HVAC Service in Macungie, PA

What the work here actually looks like

Macungie is a barbell. Nearly four in ten homes went up in the 1980s and another one in five predates 1940, with very little in between. Those two halves of town need completely different work.

• 1980s houses on electric heat. Baseboard, or a heat pump that went in when the house did and is now forty years old. This is the single biggest saving available to any homeowner in the borough.
• Victorians around South Church Street. Brick, plaster, no duct chase. Ductless heads add cooling without opening walls, and they add heat at the same time.
• About 160 households still on oil. Fewer than in Emmaus or Coopersburg, but the conversion arithmetic is the same and the savings are real.
• Air conditioning on 1980s ductwork. Most houses in the borough are on their second condenser, and a lot of those are R-22 units from the 2000s. Repair, tune-up or replace is a real decision here, not a script.
• Repairs, cleanings and tune-ups on whatever is already there. Not every call is a replacement, and I will say so when it is not.

Electric heat is the opportunity nobody talks about

Seven in ten Macungie homes heat with electricity. In a 1980s house that usually means baseboard resistance heat, which converts one unit of electricity into exactly one unit of heat. A cold-climate heat pump moves two to three units of heat for the same unit of electricity. Same meter, same wires, a fraction of the running cost.

There is a second group: houses that got a heat pump in the 1980s build-out and still have it. Equipment from that era runs at a seasonal efficiency roughly half of what current cold-climate equipment manages, and at forty years old it is well past the point where repair is the sensible call. Both cases are sized against a winter design temperature near 8 °F and about 5,800 heating degree days, from a load calculation on the actual house rather than a square-footage guess.

Air conditioning repair in Macungie

In a borough where seven in ten homes heat with electricity, the air conditioner is very often a heat pump running in reverse. That changes nothing about how a breakdown in July feels and a fair amount about how it gets fixed, because the outdoor unit I am looking at in summer is the same one that carries the house in January. The common failures are the same ones I see everywhere: a capacitor that has drifted out of tolerance, a contactor with pitted contacts, a condenser fan motor that has seized, a condensate drain that clogged and tripped the float switch, or a refrigerant leak at a flare fitting or in the evaporator coil.

What a repair visit involves: I find the actual fault rather than the symptom, tell you what it costs to fix, and tell you plainly whether it is worth fixing. A capacitor on a ten-year-old unit is an easy yes. A leaking evaporator coil on an R-22 system from 2006 usually is not, because the refrigerant alone can cost more than the repair is worth and the leak will be back. R-22 has not been made or imported in the United States since 2020, so what is left is reclaimed and priced accordingly. No-cooling calls are taken at any hour on (267) 644-9516.

AC installation and replacement

Very little of the borough’s original 1980s cooling is still running. Most houses are on their second condenser, and a large share of those went in during the 2000s and are now at the end of their own run. When one fails, the first question is whether a new outdoor unit can be paired with the existing indoor coil, and in 2026 the answer is almost always no. New equipment runs on R-454B or R-32, which do not mix with the R-410A or R-22 in an older system, and the indoor coil and metering device have to be rated for the new refrigerant, with the line set checked and flushed rather than assumed. A replacement here means a matched system, not half of one.

Sizing is where an installation goes right or wrong. Cooling is selected against a 91 °F summer design temperature from a room-by-room load calculation on your house, not from the square footage and not from whatever was there before. Oversized equipment short-cycles, never runs long enough to pull the humidity out, and leaves a tight 1980s townhouse clammy in July. On efficiency: the federal floor in Pennsylvania is 13.4 SEER2 for a straight air conditioner and 14.3 SEER2 for a heat pump. Spending above the floor pays back fastest on a two-stage or variable-speed unit that can run low and long, which is also what fixes the humidity. In a majority-electric borough the energy-efficient install is usually a heat pump rather than an air conditioner, because it takes over the heating bill at the same time. The same logic applies to the 2000s houses in Upper Macungie Township, which are covered on our Upper Macungie page.

Existing ductwork gets measured, not assumed. Total external static pressure on a 1980s duct system carrying a modern coil often sits above the half inch of water column the equipment is rated for, and when it does, the duct correction belongs in the quote rather than in a callback the following summer.

AC tune-ups, and what a real one includes

A tune-up that consists of a filter change and a squirt of refrigerant is not a tune-up. This is what an AC tune-up in Macungie covers, ideally in April or May before the first hot week:

• Outdoor coil washed from the inside out, and the pad checked for level, because a unit that has settled runs its compressor oil to one side.
• Refrigerant charge verified by superheat or subcooling against the manufacturer’s chart, not topped up by feel. If the charge is low there is a leak, and you are told that instead of sold a refill.
• Capacitor measured in microfarads against the rating on the can. Anything more than about six percent off gets flagged, because that is the part that fails on the hottest day of the year.
• Contactor, wiring and amp draw on the compressor and both fan motors, checked against the nameplate.
• Indoors: filter, blower wheel, evaporator coil condition, and the temperature split between return and supply air, which should land roughly between 16 and 22 degrees.
• Condensate drain flushed and the trap checked. On the many 1980s townhomes with the air handler in the attic, the float switch and secondary pan get tested, because they are what stands between a clogged drain and a ceiling.
• Thermostat operation and, on a heat pump, the reversing valve.

You get a written list of what was measured and what it read. If something is marginal I say so and give you the price, and you decide.

Heating tune-ups before the first cold night

Heating tune-ups are booked September through November, and the checklist depends on what is in the basement. On a heat pump, which is what most of this borough runs, it means verifying the defrost cycle, the reversing valve, the outdoor coil and fan, the charge against the heating-mode chart, and the auxiliary heat strips: the amp draw on each stage and the thermostat settings that decide when they come on. Strips running when they should not is one of the most common reasons a heat pump bill looks like a baseboard bill. On electric furnaces and baseboard it is elements, sequencers, connections and amp draw.

On the roughly 260 gas-heated households here the tune-up is burners, flame sensor, igniter, inducer and pressure switch, a look at the heat exchanger, the venting, and a combustion analysis done with a meter rather than by eye. On the 160 or so oil-heated households it is the annual cleaning: nozzle, filter and pump strainer replaced, electrodes set, heat exchanger brushed out, chimney base and flue checked, then a smoke test and combustion analysis to set the burner up for efficiency. Whatever the fuel, the point of the visit is that the first freezing night in December is not the first time the system runs at full load.

Furnace repair, and the heat pump equivalent

No-heat calls in Macungie split by fuel. On gas furnaces the usual suspects are a dirty flame sensor, a failed hot surface igniter, a pressure switch or inducer motor, a limit switch tripping on low airflow, or a control board. On oil it is a clogged nozzle, a failed cad cell or ignition transformer, a fuel pump, or a plugged filter after a dirty delivery. On heat pumps it is a defrost board, a contactor, a capacitor, an outdoor fan motor or a reversing valve solenoid, and on the coldest mornings, auxiliary strips that quietly failed weeks ago so the house cannot hold temperature.

I carry the parts that actually fail, and I diagnose before I quote. A furnace repair on a twelve-year-old system is normally straightforward. A cracked heat exchanger, a failed compressor or a second major repair in one season is a conversation about replacement instead, and I will show you the numbers rather than make the decision for you. No-heat calls are taken at any hour.

The borough runs its own water and sewer, but not its power

Macungie operates its own water and sewer off two wells. Electricity is PPL and gas is UGI, which matters because it means PPL rebates apply here — currently $225 for a mini split heat pump and $225 or $325 for a ducted air-source heat pump, depending on efficiency tier. Modest money, but it is real and it is claimable.

On gas: being inside UGI territory is not the same as having a main on your street. UGI extends a service line at no cost within 150 feet of an existing main, and past that the run is on the homeowner. Worth confirming before anyone plans a conversion around it.

Common questions about HVAC work in Macungie

You are actually in Macungie?

Yes. Unity is an HVAC company in Macungie in the literal sense: the business runs out of the borough, and Macungie is not a drive, it is home. Mobile service, so there is no showroom to visit — the van comes to you.

I have electric baseboard. Can I get a heat pump without rewiring the house?

Usually yes, and often the electrical work gets smaller rather than larger, because a heat pump draws far less than resistance heat. What decides it is the existing panel and service size. That gets checked before anything is quoted, not after.

My house is from 1890 and has radiators. Is cooling possible?

Yes, and the boiler stays exactly as it is. Radiator heat and cooling are separate systems. Ductless heads cover a zone each and need only a small penetration per room, so no plaster comes down.

How often should the air conditioning be serviced?

Once a year in spring for cooling and once in fall for heating. On a heat pump that is the same machine twice, which is not a con: the spring visit checks the charge and the coil under cooling load, and the fall visit checks the defrost cycle and the backup heat, and neither can be done properly in the other season.

Do I need a permit?

Yes. Mechanical permits are issued by Macungie Borough at 21 Locust Street, 610-966-2503. Pennsylvania moved to the 2021 IRC and 2021 IECC on 1 January 2026, so the work is judged against that code.

Book HVAC service in Macungie

Call Unity Heating & Air Conditioning at (267) 644-9516 to get on the schedule, or send details through the contact page. Repairs, cleanings, installations and replacements. Emergency calls are taken at any hour.