating is standard. Steam or hot water radiators in older homes.

Erie area (Zone 6A)

Lake effect snow belt, similar to NE Ohio and western Michigan. Heavy snowfall, significant winter heating load. Attic insulation and air sealing for ice dam prevention are critical.

Central PA mountains

Coldest part of the state. Extended heating season, significant freeze-thaw cycles, and rural areas with propane or fuel oil dependency.

Monthly: HVAC filter

Replace MERV-8 or higher filters every 30-45 days during heating season (October-April in most PA climates). Pennsylvania's air quality includes coal and industrial particulates in some western PA counties.

Monthly: radon monitor check

If you install an electronic radon monitor after initial testing, check it monthly. Radon levels fluctuate with barometric pressure and season; a sustained reading above 4 pCi/L warrants mitigation regardless of initial test results.

Quarterly: sump pump test

Pennsylvania's spring rain and snowmelt season (March-May) is intense. Test the pump quarterly with water poured into the pit.

Inspect roof after winter

Pennsylvania's nor'easters and freeze events are hard on roofing. Inspect flashing around chimneys (very common in PA's older stone and brick homes), skylights, and valleys. Look for lifted shingles from ice and wind events.

Pro recommended: Licensed Roofer

Test sump pump before April

Pennsylvania's spring rain period (March-May) is the peak flooding window. Western PA regularly floods from the Allegheny and Monongahela rivers. The Susquehanna River basin (central PA) has produced major floods (Agnes 1972, Ivan 2004, Lee 2011). Test the pump and battery backup in March.

Retest radon if not done

Spring is an ideal time to retest radon after the heavy heating season (closed-up house, low air exchange). If you haven't tested since moving in, do it now.

Inspect stone and brick foundations

Pennsylvania's older homes frequently have fieldstone or brick foundations. Inspect mortar joints in spring; winter freeze-thaw cycling deteriorates mortar progressively. Repoint joints before water infiltration causes further damage.

Basement humidity

Pennsylvania summers bring significant humidity (60-75% RH outdoors in July-August). Basements and crawl spaces in old stone homes can be very humid. Run dehumidifiers at 50% RH set point June through September.

Inspect older home systems

Summer is the best time to inspect and address deferred maintenance on older PA homes: check wood siding paint, repoint brick and stone, re-caulk windows, inspect roof flashing. Older Pennsylvania homes require more frequent exterior attention.

Clean A/C and central air

Hose down condenser coils in June and again in August. Philadelphia and Pittsburgh heat and humidity pushes A/C systems hard in July and August.

Service heating system in September

Pennsylvania's heating season starts in October. A September furnace, boiler, or steam system tune-up avoids the October rush. Steam radiator systems need annual service: bleeding radiators, checking water level, inspecting pressure relief valve.

Pro recommended: HVAC Technician

Lake effect prep (Erie area)

Erie, Crawford, and Mercer counties in NW Pennsylvania are in the Lake Erie snow belt. Prepare snow removal equipment, stock calcium chloride (not sodium chloride), and have attic insulation checked for ice dam prevention before November.

Winterize outdoor plumbing

Pennsylvania's first hard freeze varies: October in northern counties and the mountains, November in the south and Philadelphia area. Know your area and act before the date.

Clean gutters in November

Pennsylvania's dense hardwood forests drop heavily in October-November. Clean gutters after full leaf fall. Philadelphia's street trees drop late, sometimes into December.

Ice and snow management

Pennsylvania receives a wide range of winter precipitation types: snow in the north and mountains, mixed ice and snow in the center, and more rain/ice events in the south. Calcium chloride is the preferred deicer for concrete. Sodium chloride (rock salt) is the most common but damages concrete and vegetation.

Nor'easter preparation

Pennsylvania nor'easters (typically December through March) can drop 12-30 inches of snow in 24-36 hours. Stock 5-7 days of supplies and have snow removal equipment ready before December 1.

Steam radiator winterization

Steam radiator homes need specific winter attention: bleed radiators that trap air (gurgling sounds), maintain boiler water level, and check the pressuretrol setting (typically 0.5-2 PSI). A properly maintained steam system is extremely reliable; a neglected one breaks down on the coldest days.

Radon management in winter

Radon levels are typically highest in winter when homes are sealed and ventilation is reduced. If you don't have a mitigation system, check basement ventilation and consider a continuous electronic radon monitor to track winter levels.

The risk is real and statewide

EPA Zone 1 counties (>4 pCi/L expected average) cover 49 of Pennsylvania's 67 counties, including Chester, Montgomery, Berks, Bucks, Lancaster, Lebanon, Dauphin, Cumberland, York, Adams, Franklin, Fulton, Huntingdon, Centre, and many more. Only Philadelphia County is Zone 3 (low potential), and homes with elevated radon turn up in every zone, so test every home.

Testing protocol

Place a short-term charcoal canister in the basement or lowest occupied level for 2-7 days. Seal windows and doors during the test. Send to a lab (results in 1-2 weeks). Long-term alpha track detectors are more accurate over 90 days. The PA DEP has a list of certified testing labs.

Mitigation is highly effective

Sub-slab depressurization (a PVC pipe through the floor slab, a fan, and an exterior vent) reduces radon by 50-99% in virtually all Pennsylvania homes. Cost is $800-2,500. Retest after installation to confirm.

Pro recommended: Certified Radon Mitigation Contractor

Real estate transactions

Pennsylvania requires sellers to disclose known radon issues. Radon testing is standard in PA home inspections. If buying a home, request a radon test with results before closing, not as a contingency waiver.

Fieldstone and brick foundations

Pennsylvania has millions of homes with original fieldstone (pre-1900) or brick (pre-1950) foundations. These require mortar repointing every 15-25 years. Deteriorated mortar allows water infiltration which causes spalling and structural weakness. Do not apply surface waterproofing coatings over deteriorated mortar. Repoint first.

Lead paint

Pennsylvania's old housing stock has very high rates of lead paint; any home built before 1978, and most before 1940, should be tested if children are present or if renovating. The PA Department of Health has an EBL (Elevated Blood Lead) prevention program. Hire EPA-certified RRP contractors for any renovation disturbing old paint.

Asbestos

Pennsylvania's industrial heritage means asbestos is common in pipe wrap, floor tiles, ceiling tiles, and attic insulation (vermiculite) in homes built before 1980. Do not disturb suspected asbestos without testing. Have materials tested before any renovation.

Electrical updates

Many older PA homes still have knob-and-tube wiring (pre-1940) or aluminum wiring (1960s-1970s). Both require specific handling. Knob-and-tube should not have insulation installed over it (fire risk); aluminum wiring connections need anti-oxidant compound (AlumiConn connectors) at all junctions.

Susquehanna River system

The Susquehanna drains 27,500 square miles through central Pennsylvania. Major floods have impacted Harrisburg, Wilkes-Barre, and communities throughout the basin. The watershed's high relief and thin soils mean rain events translate to river rises quickly; 24-48 hour warning windows are common.

Allegheny and Monongahela (Pittsburgh area)

The Point in Pittsburgh has flooded catastrophically multiple times. Communities along the Allegheny (Oil City, Franklin, Kittanning) and Monongahela (Morgantown, Brownsville) experience periodic major floods. Know your flood zone and NWS Pittsburgh river forecast.

Flood insurance

PA flood zone properties require flood insurance as a mortgage condition. Properties outside mapped flood zones can and do flood; 25% of NFIP claims come from outside high-risk zones. Consider flood insurance even if not required.

Nor'easter characteristics

Nor'easters form along the East Coast and can bring 12-36 inches of heavy, wet snow to Pennsylvania in 24-36 hours. Eastern and central PA are particularly affected. Unlike Midwest blizzards (high wind, lower snow), nor'easters produce extreme snow loads on roofs and trees.

Roof snow load

Pennsylvania's wet, dense nor'easter snow is much heavier than Midwest powder, 20-30 lbs per cubic foot. On a flat or low-pitch roof or older structure, 24+ inches of wet snow can exceed design load. Have a roof rake and know when to use it (flat sections, skylights, additions).

Supplies

Stock 5-7 days of food, water, medications, and backup power before December. Philadelphia and Pittsburgh both have significant vulnerabilities to large nor'easters that shut down the region for 24-72 hours.

Power outage readiness

Pennsylvania's tree canopy is dense and nor'easters bring ice mixed with snow. Extended outages (3-5 days) are possible in rural areas. Generator safety rules apply: outside only, 20+ feet from windows.

Spring snowmelt and rain

Pennsylvania's mountains hold significant snowpack. Rapid spring warming plus heavy rain events (often from Gulf moisture surges) cause major floods in the Susquehanna, Delaware, Schuylkill, and western river systems.

Tropical storm remnants

Pennsylvania has been repeatedly flooded by the remnants of tropical systems: Agnes (1972), Ivan (2004), Lee (2011). These systems stall over the Appalachians and produce catastrophic rainfall. Monitor NWS forecasts for tropical storm tracks that affect PA.

Evacuation routes

Know your evacuation route from flood-prone areas before a rain event. Many PA river valley routes are single-road communities. Drive your alternate route in dry weather.

Erie snow belt reality

Erie County, PA is in the Lake Erie snow belt and regularly receives 100-150 inches of snow per winter. Single lake effect events can drop 24-48 inches in localized areas. Erie's records include 65 inches in 5 days (2017) and 38 inches in 24 hours.

Preparation standards

Erie-area homeowners need a standard higher than most of the country: snow blower serviced and ready by October 31, attic ice dam prevention (R-49+ insulation, air-sealed), and 7+ days of emergency supplies before the first snow event.

Main shutoff: know its location before winter

In older PA homes, shutoffs can be in non-standard locations: under stairs, behind access panels, or in crawl spaces. Locate yours in October, not January. Shut it off immediately when a pipe bursts, then open all faucets.

Steam or hot water radiator system pipe burst

Steam and hot water systems have their own shutoffs at the boiler. Know where the boiler shutoff is and how to drain the system. A burst radiator pipe can release scalding water or steam. Stay clear and shut off the boiler immediately.

Documentation and drying

Photograph all damage before cleanup. Pennsylvania's humidity means mold follows quickly. Get fans and dehumidifiers running within 24 hours.

Power and water safety first

Do not enter a flooded basement with electrical equipment submerged. Contact PECO, PPL, West Penn Power, or your local utility to disconnect power at the meter before entry.

Pump and dry immediately

Use a submersible pump to remove water. Start fans and a high-capacity dehumidifier immediately after water is removed. PA basement mold from flood events is a persistent problem; aggressive early drying is the key.

Historic flood documentation

In a known flood-prone area, document your flooding for FEMA records. Repeated flood claims may make you eligible for FEMA acquisition (buyout) programs if flooding is chronic.

Generator safety

Never run inside, in the garage, or near windows. CO deaths during PA nor'easters occur every year. Run outside with 20 feet of clearance from any opening.

Steam radiator system without power

Steam boilers with electronic ignition fail without power. Know how to manually re-light if your boiler has a standing pilot (older systems). If no backup heat, follow pipe freeze protocol: open cabinets, let faucets drip, drain system if outage will be extended.

Food safety

Refrigerator safe 4 hours closed; full freezer safe 48 hours. Pennsylvania nor'easters can last 24-36 hours; freezer contents are likely safe; refrigerator contents are at risk after 4-8 hours.

Philadelphia Gas Works, Peoples Gas, UGI

Know which gas utility serves your area and their emergency number. Philadelphia: PGW 1-215-235-1212. Pittsburgh area: Peoples Gas 1-800-400-9473. Most areas: call 911 first.

Actions

Smell of rotten eggs: do not operate any switch. Leave immediately, leave door open, call from outside. Do not re-enter until the utility or fire department clears the building.

Philadelphia and Pittsburgh row homes: shared walls are the key variable

In a row home, fire can travel through shared wall penetrations, common attic spaces, and party walls between units. Your neighbor's fire can reach you faster than a fire in a detached home. If you smell smoke with no apparent cause, take it seriously and check with neighbors before dismissing it.

Two exits from every room

Walk every room. Identify the door and an alternate window or exit. In PA's many multi-story row homes and older single-family houses, upper-floor window exits may require a portable escape ladder. Know which windows are accessible and which are painted shut. Keep an escape ladder near the bedroom on upper floors.

Designate a meeting place outside

On a row home block, 'outside' can be ambiguous. Designate a specific address (the corner, the phone pole at the end of the block) where all household members meet. Emergency vehicles need to identify who is accounted for and who may still be inside.

Steam heat and chimney fires

PA's large stock of steam-heat homes and older coal-converted boilers have chimney and flue fire risks. A chimney fire (roaring sound from the flue or fireplace) requires immediate evacuation and 911 call. Close any fireplace dampers but do not open the firebox. Do not use the heating system until a CSIA technician has inspected the flue.

Pro recommended: Certified Chimney Sweep

Crawl low under smoke

Stay within 12-18 inches of the floor; that's where breathable air lasts longest. PA's older homes, especially pre-1940 construction, have wood lath walls and original wood floors that ignite and spread fire rapidly. The smoke layer drops fast. Don't stand up to navigate.

Call 911 from outside

Evacuate first, then call. Philadelphia, Pittsburgh, Allentown, and other PA cities have fast response times (4-6 minutes), but you need to be outside and at a safe distance when they arrive.

Never re-enter

No pet, no document, no irreplaceable item. PA fire departments conduct primary and secondary searches for both people and pets; they have breathing equipment. You have seconds of safe air in a burning building.

Practice twice a year

Walk the full plan with all household members including older residents. Pennsylvania's row home stock and older housing means fire spreads differently than in modern construction. Practice includes the window exit, the escape ladder if applicable, and the meeting place.