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HVAC Resources
Hillside’s HVAC Resources library gives homeowners and businesses in New Castle County, Delaware; Cecil County, Maryland; and Southern Chester County, Pennsylvania practical PDF guides, brochures, and checklists for heating, air conditioning, heat pumps, oil heat, commercial fuels, and no-heat troubleshooting.
Guides, Checklists & Brochures
Open a guide to read it in your browser, download the PDF for later, or click any cover image to view the matching document. For homeowners and businesses across New Castle County, Cecil County, and Southern Chester County, these resources answer common comfort questions clearly, whether you are comparing equipment, learning how your system works, or preparing for service.
Air Conditioning Buyers Guide
Use this A/C buyers guide to compare replacement options, efficiency ratings, comfort features, sizing considerations, and practical questions to ask before installing a new air conditioner.
Download our Air Conditioning Buyers Guide
How HVAC Systems Work
Learn how heating, ventilation, and air conditioning equipment works together to move conditioned air, control humidity, and keep your home comfortable year-round.
Download our Beginner’s Guide To Understanding How HVAC Systems Work
Heat Pump Brochure
Review heat pump basics, comfort benefits, and high-efficiency heating and cooling options for homes considering a heat pump system or replacement.
Download our Hillside Heat Pump Brochure
Oil Heat 101
New to heating oil? Oil Heat 101 explains fuel tanks, gauges, delivery timing, basic maintenance, and the simple steps that help oil-heated homes stay comfortable.
Download our Oil Heat 101 Guide
Commercial Fuels Guide
Commercial customers can use this guide to review fuel service considerations, delivery planning, account needs, and dependable support for business operations.
Download our Commercial Fuels Guide
No-Heat Checklist
Before calling for emergency heating service, use this checklist to safely review thermostat settings, power switches, fuel supply, and common no-heat causes.
Download our No-Heat Checklist
HVAC Resource FAQs
What HVAC resources can I download from Hillside?
You can download Hillside guides for air conditioning replacement, how HVAC systems work, heat pumps, oil heat, commercial fuels, and no-heat troubleshooting.
What should I check if my heat is not working?
Start with the No-Heat Checklist, which walks through safe basic checks such as thermostat settings, emergency switches, power, and fuel supply. If the issue continues, contact Hillside for heating service.
How do I choose between an air conditioner and a heat pump?
Review the Air Conditioning Buyers Guide and Heat Pump Brochure, then schedule a professional evaluation so Hillside can review system sizing, ductwork, comfort goals, and efficiency options.
Can commercial fuel customers use these resources?
Yes. The Commercial Fuels Guide is intended for business customers who want to understand delivery planning, fuel service considerations, and account support.
Does Hillside serve New Castle County, Cecil County, and Southern Chester County?
Yes. Hillside serves homeowners and businesses in New Castle County, Delaware; Cecil County, Maryland; and Southern Chester County, Pennsylvania. Use these HVAC resources to compare equipment, understand how your system works, prepare for service, and plan heating or commercial fuel needs in the communities Hillside serves.
Need help choosing the right next step? Contact Hillside or call 302-738-4144 for DE and PA or 410-398-2146 for MD.