Mini Split Installation in Murrysville, PA
A new system here will heat from October through May and cool from June through August every year. Tell us about the house, and a licensed contractor who covers Westmoreland County will get in touch.
Tell us about the job
It takes about a minute.
In Murrysville, a mini-split works almost all year
Winter nights average 23°F here, and homes need heat from October through May. That is 8 months of the year the mini-split has to keep up, then summer afternoons average 81°F for the 3 months after that. Only one month goes by without a call for heat or cooling.
A mini-split installed here has to hold up on both ends of that range, not just handle a mild fall day. Any unit built from 2023 on has to meet 14.3 SEER2 for cooling and 7.5 HSPF2 for heating, and in a place that leans on the system 11 months a year, that heating side matters as much as the cooling side.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 23°F
- the average winter night it heats against
- 81°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Pennsylvania requires contractors to register with the state.
That registration puts the business on file with the state and nothing more. There is no trade exam behind it and no license number tied to it. Pennsylvania also does not let cities or towns add their own HVAC license on top of that, so the registration is the only state record that exists anywhere in the state.
For a mini-split installation, the registration is not what protects you. Most local building offices require a permit for this kind of installation and an inspection once the work is done, and that inspection is what confirms the work was done right.
Source: Pennsylvania General Assembly
- Is a mini split worth it?
- For most homes, yes, especially if you're heating a room that isn't on your main system, like a garage, a bonus room, or an addition. A mini split gives that space its own heat and cooling without extending ductwork. With winter lows here averaging 23°F, look for a cold-climate model so it keeps up on the coldest nights instead of leaning on backup heat. A contractor can look at the space and tell you what size unit it needs.
- How many rooms can a mini split cover?
- A single-zone system heats and cools one room. If you need more than that, a multi-zone system runs several indoor units off one outdoor unit, with each room controlled on its own. How many rooms one outdoor unit can carry depends on the size of the rooms and how much heat or cooling each one needs, which is something a contractor works out room by room.
- Can a mini split heat a whole house?
- It can, if you install enough zones to cover every room and size the system for how cold it gets here. Winter nights average 23°F from December through February, so the outdoor unit has to be rated to keep producing heat at those temperatures, not just at milder ones. Most homes here already heat with gas, so a whole-house mini split is more often chosen for new construction or a home without existing ductwork. A contractor can size a system against your home's layout and tell you what it would take to cover it all.