Winter Deals On A New Heating System
Heat Your Efficiently Home for Countless Years

Whether it’s furnace, boiler, heat pump, or a ductless mini-split, invest in a new heating system and take advantage of our Winter Heating Specials.
- Up to $2,000 Federal Tax Credit*,
- Special Financing**
- $250 Instant Rebate
- FREE wireless Wi-Fi thermostat upgrade with the purchase of a new installation or replacement.
- Free 12-Year Extended Warranty***
REQUEST A FREE ESTIMATE
*Starting in 2023, under the Inflation Reduction Act*, homeowners are eligible for a tax credit** of 30% of the cost, up to $2,000, for heat pumps and/or heat pump water heaters, in accordance with section 25C of the US tax code. Only certain models qualify for the tax credit, and you must have a tax liability from which to reduce your taxes. Consult your tax advisor for advice.
** Special financing for 36 months. Subject to credit approval.
*** 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.
And... Sign Up For One of Our
Worry-Free Winter Packages
Worry-Free Winter
Cost: $0
- Automatic Oil Delivery
- FREE Heater Tune-up ($249 value)
- FREE Tank Guard ($99 value)
- Basic Coverage Maintenance Plan Member ($89 value)
- Budget Billing Plan
- 15% Off any Service Invoice
Worry-Free Winter Premium
Cost: $299
- Automatic Oil Delivery
- FREE Heater Tune-up ($249 value)
- FREE Tank Guard ($99 value)
- Premium Maintenance Plan Member ($89 value)
- Budget Billing Plan
- 50% Off any Service Invoice
ENROLL TODAY FOR $299!
Eligibility.
To be eligible, a customer must be a homeowner and enroll into 24-months of automatic oil delivery. Maintenance plan, Tune-up, and Tank-guard are free only for the first year. You will have the option to renew each year. Offers are subject to credit approval.
To learn more and enroll in our Worry Free Winter Package, call us at 302-738-4144 (DE&PA) or 410-398-2146 (MD)!
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.
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Joe RoachJanuary 29, 2025recommends
Hillside is great for both repairs and major system replacements. Reasonable prices and great service!Posted on Facebook![]()
Lauren RiebelNovember 26, 2024recommends
This was our first time using this company & we will absolutely be using them again. Our technician was extremely knowledgeable & friendly. He really took the time to explain everything to us & didn’t try to sell us something new. I would 100% recommend this company to anybody in the area for any of your heating and cooling needs.Posted on Facebook![]()
Wendy LewisJuly 25, 2024recommends
My technician, Michael Fields II, assures me that all is well with my systems. I trust his assessment so feel confident that we will stay cool this summer and be warm this winter. He was polite, friendly, considerate, and EXTREEMLY popular with my pets. Bodhi and Baxter, one of the 2 dogs and one of the 2 cats, were very happy to follow him everywhere in the house. All 4 pets waited for him each time he went outside and made sure to get pets upon his return. I love that Michael came back this year and continues to take care of my systems as his father did before him. Very cool! Many thanks, and the crew looks forward to his return!Load more
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Frances, LivingstonSeptember 24, 2026
Hillside came quickly and was able to resolve our problems quickly.Posted on Google![]()
Patrick RileySeptember 16, 2026
Michael is a fantastic person couldn’t ask for better servicePosted on Google![]()
R MAugust 25, 2026
Very professional. Highly recommendLoad more
Proudly Serving New Castle County, DE, Cecil County, MD and Southern Chester County, PA.