Heating & Cooling First
HVAC Service & Repair in Bryn Mawr
PJ MAC HVAC Service & Repair is a full-service HVAC contractor โ 24-hour AC and heating repair, installation and maintenance come first, backed by NADCA-standard air duct and dryer vent cleaning.



When the air handler is running but the rooms never quite cool, or the furnace kicks on and off without ever settling the house, the symptoms tell a story before any panel comes off. PJ MAC HVAC Service & Repair handles those symptoms with 24-hour AC and heating repair in Haverford, PA, dispatched from our Bryn Mawr office. One call to (610) 424-6452 puts a technician on the trail of what your system is actually doing wrong.
Reading the Warning Signs on Your Cooling System
Warm air from the vents, a unit that runs nonstop, ice on the refrigerant lines, or a breaker that trips every afternoon are all symptoms with specific causes โ a refrigerant leak, a failing compressor, a tired capacitor, or a frozen evaporator coil. We diagnose Haverford air conditioners by tracing the symptom back to the part, not by guessing. We service every major brand, including Lennox, Carrier, Trane, and Goodman, so an unfamiliar logo on the condenser is never a reason to walk away.
When the Heat Behaves Strangely
Heating problems announce themselves too: a furnace that lights and quits, a boiler making noises it never used to, a heat pump that runs but blows cool, or the faint smell that means a combustion check is overdue. Because gas and oil furnaces carry real carbon-monoxide risk, we inspect heat exchangers and venting whenever the symptoms point that way. Whatever is heating your Haverford home, we repair it across gas furnaces, oil furnaces, boilers, and heat pumps.
Repair, Replace, or Tune Up
Some symptoms are a worn part; others are an aging system telling you it is near the end. When a Haverford repair starts to look like throwing good money after bad, we lay out the honest trade-off and offer free estimates on replacement equipment, including high-efficiency systems and ductless mini-splits. New installations carry manufacturer warranties on the equipment. There is no pressure to replace what can still be fixed.
Serving Haverford and the Surrounding Main Line
Haverford sits in the heart of the Main Line in Montgomery County, and our Bryn Mawr crew covers it alongside the nearby communities our neighbors share roads with.
- โBryn Mawr
- โRosemont
- โPenn Valley
- โNarbeth
- โArdmore
- โGladwyne
The Team Reading Your System's Symptoms
Family owned and operated with 32+ years of experience, led by owner Doug โ a Master HVAC Technician โ with EPA 608 certified technicians and PA License #PA157168 behind the work, and backed by a 5.0-star rating from 176 Google reviews, PJ MAC is the team Haverford keeps calling to read its systems right.
If your system is showing symptoms you don't like, don't wait for it to quit entirely. Call PJ MAC HVAC Service & Repair at (610) 424-6452 for 24/7 AC and heating repair in Haverford.
Areas We Serve from Bryn Mawr
- Bryn Mawr, PA
- Rosemont, PA
- Penn Valley, PA
- Narbeth, PA
- Ardmore, PA
- Gladwyne, PA
- Allgates, PA
- Miquon, PA
- Roseglen, PA
- Penn Wynne, PA
- Wynnewood, PA
- Connaughtown, PA
- Haverford, PA
- Lower Merion Township, PA
- Montgomery County, PA
Served by our local office: HVAC Repair in Bryn Mawr, PA
