Furnace Repair
Penn Mechanical Company — Furnace Repair That Puts Heat Back Fast
Cold weather should mean warm rooms, steady airflow, and quiet operation. When your furnace hesitates, cycles constantly, or costs more to run, something’s wrong. Typical furnaces deliver dependable service for about 12–15 years with routine care; as they age, wear, and airflow problems turn small warning signs into real headaches—chilly bedrooms, sleepless nights, and worries about safety.
Penn Mechanical Company focuses on furnace repair only (not heat pumps) in this service: we find the fault, explain it clearly, and fix it right—so heat is reliable again, without repeat visits.
Clear Signs Your Furnace Needs a Pro
- Takes forever to warm up,or never reaches the set point
- Short-cycling(starts and stops repeatedly) or the blower never shuts off
- New noises:banging on start-up, rattling, squealing, or grinding
- Persistent odorsbeyond the brief dust burn-off at first start
- Cool or weak airflowfrom some or all registers
- Error codeson the control board/thermostat or the pilot/ignition won’t stay lit
- Energy bills spikeeven though the weather hasn’t changed
Safety first: If you smell gas or a carbon-monoxide alarm sounds, leave the home and contact emergency services or your gas utility. When it’s safe, we’ll inspect and repair the furnace.
Quick Checks Before You Call (Sometimes It’s Simple)
- Set thermostat to Heatand raise it 3–5°.
- Replace the filterif it’s dirty or collapsed.
- Make sure the furnace switchis on and the breaker hasn’t tripped.
- Reseat the blower door(the safety switch must be depressed).
- Keep return/supply ventsunblocked; clear snow/leaves from intake/exhaust pipes on high-efficiency units.
If it still misbehaves, we’re ready.
Problems We Fix All the Time (Actual Furnace Issues)
- No ignition / burner won’t stay lit:hot-surface ignitor failure, dirty flame sensor, failed spark/pilot assembly, gas valve/control faults
- Burners light then shut down:pressure-switch or inducer problems, venting restrictions, weak flame signal
- Overheating / limit switch trips:clogged filter, blocked coil, closed registers, incorrect blower speed, undersized return air
- Weak or no airflow:failing blower motor or capacitor, loose wheel, control board issues
- Water around the furnace (90%+ units):cracked/blocked condensate trap or drain, leaking collector box
- Odd noises:bearings in the inducer/blower, unbalanced blower wheel, expanding ductwork
- Electrical faults:relays, capacitors, wiring connections, or the integrated furnace control (IFC)
If we find a heat-exchanger problem, we document it and discuss safe options—this is not a patch and hope situation
How We Diagnose (So the Repair Sticks)
- Recreate the symptomand pull stored fault codes
- Measure what matters:temperature rise, static pressure, motor amp draw, gas manifold pressure, and safeties
- Pinpoint the failed part or condition(not just the symptom)
- Explain your optionsand give a firm, up-front price before work begins
- Repair, retest, and verifyoperation and safety—then share simple prevention tips
Our trucks carry common OEM parts so most repairs finish in one visit.
What Your Visit Looks Like
- Respect for your home:floor protection and tidy work practices
- Clear communication:what we found, what we recommend, and why
- Code-compliant repair:installed to manufacturer specs, not shortcuts
- Proof of results:post-repair readings and a written summary for your records
Repair vs. Replace—An Honest Take
Repair is usually right for younger systems with a clean history. If your furnace is near 12–15 years, has recurring failures, or needs a major component (e.g., heat exchanger or control board), we’ll show you the numbers so you can choose: fix now or plan a replacement on your timeline. No pressure—just facts.
Frequently Asked Questions
Yes. We repair all major furnace brands.
We prioritize no-heat calls and aim to get to you quickly, even outside standard hours.
We follow manufacturer procedures and can provide documentation for warranty records.
Yes. If uneven rooms or dust are part of the problem, we can evaluate filtration and return-air sizing while we’re on site.
Ready to Get the Heat Back On?
Tell us what the furnace is doing (or not doing), include any error codes or noises you’ve noticed and we’ll schedule the earliest available repair window. Prefer to speak with a person? Call 484-877-8864 and we’ll line up the fastest, smartest next step.