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24/7 Emergency Service: (717) 855-4101
TUNE-UPS · DUCTLESS · HEAT PUMPS · SHREWSBURY, PA
Air Comfort Technologies is a family-owned HVAC company offering Shrewsbury, PA homes a $59.99 fall furnace tune-up and safety check when you schedule by Nov 15, 2026 (one system per household; can’t be combined with other offers). We also repair and replace furnaces, heat pumps, Mitsubishi ductless and central AC, with 24/7 emergency service (after-hours fee applies).
★ 4.9 stars · 400+ Google reviews | Family owned since 2015 | PA HIC PA117750 | Trane Comfort Specialist | Mitsubishi Diamond Contractor
Our furnace tune-up is a fall check of your heating system by a factory-trained technician, covering the items listed on our heating maintenance page. Offer: $59.99 fall tune-up and safety check (one system per household; can’t be combined with other offers; schedule by Nov 15, 2026). Full terms are on our specials page.

We repair, maintain and replace heat pumps of all major brands for Shrewsbury homes. Repair visits start with a $109 regular-hours diagnostic, waived if you approve the repair.
As a Mitsubishi Diamond Contractor, we repair and replace Mitsubishi ductless systems in Shrewsbury. Learn about our ductless mini-split repair. Estimates on new ductless installations are free. Note: ductless is excluded from the up-to-$2,000 full-system offer.
If your furnace stops heating, see our furnace repair service. Visits start with a $109 regular-hours diagnostic, waived if you approve the repair. For problems at night or on weekends we offer 24/7 emergency heating service; an after-hours emergency fee applies.
For cooling, we handle AC maintenance and AC repair on central air, heat pumps and ductless mini-splits: refrigerant leaks, capacitors and contactors, blower motors, coils and condensate drains. Thinking about a new system? See AC replacement. Questions about indoor air quality? See air quality.
Shrewsbury, PA sits along the I-83 corridor in southern York County, near the Maryland line. We serve the borough and the surrounding Shrewsbury Township area, plus Glen Rock, Loganville, Railroad, New Freedom, Stewartstown, Red Lion and Dallastown. All towns are on our service area page.
FRESH FROM THE FIELD
We went out on a routine fall maintenance visit for this gas furnace and its evaporator coil. When our tech opened it up, the installation manual was still sitting in the bottom of the furnace, after about ten years of service by another company.

The evaporator coil was severely corroded and most likely leaking refrigerant.

The heat exchanger was heavily rusted. We also found a universal igniter that had been installed and did not fit properly.

With the system at the end of its life, we had already shared replacement options with the homeowner earlier in the year. They are moving forward with a new system.

Tech tip: A thorough maintenance visit means opening up the equipment and inspecting the heat exchanger, coil and ignition parts, not just taking a quick look. Thinking about a replacement? Free in-home estimates are available.
Visit completed [10/22/26]
Special financing available.* Financing details
*Subject to credit approval.
A Shrewsbury homeowner's old, outdated system had a cracked heat exchanger. A cracked heat exchanger is a serious problem, and with an older system it was time to replace rather than repair. We installed a Trane XV20 variable-speed 20 SEER heat pump paired with a Trane two-stage 97% furnace, so the home is set for the heating season ahead.

Call (717) 855-4101 or schedule online. Same-day service is often available for Shrewsbury homes. Repairs start with a $109 regular-hours diagnostic, waived if you approve the repair. Residential only, all major brands.