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Thank you for contacting Hillside Heating and Cooling. Your message is important to us and a representative will be in touch with your shortly.

If this is an emergency, or you’d like to speak with a member of our team, customer service rep, please call us at 302-738-4144 (DE&PA) or 410-398-2146 (MD).

In the meantime, we’d love to connect with you on your favorite social media platform!
(We have a lot of fun and sometimes share useful information about your heating and cooling needs).

Phone:

302-738-4144 (DE & PA) 410-398-2146 (MD)

Fax:

302.738.5879

Mailing Address:

Hillside Oil Heating & Cooling
40 Brookhill Drive
Newark, DE 19702

Hours:

Monday—Friday: 7:30AM–4:30PM
Saturday: 9:00AM–1:00PM (Winter)
Open daily in case you need us.

Hillside Heating & Cooling is an award-winning, full-service heating, air conditioning, heating oil delivery, and commercial fuel company serving residential and commercial customers for over 73 years in New Castle County, DE, Cecil County, MD, and Southern Chester County, PA. Having earned over 3,000 certified 5-star reviews and testimonials, Hillside is committed to its mission, “keeping customers cool in the summer and warm in the winter while delivering customer service right.”