Tank-Guard® Oil Tank Warranty Protection Plan in DE, MD, & PA
Corrosion protection and warranty service for above ground fuel oil tanks up to 330 gallons capacity.
The TANK-GUARD® Program is a corrosion protection and warranty service for aboveground fuel oil tanks up to 330 gallons capacity. With this program, we offer our customers an effective chemical corrosion inhibitor plus the security of our “peace-of-mind” tank replacement warranty.
Why Choose TANK-GUARD®?
Although standard steel heating oil tanks are renowned for their strength and durability, they inevitably reach a point where replacement becomes necessary. Typically, the culprit is internal corrosion, which gradually occurs due to natural condensation over time. Unfortunately, most homeowner insurance policies and oil dealer service agreements do not include coverage for oil tank replacement.
Why Choose TANK-GUARD®?
TANK-GUARD® Program Overview
Safety Inspection
Hillside’s service technician will conduct an initial safety inspection to determine program eligibility, adhering to visual inspection guidelines recommended by the National Oilheat Research Alliance (NORA).
Corrosion Inhibitor Treatment
As part of routine oil delivery or service, your tank will receive a concentrated application of our TANK-GUARD® liquid corrosion inhibitor.
Oil Tank Warranty
In the event of internal corrosion-related leakage, while your tank is enrolled in the TANK-GUARD® Program, your oil heat dealer will coordinate tank replacement, and you’ll receive a $2,000 warranty credit to offset replacement costs. Please consult your dealer for comprehensive warranty details.
Automatic Renewal
Your TANK-GUARD® protection automatically renews each year. You’ll receive a renewal bill, ensuring your tank is treated annually with the TANK-GUARD® corrosion inhibitor, and your warranty remains unaffected.
Click HERE for the enrollment form, details, warranty coverage, and terms & conditions.
REQUEST MORE INFORMATION
SIGN UP FOR TANK-GUARD® PROGRAM TODAY!
To enroll in our TANK-GUARD® program, call us at 302-738-4144 (DE&PA) or 410-398-2146 (MD) or download our TANK-GUARD® Program.
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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Patrick RileySeptember 16, 2026
Michael is a fantastic person couldn’t ask for better servicePosted on Google![]()
R MAugust 25, 2026
Very professional. Highly recommendPosted on Google![]()
Brandon ElmanAugust 17, 2026
Justin from Hillside came out to do a tune-up on our heat pump with auxiliary oil and replace a fuel gauge. He was very helpful in answering questions and service was fast, professional, and affordable.Load more
Proudly Serving New Castle County, DE, Cecil County, MD and Southern Chester County, PA.