The word heating is a verb. This is because verbs are "actions" and heating is an action.

Heatingly would be the adverb form, though this word is rarely found in literature nowadays.

convection

form_title= Heating and Cooling Service form_header= Keep your heating and cooling running smoothly. How old is your heating and cooling system?*= _ [50] Have you ever had to have it repaired?*= () Yes () No Do you have central air?*= () Yes () No

form_title= Heating Air Systems form_header= Stay warm with a heating air system. How old is your heating air system?*= _ [50] Please describe the problem in detail.*= _ [50] Are air ducts present in every room?*= () Yes () No

form_title=Find a Heating Contractor form_header=Look for a heating contractor in your area to help with installation and repair needs. What type of heating service?= () Gas () Electric () Geothermal () Other What service do you need done?= () Repair () Installation () Other Describe the building:=_