Complete Solutions for All Your Ductless Mini Split Needs

Ductless mini split systems are highly efficient and versatile, but getting the most out of them depends on expert installation and care.

Proper sizing, placement, and setup all play a critical role in performance, energy efficiency, and long-term reliability. Our NATE-certified technicians can assist with:

In addition to ductless services, Haller offers a full range of home comfort solutions to keep your entire system running smoothly, from traditional heating and air conditioning installation and repair to indoor air quality upgrades.

(717) 204-8120


Your Local Mini Split Experts

When it comes to ductless mini splits, Haller brings decades of trusted experience and a strong commitment to doing the job right.

Serving Central and Eastern Pennsylvania since 1981, we have built a reputation for dependable service, skilled workmanship, and a focus on safety in everything we do. Every service is backed by our 100% satisfaction guarantee, so you can feel confident you are getting quality results and lasting performance.

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Scheduling Mini Split Services Couldn’t Be Easier

Getting ductless mini split service from Haller is straightforward, and our team handles the details from the first call to the final walkthrough.

Give us a call or reach out online to get started with your service request. Our friendly team will gather a few details about your needs and help guide you to the right solution.

We work with your schedule to find a service time that fits your routine. With flexible options and prompt communication, you will always know when to expect us.

Our NATE-certified technicians arrive on time, ready to assess your system and complete the work efficiently. We make sure everything is running smoothly and answer any questions before we leave.

Haller technician greeting woman at her door with a handshake

(717) 204-8120


What Our Customers Are Saying

Learn More About Our 100% Satisfaction Guarantee

4.7
Based on 2609 reviews
Thor was amazing. Knew what he was doing, solved our issues, and provided great advice.
HALLER is always the best. Prompt, courteous and great communicators. Even better, they are knowledgeable and skilled. I have used them for 20+ years and their great service has continued.
Jason was at my house for two separate projects and did very thorough work both times. Will definitely have him out for future projects!
Regular winter service for furnace. Pleased with courteous, quick service.
Worked on my heat pump for the central air and stood until the airflow was right
Haller Enterprises has been fantastic. I switched to them recently because we continued to have issues even after my last provider came here and invoiced us a number of times

There were so many things that Haller uncovered that my last provider really should have done and shouldโ€™ve been done. I had also given my former provider a five star review, but this teaches me a lesson.
Sometimes you really think you know whatโ€™s good just because people give you quick service but it doesnโ€™t always mean theyโ€™re gonna solve your problem.

Haller is quick, very professional and very detailed about what my problems are and what was not done in my home but should have been

I guess you donโ€™t know whatโ€™s good until you receive better
And just to visits, my gut tells me that these guys really deserve six stars or more
Great customer service and honest recommendations!! Very helpful!
I want to Thank Thor again for his excellent work on taking care of several electrical issues that needed to be taken care. He had to spend over 13 hours and in very hot conditions, to correct the sloppy and careless work from whoever the previous owner had do lighting work when they remodeled. They had left live wires and junction boxes open. I initially was only getting a ceiling fan with a light installed from scratch until he showed me pictures of the wiring for all lights on the 1st floor in my crawl space attic.
James , did a great job . I highly recommend Haller.
Great job, servicing my AC units
Mark came and adjusted the setting on our water softener that were effected by a power outage in our area. He was prompt, pleasant and explained how things were done.
Very friendly & helpful
New AC unit
Our tech came quickly and discovered the issue with out A/C unit right away. Replaced the part and tested the system! He was very knowledgeable and explained everything! Will definitely be using this company for future repairs and services.
We greatly appreciated your fast and professional service for replacing our heat pump, we look forward to working with you in the feature, thank you for everything.
Very personable. Shared some good information with me
replaced heating and cooling system. Excellent job and great service.
I had Daniel Valdez as my dispatch employee and Jonathan Logan as my technician Jonathan was the best technician I ever had from Hallers I had 3 technician within a one month period all telling me a different out come for my A/C that wasnโ€™t working in the heat wave we were experiencing Jonathan worked with me for the best outcome to REPAIR my A/C not replacing the system we definitely had some problems getting my part due to the warehouse that collapsed in Harrisburg to finally receiving the part Jonathan came from his home to replace the part in the heat wave Jonathan is a very good technician and a great and caring person Thank you for all your help and knowledge
Phillip did an excellent job fixing our HVAC condensation pipes. He was very friendly, professional, and helpful throughout the entire visit. He explained the problem clearly and made sure everything was repaired correctly. The job was completed efficiently, and everything is working perfectly now. We really appreciate Phillip's excellent service and would highly recommend him to anyone needing HVAC work!
Service tech, Shawn Dunn arrived as scheduled, diagnosed the problem quickly and replaced the part on the spot. Thank you Shawn for your professionalism and your kind, personable service.
Great job
The serviceman was very friendly, respectful of person and place, and very diligent at work.
Complimenting Haller's tech Jonathan Avila who has provided installation and maintenance services for my buildings many times. His concern for customer needs is evident right from the start. He wants to know how you think your system is doing. His work is very thorough backed up by photos of each thing he found that needed attention. I had an appointment mid visit
but Jonathan clearly explained everything to my wife backed up by his photo record.
I was able to review and understand his work later w/ the photos attached to my digital receipt.
My estimates were just as thorough. I am glad Jonathan is our service tech.
Darius was thorough and tried to think of how to isolate my problem, which she did after testing out a few options. I was very happy with my service.
Vincent replace our water heater with a tankless one. He is a extremely polite gentleman and explained all things very well. He work long and hard and did a couple extra jobs while here. I would not hesitate to ask for him for anything else needed. Thank You Vincent

(609) 799-3434

Ductless Mini Split Repair Services

Even the most efficient ductless systems can run into issues over time.

Haller’s NATE-certified technicians quickly diagnose problems and deliver lasting ductless hvac repairs across Central and Eastern Pennsylvania to keep your system running at peak performance.

If your mini split is not keeping your space comfortable, the issue could be low refrigerant, a clogged filter, or a failing component. We pinpoint the cause and restore proper operation so you get consistent comfort again.

Unusual sounds or musty smells coming from the system often signal internal problems or buildup. Our team inspects, cleans, and repairs the unit to eliminate disruptions and improve air quality.

Water leaks or excess condensation can indicate a clogged drain line or other internal issue. We resolve the source of the leak and help prevent future water damage.

If your ductless system will not start, the problem may stem from electrical components, the thermostat, or internal controls. We troubleshoot the system and get it back up and running safely.

Uneven comfort between rooms can point to sensor issues, improper settings, or system malfunctions. We recalibrate and repair the system to ensure balanced, reliable performance throughout your home.


24/7 Emergency Ductless Mini Split Service

When Your System Fails, We Respond Around the Clock

A ductless system that fails in the middle of a July heat wave or a January cold snap is not something that can wait until business hours. Haller’s NATE-certified technicians are available 24/7 for emergency ductless mini split service across Central and Eastern Pennsylvania, getting comfort restored to your home as quickly as possible.

(717) 204-8120

4.7
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North American Technician Excellence - NATE - Certifying the Finest in HVACR

(717) 204-8120

Ductless Mini Split Replacement Services

While ductless mini splits are built for long-lasting performance, there comes a point when repairs are no longer the most cost-effective solution.

Recognizing the signs of an aging or failing system helps you avoid unexpected breakdowns while improving your home’s comfort and efficiency with a new ductless system.

If your system needs constant service, those costs add up quickly. Replacing the unit provides a more reliable and long-term solution.

An older or inefficient system works harder to maintain comfort and uses more energy in the process. A new ductless system significantly improves efficiency and lowers monthly costs.

If some rooms are too hot while others are too cold, your system is no longer performing properly. A replacement restores balanced, dependable comfort throughout your home.

Most ductless mini splits last 20 years or more with proper maintenance. If your system is approaching or past that range, upgrading prevents unexpected failures.

Newer ductless systems offer improved performance, smarter controls, and better energy efficiency. Replacing an old unit lets you take advantage of modern comfort and convenience.

Ductless Mini Split Maintenance

Routine maintenance is key to keeping your ductless mini split system running efficiently and reliably year-round.

Ductless systems that run in both heating and cooling mode accumulate operational hours faster than single-season equipment, which makes regular service more important, not less. Consistent maintenance delivers the following benefits:

A clean, properly charged system runs at its rated efficiency, which shows up in your monthly utility costs across all four seasons. 

Regular service reduces wear on the compressor and key components, adding years to the usable lifespan of the system.

Small issues caught during maintenance do not turn into mid-season failures when the system is under the most demand.

A well-maintained system holds setpoints accurately across every zone, so no room runs too hot or too cold.

(833) 222-2953


Homeowner greeting Haller technician at the door for maintenance

The Haller Home Comfort Club

Protect Your System Year-Round with One Simple Plan

Home Comfort Club membership is the easiest way to stay ahead of ductless mini split maintenance.

Members get annual tune-ups, priority scheduling, and exclusive savings on repairs, all under one plan that covers your HVAC, plumbing, and electrical systems together.


Professional Mini Split Installation

Choosing the right ductless mini split system is essential for maximizing comfort, efficiency, and performance in your home.

Haller installs a variety of ductless systems designed to fit different layouts and comfort needs.

Single-zone systems are ideal for heating and cooling one specific area, such as a bedroom, home office, or garage. They provide targeted comfort with a dedicated indoor unit connected to an outdoor unit.

Multi-zone systems allow you to control temperatures in multiple rooms using one outdoor unit. This option is perfect for whole-home comfort with customized settings in each space.

Wall-mounted units are the most common and versatile option for ductless systems. They install high on the wall and deliver efficient, consistent airflow throughout the room.

Ceiling cassette systems install flush with the ceiling for a more discreet appearance. They distribute air evenly in all directions, which works well for larger or open spaces.

Floor-mounted units install near the base of a wall, similar to a radiator. They work well in rooms with limited wall or ceiling space and provide reliable comfort where other options may not fit.

Haller van parked on the street in a local neighborhood

(609) 799-3434

Pennsylvania’s Trusted Mini Split Pros

Our technicians are NATE-certified, demonstrating advanced knowledge and skill in HVAC systems. Your ductless mini split service is handled by highly trained professionals.

Since 1981, Haller has served Central and Eastern Pennsylvania with reliable home comfort solutions. Our long-standing presence means we understand the needs of homes across the Lehigh Valley, Lancaster County, York, and Harrisburg.

As a Carrier Factory Authorized Dealer, we meet strict standards for quality, service, and expertise. That designation means top-tier products and installation from a team Carrier trusts to represent their brand.

Haller is a BBB Accredited Business. That accreditation reflects how we operate with every homeowner we serve.

Financing options are available for qualified homeowners to make ductless upgrades and repairs more manageable. You can enjoy improved comfort now while paying over time.

Comfort issues do not always happen during regular business hours. Our team is ready to respond quickly when you need us most.

We stand behind our work with a 100% satisfaction guarantee on every ductless mini split service. If you are not completely happy, we make it right.


Male Haller tech with tool bag entering residential home smiling.

Schedule Your Ductless Mini Split Services

When you need reliable, energy-efficient comfort, Haller is your trusted partner.

From expert installation to fast repairs and ongoing maintenance, our team is here to deliver the performance and peace of mind your home deserves. Contact Haller today to schedule ductless mini split service across Central and Eastern Pennsylvania.


Ductless Mini Split FAQs

How does a ductless mini split system work?

Ductless mini splits use an outdoor unit connected to one or more indoor air handlers to heat and cool specific areas of your home. They deliver air directly into each space, which means precise temperature control without ductwork and without the energy loss ducted systems produce.

Are ductless mini splits energy efficient?

Yes, ductless systems are highly energy efficient because they avoid the energy loss associated with ductwork. Many models use advanced inverter technology to adjust output and reduce energy consumption, which shows up in monthly costs across all four seasons in Central and Eastern Pennsylvania.

How long do ductless mini split systems last?

With proper maintenance, most ductless mini splits last 20 years or more. Regular service helps extend their usable life and keeps performance consistent across the year-round demand this region places on them.

How often should a ductless mini split be serviced?

At least once a year is the minimum, and twice a year is ideal since the system handles both heating and cooling. Routine maintenance prevents breakdowns, improves efficiency, and maintains indoor air quality.

Can a ductless mini split both heat and cool my home?

Yes. Ductless mini splits provide both heating and cooling in one system, which makes them an excellent fit for Central and Eastern Pennsylvania’s four-season climate. One system handles both winter and summer reliably.

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