HVAC Services in Pennsylvania
Certified, Experienced & Professional HVAC Contractors
A broken furnace in February or a failed AC in July is the last thing you need to deal with. You shouldn’t have to become an HVAC expert to get your home comfortable again.
That’s where we come in. At Haller Enterprises, our NATE-certified technicians handle the diagnosis, the repair, and the paperwork, so you can get back to your day. Call Haller now and get your home back to comfortable — warm in winter, cool in summer, and one less thing on your list.
For all your HVAC needs, you’re in good hands.
Heating & AC Services in Allentown, Lancaster, York, Exton & Harrisburg
When you choose Haller for HVAC services, you get repairs, installations, maintenance, and 24/7 emergency service for every type of heating and cooling equipment.
Central and Eastern Pennsylvania winters and humid summers push heating and cooling systems hard. When yours needs attention, you deserve a team that shows up on time, explains what’s happening clearly, and gets your home comfortable again.
We’ve been taking care of homes across our service area since 1981. That means generations of local families have trusted us with their furnaces, air conditioners, heat pumps, and boilers. Our trucks are throughout the region every day, so when you call, we can get to you quickly. And if your heat goes out at midnight or your AC fails on a Sunday afternoon, we answer the phone and dispatch a technician.
24/7
Emergency Service
54,133
HVAC Systems Serviced
43
Years in Business
Central and Eastern Pennsylvania’s Trusted HVAC Service Provider Since 1981
We answer the phone, show up on time, and explain what’s wrong before we start any work.
Our team is easy to schedule with and easy to reach, so you’re never left waiting or wondering. With 24/7 emergency service, we are focused on protecting our neighbors and restoring comfort to your home. Every HVAC service we provide is backed by our 100% satisfaction guarantee.
Pennsylvania Locations
Our Easy, 3-Step HVAC Scheduling Process
Scheduling HVAC services with Haller is simple, convenient, and designed around your needs.
Whether you’re dealing with an urgent issue or planning a home upgrade, we make it easy to get the professional help you need without added stress.
Call us or schedule your appointment online at a time that works best for you. Our friendly team will gather a few details about your home and service needs to make sure we’re fully prepared.
A skilled Haller technician arrives on time and ready to work. We inspect the system, explain what we find in plain language, and walk you through your options before any work begins.
Once the work is approved, our team completes the repair, installation, or maintenance with precision and care. Every job is backed by our commitment to quality and 100% satisfaction guarantee.
What Our Customers Are Saying
Learn More About Our 100% Satisfaction Guarantee
HVAC Specials & Discounts
Take advantage of our current offers & coupons!
Get Pre-Approved Financing
Home Comfort Club
Maintenance plans starting at
$39 /mo
Stay Ahead of HVAC Issues with the Home Comfort Club
The Haller Home Comfort Club is designed to make maintaining your HVAC services simple, affordable, and stress-free. Instead of reacting to unexpected breakdowns, you stay ahead of problems with proactive service and exclusive member benefits that protect your comfort year-round.
Home Comfort Club members move to the front of the line whenever HVAC issues arise. When you need service, you’re not waiting behind everyone else.
Routine maintenance catches small issues before they turn into expensive emergencies. Members receive scheduled tune-ups that keep your HVAC system operating at peak efficiency and extend its lifespan.
Members enjoy exclusive discounts on repairs, priority access to seasonal promotions, and added savings that make owning and maintaining your home more affordable over time.
With scheduled maintenance and priority service, you build a long-term relationship with a team that knows your system. Backed by our 100% satisfaction guarantee, you can count on consistent support year after year.
Schedule home system maintenance by calling (717) 204-8120.
Your Choice for Central and Eastern Pennsylvania HVAC Services
Keeping your home comfortable in every season requires heating and cooling solutions you can rely on.
Haller provides expert HVAC services across Central and Eastern Pennsylvania, delivering dependable repairs, energy-efficient installations, and preventative maintenance designed to keep your system running safely and efficiently year-round.
Air Conditioning
Central and Eastern Pennsylvania humidity makes AC failures miserable fast. We keep cooling systems running through the worst of summer.
We service central air conditioners, ductless systems, and heat pumps in cooling mode. Refrigerant leaks, compressor failures, frozen coils, and electrical problems.
- AC Repair: AC Repair: Fast AC repair restores comfort quickly when your system isn’t performing properly.
- AC Installation: AC Installation: We install high-performance AC systems designed for reliable, energy-efficient cooling.
- AC Maintenance: AC Maintenance: Professional AC maintenance helps prevent breakdowns and improve efficiency.
- AC Replacement: AC Replacement: Expert AC replacement upgrades your home with modern, energy-efficient cooling.
Furnaces
Dependable furnace services keep your home warm and safe during the winter.
We service and install high-performance furnace systems designed to handle this region’s coldest temperatures. Whether you need maintenance, repair, or a full replacement, we make sure operation stays safe and heat output stays consistent.
- Furnace Repair: Furnace Repair: Prompt furnace repair restores reliable warmth when your system won’t ignite, heats unevenly, or makes unusual noises.
- Furnace Installation: Furnace Installation: We guide you through selecting the right furnace for your home and manage installation with precision and care.
- Furnace Maintenance: Furnace Maintenance: Routine furnace maintenance keeps your system running efficiently and helps you avoid unexpected breakdowns during the coldest months.
- Furnace Replacement: Furnace Replacement: Professional furnace replacement improves comfort, lowers energy bills, and provides more dependable performance all winter.
Heat Pumps
Heat pumps handle both heating and cooling, making them a practical choice for this region’s variable climate.
Modern cold-climate heat pumps maintain efficiency even when temperatures drop into the 20s. We install air-source and ground-source systems sized correctly for Central and Eastern Pennsylvania homes.
- Heat Pump Repair: Heat Pump Repair: Heat pump repair addresses refrigerant issues, defrost cycle problems, reversing valve failures, and compressor diagnostics.
- Heat Pump Installation: Heat Pump Installation: We design and install heat pump systems tailored to your home’s layout and efficiency goals.
- Heat Pump Maintenance: Heat Pump Maintenance: Routine heat pump maintenance keeps your system running efficiently and extends its lifespan with thorough inspections and performance checks.
- Heat Pump Replacement: Heat Pump Replacement: If your heat pump is aging or underperforming, heat pump replacement with a modern system improves comfort and lowers energy costs.
Ductless Mini-splits & VRFS
Ductless mini splits provide flexible, zoned comfort for homes across Central and Eastern Pennsylvania.
Ideal for additions, older homes without existing ductwork, or rooms without ductwork, these systems allow you to control temperatures independently. We install and service ductless systems to enhance comfort and efficiency.
- Ductless Mini-Split Installation: Ductless Mini-Split Installation: Wall-mounted indoor units connect to an outdoor compressor via refrigerant lines. Minimal construction required compared to adding ductwork.
- Ductless Mini-Split Repair: Ductless Mini-Split Repair: If your ductless system isn’t performing properly, we diagnose the issue and provide reliable ductless repair to restore efficient heating and cooling.
- Ductless Mini-Split Maintenance: Ductless Mini-Split Maintenance: Regular ductless maintenance keeps your system running at peak efficiency through filter cleaning, coil inspection, and refrigerant checks.
- Ductless Mini-Split Replacement: Ductless Mini-Split Replacement: When your ductless system is outdated or struggling to keep up, we provide expert ductless replacement with modern, energy-efficient units.
Boilers and Radiant Heating
Professional boiler services provide steady, consistent heat for your home.
Whether you rely on a traditional or high-efficiency boiler, we handle repairs, maintenance, and installations. Our technicians make sure your system runs safely and efficiently through the winter.
- Radiant Heating: Radiant Heating: In-floor and baseboard radiant systems deliver heat without blowing air, which means no drafts and no dust circulation. We install and repair radiant heating systems across Central and Eastern Pennsylvania homes.
Geothermal
Geothermal heating systems offer sustainable, energy-efficient comfort.
By using the earth’s natural energy, geothermal systems provide consistent heating and cooling with lower operating costs. We design and service geothermal solutions for homeowners looking for long-term savings and environmental benefits.
Oil-to-Gas Conversions
Converting from oil heat eliminates tank maintenance and often lowers fuel costs.
We handle the full conversion process: removing old equipment, coordinating gas line work, and installing your new furnace or boiler. Many homeowners across Central and Eastern Pennsylvania have made the switch as natural gas availability has expanded.
Indoor Air Quality Solutions
Dry winter air and humid summers both affect comfort and health in homes throughout this region.
We install whole-house humidifiers, dehumidifiers, air purifiers, and filtration systems that work with your existing HVAC equipment. Whole Home Humidifiers, Dehumidifiers, Duct Cleaning, Air Purifier Installation and Repair, Carbon Monoxide Detector Installation, Media Air Cleaner Installation, UV Air Cleaner Installation, and UV Light Installation are all part of what we offer.
- Whole Home Humidifiers
- Dehumidifiers
- Duct Cleaning
- Air Purifier Installation and Repair
- Carbon Monoxide Detector Installation
- Media Air Cleaner Installation
- UV Air Cleaner Installation
- UV Light Installation
Thermostats & Smart Home Devices
The right thermostat reduces energy waste and makes your system easier to control.
We install Wi-Fi thermostats, programmable thermostats, and multi-zone controls. Proper placement and programming make a measurable difference in efficiency.
We’re here to help! Call (717) 204-8120.
Questions?