HVAC Service in Easton, PA
Heating, cooling and ductless retrofits in the oldest housing stock in the Lehigh Valley
Easton has the oldest housing stock in the region, and it is not close. 63.3 percent of the city’s homes were built before 1940, and 85 percent predate 1970. The share is high enough that the Census cannot report a median year built for Easton at all: too much of the stock sits in its bottom category, 1939 or earlier.
Easton also has the highest gas share in the region, at 58 percent of households, with about 30 percent on electricity and only 8.6 percent on oil. The conversation here is rarely about fuel. It is about getting modern equipment into a building finished long before central air or ducted heat.
In Easton the limit is almost never the equipment. It is the ductwork you do not have and the electrical service you already do.
What 63 percent pre-1940 looks like block by block
The districts are old in different ways, and the constraint changes with each.
How the districts differ
- Downtown: brick and stone buildings with upper-floor apartments, deep plans and almost no exterior space, inside the historic Downtown District.
- College Hill: larger singles near Lafayette College on original radiator systems, with third floors finished long after the house was built.
- South Side: a separate borough until 1898, with its own dense pattern of twins and rowhomes on tight lots.
- West Ward: closely spaced rowhomes and twins where a full duct system was never part of the design.
Cooling a house that never had ducts
Most of Easton predates forced air, so cooling here is a retrofit into a house with no chase, no plenum and nowhere to hide a trunk line. Three answers are honest, and the house picks one.
Three ways cooling gets into an Easton house
- Ductless mini splits: one outdoor unit, a head per zone, and a small wall penetration instead of a chase.
- High-velocity small duct: flexible tubing run through closets and wall cavities to small outlets, which suits a plaster house where trim and ceiling height matter.
- Conventional ductwork where there is somewhere to put it: a stacked closet, a back stair, a dropped section of basement ceiling.
- A room-by-room load calculation against 91 F summer and 8 F winter design conditions, so the air conditioning matches the house, not its square footage.
Radiators, boilers and the flue
Steam and hot water systems still heat a large share of the city, and they can be serviced or replaced without touching the cooling question. Boiler work and ductless cooling are two separate projects sharing a house.
Because 58 percent of Easton already burns gas, the flue problem here is usually not an oil conversion. It shows up when an old atmospheric appliance comes off the masonry chimney and a sealed-combustion gas or propane system vents through a sidewall instead. Sitting inside UGI territory is also not the same as having a main on your block; the no-cost service line extension reaches 150 feet from an existing main.
Electrical service is the real limit
Knob-and-tube-era houses were wired for lighting, and many Easton services were sized long before anyone imagined a compressor outside. A heat pump with electric backup draws real current, and if the panel has nothing left after a range, dryer and water heater, a service upgrade becomes part of the project. We look at the panel during the estimate rather than at rough-in, because that finding changes the budget and the schedule.
Stone-foundation basements and newly conditioned third floors change how moisture moves through an old house, which is where indoor air quality work such as dehumidification earns its place.
Frequently asked questions about HVAC work in Easton
My house has radiators and no ducts. How do I get air conditioning?
Two routes cover nearly all of it. Ductless mini splits need one small wall penetration per zone and no chase at all. A high-velocity small-duct system runs flexible tubing through closets and wall cavities. Either way, the radiators stay where they are.
Why does my electrical panel matter before I buy a heat pump?
Because a heat pump and its backup heat draw real current, and many Easton houses still run small services laid in during the knob-and-tube era. If nothing is left in the panel after the range, dryer and water heater, a service upgrade becomes part of the job.
I am replacing an old gas boiler. Will the chimney need work?
Often, and it is worth pricing up front. A sealed-combustion unit vents through a sidewall and leaves the masonry chimney behind. Whatever is still attached to it, usually the water heater, is then on a flue sized for two appliances and may not draft properly.
Do I need a permit for HVAC work in Easton?
Mechanical work in the city is handled by the Easton Bureau of Codes on the second floor of City Hall. Pennsylvania adopted the 2021 IRC and 2021 IECC on January 1, 2026, so installations are judged against that code. Confirm current forms and fees before scheduling.
Book HVAC service in Easton
Call Unity Heating & Air Conditioning at (267) 644-9516, or send the details through the contact page. We cover Easton from Macungie: repairs, maintenance, new installations and full system replacements, with emergency calls booked around the clock.
