A comfortable home should be set it and forget it.When comfort slips, it rarely fails all at once. First, it’s a room that never quite settles, a faint rattle on start-up, or a musty puff when the A/C stops. Then the stakes rise: warm air in cooling mode, no heat at 6 a.m., a breaker that trips twice, or a pan full of water. You’re paying for runtime without getting results.
Penn Mechanical Company turns What’s wrong? into Here’s what failed, why it failed, and how we’ll fix it. We find the cause, explain it in plain language, and verify the repair with real measurements so the problem stays solved.
Minor annoyances are your system’s early warning. If you’re seeing two or more of the signs below, a repair visit is the smarter move than routine HVAC maintenance.
Before we roll a truck, a quick check can either restore operation or give us useful clues:
Repairs that last start with measurements, not hunches. We reproduce the symptom, pull stored faults, and then instrument the system.
Once the root cause is clear, you get a firm, up-front price. After the repair, we verify under load and document readings so you can see the improvement, not just feel it.
Cooling & Heat Pumps
When cooling is tepid, lines frost, or AUX heat runs constantly, we zero in on airflow, charge, and controls. Typical fixes include TXV/EEV and sensor issues, contactor/capacitor failures, outdoor-fan or blower motor replacements, defrost board faults, and charge corrections done by measurement—not guesswork.
Furnaces
No-heat or intermittent heat often traces to ignitors, flame sensors, gas pressure, or limit trips from poor airflow. We clean/tune the burner, set manifold pressure, correct blower settings, and prove temperature rise within the nameplate range.
Air Movement & Duct Faults
Hot/cold rooms, whistle, or rumble point to starved returns, crushed flex, leaky boots, or bad transitions. We correct the restriction or leak so the equipment can breathe.
Water Management
Overflowing pans, gurgling drains, or musty odor mean the trap isn’t primed, the line is clogged, or the float failed. We clear and treat the drain, test the switch, and set the system to dry the coil properly.
Thermostats & Controls
Won’t switch modes, random shutdowns, or constant AUX heat? We fix staging/balance-point settings, wiring faults, sensor placement, and app/Wi-Fi quirks so the controls cooperate with the equipment.
Usually low airflow, incorrect charge, or a defrost/control fault. We test all three and correct the root cause so the ice doesn’t return.
Often, a repairable setup issue blower speed, charge, or a bypass/leak in ductwork. We measure, adjust, and confirm the fix with a better temperature split and lower indoor humidity.
Yes. We’re brand-agnostic and comfortable with hybrid setups.
Most common repairs wrap the same visit. If specialty parts are needed, we stabilize the system and return promptly, explained up front.
We give a flat, transparent quote before work begins. Our vans are stocked with the parts that fail most frequently, so many fixes can be completed in a single visit. No-cool, no-heat, and water issues are treated as priority calls.
Would you prefer to spread the costs out for larger repairs or replacements? Ask about financing options on qualifying projects.
Tell us the symptoms: no cool, no heat, drips, ice, new noises, or an error code, and we’ll schedule the earliest slot with the right parts on the truck. Prefer to talk it through first? Call 484-877-8864, and a Penn Mechanical expert HVAC repair will help you choose the smartest next step.