What Do I Need to Know About My Air Conditioning System Published on June 05, 2017 With the EPA’s decision to phase out R22, several homeowners are considering buying new, more efficient air conditioning systems. Are you one of them? If so, Hammond Plumbing & Heating is here to help you figure everything out with our FREE eBook, Home Heating & Cooling for Dummies. This book includes what you need to know about when to replace your current air conditioner, choosing the right company to perform your installation, and so much more! To get your complimentary copy of Home Heating and Cooling for Dummies, visit our website. If you’re considering upgrading your air conditioning system this summer, call Hammond Plumbing & Heating for a free in-home estimate and ask about all our current deals!