Residential HVAC Services in PA

For all of your HVAC needs, you’re in good hands.

Certified, Experienced & Professional HVAC Services in Lancaster, PA

If you’re like most people, worrying about fixing your heating and cooling system is not your idea of a good time. We get that. That’s why our NATE-certified HVAC experts are here to provide you peace of mind by resolving any heating and cooling issues quickly and properly. 

We offer a variety of heating and cooling solutions that fit any budget, including preventative maintenance solutions and financing for those unavoidable repair costs. Along with providing our expertise, we strive to keep a smooth and transparent customer experience.

Ready to begin? You can book an appointment with us, or try HomeX Remote Assist to get your repair started over the phone.

Heating & Cooling Services in Allentown, Lancaster, York, Exton and Harrisburg

We help customers analyze and choose dependable, high-efficiency heating and air conditioning repair and replacement options.

Heating & Cooling Maintenance

An ounce of prevention is worth a pound of cure when it comes to your heating and cooling systems. Routine maintenance is key to prolonging the life of your systems.



Like most things, nothing lasts forever. When unexpected failures happen, our technicians are here to diagnose and repair your heating and cooling systems in no time.



From a simple ductless mini-split to a full duct installation, we prioritize you and your home with our fast-track timeframe, providing the best HVAC solutions to you as fast as possible.


Smart Maintenance

Maintenance just got smarter with 24/7 system monitoring, including real-time updates and emergency notifications.

Ductless Systems

Whether cooling a new addition or finding a solution for your whole home, ductless HVAC systems offer many options for homes with or without existing ductwork.

Ductless System Services


Our team of experts are trained to repair, install, and maintain oil, propane, natural gas, and electric boilers, regardless of the application.


Looking for a more environmentally friendly heating and cooling option? We are a leading provider of geothermal system installations.

Geothermal services

Indoor Air Quality

The air in your home should be of the highest quality. We offer a variety of indoor air quality products, including whole-home dehumidifiers, UV lights, air purification systems, and more.

Indoor air quality services

Additional Heating & Cooling Services in Eastern & Central PA

Radiant systems
Gas, propane, oil-forced air furnaces & boilers
Smart and programmable thermostats

What Makes Haller Heating & Cooling Different

We have over 35 years of experience providing the best heating and air conditioning solutions in PA.


Our background-checked, NATE-certified technicians arrive in marked vans and recognizable uniforms with shoe covers and drop cloths to protect your home.


No question is too big or too small. With expert techs available 24/7, we can answer any questions you have about your heating and cooling systems. 


We’re here when it’s convenient for you, offering regular hours on Saturdays, as well as emergency service 24/7, all-year-round.


With our online scheduling tool, get the help you need, when you need it.

Our Central Pennsylvania HVAC Residential Service Area

Lehigh County

Chester County

Dauphin County

Lancaster County

York County

And More!

Looking to replace or install a new heating and cooling system but don’t know where to start?

We can help. Thanks to HomeX Remote Install Quote service, you can virtually connect with a heating and cooling design & sales specialist to diagnose and solve your problem: Using live video chat, our experts can determine the right system for your home, provide an accurate quote within an hour, and arrange installation for as early as the next day. Less stress, fewer visits, better results.