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.
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convection
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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
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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
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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:=_