Top HVAC Repairs in Central PA
Haller provides options and 24/7 support to repair your home’s heating and cooling systems.

Complete HVAC Solutions for Your Home
It can be frustrating and inconvenient when your heating, ventilation, or air conditioning system breaks. At Haller Enterprises, our goal is to fix your system quickly so you can feel comfortable again.
Our NATE-certified HVAC technicians will assess your HVAC systems and help you find the right solution for your home.
Call (717) 204-8120 for HVAC repair.
Questions?
Our Expert Technicians Can Repair Any HVAC System
Several HVAC systems heat and cool homes across Pennsylvania. Haller repairs these systems and others:
Does Your HVAC System Need a Repair?
Signs your heating or AC system may need repair or replacement.
Dirt and buildup can prevent proper airflow within HVAC systems. A clogged filter, condensate drain, or water valve may be the culprit. Power supply issues will also prevent the supply of warm and cool air.
But often, problems are associated with older systems that are less efficient at converting energy into heat. Outdated parts in older systems are more expensive to replace. Consider replacing HVAC systems older than 10 years.

1. Temperature Change
Unexpected temperature changes may indicate dirt and buildup, power supply issues or frozen pipes.

2. Malfunctions
Malfunctions in your home’s systems, like humidifiers and thermostats, might be caused by circuit breaker issues or dirt and buildup.

3. Unusual Smells
Smells coming from your furnace could be caused by a gas leak. This should be treated immediately.

4. Strange Noises
Noise is often associated with parts of the system that are responsible for airflow.
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Servicing Pennsylvania for Over 40 years.
Committed to Excellence
Lititz, Harrisburg/Hershey, York, Exton, Quakertown and beyond
Why Trust Haller With Your HVAC Repair?
Haller technicians show up in marked vans and use shoe covers and drop cloths. They’ll even come on a Saturday at no extra charge.
Frequently Asked Questions
Heating & Cooling Installations
How often should I change my humidifier filter?
Your humidifier filters should be changed no less than once every three months to ensure that your humidifier is providing optimum air quality within your home.
How often should a furnace air filter by changed?
How often you change your furnace filter depends on the size of the filter itself. Here are a few guidelines to follow: 1-3 inch filter should be changed once every three months; 4 inch filter should be changed once every six months; 5 inch filter should be changed once every twelve months. The best way to know if your furnace filter needs to be changed is to look at it. If it appears dirty and has debris on it, it needs to be replaced.
How often should a furnace cycle in the winter?
In milder weather, your furnace might cycle every 10-15 minutes. As the Pennsylvania weather gets colder, the cycles become longer and less frequent. Throughout the colder months of the year, your furnace should cycle about 2-3 cycles per hour.
Heating & Cooling System Day-To-Day Upkeep
How often should I change my humidifier filter?
Your humidifier filters should be changed no less than once every three months to ensure that your humidifier is providing optimum air quality within your home.
How often should a furnace air filter by changed?
How often you change your furnace filter depends on the size of the filter itself. Here are a few guidelines to follow: 1-3 inch filter should be changed once every three months; 4 inch filter should be changed once every six months; 5 inch filter should be changed once every twelve months. The best way to know if your furnace filter needs to be changed is to look at it. If it appears dirty and has debris on it, it needs to be replaced.
How often should a furnace cycle in the winter?
In milder weather, your furnace might cycle every 10-15 minutes. As the Pennsylvania weather gets colder, the cycles become longer and less frequent. Throughout the colder months of the year, your furnace should cycle about 2-3 cycles per hour.
How often should my heat pump cycle on and off?
Your heat pump should cycle throughout the year, at a rate of about 2-3 cycles per hour, increasing in frequency as the temperature gets colder. However, if you suspect your heat pump is cycling too often, due to more frequent noise coming out of your heat pump, contact Haller today for an assessment.
Heating & Cooling Servicing
How often should my heat pump be serviced?
Your heat pump should be serviced by a licensed professional no less than once a year. This keeps your heat pump clean and efficient for year-round comfort.
How often should my boiler be serviced?
Your boiler should be serviced no less than once a year to ensure that it is working at optimum efficiency.
How often should my furnace be serviced?
Your furnace should be serviced no less than once a year, though it is preferable that your furnace is serviced by a licensed technician twice a year — once in the Fall and once in the Spring.