HVAC Service in Trexlertown, PA

What the work here actually looks like

Trexlertown’s housing is 62 percent post-2000 and only 17 percent detached single-family. The rest is townhomes, garden apartments and mid-size buildings. That shapes the service call.

• Landlord and property-manager service. Fall furnace checks and spring cooling checks across a building or a block of units on one visit, with a written condition note per unit so the owner knows which systems are next.
• Gas furnace repair and replacement. The 2004-vintage 80 percent furnaces are at the age where inducer motors, igniters and control boards go, and where a cracked heat exchanger is found on a cleaning. On a unit that age the honest conversation is repair cost against a new high-efficiency gas furnace.
• Air conditioning in matched pairs. A condenser and coil installed together in 2004 age together. Replacing one half rarely lasts, so full system replacement is on the table more often here than in older towns.
• Tenant turnover work. Filter, coil and drain checks between tenants, and a look at the thermostat wiring the last tenant left behind.

Twenty years old, all at once

A third of Trexlertown’s housing went up between 2000 and 2009. Equipment picked during a fast build-out was chosen for first cost, sized by rule of thumb and installed by whoever the builder had that week. Twenty years on, the failure pattern is predictable: compressors that will not start in July, evaporator coils losing charge, and furnaces that trip on limit because the return was never big enough.

For an owner with more than one unit, the useful thing is a schedule rather than a series of emergencies. Replacement gets planned the spring before a compressor fails, the equipment gets sized from a load calculation against 91 °F summer and 8 °F winter design conditions rather than copied off the old nameplate, and identical units get identical equipment so the parts and the filters match.

Venting, condensate and the things that fail a rental inspection

A high-efficiency gas furnace vents in PVC through the sidewall and produces condensate that has to reach a drain. In a townhouse or a garden apartment the drain is often a floor sink shared with the water heater, and the neutralizer and the trap get forgotten. A blocked condensate line is the most common no-heat call on modern gas equipment, and it is cheap to prevent on a maintenance visit. Combustion is set with an analyzer, not by eye, and carbon monoxide alarms get checked while the panel is off.

Where a building has a shared mechanical room or rooftop equipment, coordination with the property manager comes before the truck rolls. The work is the same; the paperwork is not.

Common questions about HVAC work in Trexlertown

I own several units. Can you service them on one visit?

Yes, and it is the cheapest way to do it. Cleanings and inspections are batched by building, with a short written note per unit. Replacement quotes across multiple identical units come as one plan, not one surprise at a time.

My furnace is from 2004 and the repair is expensive. Replace it?

At that age, if the repair is a heat exchanger, an inducer plus a board, or anything over a third of a new furnace, replacement usually wins, and the matching air conditioner is probably close behind. We price both paths and tell you which one we would pick for our own building.

Who handles permits in Trexlertown?

Trexlertown is part of Upper Macungie Township. The Permit Department is at 7540 Windsor Drive, Suite 311, Allentown, (610) 395-4892, and it has a specific HVAC Replacement/Alteration application. Pennsylvania moved to the 2021 IRC and 2021 IECC on 1 January 2026.

Do heat pumps make sense on gas?

Sometimes. Gas is the cheapest heating fuel per BTU here, so a heat pump is not automatically a saving on a gas house. Where it wins is when the air conditioner needs replacing anyway: a heat pump costs little more than a straight AC, carries the shoulder seasons on electricity and leaves the gas furnace for the coldest weeks. PPL rebates apply.

Book HVAC service in Trexlertown

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 run out of Macungie. Emergency calls are taken at any hour.