★★★★★
Sam was incredibly quick to respond and kept communication clear and consistent throughout the process.
Aidan Carrigan, Google review
5.0 on Google reviews
Heating, cooling, heat pumps, and ductless systems in Harrisburg, PA.
We repair and replace furnaces and air conditioners, install heat pumps and ductless mini-splits, handle ductwork, and work on water-heating and filtration equipment.
Tell Sam what changed, what the system is doing now, and what another company may already have recommended. He can start with the problem and explain the practical options.
5.0
Google rating
46
Google reviews
Harrisburg
Local service base
DIRECT
Phone contact
Harrisburg HVAC service
A repair should be considered before a full system replacement becomes the default answer.
We work on furnaces, central air conditioning, heat pumps, ductless systems, ductwork, tankless water heaters, and whole-house filtration equipment around Harrisburg.
Customers name Sam and Christian and describe quick responses, clear communication, multiple options, competitive pricing, one-day installations, careful work in limited spaces, and repairs offered when others pushed replacement.
Start with the equipment, the symptoms, the rooms affected, repair history, and what you want to improve. That information helps separate an immediate fix from a longer-term system decision.
Services
Heating, cooling, ductless, ductwork, and water-heating services
Choose the system closest to your problem and see what details help Sam understand the call before arriving.
Heating & Furnace Service
We diagnose and repair furnaces and heating systems that stop running, lose heat, cycle poorly, or need replacement.
Learn moreAir Conditioning
We repair and replace central air-conditioning systems that stop cooling, run poorly, or no longer match the home's needs.
Learn moreHeat Pumps
We install and service heat pumps that provide both heating and cooling, including full-system replacement work.
Learn moreDuctless Mini-Splits
We install and service ductless systems for rooms and zones that need targeted heating and cooling without conventional ductwork.
Learn moreDuctwork & Airflow
We install and modify ductwork where room comfort, system replacement, attic space, or a new layout requires a better air path.
Learn moreWater Heaters & Filtration
We install published water-heating and whole-house filtration equipment alongside our HVAC services.
Learn moreWork photos
A To Zinn equipment, vehicles, installations, and ductless work
See real A To Zinn photos showing branded vehicles, furnaces, outdoor units, heat pumps, mini-splits, and installation work.
Service truck at an installation
Project photo
Branded service vehicle
Project photo
Central cooling equipment
Project photo
Furnace installation
Project photo
Ductless outdoor units
Project photo
Ductless heat pump
Project photoReputation
What customers say about Sam and A To Zinn
★★★★★
Sam Zinn was timely with all communication.
Whitney Long Maisano, Google review★★★★★
Fast and efficient and got me on the schedule in less than a week after my old unit broke.
Jibreel Bethea, Google review★★★★★
Sam is always courteous and professional.
Sally Miller, Google reviewService area
Harrisburg and nearby Dauphin County communities
We work around Harrisburg and nearby Dauphin County communities. The pages below cover nearby communities where customers may need the same services.
Tell us the property location, what needs attention, and the result you need.
FAQ
Questions before heating or cooling work
What should I tell Sam first?
Describe the equipment, what changed, which rooms are affected, recent repairs, and any recommendation or quote you are already comparing.
Do you install ductless systems?
Yes. Reviews and project photos document multi-zone mini-split and ductless heat-pump installations.
Can you provide repair and replacement options?
Customer reviews describe both complete system replacements and repairs offered after another company recommended replacement.
Start here
Tell Sam what the system is doing now.
Share the Harrisburg-area location, equipment type, symptoms, affected rooms, photos, repair history, and the best way to reach you.