Heiser Heating & Air. Mansfield IL. Air Conditioning. Water Heaters. Electrical. Spray Foam Insulation.

Great service at a great price

Cool off in hot weather with help from the pros

Keep your home or business cool during hot Illinois summers with exceptional air conditioning sales and service from Heiser Heating and Air. Get in touch today for a fast appointment!

  • Repair and service of most major A/C brands

  • Air conditioner sales

  • New constructions

  • Air conditioner replacement

  • Air conditioner tune-ups

  • Maintenance agreements available

  • 1-year warranties on air conditioner parts and labor

A range of air conditioning choices

For 12 years, Heiser Heating and Air has been bringing you outstanding heating, cooling and more. When you work with us, you will get personalized service, including an owner who is on-site for your job.


As a family-owned and operated business, you will always be treated like our neighbor! Call us today to learn more!

Experienced, personalized service


A/C problems? Call for help today:




Save even more energy on air conditioning. Ask about our selection of American Standard high-efficiency central air conditioning units!