White colonial houses with lit windows photographed at dusk along a tree-lined residential street.

Mini Split Installation in Scranton, PA

Tell us about the job

Takes about a minute. No obligation.

Step 1 of 3: Equipment

Gas heats 64.2% of homes in Lackawanna County, more than any other fuel. A mini split works differently. It doesn't replace that furnace so much as take over the rooms it struggles with, a finished attic, a converted garage, an addition that never got its own duct run. Electricity already heats 18.6% of homes here, so a system that runs on power alone isn't a stretch for this area. Some homeowners install one unit to handle a problem room, others use a multi-zone system to cover the whole house and leave the furnace as backup for the coldest stretch of winter.

9 months
September through May, your system heats
2 months
July through August, it cools
19°F
the average winter night it heats against
78°F
the average summer afternoon it cools against
Isometric illustration of a cutaway gray house with a dark shingled roof, showing two wall-mounted indoor air conditioning units connected by lines to an outdoor condenser unit on the ground outside.
Your system heats September through May and cools July through August.

NOAA nClimDiv, 1991–2020 normals

Lackawanna County logged 127 damaging wind events and 16 winter storms in the last ten years.

A mini split here doesn't need to plan around that. Standard sizing and efficiency hold up fine.

Two months of real cooling load, so the system doesn't need to be oversized to keep up

Cooling runs July through August
Summer afternoons average 78°F
127 damaging wind events from 2015 to 2024

A mini split doesn't need to be sized up for anything specific to this area. Pennsylvania homes paid 17.77 cents per kilowatthour in 2024, and that number is what actually decides what a unit costs to run, not the climate outside. A correctly sized unit will hold a room at temperature using less power than an oversized one cycling on and off. The contractor sizing the install will measure the room, check the windows and insulation, and match the unit to that, not to anything unusual about Scranton. Standard efficiency ratings are built for weather like this already.

A new mini split here has to meet zone 5A's efficiency minimums

Lackawanna County sits in climate zone 5A, a cool zone where heating carries the bigger load. A mini split counts as a split-system heat pump under federal rules. Units made from 2023 on have to hit 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. That's the floor for what a contractor can install here. A federal tax credit is available on top of that for systems that qualify.

Find a contractor
A beige split-system air conditioner outdoor condenser unit mounted on metal wall brackets atop a stucco wall.

Half these homes were built in 1955 or earlier

Half the homes in Lackawanna County were built in 1955 or earlier. A house that old wasn't built with ductwork sized for a heat pump. A lot of them have no ductwork at all outside whatever the furnace uses. A mini split works around that. The line set runs through a small hole drilled in the wall, not a chase cut into plaster and lath. The install has to fit the walls and rooms already there.

Sizing is a room by room calculation, not a rule of thumb

A contractor works out the load for each room by looking at its square footage, ceiling height, window area, insulation, and what's on the other side of each wall. A room with a lot of glass or one sitting over a garage loses heat faster than one tucked in the middle of the house. The number that comes out of that calculation is what decides which unit goes in, not the size of the house as a whole or what the last system happened to be.

Oversized hurts more than undersized

A unit that's too big cools or heats the room fast, shuts off, then starts again a few minutes later. That cycling keeps the room swinging around the set temperature instead of holding steady, and it doesn't run long enough in each cycle to pull moisture out of the air in cooling mode. A unit sized correctly runs longer at a lower output, holds the room steadier, and puts less wear on the compressor over time.

Comparing mini splits means comparing more than the unit itself. Ask how many zones the contractor is proposing and why, since one indoor head covers one room or open area, not a whole floor. Ask what happens to the old furnace or boiler, whether it stays as backup heat or gets pulled out entirely. Ask about the condenser placement outside, since it needs clearance on all sides and a path for condensate to drain away from the house. Ask what warranty covers the compressor versus the labor to replace it, because those are often different lengths and different parties. And ask who services the brand locally, since a mini split with no nearby parts supply or trained technician turns a small repair into a long wait.

Installation starts with the outdoor condenser and the indoor head units going in, then the line set connecting them through a hole drilled in the wall, a few inches wide at most. That line set carries refrigerant lines, a condensate drain, and electrical wiring together, usually wrapped and run along the exterior wall to the condenser pad. Once the lines are connected, the system gets evacuated with a vacuum pump to pull out air and moisture before refrigerant goes in. Skipping that step is one of the most common reasons a new mini split underperforms or fails early. After charging, the contractor tests each zone, checks the temperature split at the indoor head, and confirms the condensate drains properly instead of pooling. Most of the day goes to the mounting, the line set run, and the vacuum and charge, not to any single dramatic step.》