No cooling? We're on call right now.
Cool air back today, by people who live here too.
AC repair and replacement across the Lehigh Valley — 24/7, with the price quoted before the work starts.
(610) 555-0142Answered by a person, day or night. Whitehall, PA.

24/7 emergency service. No heat, no cooling, burning smell, water around the furnace — call now, don't wait for morning.
What counts as an emergencyWhat we do
Residential and light-commercial heating and cooling
Six things make up most of our work. We do all of it in house — no subcontracted install crews, no rotating cast of strangers in your basement.
AC Repair
Warm air, ice on the line set, a breaker that keeps tripping. We diagnose the actual fault and give you the repair price before we touch a wrench.
Details and pricingAC Installation & Replacement
Load-calculated sizing, new line set when it's needed, and a system that runs quiet. Free in-home estimate, no sales pitch.
Details and pricingFurnace Repair
Ignition faults, bad inducers, cracked heat exchangers, and short cycling. Most furnace repairs are done on the first visit.
Details and pricingFurnace Installation & Replacement
80% and 96% AFUE gas furnaces installed to code, with the venting, gas piping, and duct transitions done right.
Details and pricingHeat Pumps
Cold-climate heat pumps that actually hold up in a Lehigh Valley January, set up with a sane backup-heat strategy.
Details and pricingDuctless Mini-Splits
For additions, finished attics, sunrooms, and old homes with no ductwork. One head or eight, on one outdoor unit.
Details and pricing- Licensed & insuredPA HIC #PA041872
- NATE-certified techsEvery field technician
- EPA 608 certifiedUniversal refrigerant handling
- Family ownedSince 2009
- 24/7 emergencyAnswered by a person
What neighbors say
-39 years of word of mouth
"Called at 10:40 on a Tuesday night in January with a house at 54 degrees and two kids. Someone actually answered. Tech was here inside an hour, found a failed pressure switch, had the part on the van. Price was what he quoted at the door."
"Three companies quoted us. Keystone was the only one who measured windows and went in the attic before giving a number. They weren't the cheapest, they were the clearest. Install crew laid down drop cloths and hauled the old condenser away."
"Our 1948 house had a furnace older than my marriage. They did the install in one day, rebuilt the plenum, and added a humidifier. First winter our upstairs is finally warm and my hardwood stopped gapping."
Recent work
Before and after, on real jobs
Every install gets photographed before we start and after we clean up. Ask to see photos from a house like yours.
Before
After1948 Cape Cod, gas furnace swap — Emmaus
Cracked 60% AFUE furnace replaced with a 96% two-stage unit. New plenum, new PVC venting, condensate pumped to the utility sink. One day, one crew.
Service area
Whitehall, and about 25 minutes in every direction
Our shop is on MacArthur Road. That means Allentown, Bethlehem, and Easton on a normal day, and Whitehall, Catasauqua, Coplay, Northampton, and Fullerton fast. If you're on the edge of the map, call and ask — we'll tell you straight whether we can get there.
- Whitehall
- Allentown
- Bethlehem
- Easton
- Emmaus
- Catasauqua
- Coplay
- Northampton
- Fullerton
- Schnecksville
- Slatington
- Macungie
- Alburtis
- Trexlertown
- Breinigsville
- Fogelsville
Need it fixed today, or just want a number you can trust?
Call and talk to someone in Whitehall who can tell you what a visit costs and when we can be there. Or send the estimate form and we'll follow up within one business hour.