Charlie the Hillside HVAC mascot Bernese Mountain Dog
Delaware 302-738-4144
Maryland 410-398-2146
Hillside HVAC is a great, reliable choice for your Natural Gas conversion


Converting to Natural Gas?

Consider Hillside HVAC for your conversion to Natural Gas

Delaware, Maryland, Pennsylvania Hillside Full Service Heating & Air Conditioning Service Truck

Hillside HVAC Full Service Heating & Air Conditioning

Repair, replacement, maintenance, and service of all major types and brands of heating and air conditioning. Oil, natural gas, propane gas, electric, or hybrid. Hillside has a solution that is right for everyone.

Delaware Heating and Cooling

No matter what the season, there's a reason to call Hillside HVAC.

Besides delivering heating oil to your home, Hillside also offers complete heating & air conditioning services including sales, installion, service and repair.

Delaware Maryland and Pennsylvania Full Service Fuel Oil & Diesel Fuel deliveries

Hillside HVAC is right around the corner

Hillside HVAC services all of New Castle County Delaware, Cecil County Maryland, and Southern Chester County Pennsylvania.

Competitive Newark Delaware HVAC Services

Best HVAC for the buck.

Hillside HVAC takes pride in bringing you better competitive pricing. The best customers are loyal customers and we do our best to return the favor.

Welcome to Hillside HVAC

Hillside HVAC is a great choice for your full service Heating Oil Delivery, Heating, and Air Conditioning solution. We are family owned and operated for over 65 years. Located in Newark, Delaware, we have been a staple in the community for just as long. Hillside HVAC is big enough to serve you, yet small enough to know you. Real people still answer our phones Monday through Friday, 8 am - 5 pm, and we are proud to advertise that fact.