Start with the problem you want solved
Start with the concern you are trying to address: visible dust, odors, humidity, ventilation or discomfort.
Copperton: planning the visit
If a home has received several rounds of heating upgrades, collect what you can about the current equipment and later additions. A comfort complaint may involve the distribution system as well as the furnace. Describe the rooms affected and the time of day before asking whether repair or replacement makes sense.
