Wilmington DE HVAC Company

As a highly-trusted heating and cooling company servicing Wilmington, DE, since the 1950s, Hillside is a full-service Heating Oil Delivery, Commercial Fuel, and HVAC company for both commercial and residential customers.  You can trust Hillside for your repairs, maintenance, and installation requirements professionally and courteously.

Hillside is also the leading heating oil and commercial fuel company serving Wilmington, DE, servicing both commercial and residential customers—making daily deliveries of home heating oil, diesel fuels, and gasoline.

We are family owned and operated for over 70 years. Only real people answer our phones Monday through Friday, 8:00 AM – 5:00 PM. To Hillside, you are more than a customer. We’re big enough to serve you yet small enough to know you.

You may have seen our oil delivery trucks driving down the road. We regularly service Wilmington, DE, with commercial and residential heating oil delivery and commercial fuels. You may also have seen our HVAC trucks installing or repairing your neighbor’s heating and air conditioning systems. With three generations of trust behind us, you can count on only the utmost professionalism for our services.

Wilmington, DE HVAC Repair 

• A/C Repair
• Heat Pump Repair
• Furnace Repair
• Boiler Repair
• Ductless A/C Repair

Wilmington, DE HVAC Tune-Up

• A/C Tune-Up
• Furnace Tune-Up
• Heating Maintenance Plans
• A/C Maintenance Plans

Wilmington, DE HVAC Replacement

• New A/C Unit Installation
• New Heat Pump Installation
• New Ductless A/C System Installation
• New Thermostat Installation

You Can Trust Hillside

A+ Rating from the Better Business Bureau

Hillside’s BBB Accredited Business rating is an A+. 

BBB ratings represent BBB’s opinion of how the business will likely interact with its customers. The BBB rating is based on information BBB can obtain about the business, including complaints from the public. BBB seeks and uses information directly from businesses and public data sources.

BBB assigns ratings from A+ (highest) to F (lowest). In some cases, BBB will not rate the business (indicated by an NR, or “No Rating”) for reasons that include insufficient information about a business or ongoing review/update of the business’s file.

Torch Awards for Ethics

Hillside has been awarded The Torch Awards for Ethics.

The Torch Awards for Ethics honors companies whose leaders demonstrate a high level of personal character, ensure that the organization’s practices meet the highest standards of ethics, and consequently generate trust. These companies’ high level of trust is recognized among their employees, customers, and communities. The award embodies Better Business Bureau’s mission to be the leader in advancing marketplace trust.