7 AM - 5 PM, Monday - Friday

Saturday - Seasonal / Sunday - Closed

7 AM - 5 PM, M - F

Your Duncannon HVAC Team, Comfort That Feels Like Home

We Keep Families & Businesses Comfortable All Year Long

💵 Transparent, Upfront Pricing, No Hidden Costs

🏅 Licensed HVAC Experts Proudly Serving Duncannon & Nearby Communities

🔄 Tailored Heating & Cooling Solutions for Every Central PA Home

🕑 Emergency Service 24/7, Fast, Reliable, Local

★★★★★

5.0 (180+ Local Reviews)

New HVAC Installations & Service for Duncannon PA

Duncannon’s Trusted Heating & Cooling Experts, Comfort You Can Count On

When winter bites in Perry County or summer heat bakes Duncannon homes, the last thing you want is a system failure. At Legacy Comfort Systems (LCS), we specialize in keeping your home perfectly comfortable, no matter the season. We combine years of local HVAC experience with honest service, no gimmicks, no unnecessary upsells, just reliable heating and cooling solutions.

As your neighbors, we understand the unique needs of Duncannon and surrounding communities. From cozy historic homes along the Susquehanna to modern builds in Marysville or Millerstown, our technicians handle everything, fast repairs, preventative maintenance, or full system replacements, with the skill and care you deserve. And because we stand behind our work, every job comes with a 100% satisfaction guarantee.

See What Our Customers Are Saying

Don’t just take our word for it—hear what satisfied Hershey area residents have to say about their experience with LCS Heating and Cooling:

Jason and his team did a fabulous job converting my electric furnace to a dual fuel furnace. They did not miss a single detail, and swept and vacuumed upon completion. Jason walked me through what they had done and the operation of my new thermostat. They are absolutely great!!!

I recently was in the hospital getting ready for open heart surgery when my wife, who had stopped home to get things needed for a long hospital stay, called me and told me the water heater was leaking. It was later in the day but I called LCS to see what they might be able to do. They were closed but they texted me back anyway. I explained the situation to them and they were very accomodating. They said they could have a new water heater installed the next day. We made arrangements for our daughter to be there and they did in fact show up and install the water heater the next day. I was also able to wait until I got out of the hospital to pay the bill. These guys are just so nice to deal with. Instead of a headache on top of what I was dealing with I got a solution that took care of my problem. I would highly recommend LCS to anyone. You can't go wrong. They know what they're doing and they are very customer centric and just down to earth friendly people. I can't say enough about them.

What an awesome experience with LCS! Jason, Jon and Patrick replaced my new heat pump within a day. They are all very throughly, neat. They also explained all my concerns or questions patiently. This team is the best!

The best service and fair price. Another company tried to rip me off for almost double the price and Jason. Let me know what the price would be from the beginning with no runaround. He treated me like an intelligent human being and I would recommend them to anybody.

LCS did a fantastic job replacing our old oil furnace and central air HVAC systems. From the first visit I could tell Jason knows his stuff. He explained everything in layman’s terms and made sure I understood what was going to happen. After selecting LCS we were pleased in how quickly they were able to get the job scheduled and completed. Our new Heat pump system is so much better than the old oil system. It’s quiet, efficient, and does not have that smell. Jason, Pat, and John worked well as a team each getting their part done and letting me know along the way how the process was going. I am really happy with our choice to go with Legacy Comfort Systems and you will be too.

Complete Heating & Cooling Services for Duncannon Homes & Businesses

New AC Installation

Stay cool during Duncannon’s hottest summer days with a high-efficiency air conditioning system designed for your home. We handle precise sizing, professional installation, and fine-tuning so every room stays perfectly comfortable — no stress, just reliable cool air all season long.

AC Maintenance & Repair

We service and repair any HVAC system that we install. Our techs respond fast with expert repairs and preventive tune-ups. We catch small problems before they become major headaches, keeping your home cool, your energy bills in check, and your comfort uninterrupted.

Mini Split Installation

Ideal for older Duncannon homes or spaces without ductwork, ductless mini splits provide efficient, customizable comfort. Our Mitsubishi systems let you control temperatures room by room, saving energy while keeping your home perfectly balanced year-round.

Gas Furnace Installation

Stay warm through Perry County winters with a high-efficiency gas furnace installed by licensed professionals. We ensure your system runs safely, evenly, and economically from day one, keeping your family cozy no matter how cold it gets outside.

Gas Furnace Maintenance & Repair

Protect your investment with seasonal furnace tune-ups and fast, reliable repairs. Our team keeps your system running smoothly, ensuring safe operation and consistent warmth throughout Duncannon’s chilly months.

Gas Boiler Installation & Replacement

Upgrade to a modern gas boiler built for efficiency and comfort. We install durable systems that provide consistent heat, lower energy costs, and handle the unique demands of Duncannon’s homes during cold winters.

Heat Pump Installation & Replacement

Enjoy energy-smart, year-round comfort with a versatile heat pump that heats and cools in one sleek system. We match your home with the right model for maximum efficiency, keeping every room perfectly comfortable in any season.

Request HVAC Services in Duncannon PA

When comfort is critical, trust Legacy Comfort Systems (LCS), Duncannon’s local heating and cooling experts. Call (717) 980-3883 or request service online for fast, professional HVAC solutions you can rely on.

Why Duncannon Homeowners Trust LCS for Heating & Cooling

We know there are plenty of HVAC options out there, so why do Duncannon families choose Legacy Comfort Systems (LCS)?

We’re local. We live and work right here in Perry County. We know Duncannon homes, the Susquehanna weather swings, and the unique comfort needs of our community.
We’re transparent. You’ll always get clear, upfront pricing. No hidden fees, no surprises — just honest service you can rely on.
We’re experienced. Our technicians bring years of hands-on expertise and treat every home like it’s their own, ensuring top-quality installation and repairs.
We’re responsive. Heating or cooling problems don’t wait for business hours. That’s why we offer fast, reliable 24/7 emergency service for Duncannon and surrounding areas.
We’re family-owned. Our reputation matters. Every job we complete is backed by our name and a commitment to your satisfaction.

LCS is simple: old-fashioned integrity, modern HVAC expertise, all delivered right here in Duncannon, PA.

How It Works in 3 Easy Steps

Schedule Your Free Quote: Click “Request Service” or call us to book a convenient, no-obligation appointment.
In‑Home Assessment & Proposal: Our licensed technician arrives on time, evaluates your system, and provides clear, flat-rate options customized for your Perry County home or business.
Fast Installation & Ongoing Support: Once you approve, we get started promptly—backed by 24/7 emergency service and proactive maintenance plans to keep you comfortable year-round.

Flexible HVAC Financing Options for Residents of Duncannon PA

We know that repairing or replacing your heating and cooling system can strain a family budget. That’s why Legacy Comfort Systems (LCS) offers flexible financing through Synchrony, one of the nation’s most trusted lenders for home projects.

With Synchrony, Duncannon homeowners can:

Apply quickly and receive fast credit decisions
Access unsecured, revolving credit lines for flexibility
Take advantage of promotional financing options
Make convenient monthly payments that fit your budget
Manage your account online anytime

Financing is subject to credit approval, and minimum monthly payments are required. For full details, contact our team or visit our office.

Call (717) 980-3883 or reach out online to explore

Current Specials for Duncannon Homeowners

We love giving back to our local community, after all, Duncannon families are why we do what we do. Check out these limited-time HVAC savings:

💨 12-Year Warranty + 25 Months 0% Interest on select Mitsubishi Electric Multi-Zone Systems

❄️ $250 OFF any AC or furnace installation

🌬️ $250 OFF Mitsubishi Ductless System Installation

🔧 $25 OFF any routine service call

These specials won’t last forever, call today to secure your savings and keep your home comfortable year-round!

Real Jobs, Real Results

Serving Duncannon and Surrounding Communities

From the heart of Duncannon to Marysville, Millerstown, and all across Perry County, we’re proud to keep local homes comfortable year-round. When you search for “heating and cooling company near me,” chances are, Legacy Comfort Systems (LCS) is already helping a neighbor in your area.

We proudly serve:

Duncannon Comfort Calendar & Seasonal HVAC Tips

Duncannon’s weather can be unpredictable — chilly mornings one day, hot afternoons the next. Staying ahead with your heating and cooling system keeps your home comfortable and your energy bills in check.

Our local tips:

Spring: Schedule your AC tune-up in early spring, before the first heat wave hits. A little preparation ensures your system runs efficiently all summer.
Fall: Book your furnace maintenance in early fall, before the cold weather sets in. Proper upkeep prevents emergency breakdowns when you need heat the most.

A little seasonal planning goes a long way toward keeping your Duncannon home cozy, safe, and worry-free all year.