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Man changing air conditioning filter in home

Keeping Your Building’s Air Clean and Safe

Haller offers a variety of heating, ventilation, and air conditioning (HVAC) installation and replacement options to fit your Pennsylvania home’s needs and keep you comfortable year-round. One of Haller’s HVAC Design and Sales Specialists work with you to design an HVAC system that suits your budget, energy efficiency, and air quality needs. Once you decide on a solution, enjoy a worry-free installation by NATE-certified Haller Technicians.

Book online or call (888) 565-0546 for your FREE virtual or in-home consultation today!

HVAC Installation Systems

Popular heating and cooling systems in Pennsylvania:

Cool temperature icon

Central Air Conditioning Systems

Cools air from one central location in your home and distributes it through ductwork.

Ductless system

Ductless Systems

Comes in a variety of shapes and sizes, ductless systems are a great option to heat and cool your home.

Smart Thermostat Icon

Smart Thermostats

Devices that allow you to set and control the temperature in your home remotely or on a schedule.

Heat Pump

Heat Pumps

Provides heat in the winter and cool air in the summer using a reversing valve.



Uses natural gas to warm air from a central location and circulates it through ductwork.



Supplies the transfer of hot air in your home by heating a liquid (usually water).



Add moisture to the air, either through your central HVAC or a standalone system.

Geothermal Heating

Transfer heat into your home from the earth’s surface.

Special Offers

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4 Reasons To Replace Your Aging HVAC System

Improve air quality, energy efficiency, and cost savings with a new HVAC System.

Dirt and buildup can accumulate in your system, blocking filters and clogging blowers. Over time, this may reduce airflow and cause permanent damage. And as systems age they become less efficient at converting energy into heat, costing you more money in the long run.

Financing options from Haller give you time to manage your finances and move to a more energy-efficient and cost-effective solution. We are proud to offer a range of great financing choices, and our team can help you determine the right option for your unique needs.

1. Improved Airflow

Dirt and buildup in aging systems may lead to harmful carbon monoxide emissions.

2. Cost Savings

With age, less efficient systems increase the cost to maintain a comfortable living environment.

Man changing air conditioning filter in home

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Barrels of R-22 refrigerant in a line

Installer and homeowner kneeling looking at new furnace

3. Compatibility with Current Parts

R-22 refrigerant, used by many heating and cooling systems manufactured before 2010, will phase out by 2020. This will increase the cost of repairing systems that use R-22 refrigerant.

4. Financing Options

Even though a new system can be a bigger expense, our team can help you choose from our range of great financing options.

Haller Technician Opening Back Van Doors

Why Trust Haller with Your HVAC Installation?

Servicing Pennsylvania for over 40 years.

A family-run business installing heating and cooling systems across Lititz, Harrisburg, Hershey, York, Exton, Quakertown and beyond.

Haller Technicians show up in marked vans, use shoe covers, and drop cloths. They will even come on a Saturday at no extra charge.

Next-day Installation

Ask about the Fast Track Program to see if you qualify for system installation within 48 hours of your free in-home consultation.

Financing Available

Ask your design & sales team member about all the great financing options we have for new systems.

100% Satisfaction Guaranteed

Haller stands by the quality of their polite and professional technicians and offers a 100% satisfaction guarantee.

Experienced Technicians

NATE certified technicians undergo continuous training on all the latest equipment to solve any issue in your home.

Frequently Asked Questions

Heating & Cooling Installations

How often should I replace my boiler?

Most boilers should last at least 15 years. If your boiler is experiencing issues, contact Haller Enterprises today to find out if you need a replacement.

What are programmable thermostats and how long do they last?

A programmable thermostat is a device that allows for you to control the temperature in your home on a pre-set schedule. While there is no exact lifetime measurement of a programmable thermostat, you can expect that it will be operational for about 10-15 years.

What size HVAC unit do I need?

The size of the HVAC unit — whether it be an air conditioner, heat pump, mini split ductless system, furnace, humidifier, or boiler — needed for your home depends on the size of your home, the height of your ceilings, your climate zone, and more. Call Haller enterprises today to find out the best option for your home.

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 be 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.