$500 OFF A NEW A/C OR DUCTLESS MINI-SPLIT INSTALLATION
For a limited time, save $500 on the installation of a new central air, heat pump, or ductless mini-split system!
Expires 4/30/26.
Cannot be combined with any other offers and discounts.
$750 OFF A NEW A/C AND FURNACE COMBO INSTALLATION
For a limited time, save $750 on a new furnace and new A/C, sales, and installation!
Expires 4/30/26.
Cannot be combined with any other offers and discounts.
FREE 12-YEAR EXTENDED WARRANTY
12-year parts and compressor warranty with the purchase of a Mitsubishi Ductless Mini-split System installed by a Diamond Contractor (Approx. $1000 Value) and registered within 90 days of installation.
Expires 4/30/26.
Cannot be combined with any other offers and discounts.
SIGN UP NOW & SAVE $50 OFF PREMIUM MAINTENANCE PLAN
New customers only.
Savings applies to first year of service.
Special Financing Available.
Expires 4/30/26.
Cannot be combined with any other offers and discounts.
UP TO $50 OFF AN A/C OR HEATING SYSTEM TUNE-UP
$50 off oil furnaces, $30 off gas furnaces, and A/C units. Discount applies to service of $200 or more. Not to be combined with other offers.
Expires 4/30/26.
Cannot be combined with any other offers and discounts.
10¢ OFF PER GALLON OF HEATING OIL
FILL YOUR TANK NOW AND SAVE!
For a limited time, get 10¢ of your heating oil bill. (C.O.D. orders only).
Expires 4/30/26.
Offer valid for new customers or previous customers who have not purchased from Hillside in the last 24 months. Valid for one delivery location per customer. Cannot be combined with any other offers and discounts. Cannot be combined with any other offers and discounts.
SCHEDULE A FREE ESTIMATE TODAY!
Call Hillside Heating and Cooling to schedule a FREE estimate at 302-738-4144 or 410-398-2146
Join Over 5000 Customers Who Trust Hillside For
- Modern Energy-Efficient Products
- Exceptional Customer Service
- Fast and Flexible Scheduling
- Up-Front and Fair Pricing
- Industry Leading Warranties
- Excellent Service and Maintenance Plans
- Courteous and Professional Technicians
- Over 70 Years of Industry Expertise
THE TRUSTED COMFORT EXPERTS OF DE, MD, & PA
WE LOVE OUR CUSTOMERS
All of our work is guided by three generations of family attitudes and values – respect, loyalty, integrity, accountability, honesty, kindness. We pride ourselves on building excellent relationships with our customers, some of whom we have served for decades, and then gone on to serve their children for decades. Above all, we know what it’s like to be a customer and how we’d like to be treated.
That’s why we’re so honored to have received thousands of glowing ratings, reviews, recommendations, and testimonials from our heating and cooling customers. It means the care we put into our work shows through, and that we truly are doing customer service right.
Proudly Serving New Castle County, DE, Cecil County, MD and Southern Chester County, PA.
