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

Great service at a great price


Reliable heating services

If your home or business isn't as warm as it could be in winter – let the professionals at Heiser Heating and Air help. From sales to repairs and maintenance, you will get the assistance you need.

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  • Repair and service of most major brands

  • Sales

  • Custom duct work

  • Furnaces and boilers

  • Heat pumps

  • New constructions

  • Tune-ups and replacements

Complete heating options

When you choose Heiser Heating and Air, you will have access to a range of American Standard high-efficiency furnaces. We recommend these furnaces for ultimate heating efficiency, which then saves you money.


Want your heater or boiler to last longer? Ask us about maintenance agreements to keep your unit in great shape. We also offer 1-year warranties on parts and labor.  

The most efficient furnaces available

Warm up with heating help today:




Looking to warm up your home or business this winter? Ask us about our variety of energy-efficient options.